330 kV安康-南郊同杆并架双回线保护运行综述

３３０ｋＶ安康－南郊同杆并架双回线，是安康电厂唯一送出主干线路，线路的安全运行对安康电厂和陕西电网都是极为重要的。特别是同杆架设ＡＢＣ６根线，穿越秦岭山脉，不但会发生单回线各类故障，而且会发生各类型的复杂跨线故障。在发生复杂的故障时，要求双回线组组合ＡＢＣ三相运行。对同杆双回线装设的ＣＫＦ－３、ＣＫＪ－３、ＪＣＺＣ－２１型保护装置的运行情况进行了分析总结，并对同杆双回线运行１０年发生的故障类型进行了统计。

Summary on the operation of 330 kV Ankang-Nanjiao co-pole double-circuit line

The 330 kV Ankang Nanjiao co pole parallel double circuit line is unique outgoing trunk line of the Ankang Hydropower Plant. The safe operation of the circuit line is very important to the Ankang Hydropower Plant and the Shaanxi Power Grid. Especially six lines in the same pole not only could produce different single line failures but also different complex trans line failures. When complex failure occurs, it is required for the double circuit line to form ABC three phase operation. We have analyzed and summed up the operation data of the CKF 3, CKJ 3 and JCZC 21 protection installations equipped in the co pole double circuit line and made statistics on the failures occurred in the co pole double circuit line for 10 years.