风电机组电磁暂态建模及验证

风电机组暂态响应特性对新能源基地及近区电网的安全稳定运行影响很大，建立准确的风电机组模型对新能源并网具有重要意义。现有风电机组模型大多采用典型模型，与风电机组实际响应特性有一定差距，不能满足电力系统仿真需求。提出“现场试验—控制硬件在环（control hardware in the loop, CHIL）—动态链接库（dynamic link library, DLL）建模”的风电机组电磁暂态建模方案。构建基于现场可编程门阵列(FPGA)的CHIL仿真平台，并以风电机组暂态特性现场试验为基准，验证CHIL建模的准确性。提出以DLL为核心的“去控制器”数字建模方法，将风电机组的源控制代码封装后接入数字模型，实现风电机组电磁暂态建模，并以CHIL为基准进行校验。通过上述两级时域一致性验证，证明了所提建模方案的可行性和准确性。

Electromagnetic Transient Modelling and Verifying of Wind Turbine Generator

The transient characteristics of wind turbine generator have great influence on the stable operation of renewable energy base and the power grid in the near region, therefore it is of great significance to build accurate wind turbine generator model for large scale renewable energy integration. However, current wind turbine generator model mostly adopt typical model, some differences exist between the model and the real wind turbine generator, dissatisfying the demand of power system simulation. This paper presents a new EMT modeling method of "filed test - control hardware in the loop(CHIL) - dynamic link library(DLL)" for wind turbine generator. CHIL simulation platform based on FPGA is built and the accuracy of CHIL modeling is verified by filed test. Furthermore, a controller-less digital modeling method based on dynamic link library is proposed with the controller code packaged in the digital model, thus, the EMT model of wind turbine generator is realized and the two level time domain consistency verification proves the feasibility and accuracy of this modelling method.