多风场连锁脱网过程分析与仿真研究  

Analysis and Simulation Research on Cascading Trips of Multiple Wind Farms

作　　者：徐峰达 郭庆来[1] 孙宏斌[1] 张伯明[1] 王彬[1] 李正烁[1] 丁涛[1] 贾琳[2] 许晓菲[2] 

机构地区：[1]电力系统及发电设备控制和仿真国家重点实验室(清华大学电机系),北京市海淀区100084 [2]华北电网有限公司,北京市宣武区100053

出　　处：《电网技术》2014年第6期1425-1431,共7页Power System Technology

基　　金：国家科技支撑计划项目(2013BAA02B01);国家自然科学基金项目(51277105;51321005);国家杰出青年科学基金项目(51025725);北京市青年英才计划(YETP0096)~~

摘　　要：以仿真方式复现脱网事故扩散过程,并分析影响该过程的关键因素,为后续设计风场的无功电压控制策略提供支持。为此建立了包含主网和多个风场内部精细网络模型的两级分布式仿真平台,将风场间耦合关系与风场内多种元件动作特性一同纳入仿真,兼顾场内精细特征和场间相互作用。通过模拟不同控制模式下并联电容、风机、静止无功补偿器等设备动作过程,分析了受控制模式影响的连锁脱网发展过程。仿真结果表明,在集中式并网风电场群中,风场间电气耦合紧密,单个风场有功、无功变化对邻近风场接入点电压影响显著。研究结果进一步验证了实现风场内多种无功设备协调控制的重要性。A simulation based analysis is proposed to find out the most relative factors during the cascading process,which is significant to support the future voltage control schemes for wind integration region.A hierarchical distributed simulation platform is built,which contains both the transmission and wind farms＇ distribution grid.In this way both the coupling among wind farms and the detailed characteristics of device level can be considered.By simulating shunt capacitors,wind turbine generators and static var compensators （SVCs） under different control mode,the different impact to cascading trips process are analyzed.With the simulation,it is found that centralized integrated wind farms are so closed-coupled that variations of active or reactive power in one wind farm would cause great changes of voltages in wind farms nearby.Researching results also indicate that coordination of various reactive power implements is essential to system voltage safety.

关 键 词：风电场 连锁脱网 电压控制 分布式仿真 

分 类 号：TM743[电气工程—电力系统及自动化]