风剪切和塔影效应作用下直驱式风电并网系统虚拟惯量控制  

Direct-drive wind power integrated system with virtual inertia control considering wind shear and tower shadow effect

作　　者：武晓冬[1,2] 田慕琴 朱燕芳[3] 赵巧娥 刘芳 WU Xiaodong;TIAN Muqin;ZHU Yanfang;ZHAO Qiaoe;LIU Fang(Key Laboratory of Mining Electrical Equipment and Intelligent Control,Taiyuan University of Technology,Taiyuan 030024,China;Department of Electric Power Engineering,Shanxi University,Taiyuan 030006,China;State Grid Shanxi Electric Power Company,Taiyuan 030001,China)

机构地区：[1]太原理工大学煤矿电气设备与智能控制山西省重点实验室,山西太原030024 [2]山西大学电力工程系,山西太原030006 [3]国网山西电力公司调控中心,山西太原030001

出　　处：《电力系统保护与控制》2018年第18期93-99,共7页Power System Protection and Control

基　　金：国家自然科学基金项目资助(U1510112);煤矿电气设备与智能控制山西省重点实验室(太原理工大学)开放基金资助项目(MEI2015-5)~~

摘　　要：风剪切和塔影效应使直驱式风电机组成为强迫功率振荡扰动源,虚拟惯量控制可使风电机组同时具备向系统提供惯量支持和抑制扰动的能力。通过分析虚拟惯量控制中比例-微分环节对系统阻尼、风机轴系扭振和扰动源的影响,提出了虚拟惯量控制的改进方案。在VIC补偿量中引入风机输出功率给定量和二阶带通滤波器,实现了比例、微分系数的等效等比增大。算例分析和仿真结果表明,改进方案在不减少系统阻尼和不降低轴系稳定性的前提下,提高了虚拟惯量控制对强迫功率振荡扰动抑制的能力。Wind shear and tower shadow effect make direct drive wind power become forced power oscillation disturbance sources,and virtual inertia control makes wind power have the capacities of both the inertia support for the grid and the disturbance suppression.This paper presents an improved virtual inertia control though analyzing the system damping,the torsional vibration and the disturbance source affected by the proportional differentiation coefficients.The proportional differentiation coefficients are enlarged equivalently and simultaneously through adding the reference value of the wind power output and a two-order band pass filter in compensation value of virtual inertia control.The results of analysis and simulation in the example show that the disturbance suppression capacity of virtual inertia control is enhanced on the premise of not decreasing the system damping and the torsional stability.

关 键 词：虚拟惯量控制 强迫功率振荡 系统阻尼 轴系扭振 带通滤波器 

分 类 号：TM315[电气工程—电机]