基于RTDS的直驱型风机变流器控制系统闭环试验平台设计

Design of Closed-loop Test Platform for Direct-drive Wind Generation Converter Control System on RTDS

为了深入研究直驱型风力发电机组电气特性,采用实时数字仿真器(RTDS)与风机变流器控制系统结合的形式,建立了基于RTDS的某型号直驱型风力发电机组实际变流器控制系统闭环试验平台。阐述了试验平台设备连接及信号交换方式、数字模型的建立方法,设计了风力发电机的并网模拟、风速变化、低电压过渡能力验证、系统频率偏移、风力机功率调节、风力机运行方式调节等试验项目,并对试验结果进行分析。试验结果表明,所建立的直驱型风机变流器控制系统闭环试验平台能够对风机电气控制性能进行全面测试,仿真结果与直驱型风机实际运行规律相吻合。

To study electrical characteristics of direct-drive wind turbine deeply,the author designed the closed-loop test platform for direct-drive wind generation converter control system with the combination of RTDS and actual control system of converter.The platform was discussed in detail,including system connection mode,test model,test items such as cutting-in process simulation of wind generation,change of wind speed,verification of the low voltage ride through capability,system frequence deviation,power and operation mode regulation of wind generation,etc.The test results show that the established test platform is able to complete multi-type test and simulation results are consistent with the actual situation.