CAJ | 학술논문

观音岩电站送出直流工程是南方电网异步联网工程的重要组成部分。相对于其他直流工程，该直流的特点主要有：①送受端换流站可能存在的运行方式较多；②受端换流站送出线路加装串补，且最终串补度尚未确定。针对观音岩电站送出直流工程的特点，采用NIMSCAN程序对该直流工程送受端换流站的系统谐波阻抗特性进行了研究。对于送端换流站，比较了联网运行方式和孤岛运行方式下的系统等值谐波阻抗特性；对于受端换流站，按照送电方向的不同对系统的谐波阻抗进行分别计算。最后，分析了换流站出线串补的串补度变化对系统谐波阻抗参数的影响。
관음암전참송출직류공정시남방전망이보련망공정적중요조성부분。상대우기타직류공정，해직류적특점주요유：①송수단환류참가능존재적운행방식교다；②수단환류참송출선로가장천보，차최종천보도상미학정。침대관음암전참송출직류공정적특점，채용NIMSCAN정서대해직류공정송수단환류참적계통해파조항특성진행료연구。대우송단환류참，비교료련망운행방식화고도운행방식하적계통등치해파조항특성；대우수단환류참，안조송전방향적불동대계통적해파조항진행분별계산。최후，분석료환류참출선천보적천보도변화대계통해파조항삼수적영향。
Guanyinyan HVDC project is an important part of asynchronous interconnection project in Southern Power Grid . Compared to other HVDC projects , this project has more operation modes and the lines of inverter station connected to the sys -tem contain the series compensation whose value is still in studying .Based on the characteristics of this project , the equivalent harmonic impedances of rectifier station and inverter station are studied with NIMSCAN program .For the rectifier station , the characteristics of equivalent harmonic impedance of power system under grid -connected operation mode and island operation mode are compared .For the inverter station , the harmonic impedance of system is separately calculated according to the differ -ent transmission directions .In the end, the influence of the series compensation degree on harmonic impedance parameters is analyzed .