FACTS Devices Loss Consideration in Placement Approach for Available Transfer Capability Enhancement

2020 ◽  
Vol 49 ◽  
pp. 104-129 ◽  
Author(s):  
Babatunde Olusegun Adewolu ◽  
Akshay Kumar Saha
Keyword(s):  
Active Power ◽  
Loss Reduction ◽  
Available Transfer Capability ◽  
Sensitivity Equation ◽  
Flexible Ac Transmission ◽  
Flexible Ac Transmission System ◽  
Power Loss Reduction ◽  
Transfer Capability ◽  
Bus Voltage ◽  
Ac Transmission

This paper incorporates Flexible AC Transmission System (FACTS) device loss with the general loss sensitivity equation for the determination of optimum location for its placement in deregulated power networks, with objectives of Available Transfer Capability (ATC) enhancement, bus voltage improvement and loss reduction. A detailed mathematical model in terms of circuit system parameters is presented based on FACTS loss amalgamation approach. Thyristor Controlled Series Capacitor (TCSC) FACTS device is considered for simulation and analysis because of its capability to control active power among other parameters. The TCSC location is established based on analysis of sensitivity factors obtained from partial derivatives of the resultant loss equations (including FACTS) with respect to control parameters. ATC values are obtained using ACPRDF method and with TCSC in place, these values are enhanced for different bilateral and multilateral power transactions. IEEE 5 Bus system is used for the demonstration of the effectiveness of this approach. Placement with this method resulted into ATC enhancement of more than 60% well above the values obtained when TCSC was placed with thermal limit method. In addition, a substantial bus voltage improvement of up to 3% deviation minimization as well as up to 10% active power loss reduction was recorded with this placement.

RELIABILITY MANAGEMENT AND IMPROVEMENT FOR PLANNING AND OPERATIONAL PROCESS ENHANCEMENT MEASURES IN DEREGULATED POWER SYSTEMS USING ATC

2010 ◽  
Vol 17 (03) ◽  
pp. 275-289
Author(s):  
V. VIJAY VENU ◽  
A. K. VERMA
Keyword(s):  
Power Systems ◽  
Planning Horizon ◽  
Available Transfer Capability ◽  
Reliability Management ◽  
Flexible Ac Transmission ◽  
Flexible Ac Transmission System ◽  
Facts Devices ◽  
Transfer Capability ◽  
Ac Transmission ◽  
Deregulated Power Systems

In this paper, beginning with a concise overview of the Available Transfer Capability (ATC) evaluation methods, we make a proposition for reliability management in the planning horizon of deregulated power systems through the concept of Adequacy Resiliency. The derived indices are meant as indicators of adaptability of power systems to ensure the required reliability levels. Improvements to this conceptualization upon the deployment of Flexible AC Transmission System (FACTS) devices are then put forward. We also explore the option of employing the created indices to the operational horizon of power systems, explaining the means of market enhancement. Core reliability issues arising out of the usage of FACTS are then discussed.

scholarly journals Hybrid control strategies of SVC for reactive power compensation

2020 ◽  
Vol 19 (2) ◽  
pp. 563
Author(s):  
Mothanna Sh. Aziz ◽  
Ahmed G. Abdullah
Keyword(s):  
Reactive Power ◽  
Hybrid Control ◽  
Control Strategies ◽  
Hybrid Genetic Algorithm ◽  
Static Var Compensator ◽  
Flexible Ac Transmission ◽  
Flexible Ac Transmission System ◽  
Dynamic Voltage ◽  
Bus Voltage ◽  
Ac Transmission

<span>This article shows a prospective utilizations of flexible AC transmission system (FACTS) controls, like the static VAR compensator (SVC). One of the major motives for setting up an SVC is to recover dynamic voltage controller and thus increase system load aptitude. Static VAR compensator system proposed in this work consists of thyristor switched capacitor and thyristor controlled reactor sets, this style of SVC modelled using MATLAB simulink toolbox. A hybrid genetic algorithm with PI and fuzzy logic controls that used to control and expand the grid performance of the power system. The model results reveal that the Static Var Compensation contribute a decent result in upholding bus voltage after the power network is in an active and steady moment, besides it has a capability of the constancy control. It can totally work as a significant plan of reactive power recompense in power networks. </span>

Enhancement of Available Transfer Capability Using FACTS Controller

2014 ◽  
Vol 573 ◽  
pp. 340-345
Author(s):  
V. Bhavithira ◽  
A. Amudha
Keyword(s):  
Power Flow ◽  
Transient Stability ◽  
Transmission System ◽  
Load Flow ◽  
Unified Power Flow Controller ◽  
Distribution Factor ◽  
Available Transfer Capability ◽  
Flexible Ac Transmission System ◽  
Transfer Capability ◽  
Ac Transmission

Abstract. This paper discusses about the available transfer capability by using Unified Power Flow Controller-UPFC. Flexible AC Transmission System-FACTS devices helps to reduce power flow on overloaded lines, thereby increasing the loadability of the power system, transient stability, damp out oscillations and also provide security and efficient transmission system. UPFC is one of the most versatile FACTS controllers. It is used for both shunt and series compensation. Newton Raphson method is used to calculate load flow for IEEE 30 bus system. By optimally placing the FACTS device Available Transfer Capability-ATC is improved. The ATC is calculated by using AC Power Transfer Distribution Factor- ACPTDF and this method is based on the sensitivity approach. Imperialistic Competitive Algorithm (ICA) is used to find optimal location of placing UPFC to improve ATC.

An Advanced Technology for Enhancement of Transmission Loadability Using FACTS Devices

2013 ◽  
Vol 302 ◽  
pp. 502-508 ◽  
Author(s):  
Chao Ming Huang ◽  
Yann Chang Huang ◽  
Kun Yuan Huang
Keyword(s):  
Optimal Solution ◽  
Transmission System ◽  
Advanced Technology ◽  
Line System ◽  
Flexible Ac Transmission ◽  
Flexible Ac Transmission System ◽  
Facts Devices ◽  
Transfer Capability ◽  
Thyristor Controlled Series Capacitor ◽  
Ac Transmission

This paper proposes an advanced technology to enhance the transfer capability of transmission system using flexible AC transmission system (FACTS). FACTS consists of thyristor-controlled series capacitor (TCSC), thyristor-controlled phase shifting transformer (TCPST), thyristor-controlled voltage regulator (TCVR) and static var compensator (SVC). The location of FACTS and their associated values dominate the transfer capability of transmission system. To determine the optimal solution of FACTS, this paper presents an enhanced differential evolution (EDE) approach to deal with this type of optimization problem. In comparison with basic DE, EDE uses a variable scaling mutation to adaptively adjust the mutation operation and enhance the global search capability of basic DE. The proposed method is verified on an IEEE 30-bus 41-transmission line system. To verify the performance of the proposed method, the basic DE and particle swarm optimization (PSO) methods are also implemented using the same database. The results show that the proposed approach provides better transmission loadability with less execution time than the existing methods.

Combined Test of Capacity Regulating in 1100kV Controlled Shunt Reactor Valve-Control System

2014 ◽  
Vol 977 ◽  
pp. 334-337
Author(s):  
Xi Lei ◽  
Gui Zhi Xu ◽  
Ke Zheng Xing
Keyword(s):  
Control System ◽  
Test Method ◽  
System Stability ◽  
Shunt Reactor ◽  
Flexible Ac Transmission ◽  
Flexible Ac Transmission System ◽  
Combined Test ◽  
Controlled Shunt Reactor ◽  
Ac Transmission ◽  
Valve Control

As a flexible AC transmission system equipment, controlled shunt reactor is becoming increasingly important in the grid with the development of EHV / UHV transmission systems. Since currently rated voltage of controlled shunt reactor has developed to 1100kV, as its capacity control system, or valve-control system, stability and reliability test is very important. In this paper, the test circuit and method for the valve-control system in the laboratory or the test station for combined adjustment test is put forward. By adjustment of power supply and the device parameter, the valve-control system can put the voltage and current of the device to be the same as the on-set operation. Actual test of the world's first 1100kV controlled shunt reactor valve-control system shows that, the test method in this paper is correct and feasible, and the objective of assessment can be achieved.

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