摘要
以直流侧取电的链式静止同步补偿器(STATCOM)为研究对象,研究链式STATCOM在预充电状态下的直流侧电压的稳定状况。分析了直流侧在不采取稳压方案时各个模块电压发散的原因,总结了三种并联阻抗的稳压方案,分别为直流侧并联电阻、交流侧并联电阻以及交流侧并联电容。从理论上详细分析了模块稳压的机理,经过公式推导,给出各种方案下确定参数的详尽计算过程,并且给出了多个模块下的简化计算公式。最后通过4个模块的低压实验对所述理论进行了实验验证。
This paper focuses on the cascaded static synchronous compensator （STATCOM） with energy gained from the DC side, and does researches on the stability of DC voltage when STATCOM is in pre-charge state. The reason that the DC voltage would diffuse if no precaution is taken is analyzed. Then, three methods of shunt impedance are summed up, viz. shunt resistors on DC side, shunt resistors on AC side and shunt capacitors on AC side. The mechanism of balancing the DC voltage is analyzed in detail, and parameter design procedures are given for every method by formula derivation. Simplified formulas are also given to make calculation easier. At last, experiment is done to validate the theoretical analysis through low voltage experiments of four modules.
出处
《电力系统自动化》
EI
CSCD
北大核心
2017年第4期150-157,共8页
Automation of Electric Power Systems
基金
国家自然科学基金资助项目(51577088)
江苏省产学研合作前瞻性联合研究项目(BY2015003-008)~~
关键词
链式静止同步补偿器
直流侧取电
预充电稳压
并联电阻
并联电容
cascaded static synchronous compensator （STATCOM）
energy-gaining in DC link
balancing voltages in precharge state
shunt resistor
shunt capacitor
