Parameter Design and Steady State Characteristic Analysis of TCPSTs in a EHV-Grid

doi:10.11930/j.issn.1004-9649.2013.11.36.5

Abstract

Abstract: The uneven power load flow constantly leads to the flow congestion of the East China Power Grid with some lines having heavy load while other lines having inadequate utilization. In the mean time, building new transmission corridors will face many difficulties. As a result, the overall transmission capacity of the power grid is restricted seriously. In addition, the regional power grid also needs to enhance the transient stability and suppress the system oscillation. Theoretically, the working mechanism of the thyristors controlled phase shifters (TCPSTs) and the influence of transformer’s leakage reactance on the phase shift angle are analyzed. According to the main circuit of TCPSTs, a new parameter design method of main equipment, such as shunt and series transformers, etc., was proposed. Then the steady state characteristics of the TCPSTs are simulated based on a dual generators system to verify the correctness of the proposed parameter design method. Finally, a 500 kV loop network in East China Power Grid is analyzed for power flow optimization, in which the installation locations of TCPSTs are selected and a 4-generator loop network model with the TCPSTs is established based on the real-time digital simulation (RTDS) platform. The simulation result verifies that the TCPST can effectively optimize the active power distribution in the loop network and achieve the anticipated goal.

Key words: thyristors controlled phase shifter(TCPST), equipment parameter design, real time digital simulation(RTDS), steady state characteristic analysis

CLC Number:

TM711

YU Hong-yang, ZHOU Fei, YANG Zeng-hui. Parameter Design and Steady State Characteristic Analysis of TCPSTs in a EHV-Grid[J]. Electric Power, 2013, 46(11): 36-41.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2013.11.36.5

https://www.electricpower.com.cn/EN/Y2013/V46/I11/36

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