CAJ | 학술논문

在向家坝至上海(简称向上)工程系统调试期间，针对送端(复龙站)系统较弱的情况，对送端系统电压控制进行研究，对单极大负荷运行可能发生的事故及防止对策提出预案。对单极额定负荷运行保护降压试验过程中直流电压、电流和触发角等参量地变化过程进行分析，剖析试验过程中直流控制的调节特性，对交/直流过电压进行分析，提出送端(向家坝侧)无功功率和电压控制参数，并进行临时整定，以确保单极大负荷运行期间送端系统电压的稳定和单极额定负荷70%降压运行试验的成功。通过实测的直流参数，对换流站无功功率和母线电压的计算分析，验证了试验前系统计算结果的正确性，并对送端电压稳定行进行分析，指出整流侧直流电压和电流剧烈波动不会危及系统的安全稳定运行。
재향가패지상해(간칭향상)공정계통조시기간，침대송단(복룡참)계통교약적정황，대송단계통전압공제진행연구，대단겁대부하운행가능발생적사고급방지대책제출예안。대단겁액정부하운행보호강압시험과정중직류전압、전류화촉발각등삼량지변화과정진행분석，부석시험과정중직류공제적조절특성，대교/직류과전압진행분석，제출송단(향가패측)무공공솔화전압공제삼수，병진행림시정정，이학보단겁대부하운행기간송단계통전압적은정화단겁액정부하70%강압운행시험적성공。통과실측적직류삼수，대환류참무공공솔화모선전압적계산분석，험증료시험전계통계산결과적정학성，병대송단전압은정행진행분석，지출정류측직류전압화전류극렬파동불회위급계통적안전은정운행。
The AC system voltage control strategy was researched based on Xiangjiaba to Shanghai (abbr. XS) ultra high-voltage direct current (UHVDC) rectifier side (Fulong station) weak system during XS UHVDC project system commissioning test, and the countermeasure method prevented to fault for monopole rated power operation test was proposed. The variety procedure of DC voltage, DC current and firing angle and so on were analyzed, the UHVDC control system characteristics, AC side and DC side over voltage were analyzed during monopole rated power protective reduced voltage test. The reactive power and voltage control parameters were proposed and carried out to set temporarily at Fulong station, in order to guarantee AC bus voltage stability and reduced voltage 70%test success during monopole rated power operation test. The validity of system calculation analysis results was verified before XS UHVDC system test by rectifier station reactive power and voltage calculation analysis based on DC parameters measured in the test. The DC voltage and current intense variety in rectifier could not infect the system safety and stability operation by analyzing system voltage stability.