基于GPRS的风电并网稳定控制系统  

Wide-area protection and control system based on GPRS for grid-connected wind farm

作　　者：刘臣宾[1] 夏彦辉[1] 常东旭[1] 任祖怡[1] 李振宇 陈刚 梅长文[1] 

机构地区：[1]南京南瑞继保电气有限公司,江苏南京211102 [2]阜新市供电公司电力调度所,辽宁阜新123100

出　　处：《电力自动化设备》2010年第7期104-108,共5页Electric Power Automation Equipment

摘　　要：研究了风电场并网存在的稳定问题,针对风电场通信通道的特殊性,研制了基于GPRS的风电场并网稳定控制系统,实现了风电并网的有功潮流和无功电压的综合自动控制。系统应用GPRS实现了如下通信功能:数据缓冲功能、心跳报文功能、自动重拨功能、数据标识功能、软硬件看门狗功能。该系统的主要功能包括:过载切机;低压切机;高频切机;系统运行状态接近稳定极限时,若风机出力波动幅度持续较大,切除风电机组;根据系统关键断面潮流的情况实时调整风机出力的上限;依据风电场并网节点母线电压水平,控制风电场无功补偿设备的投切。最后,介绍了风电场并网稳定控制系统在阜新电网的应用。Based on the stability study of grid-connected wind farms,a stability control system based on GPRS is developed to realize its integrative control of power flow and reactive voltage according to the specificity of communication channel.Following communication functions are implemented based on GPRS： data buffering,heart beat message,automatic redialing,data identification,software hardware watchdog.The main system functions are：overload unit rejection,low voltage unit rejection,high frequency unit rejection,unit rejection when power grid approaches the stability margin and the unit output fluctuation is continuously large,real-time unit upper output limit regulation according to the power flow of key interconnection section,reactive power compensation control according to the bus voltage level of grid connection node.Its application in a power grid is introduced.

关 键 词：并网风电 安全稳定控制 GPRS 无功电压综合控制 广域保护控制系统 

分 类 号：TM712[电气工程—电力系统及自动化] TM761