特高压近区系统不同程度电压暂降下调相机的动态响应  

Dynamic Response of Synchronous Condenser in Different Voltage Sag of UHVDC Near Area System

作　　者：胡一平 许国瑞[1] 刘晓芳[1] HU Yiping;XU Guorui;LIU Xiaofang(School of Electrical and Electronic Engineering,North China Electric Power University,Beijing 102206,China)

机构地区：[1]华北电力大学电气与电子工程学院,北京102206

出　　处：《大电机技术》2018年第6期32-36,72,共6页Large Electric Machine and Hydraulic Turbine

基　　金：国家自然科学基金(51507059和51477049);中央高校基本科研业务费专项资金资助项目2018MS010

摘　　要：新型大容量同步调相机具有高、低电压穿越能力强,短时过载能力大,调节特性基本不受系统电压影响的优点,能较好地满足特高压直流输电系统(UHVDC)对暂态无功的需求。本文将300MVar同步调相机模型与特高压直流输电系统耦合,研究了受端交流系统发生不同程度电压暂降故障时,调相机的动态无功响应特性及其对交直流系统应对故障能力的影响。结果表明,随着交流系统电压降落程度的增加,调相机对电压的支撑作用更加明显,对于交直流系统应对故障能力起到积极作用。The new large capacity synchronous condenser has the advantages of large voltage regulation range,short time overload capacity and not influenced by system voltage.Its operation characteristics can better meet the reactive power demand of UHVDC transmission system.In this paper,the 300MVar synchronous condenser model and UHVDC transmission system are coupled to study the dynamic reactive power response characteristics of the synchronous condenser and its influence on the ability of AC/DC system to deal with fault in voltage sags with different amplitude of receiving end AC system.The conclusion proves that with deepening of the fault degree,the effect of synchronous condenser is more obvious,which can play an active role in dealing with the fault of UHVDC systems.

关 键 词：同步调相机 特高压直流输电系统 电压暂降 无功补偿 

分 类 号：TM342[电气工程—电机]