同杆并架双回线继电保护工程应用实践  

Application of relay protection for double-circuit lines on the same pole

作　　者：李瑞生 鄢安河[2] 樊占峰 曹丽璐 

机构地区：[1]许继电气股份有限公司,河南许昌461000 [2]河南省电力公司,河南郑州450052

出　　处：《电力系统保护与控制》2010年第5期82-84,共3页Power System Protection and Control

摘　　要：同杆并架双回输电线路由于其良好的经济性,在220kV输电线路上得到了广泛的推广,但由于其结构上的特殊性,故障情况十分复杂,现有的继电保护功不能很好地适应其发展。在洛阳牡-马同杆并架双回输电线路工程实践中,通过对双回输电线路进行深入研究,采用基于故障分量方向的综合选相元件、基于六相序阻抗的距离保护原理、自适应重合闸判据及顺序重合策略、横联差动保护,并能够实现五相运行、'准三相'及其运行情况下各项后备保护功能。Double-circuit lines on the same pole, as a result of its good efficiency, obtains the widespread promotion on the 220 kV transmission line. Because of the special structure of double-circuit lines, the situation of fault is complex. The existing relay protection function is not suitable for the development. By analyzing the project in Luoyang Mu-Ma double-circuit lines on the same pole, a new double-circuit lines protection device with many features and advantages is researched, which has phase selecting based on fault component direction, distance protection based on six foreword impedance, adaptive auto throw-in and gradational throw-in strategy, and six-sequence transverse differential protection. The proposed device can achieve five phases and quasi- three- phase running.

关 键 词：同杆并架 准三相 五相运行 六相序阻抗 应用实践 

分 类 号：TM773[电气工程—电力系统及自动化]