三端直流系统电压控制策略分析及测量异常故障定位方法研究

Voltage Control Strategy Analysis and Measurement Abnormal Fault Location Method Research for Three-Terminal DC System

鉴于南网各回直流曾多次发生直流电压测量异常故障,本文以禄高肇三端直流系统为例,着重介绍直流电压控制策略,并采用RTDS仿真系统对直流电压测量异常进行仿真,分析电压测量异常时控制系统的响应情况,通过大量的仿真研究,全面梳理了直流电压控制响应策略,总结了电压测量异常时的故障现象及处置方法,对现场运维工作具有一定的指导价值。

In view of the abnormal DC voltage measurement fault happened many times in each DC Circuit of the southern power grid,this paper takes the Lugaozhao three-terminal DC system as an example to introduce the DC voltage control strategy emphatically,RTDS simulation system is used to simulate the abnormal DC voltage measurement,and the response of the control system is analyzed.Through a lot of simulation research,the DC voltage control response strategy is comprehensively carded,and the fault phenomena and treatment methods are summarized when the voltage measurement is abnormal.