摘要
传统的高压直流输电(high voltage direct current,HVDC)系统一般在换流站交流网侧布置滤波兼无功补偿装置,谐波与无功功率通过换流变压器回馈网侧时会对变压器产生不良的影响。作者基于自耦补偿与谐波屏蔽的换流变压器,针对某实际的HVDC模拟系统,提出了与该变压器配套的滤波装置的接线方案,并将外罚函数法和遗传算法相结合,对上述滤波装置进行优化设计,建立了以初期投资最小为优化目标、满足系统无功需求的滤波器优化配置的数学模型。算例计算和仿真结果表明了上述优化模型及其滤波方式的正确性和有效性。
In the traditional high voltage direct current （HVDC） system, the filters are always placed in the AC net side of the converter. It cannot overcome the had effects to the transformer when the harmonics and reactive power flows into the AC net through the converter transformer. And the traditional passive filter＇s function is also limited for avoiding the resonance and harmonic enlarging. The auto-compensator and harmonics shielding converter transformer can be used to solve these problems, which is based on the principle of the winding ampere and tum＇s balance. This paper elaborates this kind of transformer filter mechanism. In the view of the HVDC system, a new winding connection plan is proposed, and the filter optimization model is created. Then, the optimization design is realized used the penalty function and genetic algorithm. The calculation and simulation results confirm this filter way＇s accuracy and validity.
出处
《电网技术》
EI
CSCD
北大核心
2007年第9期22-26,共5页
Power System Technology
基金
湖南省重大科技项目(05GK1002-1)
实用新型专利号(ZL200320124015.6)
发明专利公开号(CN1553553A)
关键词
自耦补偿
谐波屏蔽
换流变压器
优化模型
高压直流输电(HVDC)
auto-compensator
harmonics shielding
converter transformer
optimization model
high voltage direct current （HVDC）
