CAJ | 학술논문

分析高肇直流肇庆换流站换流变压器二次侧电压监视频繁告警,指出此种现象是换流变压器分接头在调整过程中其档位信息跳变为–6档所致.增加防止跳变的程序,并利用包括兴安直流控制保护装置的 RTDS 模型进行仿真验证,结果表明,该反措能有效地防止上述监视频繁告警.
분석고조직류조경환류참환류변압기이차측전압감시빈번고경,지출차충현상시환류변압기분접두재조정과정중기당위신식도변위–6당소치.증가방지도변적정서,병이용포괄흥안직류공제보호장치적 RTDS 모형진행방진험증,결과표명,해반조능유효지방지상술감시빈번고경.
There was a phenomenon of frequent secondary-side-voltages-monitoring alarm of converter transformer at Zhaoqing Converter Station. This paper analyzes the phenomenon and points out that it was caused by the tap changer jumping to the “-6”position of converter transformer. A program against the jumping is proposed as a countermeasure, and simulation tests are carried out by using RTDS and the control and protection cubicles of GGI and GGII. The test results show that the countermeasure works effectively.