CAJ | 학술논문

如何限制重潮流下的1000 kV同塔双回长线路潜供电流以提高单相重合闸的成功率，是一个亟需解决的问题。考虑了6种可能的相序排列方式，对重潮流下1000 kV同塔双回长线路的潜供电流进行了计算分析。研究表明，从限制潜供电流和恢复电压的角度来看，对于带高抗补偿的同塔双回换位线路，逆相序是最佳选择；而当线路较长、潮流较重时，则不推荐采用异相序ABC/BCA和ABC/CAB。当线路导线、杆塔、长度、潮流、高抗容量等条件已确定时，选择适当的高抗中性点小电抗及相序排列方式，是2种基本的限制措施。若上述措施仍不能满足要求，则有2种可选的措施：1）采用2个全循环换位(B型换位)；2）采用可控的高抗中性点小电抗。
여하한제중조류하적1000 kV동탑쌍회장선로잠공전류이제고단상중합갑적성공솔，시일개극수해결적문제。고필료6충가능적상서배렬방식，대중조류하1000 kV동탑쌍회장선로적잠공전류진행료계산분석。연구표명，종한제잠공전류화회복전압적각도래간，대우대고항보상적동탑쌍회환위선로，역상서시최가선택；이당선로교장、조류교중시，칙불추천채용이상서ABC/BCA화ABC/CAB。당선로도선、간탑、장도、조류、고항용량등조건이학정시，선택괄당적고항중성점소전항급상서배렬방식，시2충기본적한제조시。약상술조시잉불능만족요구，칙유2충가선적조시：1）채용2개전순배환위(B형환위)；2）채용가공적고항중성점소전항。
It is an issue to be resolved urgently how to restrict secondary arc current in 1 000 kV double-circuit long-distance transmission lines on the same tower under heavy load flow to raise the success rates of single-phase auto-reclosure. Considering six possible phase arrangements, the computational analysis on the secondary arc current in 1 000 kV double-circuit long-distance transmission lines on the same tower under heavy load flow is performed. Research results show that from the viewpoint of restricting secondary arc current and voltage recovery, the reverse phase sequence arrangement is the best choice for double circuit transposed transmission lines on the same tower with HV shunt reactors;however, under lines with longer lengths and heavier load flow, it is not recommended to adopt the phase sequence arrangement of ABC/BCA and ABC/CAB for the lines on the same tower. When the conditions of conductor type, types of transmission towers, load flow and capacity of HV shunt reactors are determined, selecting appropriate neutral grounding reactor for HV shunt reactors and proper phase sequence arrangement can be regarded as two basic measures to restrict the secondary-arc current. When the demand of restricting secondary-arc current is not yet satisfied by using above-mentioned two measures, there are still two selectable measures: A) adopting two times of complete cycle transposition along the full length of transmission line and B) adopting controllable neutral grounding reactor for HV shunt reactors.