TCSC减弱次同步谐振能力的仿真分析
朱玮珂
（国网苏州供电公司，江苏 苏州 215004）
摘 要：晶闸管控制串联补偿器(TCSC)作为柔性交流输电设备，可以用来解决次同步谐振(SSR)问题。通过对TCSC电路模型的分析，得出其影响SSR问题的机理，并推导出其等效电路模型。分别设置TCSC和其等效电路运行在感性和容性的条件下，对TCSC电路模型及其等效模型在SSR现象中的效果进行仿真。结果表明，感性条件下TCSC和其等效电路可以对SSR现象起到阻尼作用，但是容性条件下则会增强SSR现象，且TCSC由于具有更好的动态特性，其阻尼作用要优于等效电路。
关键词：晶闸管控制串联补偿器；次同步谐振；等效电路；仿真
中图分类号：TM761 文献标识码：A 文章编号：1007-3175(2017)11-0025-05
Simulation Analysis of Thyristor Controlled Series Compensator Weakening Subsynchronous Resonance Capacity
ZHU Wei-ke
（State Grid Suzhou Power Supply Company, Suzhou 215004, China）
Abstract: Thyristor control series compensator (TCSC), as flexible alternation current (AC) transmission equipment, can be used to solve the problem of sub-synchronous resonance (SSR). Via the analysis of TCSC circuit model, the mechanism of SSR problem was obtained and its equivalent circuit model was deduced. In addition, TCSC and its equivalent circuit were set up under the conditions of inductive and capacitive conditions, and the effect of TCSC circuit model and its equivalent model in SSR phenomenon was simulated. The results show that the TCSC and its equivalent circuit can damp the SSR phenomenon under the perceptual condition, but it will enhance the SSR phenomenon under the capacitive condition. The TCSC perform better in SSR than characteristics circuit due to its dynamic characteristics.
Key words: thyristor controlled series compensator; sub-synchronous resonance; equivalent circuit; simulation
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