灵宝换流站交流滤波器性能研究

Study on Performance of AC Filter in Lingbao Converter Station

根据西北～华中联网背靠背直流工程功能规范书中所规定的条件 ,分析了计算灵宝换流站 2 2 0kV侧谐波电流和交流滤波器性能所需的数据和交流滤波器设计中应考虑的因素 ,提出了交流滤波器型式选择的一般原则。用ABB公司的HAP程序计算 2 2 0kV侧谐波电流和交流滤波器性能的结果表明交流滤波器指标满足功能规范书的要求。

This paper illustrates fundamental aspects of the design of filters by the equivalent circuit consisting of harmonic source, filters impedance and AC system impedance. According to the condition defined in the Function Specification of NWC HVDC BTB Project, the data needed for calculating the harmonic current of the converter and the factors which should be taken into consideration in AC filter design are analyzed. The general principles to be followed for selecting the AC filter type are presented. HAP program by ABB is applied to calculate the harmonic current at side of 220 kV and the filters performance. The obtained results show that the AC filters performance meets the requirements of harmonic limits given in the Function Specification.