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基于直流保护的直驱风电机组低电压穿越特性分析
引用本文:艾斯卡尔,朱永利,唐彬伟,乔元.基于直流保护的直驱风电机组低电压穿越特性分析[J].低压电器,2013(5):33-37,57.
作者姓名:艾斯卡尔  朱永利  唐彬伟  乔元
作者单位:1. 华北电力大学电气与电子工程学院,河北保定071003;新疆金风科技股份有限公司,新疆乌鲁木齐830026
2. 华北电力大学电气与电子工程学院,河北保定,071003
3. 新疆金风科技股份有限公司,新疆乌鲁木齐,830026
摘    要:研究了基于加装和未加装直流保护的直驱风电机组在电网故障状态下的低电压穿越运行特性。根据GB/T19963--2011对风电机组低电压穿越能力的技术要求,结合直驱风电机组工作原理,构造了直驱风电机组在PSCAD/EMTDC环境下的系统控制模型。以电网三相对称短路故障为案例,对加装和未加装直流保护的直驱风电机组的低电压穿越特性进行了分析和比较。仿真结果不仅证明了所用系统模型是合理的,控制策略是有效可行的,而且还表明加装直流保护的直驱风电机组具备较为优越的低电压穿越特性。

关 键 词:风力发电  直驱风机  永磁同步发电机  直流侧保护  低电压穿越

Analysis for Low Voltage Ride Through Characteristics of Direct-Driven Wind Turbine System with DC-Link Protection
Aisikaer , ZHU Yongli , TANG Binwei , QIAO Yuan.Analysis for Low Voltage Ride Through Characteristics of Direct-Driven Wind Turbine System with DC-Link Protection[J].Low Voltage Apparatus,2013(5):33-37,57.
Authors:Aisikaer  ZHU Yongli  TANG Binwei  QIAO Yuan
Affiliation:1. School of Electrical & Electronic Engineering, North China Electric Power University, Baoding 071003, China; 2. Xinjiang Goldwind Science & Technology Co. ,Ltd. , Urumqi 830026, China)
Abstract:This paper studied the low voltage ride through (LVRT) characteristics of direct-driven wind turbines with or without DC-Link protection circuit during network faults. Based on GB/T 19963--2011 ,the control system model was constructed by using PSCAD/EMTDC software tools based on the primary circuit topology and main principle of direct-driven wind turbines. Finally, observation has been taken for the LVRT operating characteristics of direct-driven wind turbines with or without DC-Link protection circuit during symmetrical short- circuit faults of network. The simulation results show that the models and control methods are correct and valid, and direct-driven wind turbines have an important and predominant LVRT capability if it is equipped with DC-Link protection circuit.
Keywords:wind power  direct-driven wind turbines  permanent magnet synchronous generator  DC-Link protection  low voltage ride through ( LVRT )
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