直流融冰试验在宁波电网的应用  

Application of DC Ice Melting Test in Ningbo Power Grid

作　　者：黄森炯 王京锋 许育燕 

机构地区：[1]国网宁波供电公司,浙江宁波315010 [2]国网浙江象山县供电公司,浙江象山315700

出　　处：《电工电气》2014年第6期31-33,58,共4页Electrotechnics Electric

摘　　要：直流融冰是输电线路应对冰灾的一种有效手段。以一条220kV线路直流融冰试验为例,对融冰线路两侧状态的定义和调度操作要求作了明确规定,分析了通过对矩阵闸刀的切换来调整直流融冰装置的融冰模式,并给出了继电保护定值的整定原则。实际试验数据结果分析表明,优化电网中直流融冰装置的布点原则、操作流程并考虑各种风险和约束的融冰调度策略可有效提高融冰效果。DC ice melting is an effective counter measure for power transmission lines. Taking a DC ice melting test of 220 kV line as an example, this paper clearly stipulated the deifnition of each side’s state of ice melting line and scheduling operation rules. Analysis was made to the ice melting mode of DC ice melting device adjusted by switching matrix switches and the setting principle of relay protection set value were given. The actual test data shows that to effectively raise ice melting effect is to optimize the point-distributing principle and operation lfow of DC ice melting device in power grid, in consideration of various risk and restriction ice melting dispatching strategy.

关 键 词：直流融冰 冰灾 融冰模式 整定 优缺点 

分 类 号：TM752[电气工程—电力系统及自动化]