±500kV换流站无功补偿运行特性与优化策略研究  

Study on Reactive Power Compensation Operation Characteristics and Optimization Strategy of±500kV Converter Station

作　　者：刘家军[1] 谭雅岚[1] 张年鲲 LIU Jiajun;TAN Yalan;ZHANG Niankun(Institute of Water Resources and Hydro⁃electric Engineering,Xi’an University of Technology,Xi’an 710048,China)

机构地区：[1]西安理工大学水利水电学院,西安710048

出　　处：《电力电容器与无功补偿》2020年第1期52-58,共7页Power Capacitor & Reactive Power Compensation

摘　　要：换流站无功补偿是保证交直流系统正常运行的重要手段。文中研究了宝鸡换流站的无功功率平衡以及换流阀无功功率消耗的机理与计算方法,分析了该换流站在目前的“750 kV固定高抗与66 kV并联电容、电抗和±500 kV换流站交流滤波器补偿”配置模式下的无功功率补偿和系统电压调节过程。对66 kV侧投入并联电抗后,330 kV和750 kV母线电压的变化情况进行了仿真分析。同时,指出了±500 kV直流系统中交流滤波器的投切过程中存在的问题,对存在的问题提出了优化方案,并通过仿真对优化方案进行了验证。The reactive power compensation of the converter station is an important means to ensure normal operation of the AC and DC system.In this paper,the reactive power balance of Baoji Converter Station and the mechanism as well as calculation method of the reactive power consumption of the converter valve are studied.The reactive power compensation and system voltage regulation process of the converter station in the current configuration mode of 750 kV shunt reactor,66 kV shunt capacitor,reactance and±500 kV AC filter compensation are analyzed.After switching of the shunt reactance at 66 kV side,the variation of the 330 kV and 750 kV bus voltages are simulated and analyzed.Meanwhile,the problems in the switching process of the AC filter in±500 kV DC system are pointed out,and the optimization scheme which is proposed for the existing problems is verified by simulation.

关 键 词：无功功率平衡 无功功率消耗 无功功率补偿 

分 类 号：TM721[电气工程—电力系统及自动化] TM732