基于直流电压维持法的TSC投切电路研究  

TSC Switching Circuit Based on DC Voltage Maintenance Method

作　　者：张俊 岳倩倩[1] 蒋龙云 ZHANG Jun;YUE Qianqian;JIANG Longyun(School of Electronic and Electrical Engineering,Anhui Sanlian University,Hefei 230601,China)

机构地区：[1]安徽三联学院电子电气工程学院,安徽合肥230601

出　　处：《宁波工程学院学报》2022年第1期12-18,共7页Journal of Ningbo University of Technology

基　　金：安徽省教育厅高校自然科学重点项目(KJ2019A0900,KJ2020A0799,KJ2020A0807)。

摘　　要：针对传统TSC装置在无功需求快速波动时响应慢、补偿电容无法快速再次投入电网使用的问题,提出一种将有源器件与无源器件结合的无功补偿主电路以及“直流电压维持”控制方法。从分析传统电路局限性入手,逐步给出了该电路拓扑,并分析了工作原理及直流电压维持控制方法;通过建立仿真模型,将传统电路及该电路的投切过程进行对比分析,证明此电路能够维持补偿电容上的电压略小于系统电压,使补偿系统时刻处于“热备投”状态,为补偿电容再次快速投入创造条件。在电容切除后紧跟的一个系统周期内,补偿电容再次无冲击投入电网,为解决传统主电路投切的问题提供解决方案。To solve the problem that the traditional TSC device responds slowly when the reactive power demand fluctuates rapidly, and the compensation capacitor cannot be put into the power system again quickly, a reactive power compensation central circuit topology combined with active and passive devices and a control method of DC voltage maintenance are proposed. The new circuit topology is given step by step by analyzing the limitation of the traditional circuit, and the working principle and the control method of the circuit are analyzed. the conventional topology and the new topology are analyzed and compared by establishing the simulation model. It is proved that the voltage on the compensation capacitor could be maintained slightly lower than the system voltage,so that the compensation system is in the hot standby state all the time, which creates conditions for the rapid input of compensation capacitor again. It shows that the compensation capacitor in the new topology can be put into work within the following system cycle after getting out of the power system. A solution to the problem of the traditional primary circuit is provided.

关 键 词：晶闸管投切电容器 无功补偿 直流电压维持 拓扑 快速响应 

分 类 号：TM714[电气工程—电力系统及自动化]