风电场联络线距离保护的自适应整定方法  

An Adaptive Setting Method for Distance Protection of Transmission Lines Connecting Wind Farms

作　　者：张华中[1] 王维庆[1] 朱玲玲[1] 何山[1] 

机构地区：[1]新疆大学电气工程学院

出　　处：《电网技术》2009年第3期89-93,98,共6页Power System Technology

基　　金：国家自然科学基金资助项目(50867004);新疆维吾尔自治区高技术研究发展计划项目(200614118)~~

摘　　要：风力发电自身的特殊性导致其输电线路保护难以整定。文章分析了风电场和电网联络线的距离保护随电源电势幅值比、电势相位差、电源等效阻抗、系统频率等参数变化时的动作特性,并基于风电场侧的实时电流和电势与参与发电的发电机信息,提出了仅利用风电场侧信息量自适应整定保护动作边界的方法。仿真结果表明这种自适应整定方法具有优良的性能。It is difficult to set the transmission line protection of wind farm due to its own particularity. The authors analyze the operation characteristic of distance protection of transmission line connecting wind farm with power grid under the variation of parameters such as the amplitude ratio of electromotive force at both sides, the phase difference of electromotive force at both sides, equivalent impedance of sources, system frequency and so on; based on the real-time current and electromotive force at wind farm side as well as the information of wind power generators participating power generation, a method to adaptively set the operation boundary of distance protection by use of the information at wind farm side only is proposed. Simulation results show that the proposed adaptive setting method possesses good performance.

关 键 词：自适应距离保护 整定 动作区域 风电场 电力系统 

分 类 号：TM773[电气工程—电力系统及自动化] TM614