RESEARCH PAPERS

power system research papers 2014




Performance Evaluation and Operation of PMUs in Power System
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ABSTRACT This paper gives the basic idea on phasor measurement unit (PMU). In this growing field of restructuring the power systems monitoring is of greater importance. This paper presents a critical review on different application of Phasor Measurement Units (

Based on Load Maximum Capacity of Distributed Generation unit in Radial Power System
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ABSTRACT Due to technology improvement, energy market liberalization and environmental issues it has been witnessed an increasing allocation of distributed generation (DG) in the distribution networks. Every year, Distribution Network Operators (DNOs) receive several

Governing Control and Excitation Control for Stability of Power System Based on ANFIS
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ABSTRACT The issue of power system stability is becoming more crucial . The excitation and governing control of generator play an important role in improving the dynamic and transient stability of power system. In this paper, the authors present a Neuro-fuzzy based

Simulation of Voltage Sag Magnitude Estimation in a Power System Network
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ABSTRACT The Power Quality term is widely used in recent years in power system field. Voltage sags is one of the power quality issue, which is also known as dips, are important to industrial reliability. This paper presents a power world simulation approach to find the

Placement Control Modeling of Unified Power Flow Controller Using Voltage Stability Index and a- Transformation Theory for Multi-Machine Power System
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ABSTRACT The Unified Power Flow Controller (UPFC) is the most versatile and complex power electronic FACTS device that has emerged for the control and optimization of power flow in electrical power transmission system. In this study, Unified Power Flow Controller (

IEEE PES Task Force on Benchmark Systems for Stability Controls Simplified 14-Generator Model of the South East Australian Power System
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The purpose of this document is to provide a test system which can be used as a test bed for the small-signal analysis and design of power system stabilisers (PSSs) and other controllers in a multi-machine power system. Frequently papers are published in which the

Performance operation and Control of EHV Power Transmission System
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ABSTRACT This paper investigates the effects of Static Var Compensator and Static Synchronous Compensator on voltage Collapse of a power system. The effect of Critical Fault Clearing Time of the system due to facing the fault, to prevent permanent voltage

Power System Voltage Stability
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ABSTRACT Voltage stability of electric power systems is a challenging topic both theoretically and in practice. This article touches briefly on the main aspects of the problem and highlights theoretical foundations and fundamental methods for voltage stability analysis. The single-

Impact of Frequency Control Reserve Provision by Storage Systems on Power SystemOperation
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ABSTRACT Batteries can be used to provide ancillary services, such as primary frequency response. However, their energy capacity is limited. Therefore, set-point adjustments are necessary and the energy for this has still to be provided by power-plants that do not face

ESTIMATION FOR WEAK BUS IDENTIFICATION USING FAST VOLTAGE STABILITY INDEX IN A POWER TRANSMISSION SYSTEM BY REAL-TIME
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This letter demonstrates the use of line stability index termed as Fast Voltage Stability Index (FVSI) in order to determine the maximum loadability in power system. Voltage stability analysis is conducted using line stability index indicated by FVSI to indicate the

A Statcom-Control Scheme for Grid Connected Wind Energy System for Power Quality Improvement
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ABSTRACT Injection of the wind power into an electric grid affects the power quality. The performance of the wind turbine and thereby power quality are determined on the basis of measurements and the norms followed according to the guideline specified in

Power System Simulation Methodologies
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ABSTRACT Simulation is a technique by which a physical system is modeled and analyzed mathematically through computer programs. A sets of mathematical equations are solved to investigate the system dynamic behavior. For large and complex physical systems, it has

Power Systems/Communication System Co-Simulation and Experimental Evaluation of Cyber Security of Power Grid
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Framework for Interconnected Power System and Communication Network," Smart Grid, IEEE Transactions on vol.3, no.3, pp.1444,1456, Sept. 2012 Page 6. 2: Global Event-Driven Synchronization 6 a minimum cut of the entire power system that can separate S and T.

Power system protection issues due to wind generation farms
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ABSTRACT The current power system is working under sustaining energy shortages. The distributed generation (DG) can be a solution for the energy shortage. Distributed generation refers to generation of power using a set of small sized generators that produces power at

Application of Power System Stabilizer for the Stability of Synchronous Machines at Different Loading Conditions
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ABSTRACT This paper offers by having an evaluation of the phenomena of stability of synchronous machines under small distributions by examining the case of a single machine infinite bus (SMIB) linked to a large system through external impedance, and studies the

Simplified Modeling of VSC-HVDC in Power System Stability Studies
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ABSTRACT This paper presents a simplified modeling approach for a voltage source converter based high voltage DC transmission line (VSC-HVDC) for use in power system dynamic studies. In the AC grid sending-end and receiving-end converters (SEC and REC) of the

Coordinated Control of PSS and FACTS Devices to Improve Power System Stability
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ABSTRACT The paper describes the coordination control of PSS (power system stabilizer) and FACTS (flexible AC transmission system) devices in order to improve low-frequency oscillation followed by disturbances. The PSS is generally used to mitigate the low-

Model Predictive Control for Power System Frequency Control Taking into Account Imbalance Uncertainty
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ABSTRACT Model predictive control (MPC) is investigated as a control method for frequency control of power systems which are exposed to increasing wind power penetration. For such power systems, the unpredicted power imbalance can be assumed to be dominated by

Stabiliser fault emergency control using reconfiguration to preserve power system stability
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ABSTRACT Stabiliser faults in multi-machine power systems are examined in this paper where fault-masking and system reconfiguration of the nonlinear system are obtained using a virtual actuator approach. Phasor Measurement Units, which can be integrated in wide-

Comparison and Assessment of a Multiple Optimal Coordinated Design Based on PSS and the STATCOM Device for Damping Power System Oscillations
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ABSTRACT The aim of this study is to present a comprehensive comparison and assessment of the damping function improvement for the multiple damping stabilizers using the simultaneously coordinated design based on Power System Stabilizer (PSS) and Static

Nonlinear Controller Design for Vehicle-to-Grid (V2G) Systems to Enhance Power Quality andPower System Stability
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ABSTRACT A nonlinear controller design technique, for the enhancement of power quality and power system stability in a vehicle-to-grid (V2G) system, is proposed in this paper. The dynamical model of a V2G system is first developed and then the controller is designed

How Carbon Pricing Impacts the Selection and Optimization of a Gas Turbine Combined Heat and Power System: An Australian Perspective
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ABSTRACT Businesses are currently being forced to re-evaluate their energy practices with the emergence of carbon pricing in many developed nations including Australia's relatively new carbon pricing mechanism. This paper expands on a previous investigation by these

Active Filter for Single-Phase Power System
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ABSTRACT This study investigates the application and functionality of pure active power filters for current compensation in single-phase power systems. A small scale proof of concept design was constructed, using components which were studied, justified, and chosen

Computational Approaches for Bad Data Handling in Power System Synchrophasor Networks
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ABSTRACT The state estimators used in real-time power system control centers now process bad data as a standard routine. With the introduction and deployment of phasor measurement units (PMUs), it is possible to model power systems, even with their time-

Design and pre-flight testing of the electrical power system for the ESTCube-1 nanosatellite
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ABSTRACT This work describes the final design and implementation of the electrical power system for ESTCube-1, a 1-unit CubeSat tasked with testing the electrostatic tether concept and associated technologies for the electric solar wind sail in polar low Earth orbit. The

SIMULATION STUDY ON PERMANENT MAGNET WIND POWER GENERATION SYSTEMBASED ON PSIM
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ABSTRACT Through systematically analyzing the mathematical theory knowledge of the small and medium-sized direct-drive permanent magnet wind power system, this paper has designed a rated power of 3kW wind power system under the environment of PSIM9. 0

Optimal Coordination of Multiple ESS-based Stabilizers and PSS in Multi-machine Power System for Damping Improvement
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ABSTRACT This paper proposes to optimally coordinate multiple Energy Storage System (ESS) based stabilizers and Power System Stabilizers (PSS) to increase damping in a multi- machine power system using an improved particle swarm optimization (IPSO). The IPSO

Reactive Power Optimization of Power System based on Particle Swarm Optimization and Non Linear Programming
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ABSTRACT Optimal Power Flow (OPF) problem in electrical power system is considered as a constrained nonlinear, single objective or multi-objective optimization problem with multiple variables and multiple constraints. As the Power Transmission companies have been

Artificial Intelligence Technique based Reactive Power Planning Incorporating FACTS Controllers in Real Time Power Transmission System
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ABSTRACT Reactive Power Planning is a major concern in the operation and control of power systems This paper compares the effectiveness of Evolutionary Programming (EP) and New Improved Differential Evolution (NIMDE) to solve Reactive Power Planning (RPP) problem

Analysis of Potentiality of HVDC in Future Power System in Bangladesh
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ABSTRACT In order to satisfy the Power demand, Bangladesh need advance technologies to establish a promising Power sector. Some of literatures have described the effectiveness of High Voltage Direct current transmission (HVDC) over traditional transmission system.

Risk Assessment of Power System under Typhoon Disaster
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ABSTRACT The paper focuses on the research of typhoon disaster and its influence on power system security. A typhoon disaster simulation model is established to track the average impact of a large number of typhoon simulations in Guangdong province in China. The

Newly developed enhanced imperialistic competitive algorithm for design optimization of an autonomous hybrid green power system
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ABSTRACT The importance of economics for owning hybrid green power systems (HGPS) warrants development of optimization methodologies with more effective search capabilities for determination of global minimum for costs. The objective of this study is to present

Power system relay protection simulation based on MATLAB.
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ABSTRACT MATLAB-based simulation technology can support the analysis and design of relay protection systems. A simulation model is built for the study of power system relay protection. As an example, the power system fault simulation, zero-sequence current

Particle Swarm Optimization Based Composite Power System Reliability Analysis Using FACTS
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ABSTRACT With the introduction of competition in the existing electrical market, it becomes necessary to enhance the transmission capacity of the power system through the existing transmission lines. The utilization of FACTS technologies can have significant impact on

EXERGY ANALYSIS OF A STEAM POWER SYSTEM FOR POWER PRODUCTION
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ABSTRACT The present study deals with an Analysis of power generation systems are of scientific interest and also essential for the efficient utilization of energy resources. The most commonly-used method for analysis of an energyconversion process is the first law of

A proposed Framework for a Forecasting System of Wind Energy Power Generation
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ABSTRACT Wind energy generation is expected to increase in future electric grids. The generated wind power has an intermittent nature which may affect power system stability and increase the risk of blackouts. Therefore, a prediction system for wind power

A Novel Approach for Enhancement of Power Quality by Reduction of Total Harmonic Disortion in Three Phase Four Wire System
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ABSTRACT This paper presents a fuzzy logic, PI, average current controlled shunt active power filter used to compensate for harmonic distortion in three-phase four-wire systems. The shunt active filter employs a simple method for the calculation of the reference compensation

Economic Analysis for Possibility of Hybrid Energy Storage Systems Application to Frequency Control in Power System
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ABSTRACT Battery energy storage system (BESS) is focused in Smart Grid among the currently available energy storage solutions. Furthermore, Hybrid Energy Storage Systems (HESS) composed of two different kinds of battery is also studied to achieve better performance

Three-Level Boost Converter Design for High Efficiency Photovoltaic Power ConditioningSystem
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ABSTRACT This paper proposes the three-level boost converter for highefficiency photovoltaic power conditioning system. Different from the existing two-level high boost converter, it has the advantage of high voltage gain and thus it is easy to make a high voltage from a low

Comparison of Frequency Domain and Time Domain Model of a Distributed Power SupplyingSystem With Active Power Filters
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ABSTRACT The growing complexity of modern power systems and an increasing number of the non-linear loads, has been forcing the use of more advanced methods of computer modeling and simulation. Usually, one of the two main types of electric system models are

Accumulator Absorb shocks Simulation Analysis on Pavement Hydraulic Power System
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ABSTRACT By analyzing the pavement hydraulic power generation system working principle and accumulator mathematical model, full account of the system actual operating conditions, use Matlab/Simulink software simulation the accumulator working process, obtain

Lyapunov Methods in Power System Stability
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Energy functions, an extension of the Lyapunov functions, have been practically used in electric power systems for several applications. A comprehensive energy function theory for general nonlinear autonomous dynamical systems along with its applications to electric

Electrical Power System Considerations for Modular, Flexible, and Adaptable Ships
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Eliminate rework in bow and stern design to accommodate need for additional displacement or volume for new combat systems. Facilitates rapid insertion of new disruptive technologies (Rail gun, FEL) Enable prefabrication and testing of parallel midbody sections for

Effects of Increasing Intermittent Generation? on the frequency control of the European Power System
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ABSTRACT With increasing the intermitting generation such as wind power (WP) and photovoltaic (PV) in the European power system, the conventional power plants online will be replaced by WP and PV. Thus, the sources of conventional reserve available to the

Control and Operation of a Solidoxide Fuel-Cell Power Plant in an Isolated system
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A dynamic model for a solid oxide fuel cell power plant has been constructed. The concept of a feasible operating area for a solid oxide fuel-cell power plant is introduced by establishing the relationship between the stack terminal voltage, fuel utilization, and stack

Impact analysis of human errors on operation reliability in power system
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ABSTRACT Based on modification of CREAM extended method, an approach is proposed to calculate the human error probability suitable to power system situation and an operation reliability assessment model is firstly put forward. Then the event tree analysis method is

System Design and Analysis for Maximum Consuming Power Control in Smart House
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ABSTRACT The efficiency, reliability, and stability of the smart house is expected to be significantly improved via home energy management system (HEMS), and smart meter (SM) is the most essential part of the energy system used to connect individual home appliance

Stability and Reliability Improvement in Solar Wind Hybrid Power System with Battery Energy Storage Station
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ABSTRACT Renewable energy systems, such as photovoltaic (PV) and wind power generation (WPG), are live a more and more important role in energy production. However, the output power of PV are usually strongly fluctuant due to the uncertainty and intermittence of solar

Monitoring the Wide Area Power System Dynamics by Phasor Measurement Units Based on Campus WAMS Strategy
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ABSTRACT This paper presents the applications of Phasor Measurement Unit (PMU) for assessing the dynamics and stability of wide area interconnected power system. Wide area measurement system for the power system dynamical assessment which has been

Optimal SVC Placement in Electric Power System Using NSGA-II
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ABSTRACT This paper proposes non dominated sorting genetic algorithm (NSGA-II) with a feature of adaptive crowding distance for obtaining optimal location and sizing of Static Var Compensators (SVC) to minimize real power losses (RPL) and load bus voltage deviation

Loading Margin Enhancement in Power System via FACTS Devices Hybrid Structure
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ABSTRACT The FACTS (Flexible AC Transmission System) devices have been considered as excellent controllers in a power system for better reliability and transmission capacity on a long-term and cost-effective basis. In this paper, a novel power flow controller topology is

POWER SYSTEM HARMONICS ESTIMATION USING DIFFERENT SIGNAL PROCESSING TECHNIQUES
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ABSTRACT Harmonics have been available for quite a while and its presence shapes the execution of a power system. Consequently, harmonics estimation is of principal vitality while analyzing the power system. Emulating the beginning of harmonics, different filters

Introduction and Study on Protective Relaying in Power System
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Advanced Materials Research Vol. 1003 (2014) pp 169-172 Online available since

Development and Evaluation of Suitable Prototype Electrical Power System for Running an Air Conditioner using Solar Panel
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ABSTRACT An Air Conditioner is an important utility for industrial, commercial, research and comfort applications. It is designed to change the Temperature and Humidity within an area. Air Conditioning is an energy itensive utility and consumes about 40% of the total energy

Comparison of FACTS Devices for Power System Transient Stability Improvement
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ABSTRACT Recent development of power electronics introduces the use of FACTS devices in power systems. FACTS devices are capable of controlling the network condition in a very fast manner by reactive power management and this unique feature of FACTS devices

A Novel Approach to Harmonics Analysis and Control for Dynamic Power System using STATCOM
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ABSTRACT In power systems, there exists a continuous challenge to improve dynamic performance of power system. The Static Synchronous Compensator (STATCOM) is a power electronic based device that has the capability of controlling the power flow through a line.

Forecasting CO 2 emissions of power system in China using Grey-Markov model.
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ABSTRACT The greenhouse effect and its extension affecting is one of the key issues to governments and academics currently. Study shows, CO2 produced from burning fossil fuels are liable 2/3 of the above-mentioned problems. CO2 emissions in China are mainly

Research on Seismic Disaster and Prevention Countermeasures of Electric Power System
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Page 1. Research on Seismic Disaster and Prevention Countermeasures of Electric Power System Wen Yu 1, a Yihang Zhou 1,b Lixin Zhu 2,c and Xueli Ge 2,d Keywords: Seismic disaster, Electric power system, Failure mechanism, Engineering measureABSTRACT

Stability Enhancement of Multimachine Power System via New Coordinated Design of PSSs and SVC
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ABSTRACT In this paper, the assessment of new coordinated design of Power System Stabilizers (PSSs) and Static Var Compensator (SVC) in a multimachine power system via statistical method is proposed. The coordinated design problem of PSSs and SVC over a

Economic and Environmental Modeling of a Micro Gas Turbine and Solid Oxide Fuel Cell Hybrid Combined Heat and Power System
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ABSTRACT In this article, economic and environmental analysis of a CHP system using SOFC- MGT is investigated. Comprehensive electrochemical, thermal, and exergetic calculations in the system are performed in order to get hold of accurate which is validated using

Impact of Increasing Wind Power Generation on the North-South Inter-Area Oscillation Mode in the European ENTSO-E System
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ABSTRACT After the enlargement of the European ENTSO-E power system towards Turkey at the end of 2010, the East-West Inter-Area Oscillation mode in the enlarged the European ENTSO-E power system has been identified in the frequency range of 0.15 Hz (TP= 7s)

Optimal Scheduling Methods to Integrate Plug-in Electric Vehicles with the Power System: A Review?
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potential of electric vehicles in terms of reducing fuel consumption and green-house gas from the transport sector. It has brought electric vehicles back into the spotlight worldwide

Prediction of Power System Post-Contingency Vulnerability Status by Mining Synchronized Phasor Measurements
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ABSTRACT Real-time vulnerability assessment (VA) is one of the essential tasks of the so called Smart Grid, since it has the function of detecting the necessity of performing global control actions. In view of this, the present paper will introduce a novel data-mining-based

Review on Mechanism and Analysis Methods of Low Frequency Oscillation in Power System
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Employing Mathematical Model and Neural Networks to Determine The Optimal Distance of Install SVC and Decrease The Losses in Electric Power System
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In this thesis an electric power system is considered, we design mathematical model for the determination of the increase in operational cost of transmission line caused by reactive power transmission, and decrease the Losses in electric power system by derived

TRANSIENT STABILITY IMPROVEMENT OF MULTI-MACHINE POWER SYSTEM USING UPFC TUNED-BASED PHASE ANGLE PARTICLE SWARM
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ABSTRACT Optimal computation of parameters and placement of UPFC based minimization of New Voltage Stability Index (NVSI) are presented in this paper. The application of Unified Power Flow Controller (UPFC) to enhance transient stability of a multi-machine power

Effects of Wind Generation Uncertainty and Volatility on Power System Small Signal Stability
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ABSTRACT This paper discusses the impacts of large scale grid-connected wind farm equipped with permanent magnet synchronous generator (PMSG) on power system small signal stability (SSS) incorporating wind generation uncertainty and volatility. Firstly, a

BIFURCATION ANALYSIS OF EQUILIBRIUM POINT IN TWO NODE POWER SYSTEM
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ABSTRACT This study presents a study of bifurcation in a dynamic power system model. It becomes one of the major precautions for electricity suppliers and these systems must maintain a steady state in the neighborhood of the operating points. We study in this study

Microcontroller Based Under/Over Frequency Relay for Power System Protection
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ABSTRACT This paper investigates the frequency fluctuation in power system and protect the power system from its harmful effects. Therefore we design a Microcontroller Based Under/Over Frequency Relay. In this paper we use microcontroller AT89S52 for protecting

Research of Power System for Hydrogen-Electric Hybrid Fuel Cell Vehicles
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PERFORMANCE COMPARISON OF POWER SYSTEM STABILIZER WITH AND WITHOUT FACTS DEVICE.
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ABSTRACT Power system damping through coordinated design of power system stabilizer (pss) different types of FACTS devices (SVC, SSSC UPPC) is presented in this paper. In the condition of single phase fault power system stabilizer is enough to damp the

Power System Relaying
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Electric power systems are subject to faults and failures that result in unsafe conditions and can damage equipment if the faulty conditions persist. It is imperative to disconnect the faulty equipment as fast as practicable without interrupting the capability of the system to serve

The Analysis of Power System Network Loss
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Power system, as the world's most complex man-made system, mainly consists of generators, transformers, electric power circuit, electrical equipment and other components contact with each other, except the generators and electrical equipment in a power system,

Robust Optimization of Steam Power System
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Advanced Materials Research Vols.

Research on Modeling and Simulation Technology for Wind Power Generator in Power System: A Survey
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YS Su, Y Zeng, P Li, ZH Li Applied Mechanics and Materials,

Power System Stability and Control
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3.3 Per Unit Representation 3.16 3.3. 1 Stator and rotor winding voltage equations in per units 3.19 3.3. 2 Stator and rotor winding flux linkage equations in per units 3.22 3.4 Synchronous Machine Parameters 3.27 3.4. 1 Sub-transient and transient reactance 3.27

Research on DEH System Characteristics Effect on Power System Low-Frequency Oscillations
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Research on DEH system characteristics effect on power system low-frequency oscillations ABSTRACT This article analysed the impact of speed regulation and power-frequency control on power system low-frequency oscillations from the perspective of its production theory.

A Practical, Hybrid Approach to Faster-Than Real-Time Power System Analysis and Control
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ABSTRACT This paper examines how custom computing hardware for fast power system analysis may be adapted to improve the user experience as well as its commercial-viability. One prime example of such custom hardware is the FPAA-based analog emulator

Model Predictive Control for Energy Dispatch of a Photovoltaic-Diesel-Battery Hybrid Power System
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ABSTRACT The photovoltaic-diesel-battery (PDB) hybrid system is proposed previously to satisfy power requirements in some remote areas locating out of national power grid. However, to dispatch the uses of different components in PDB hybrid system remains a

AN EVALUATION OF THE NOISE IMPACT OF SATELLITE POWER SYSTEM VEHICLES ON THE COMMUNITY AND ECOLOGY AT THE LAUNCH SITE-
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ABSTRACT Placement of the Satellite Power System (SPS) satellites into orbit will require the launch of many heavy space vehicles over a 30-year period. These vehicles will generate rocket noise at launch, and sonic booms at launch and on return to the landing

Implementation of Fuzzy Logic Based Maximum Power Point Tracking and PWM for the Solar Photovoltaic System
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ABSTRACT The electric power supplied by a photovoltaic power generation systems depends on the solar irradiation and temperature. The PV system can supply the maximum power to the load at a particular operating point which is generally called as maximum power point

Applications of wavelets and neural networks for classification of power system dynamics events
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ABSTRACT This paper investigates the possibility of classifying power system dynamics events using discrete wavelet transform (DWT) and a neural network (NN) by analyzing one variable at a single network bus. Following a disturbance in the power system, it will

FTR Allocations to Ease Transition to Nodal Pricing: An Application to the German Power System
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ABSTRACT A shift from zonal pricing to smaller zones and nodal pricing improves efficiency and security of system operation. Resulting price changes do however also shift profits and surplus between and across generation and load. As individual actors can lose, they

Feasibility Study on the Use of Vegetable Oil (Natural Ester) in Malaysia Power SystemTransformers
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Power transformer insulation oil is critical to the useful life of the transformer. Although mineral base insulation oil is the most common type of transformer insulation oil in use, environmental and safety concerns has encouraged the development of biodegradable

Research on Audit Model of Users' Operation Normalization Based on Graph Theory in Power System
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Users' correct operations should beAbstracted into the data which can be stored in computer. So we need model users' operation. Power industrial control system is a closed system. It has specific operations. By analyzing,Abstracting, modeling the manual of users

Impact of Large Scale Grid Connected Wind Power on Power System
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The randomness and fluctuation of wind results in wind power generation with strong uncertainty. To ensure the power system operate safely and reliably, research on the impact of grid connected wind power on power system is necessary. From the perspective of

Semi-Definite Programming for Power Output Control in Wind Energy Conversion System
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ABSTRACT One of the key issues in wind energy is the control design of the wind energy conversion system to achieve an expected performance under both the power system and mechanical constraints which are subject to stochastic wind speeds. Quadratic control

Transient Stability Analysis of a Two-Machine Power System under Different Fault Clearing Times
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ABSTRACT This paper presents a new method for analyzing transient stability of a faulted two- machine system. This method uses a set of closed loop transfer function for each machine and derives the dominant root by taking Laplace transformation of the machine's nonlinear

An ANFIS Approach for Overload Alleviation in Electric Power System
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A power system configuration undergoes frequent changes due to contingencies and/or disturbances. If the power system survives after the disturbance, it will be operating in a new steady state in which one or more transmission lines may be overloaded. A corrective

The Simulation Research of SVG Control Algorithm Based on Unbalanced Power System
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ABSTRACT For three-wire three-phase system load imbalance in the system when the current imbalance of power grid, The SVG control strategy which was applied in the unbalanced system was proposed by the paper, and carried on the research and analysis by MATLAB simulation function.

Design and Implementation of Fuzzy Logic Based Power System Stabilizers
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ABSTRACT Fuzzy logic has emerged as a promising tool for several power system applications. A large body of the literature in this area is concerned with the stability of the electric power system and considerable effort has been directed to the development of a

System Study: Emergency Power System
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ABSTRACT This report presents an unreliability evaluation of the emergency power system (EPS) at 104 US commercial nuclear power plants. Demand, run hours, and failure data from fiscal year 1998 through 2012 for selected components were obtained from the

Protection of Power System Using Sequential Tripping
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ABSTRACT This paper describes a Sequential Tripping Strategy used in an electrical power system to combat situations in which protection relays have maloperated or information is missing. This is an innovative back-up protection scheme designed to prevent the

Controlling SCIG-based Wind Turbine to Satisfy the Power System Operator's Requirement
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ABSTRACT In this paper, the integration of a battery system into a SCIG-wind farm is investigated so that this wind farm satisfies the grid code's two requirements including active power control and ride through fault ability. A control scheme coordinating between the

Optimal Deployment of Hybrid Alternative Power System at Signalized Intersections
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Traffic signal power failures can degrade the efficiency and safety at intersections that warrant traffic signal control. Alternative Power Sources (APS) are typically used to power traffic signals 24 during power outages. Signals operating agencies need a decision

Using IEC 61850 for Power Equipment Condition Monitoring Diagnosis System
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In recent years, the reliability of the power system is becoming more and more important. To improve the reliability, many different condition monitoring diagnosis (CMD) techniques are used for diagnosing power grid health status. Since various equipments such as overhead

Optimization of Wind Power Dispatch to Minimize Energy Storage System Capacity
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ABSTRACT By combining a wind turbine with an energy storage system (ESS), we are able to attenuate the intermittent wind power characteristic making the power derived from a wind farm dispatchable. This paper evaluates the influence of the phase delay of the low-pass

Research on Mathematical Model of Nuclear Power Plant for Different Processes in the Power System Simulation
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YF Huang, Z Xu Applied Mechanics and Materials,

Liaoning Wind Power Integration into Power System Problems Analysis and its Strategies
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Study on tracking control of maximum power point for chemical photovoltaic power system.
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ABSTRACT In order to achieve the tracking control of maximum power point for chemical photovoltaic system, and improve the transferring efficiency of solar energy, the fuzzy PID controller is applied in it. Firstly, the working theory of photovoltaic cell is analyzed.

Parameter Polyoptimization of PSS2A Power System Stabilizers Operating in a Multi-machinePower System Including the Uncertainty of Model Parameters
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ABSTRACT In the paper there is presented the analysis of the parameter optimization results of the PSSA power system stabilizers when taking into account the uncertainty of the power system mathematical model parameters. The multi-criteria optimization is used for

Research on Battery Energy Storage System in Suppressing Power System Oscillation
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HD Zhang, B Li, JS Zhang Advanced Materials Research,

The Establishment of Evaluation Index System for the Secondary Equipment of Power System
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ABSTRACT The stable operation of the secondary equipment is very important to the stable operation of power system. In order to improve the operation reliability of the secondary equipment and reduce personnel maintenance workload, the condition-based maintenance of secondary

Modeling of Zeta converter based DVR system for power quality improvement.
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ABSTRACT A new development of voltage control scheme for power quality improvement such as voltage sag, swell, harmonics, and transient conditions in three-phase power systems has been proposed. Faults occurring in power distribution systems or amenities

Request-paper- optimization tech. in power constraints and voltage constraints



Optimal power flow using particle swarm optimization
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solving OPF problem significantly relieves the assumptions imposed on the optimized objective functions The OPF problem solution aims to optimize a selected objective function such as A wide variety of optimization techniques have been applied in solving the OPF problems [1

Particle swarm optimization to solving the economic dispatch considering the generator constraints
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presented an integrated parallel GA incorporating simulated annealing (SA) and tabu search (TS) tech- niques that employed the is apparent in applications with highly epistatic objective functions (ie, where the parameters being optimized are highly optimization problems.

Comparison of voltage security constrained optimal power flow techniques
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problem [4], [5], has lead the authors to propose OPF formulations that optimize a system the generator powers at the current operating point, which are being optimized at the Multi-objective Optimization Techniques Applied to

Voltage scheduling problem for dynamically variable voltage processors
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techniques with multiple supply voltage were proposed as the power optimization tech- niques. Our major contribution is to develop an effective voltage scheduling technique to optimize the power Sec- tion 2 presents basic theorems for power-delay optimization. In order to optimize PEV battery life, deep cycle batteries with a depth of discharge (DOD) of 70% of the rated A real-time smart load management (RT-SLM) algorithm based on MSS optimizations is proposed to improve smart grid Conventional optimization approaches (eg

Comparison and application of evolutionary programming techniques to combined economic emission dispatch with line flow constraints
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The cost is optimized with the Table VII provides a comparison of combined economic emission load dispatch results obtained by various optimization methods for two dispatch results of two IEEE test systems were compared with those obtained from classical technique and

Power optimization of variable-voltage core-based systems
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of the cache or improve the performance of the cache, mainly by optimizing memory and relocation lookup table to map from the original address space into the optimized address space. HONG et al.: POWER OPTIMIZATION OF VARIABLE-VOLTAGE CORE-BASED SYSTEMS

Challenges to optimal power flow
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interest in a variety of formulations, through the use of advanced optimized techniques such as However, the program used by BPA did not optimize for more than one contingency at a Simultaneous transfer capability can be evaluated as a true optimization problem using a dc

On-chip power-supply network optimization using multigrid-based technique
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This initial power-supply network is feasible but overdesigned because the area is not optimized yet. In this section, we discuss how to optimize the reduced power-supply network. for a power-supply network can be formulated as a constrained nonlinear optimization problem in

Power: A first-class architectural design constraint
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is difficult because it requires comparing designs that use the same technologies. Architectural Level Power/Performance Optimization and Dynamic Energy-Driven Integrated Hardware-Software Optimizations Using SimplePower

Power-constrained CMOS scaling limits
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there is a wide range of ends to scaling, corresponding to optimized technologies for different Each point in the figure represents an independent optimization of both the supply are needed to more precisely determine these fractions, but although such optimizations are likely to 5. QE charaaeristic at a Sydney bus C. Zonal Load Increase and Voltage Constraints Further in the optimisation method all voltages can be optimised to maximise the margin whilst obeying the constraint. [2] CW Taylor, Power System Voltage Stability, McGraw- Hill, 1994.

Review of reactive power planning: objectives, constraints, and algorithms
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0 represents the pre-contingency case (base case) being optimized, and superscript to achieve oper- ation at a desired security level, while optimizing an objective problems NAG Numerical Algorithm Group software package NLONN Nonlinear Optimization Neural Network

A particle swarm optimization for reactive power and voltage control consideringvoltage stability
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Technical Research Center, method formulates VVC problem as a mixed integer nonlinear optimization problem and method also considers voltage stability using a continuation power flow technique.

Security-constrained unit commitment with AC constraints
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B. Decomposition Strategy for SCUC Benders decomposition is a popular optimization technique. Various techniques, such as DP, LR, mixed-integer pro- gramming (MIP), genetic algorithms, and are often explained by the nonconvexity of this type of optimization problems.

Energy-constrained modulation optimization
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time Ton = T to communicate these bits, where Ton is a parameter to optimize, and then of the design variables, the constraint 0 = Pcr = Pmaxr is not included in the optimization model and it In addition, the value for Ton needs to be optimized under the delay and peak-power

Application of particle swarm optimization technique for optimal location of FACTS devices considering cost of installation and system loadability
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The optimizations are performed on the parameters namely the location of FACTS devices, their setting The cost is optimized with the following constraints. 2.2. optimization problem of optimal location of FACTS devices is converted into unconstrained optimization problem using The presented reduc- tion of losses refers to the optimized system state without any FACTS-devices. Practical Methods of Optimization, 2nd ed His research interests include power system optimizations, congestion management, and the efficient use of FACTS

Optimal power flow by Newton approach
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combination of both may be optimized. Because of the non-separability, optimizing reactive power control is more difficult than active-power control. Variables In an optimization procedure the variables can change roles. Variables are classified as 1 j Page 3. 2866


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