基于轨迹灵敏度的风电并网系统短路电流控制参数寻优方法  

Parameter optimization method for short-circuit current control in wind power grid connection system based on trajectory sensitivity

作　　者：林威 方宇迪 林毅 王潇 Lin Wei;Fang Yudi;Lin Yi;Wang Xiao(State Grid Fujian Economic Research Institute,Fuzhou 350013,China;College of Automation&College of Artificial Intelligence,Nanjing University of Posts and Telecommunications,Nanjing 210023,China)

机构地区：[1]国网福建省电力有限公司经济技术研究院,福建福州350013 [2]南京邮电大学自动化学院、人工智能学院,江苏南京210023

出　　处：《可再生能源》2025年第1期134-142,共9页Renewable Energy Resources

基　　金：国网福建经研院专项项目(B3130N230015)。

摘　　要：直驱风力发电机(PMSG)由于其优越性成为主流机型并广泛应用于电网,但由于缺乏量化分析方法,难以评估其控制参数对短路电流特性的影响。文章通过PMSG有功电流和无功电流计算方法,经派克变换得到三相短路电流的解析表达式,并基于轨迹灵敏度方法,从发电机参数、电压跌落系数和PI参数3个方面量化分析不同控制参数对短路电流的影响机理,筛选出灵敏度较大的参数作为主导参数,构建优化目标函数,对PMSG短路电流的主导控制参数进行寻优。最后在PSCAD平台上建立PMSG电磁暂态仿真模型,仿真验证分析PMSG的短路电流特性以及控制参数寻优效果。研究结果表明,轨迹灵敏度分析法可以量化分析控制参数对短路电流特性的影响,可为实际工程的参数整定提供指导。Direct drive wind turbine(PMSG)has become the mainstream model and is widely used in power grid because of its superiority,but it is difficult to evaluate the influence of its control parameters on short-circuit current characteristics due to the lack of quantitative analysis methods.Therefore,the analytic expression of three-phase short-circuit current is obtained by the calculation method of PMSG active current and reactive current through Parker transformation.Based on the trajectory sensitivity method,the influence mechanism of different control parameters on short-circuit current is quantitatively analyzed from three aspects of generator parameters,voltage drop coefficient and PI parameter,and the parameter with greater sensitivity is selected as the leading parameter.The optimization objective function is constructed to optimize the main control parameters of PMSG short circuit current.Finally,the electromagnetic transient simulation model of PMSG was established on the PSCAD platform to verify and analyze the short-circuit current characteristics of PMSG and the optimization effect of control parameters.The research results show that the trajectory sensitivity analysis method can quantify the influence of control parameters on short-circuit current characteristics,and can provide guidance for parameter tuning in practical engineering.

关 键 词：直驱风机 轨迹灵敏度 量化分析 短路电流特性 控制参数寻优 

分 类 号：TK81[动力工程及工程热物理—流体机械及工程]