张北高电压脱网事故中风电场动态行为分析与仿真  

Analysis and simulation of wind farm dynamic behavior in high-voltage trip-off accident of Zhangbei

作　　者：周红婷[1] 谢欢 吴涛 宋玮[1] 范伟捷[3] 李长宇 夏雪 

机构地区：[1]华北电力大学电气与电子工程学院,河北保定071003 [2]国网冀北电力有限公司电力科学研究院,北京100045 [3]北京送变电公司,北京102401

出　　处：《电力自动化设备》2017年第2期54-60,共7页Electric Power Automation Equipment

摘　　要：基于计及动态无功控制影响的无功-电压灵敏度分析方法,详细分析了张北各风电场内动态无功源所采用的送出线路恒无功、双馈异步风力发电机组(DFIG)及静止无功发生器(SVG)恒无功等多种控制方式在"5.14"高压连锁脱网事故中的动态行为及影响因素,得出了DFIG及SVG采用恒感性无功控制同样会增大风电场母线的无功-电压灵敏度,且增大程度取决于风电场初始容性、感性无功及短路容量比的结论。结合简单系统以及"5.14"事故,在PSS/E中仿真分析不同控制方式及初始状态下的风电场受到电容扰动后对场侧35 kV母线电压的影响,仿真结果进一步验证了所得出结论的合理性。Based on the var-voltage sensitivity analysis with the consideration of dynamic var control,the dynamic behavior of wind farms in ＂5.14＂ high-voltage cascading trip-off accident of Zhangbei and its influencing factors are analyzed in detail for different control modes of in-farm var sources,such as the constant var control of sending line,DFIG（Doubly-Fed Induction Generator） and SVG（Static Var Generator）.It is concluded that,the constant inductive var control of DFIG and SVG may also increase the var-voltage sensitivity of wind farm bus,depending on the initial inductive var,capacitive var and short-circuit capacity ratio of wind farms. According to ＂5.14＂ accident,the influence of capacitor disturbance on farm-side 35 k V bus voltage of a simple system is simulated and analyzed by PSS / E for different control modes and initial states of wind farms and the simulative results verify the rationality of the obtained conclusion.

关 键 词：风电场 动态行为 高压脱网 恒无功控制 无功-电压灵敏度 稳定性 灵敏度分析 

分 类 号：TM614[电气工程—电力系统及自动化]