• Title, Summary, Keyword: TCSC

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Design of TCSC-PSS using Genetic Algorithm for Enhancement of Power System Stability (전력계통의 안정도 향상을 위한 유전알고리즘을 이용한 TCSC 안정화장치 설계)

  • Chung, Mun-Kyu;Chung, Hyeong-Hwan;Hur, Dong-Ryol;Joo, Seok-Min;Chung, Dong-Il
    • Proceedings of the KIEE Conference
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    • pp.227-229
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    • 2003
  • In this paper, we design a Power System Stabilizer for a Thyristor Controlled Series Capacitor(TCSC-PSS) for enhancement of power system stability. Here, PSS parameters are optimized using Genetic Algorithm(GA) in order to maintain optimal operation of TCSC. Simulation results show that the proposed control technique is superior to a conventional PSS in dynamic responses over the wide range of operating conditions and is convinced robustness and reliableness in view of structure.

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The Design and Implementation of 20kVA TCSC Simulator (20kVA 시뮬레이터급 TCSC 설계 및 제작)

  • Jeon J.H.;Kim K.S.;Kim J.W.;Chun Y.H.
    • Proceedings of the KIPE Conference
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    • pp.154-157
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    • 2003
  • In this study, we design and implement the 20kVA TCSC(Thyrister Controlled Series Compensator) simulator It was tested on the KERI simulator The KERI simulator is a analog simulator for power system at the KERI power system division lab. It consist of many power system components, which are a 380V 5kVA generators, scale-downed transmission line modules, transformers, switches, FACTS(Flexible AC Transmission System) devices. In this paper, we present the design and implementation of 20kVA TCSC simulator and its basic test results.

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The Design and Implementation of TCSC Control Hardware for KERI Simulator (시뮬레이터급 TCSC 제어기 설계 및 구현)

  • Jeon J.H.;Kim K.S.;Kim J.W.;Chun Y.H.
    • Proceedings of the KIPE Conference
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    • pp.158-161
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    • 2003
  • KERI simulator is a analog simulator for power system at KERI power system division lab. It consist of many power system components, which are a 380V 5kVA generators, scale-downed transmission line modules, transformers, switches, PACTS(Flexible AC Transmission System) devices. As a FACTS device module, 20kVA TCSC(Thyristor Controlled Series Compensator) module was designed and implemented. In this paper, we present the design and implementation of TCSC control hardware for KERI simulator

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TCSC control for Damping enhancement of intra-area Power Oscillation between Yeongdong and West sea power generation sites (영동권~서해안 발전단지간 연계선로의 전력진동 제동력 향상을 위한 TCSC 적용방안)

  • Hur, Yeon;Choi, Jin-San
    • Proceedings of the KIEE Conference
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    • pp.224-225
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    • 2011
  • 전력진동(Power Oscillation)은 전력이 0.05 Hz ~ 3.0 Hz의 저주파로 진동하는 현상으로서 계통고장 등의 원인으로 의해 취약한 송전선로에서 발생된다. 전력진동의 종류에는 inter-area mode, intra-area mode, local mode 등이 있는데, 국내 전력계통에서는 향후 영동권 원자력단지와 충남 서해안 화력단지 간을 연결하는 초고압 송전선로에서 intra-area mode의 전력진동이 발생할 가능성이 있다. TCSC를 적용하여 전력진동 제동효과를 얻을 수 있다. 본 논문에서 국내 전력계통에 TCSC를 설치함으로써 전력진동이 효과적으로 감소됨을 보인다. simulation 결과, 전력진동이 5% 수준으로 대폭 감소됨을 알 수 있다.

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Design of GA-Fuzzy Controller of TCSC for Enhancement of Power System Stability (전력계통의 안정도 향상을 위한 TCSC의 GA-퍼지 제어기 설계)

  • Chung Mun Kyu;Chung Hyeng Hwan;An Byung Chul;Wang Yong Peel
    • Journal of the Korean Society of Marine Engineering
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    • v.29 no.2
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    • pp.225-235
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    • 2005
  • In this Paper, it was designed the GA-fuzzy controller of a Thyristor Controlled Series Capacitor(TCSC) for enhancement of power system stability. The newly designed controller of TCSC was designed to overcome the nonlinearity such as operating point change of power system as well as to respond to disturbances as uncertainties of line parameters and line fault. So, fuzzy controller by intelligent control theory was used for it. And the fuzzy controller was optimized from a genetic algorithm for complements the demerit such as the difficulty of the component selection of fuzzy controller namely. scaling factor. membership function and control rules. Nonlinear simulation results show that the proposed control technique is superior to conventional PSS in dynamic responses over the wide range of operating conditions and is convinced robustness and reliableness in view of structure.

Eigenvalue sensitivity analysis of power systems including TCSC based on the RCF method (TCSC를 포함하는 전력계통의 RCF 해석법에 기초한 감도해석)

  • Kim, Deok-Young;Park, Sung-Joo
    • Proceedings of the KIEE Conference
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    • pp.237-238
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    • 2008
  • In this paper, the RCF method is applied to analyze small signal stability of power systems including thyristor controlled FACTS equipments such as TCSC. The eigenvalue sensitivity analysis algorithm in discrete systems by the RCF method are presented and applied to the power system including TCSC. The RCF analysis method enabled to precisely calculate eigenvalue sensitivity coefficients of dominant oscillation modes after periodic switching operations. These simulation results are very different from those of the conventional continuous system analysis method such as the state space equation method.

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A Design of Power System Stabilization of TCSC System for Power system Oscillation Damping (전력 시스템의 동요 억제를 위한 TCSC용 안정화 장치 설계)

  • 정형환;허동렬;왕용필;박희철;이동철
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.16 no.2
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    • pp.104-112
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    • 2002
  • In this paper, it is suggested that the selection method of parameter of Power System Stabilizer(PSS) with robustness in low frequency oscillation for Thyristor Controlled Series Capacitor(TCSC) using Geletic Algorithm(GA). A TCSC meddle consists of a stories capacitor and a parallel path with a thyristor valve and a series inductor. Also in in parallel, as is typical with series capacitor applications, is a metal-oxide varistor(MOV) for overvoltage protection. The proposed PSS parameters are optimized using GA in order to maintain optimal operation of TCSC which is expected to be applied in transmission system to achieve a number of benefits under the various operating conditions. In order to verify the robustness of the proposed method, we considered the dynamic response of angular velocity deviation and terminal voltage deviation under a power fluctuation and rotor angle variation.

Design of Fuzzy Controller for Firing Angle of TCSC Using Tabu Search (Tabu Search를 이용한 TCSC의 점호각 제어용 퍼지 제어기의 설계)

  • Kim, Woo-Geun;Hwang, Gi-Hyeon;Mun, Gyeong-Jun;Kim, Hyeong-Su;Park, Jun-Ho
    • Proceedings of the KIEE Conference
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    • pp.37-39
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    • 2000
  • This paper describes the application of Fuzzy Logic Controller (FLC) to Thyristor Controlled Series Capacitor (TCSC) which can have significant impact on Power system dynamics. The function of the FLC is to control the firing angle of the TCSC. We tuned the scaling factors of the FLC using Tabu Search. The proposed FLC is used for damping the low frequency oscillations caused by disturbances such as the sudden changes of small of large loads or the outages in the generators or transmission lines. To evaluate usefulness of the proposed FLC. we performed the computer simulation for single-machine infinite system. The response of FLC is compared with that of PD controller optimized using Tabu Search. Simulation results that the FLC shows the better control performance than PD controller.

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Application of Tabu Search in Design of Fuzzy Controller for Firing Angle of TCSC Improving Transient Stability (과도 안정도 향상을 위한 TCSC의 점호각 제어용 퍼지제어기의 설계에 Tabu 탐색법의 적용)

  • Kim, U-Geun;Hwang, Gi-Hyeon;Kim, Hyeong-Su;Park, Jun-Ho;Park, Jung-Geun
    • The Transactions of the Korean Institute of Electrical Engineers A
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    • v.50 no.12
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    • pp.561-567
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    • 2001
  • This paper describes the application of Fuzzy Logic Controller (FLC) to Thyristor Controlled Series Capacitor (TCSC) which can have significant impact on power system dynamics. The function of the FLC is to control the firing angle of the TCSC. We tuned the scaling factors of the FLC using Tabu Search. The proposed FLC is used for damping the low frequency oscillations caused by disturbances such as the sudden changes of small or large loads or the outages in the generators or transmission lines. To evaluate usefulness of the proposed FLC, we performed the computer simulation fur single-machine infinite system. The response of FLC is compared with that of PD controller optimized using Tabu Search. Simulation results that the FLC shows better control performance than PD controller.

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Maximizing the Overall Satisfaction Degree of all Participants in the Market Using Real Code-based Genetic Algorithm by Optimally Locating and Sizing the Thyristor-Controlled Series Capacitor

  • Nabavi, Seyed M.H.;Hajforoosh, Somayeh;Hajforoosh, Sajad;Karimi, Ali;Khafafi, Kamran
    • Journal of Electrical Engineering and Technology
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    • v.6 no.4
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    • pp.493-504
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    • 2011
  • The present paper presents a genetic algorithm (GA) to maximize social welfare and perform congestion management by optimally placing and sizing one Thyristor-Controlled Series Capacitor (TCSC) device in a double-sided auction market. Simulation results, with line flow constraints before and after the compensation, are compared through the Sequential Quadratic Programming SQP method, and are used to analyze the effect of TCSC on the congestion levels of modified IEEE 14-bus and 30-bus test systems. Quadratic, smooth and nonsmooth (with sine components due to valve point loading effect) generator cost curves, and quadratic smooth consumer benefit functions are considered. The main aims of the present study are the inclusion of customer benefit in the social welfare maximization and congestion management objective function, the consideration of nonsmooth generator characteristics, and the optimal locating and sizing of the TCSC using real code-based GA to guarantee fast convergence to the best solution.