在PSASP/UPI环境下的风电场潮流计算

Power Flow Calculation Containing Wind Farm Based on PSASP/UPI

考虑风速的随机性、风力发电机出力的不确定性、尾流效应影响的潮流计算方法进行了研究,使用PSASP的用户接口程序,编写风电场模型的用户程序,使PSASP环境下的潮流计算模块与用户程序模块交替迭代求解,实现了含风力发电机组的潮流计算。将提出的模型接入单机无穷大系统进行潮流计算,验证了程序的有效性及合理性;接入3机9节点系统进行潮流计算,分析比较了风电场加入前后系统的节点潮流变化情况,为风电机组出力不确定情况下的潮流定量计算提供参考。

The power flow calculation method with power system analysis software Package/user program interface（PSASP/UPI） is established,where the randomness of wind speed,the uncertainty of wind power generation,the impact of wake effect are considered.The user program interface（UPI） of wind farm model is composed,and the passed data with load flow（LF） calculation module through the interface are proposed by PSASP.The modules of UP and LF alternating iterative are calculated,thus the power flow calculation considering the wind turbine is implemented.The model proposed in this paper is connected to a single machine infinite bus system to verify the availability and reasonableness of the program.The power flow is calculated using the model connected to 3-machine 9-bus system,and the variation of nodal power flow before and after the connection of wind farms is analyzed and compared.Thus can provide a reference for power flow quantitative calculation under uncertainty of the wind power generation.