风电接入对继电保护的影响(七)——风电场送出电网继电保护配置研究  

Impact of wind farm integration on relay protection(7): analysis of relay protection configuration for wind farm outgoing power grid

作　　者：张保会[1] 原博[1] 王进[1] 王小立[1,2] 黄仁谋[3] 吴伟明[3] 

机构地区：[1]西安交通大学电气工程学院,陕西西安710049 [2]宁夏电力公司调度中心,宁夏银川750001 [3]海南电网公司,海南海口570100

出　　处：《电力自动化设备》2013年第7期1-5,共5页Electric Power Automation Equipment

基　　金：国家高技术研究发展计划(863计划)资助项目(2012-AA050201);Project supported by the National High Technology Research and Development Program of China(863 Program)(2012AA-050201)

摘　　要：开展大规模风电场并网送出电网继电保护实时数字仿真(RTDS)试验,指出现有风电场送出电网继电保护存在的问题,给出风电场送出电网保护配置建议:110 kV送出线路的主保护采用分相电流差动保护,后备保护采用解微分方程算法的距离Ⅰ段,或将相量距离Ⅰ段保护延时0.15 s动作,同时配置常规距离Ⅱ、Ⅲ段及零序电流保护;送出变压器主保护采用差动保护,励磁涌流判据采用间断角鉴别、时差法等方法,后备保护配置复合过电流保护及零序电流方向保护;330 kV送出线路主保护配置2套独立工作的分相电流差动保护,采用电压突变量选相元件及基于零序分量的方向元件,后备保护配置与110 kV送出线路相同。The RTDS experiment is carried out for the relay protections of outgoing power grid of large-scale grid-connected wind farm and its existing problems are pointed out. The corresponding suggestions about the relay configuration are proposed：the main protection of 110 kV outgoing transmission line should adopt the phase-split current differential protection while its backup protection adopt the distance section Ⅰ using differential equation algorithm,or the time setting of phasor-based distance section l be prolonged by 0.15 s while the conventional distance section ,Ⅱdistance section Ⅲ and zero-sequence current protection be equipped ;the main protection of outgoing transformer should adopt the differential protection with the inrush current criterion using the dead angle identification,time-difference method,etc, while its backup protection adopt the compound over-current protection and zero-sequence current direction protection ;the main protection of 330 kV outgoing transmission line should adopt two independent sets of phase-split current differential protection with the voltage sudden-change phase selector and zero-sequence directional component while its backup protection adopt the same configuration as that of 110 kV outgoing transmission line.

关 键 词：风电场 继电保护 保护配置 RTDS试验 模型 

分 类 号：TM614[电气工程—电力系统及自动化] TM77