• Title, Summary, Keyword: TCSC

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Performance Analysis of TCSC by Experiment with Scaled Model (축소모형 실험에 의한 TCSC의 성능분석)

  • Han, B.M.;Kang, J.G.;Moon, S.I.;Kim, T.H.
    • Proceedings of the KIEE Conference
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    • pp.550-552
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    • 1997
  • This paper describes a detailed performance analysis of TCSC using experiment with a scaled model. A 3-phase scaled model of TCSC was built with rating of 2kVA to verify the operation. The variable reactance of TCSC with respect to the firing angle of thyristor switch analyzed theoretically and experimentally. And the limit of TCSC operation was investigated in whole range of the thyristor firing-angle. The experimental results with scaled model were compared with the simulation results for a periodic state space model using MATLAB.

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A Study on the Optimal Site of TCSC for Reducing Congestion Cost (혼잡비용 감소를 위한 TCSC의 최적위치에 관한 연구)

  • Lee, Gwang-Ho;Mun, Jun-Mo
    • The Transactions of the Korean Institute of Electrical Engineers A
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    • v.49 no.5
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    • pp.220-225
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    • 2000
  • As a competition is introduced in the electricity supply industry, a congestion problem arises in the transmission network. The congestion causes the transmission cost to increase. One way to decrease the congestion cost is to control the transmission flow through the installation of TCSC(Thyrister Controlled Series Capacitor). This paper deals with the optimal site of the TCSC for reducing the congestion cost using a shadow price which is one of the economic signals for the systems. Test results show that the site of the TCSC is optimal to minimize the congestion cost by the proposed algorithm.

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Real-Time Estimation of Multi TCSC Reference Quantity for Improvement of Transient Stability Energy Margin (과도안정도 에너지 마진 향상을 위한 다기의 TCSC 적정량 실시간 산정)

  • Kim, Su-Nam;Yu, Seok-Gu
    • The Transactions of the Korean Institute of Electrical Engineers A
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    • v.50 no.10
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    • pp.454-463
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    • 2001
  • This paper presents a method for real-time estimation of TCSC reference quantity in order to enhance the power system transient stability energy margin using artificial neural network in multi-machine system. This paper has the three parts, the first part is to determine the lines to be installed by TCSC. The seconds is to estimate the energy margin using by ANN. To get the critical energy for training, we use the potential energy boundary surface(PEBS) method which is one of the transient energy function(TEF) method. And the last is to determine the TCSC reference quantity. In order to make training data for ANN in this step, we use genetic algorithm(GA). The proposed method is applied to 39-bus, 46-line. 10-machine model system to show its effectiveness.

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Eigenvalue Sensitivity Analysis of Discrete Power Systems Including Generator Controllers and TCSC (발전기 제어장치와 TCSC를 포함하는 이산 전력시스템의 고유치 감도해석)

  • Kim, Deok-Young
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.24 no.12
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    • pp.193-200
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    • 2010
  • In this paper, the eigenvalue sensitivity analysis is calculated in the power system which is including both generator controllers such as Exciter, PSS and thyristor controlled FACTS devices in transmission lines such as TCSC. Exciter and PSS are continuously operating controllers but TCSC has a switching device which operates non-continuously. To analyze both continuous and non-continuous operating equipments, the RCF method one of the numerical analysis method in discrete time domain is applied using discrete models of the power system. Also the eigenvalue sensitivity calculation algorithm using state transition equations in discrete time domain is devised and applied to a sampled system. As a result of simulation, the eigenvalue sensitivity coefficients calculated using discrete system models in discrete time domain are changed periodically and showed different values compared to those of continuous system model in time domain by the effect of periodic switching operations of TCSC.

Coordinated Control of TCSC and SVC for System Damping Enhancement

  • So Ping Lam;Chu Yun Chung;Yu Tao
    • International Journal of Control, Automation, and Systems
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    • v.3 no.spc2
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    • pp.322-333
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    • 2005
  • This paper proposes a combination of the Thyristor Controlled Series Capacitor (TCSC) and Static Var Compensator (SVC) installation for enhancing the damping performance of a power system. The developed scheme employs a damping controller which coordinates measurement signals with control signals to control the TCSC and SVC. The coordinated control method is based on the application of projective controls. Controller performance over a range of operating conditions is investigated through simulation studies on a single-machine infinite-bus power system. The linear analysis and nonlinear simulation results show that the proposed controller can significantly improve the damping performance of the power system and hence, increase its power transfer capabilities. In this paper, a current injection model of TCSC is developed and incorporated in the transmission system model. By using equivalent injected currents at terminal buses to simulate a TCSC no modification of the bus admittance matrix is required at each iteration.

Detailed Modeling of TCSC using PSCAD/EMTDC for Power System Analysis (계통 해석을 위한 TCSC의 PSCAD/EMTDC 상세 모델링)

  • Son, Ho-Ik;Nguyen, Thai-Thanh;Kim, Hak-Man;Han, Sangwook;Lee, Jae-gul;Shin, Jeonghoon
    • Proceedings of the KIEE Conference
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    • pp.353-354
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    • 2015
  • TCSC 적용시 송전선로의 송전용량 증대와 효율적인 송전계통 운영 가능하기 때문에 국외에서는 TCSC에 대한 많은 적용 사례와 연구가 진행되어 왔다. 이러한 이유로 국내에서도 송전계통의 안정성과 효율성 증대를 위한 TCSC 도입이 고려되고 있다. 본 논문에서는 리액턴스 제어, 전류 제어 또는 전력 제어, 전력동요 억제를 위한 제어 등 TCSC의 다양한 제어기를 포함하는 상세 모델을 PSCAD/EMTDC를 이용하여 모델링한다.

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Damping Inter-area Low Frequency Oscillations in Large Power Systems with $H_{\infty}$ Control of TCSC PARTI : TCSC Siting (TCSC의 $H_{\infty}$ 제어에 의한 대규모 전력계통의 지역간 저주파진동 억제 PartI : 설치지점 선정)

  • Kim, Yong-Gu;Sim, Gwan-Sik;Song, Seong-Geun;Kim, Yeong-Hwan;Nam, Hae-Gon
    • The Transactions of the Korean Institute of Electrical Engineers A
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    • v.49 no.5
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    • pp.226-232
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    • 2000
  • This paper presents application results of the augmented matrix eigen-sensitivity theories to TCSC siting problem for damping the inter-area low frequency oscillation in the large KEPCO system. First and second-order eigen-sensitivities of the inter-area low frequency oscillation in the large KEPCO system. First and second-order eigen-sensitivities of the inter-area mode are computed fro changes in susceptance of the transmission lines. The lines having high sensitivity are chosen as the initial candidates for installing TCSC. Then for each of the chosen candidates, Bodeplot of the transfer function with line susceptance as the input and the bus voltage at one side of the line as the output is computed. Using the Bode plots, the lines having any zeros near the inter-area mode are screened out since design of TCSC controller is very difficult in such a case. The $H_{\infty}$ TCSC controller installed at any finally chosen candidate is found to be effective in damping the inter-area oscillation, and the proposed TCSC siting algorithm is proved to be valid. Design of $H_{\infty}$ controller is described in Part IIof this paper.

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The Design and Implementation of Controller for TCSC Simulator (시뮬레이터급 TCSC 제어기 설계 및 구현)

  • 전진홍;김광수;김지원;전영환
    • The Transactions of the Korean Institute of Power Electronics
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    • v.9 no.2
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    • pp.150-157
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    • 2004
  • In this paper, We present the design and implementation of controller hardware and software for TCSC(Thyristor Controlled Series Capacitor) simulator, which is a module of power system simulator It consists of many power system components, which are generator models, scale-downed transmission line modules, transformers, switches, FACTS(Flexible AC Transmission System) devices

Harmonic Analysis of TCSC Power Transmission System considering Load Characteristics (부하 특성을 고려한 TCSC 전력송전 시스템의 고조파 해석)

  • 정교범
    • Proceedings of the KIPE Conference
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    • pp.468-471
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    • 2000
  • This paper investigates the harmonics of TCSC power transmission system having nonlinear VI characteristic loads. Nonlinear VI characteristic components are modelled with Nortons harmonic current sources. The system parameters such as line impedances admittances and node voltages and the thyristor switching action are described in complex Fourier series. EMTP simulation studies with a detailed three-phase TCSC power transmission system are also performed in order to verify the harmonic analysis at the steady state.

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Operating Characteristics Analysis of TCSC Simulator with Damping Resistor (제동 저항 인가에 따른 TCSC 시뮬레이터의 특성 분석)

  • Jeon, Jin-Hong;Kim, Kwang-Su;Kim, Ji-Won;Chun, Yeung-Han
    • Proceedings of the KIEE Conference
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    • pp.193-195
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    • 2003
  • In this paper, we present the analysis results of TCSC(Thyritor Controlled Series Capacitor) operating characteristics with damping resisters. This TCSC system is designed for KERI simulator. It consists of many power system components, which are generator models, scale-downed transmission line modules, transformers, switches, FACTS(Flexible AC Transmission System) devices.

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