考虑小干扰稳定的海上风电经不控整流直流送出系统控制器参数优化设计  

Optimization design of controller parameters for an offshore wind power DC output system by diode rectifier considering small signal stability

作　　者：金国彬 杨明城 李国庆[1] 辛业春 谢飞[1] 马煜凯 JIN Guobin;YANG Mingcheng;LI Guoqing;XIN Yechun;XIE Fei;MA Yukai(Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology,Ministry of Education,(Northeast Electric Power University),Jilin 132012,China)

机构地区：[1]现代电力系统仿真控制与绿色电能新技术教育部重点实验室(东北电力大学),吉林吉林132012

出　　处：《电力系统保护与控制》2022年第21期65-74,共10页Power System Protection and Control

基　　金：国家重点研发计划项目资助(2021YFB2400900)。

摘　　要：风机并网逆变器及送电系统的稳定性是大规模海上风力发电系统稳定运行的重要保证。提出一种考虑小干扰稳定的海上风电系统控制器参数优化设计方法。首先,利用谐波线性化原理推导了直驱风机并网逆变器、送端采用不控整流器的高压直流(diode-rectifier based HVDC,DR-HVDC)输电系统的序阻抗模型。然后,分析了风场经DR-HVDC并网互联系统的特点,讨论了稳定判据的适用性。进而,从控制器的角度,确定直驱风机并网逆变器控制系统的控制带宽和阻尼比的取值范围。并在此基础上,从系统的角度,综合考虑互联系统的右半平面零极点和控制参数等对阻抗比值的作用。最后,给出直驱风机并网逆变器的控制系统参数优化设计流程。基于Matlab/Simulink建立海上风电经DR-HVDC直流送出系统的时域仿真模型。仿真结果验证了理论分析的正确性和所提方法的有效性。The stability of a wind turbine grid connected inverter and power transmission system is an important component of the stable operation of a large-scale offshore wind power generation system.A method of optimization design of controller parameters for offshore wind power system considering small signal stability is proposed.First,based on the harmonic linearization principle,a sequence impedance model of a direct-drive wind turbine(PMSG)grid-connected inverter and a high voltage direct current(HVDC)transmission system with diode rectifier(DR)is derived.Then,the characteristics of a DR-HVDC interconnected system are analyzed and the applicability of a stability criterion is discussed.The control bandwidth and damping ratio range of the grid-connected inverter control system are determined from the perspective of the controller.From the system point of view,we consider the effect of the right half plane zero-pole and control parameters on the impedance ratio of the interconnected system above.Finally,the parameter optimization design process of the control system for the grid-connected inverter of the PMSG is given.Based on Matlab/Simulink,the time domain simulation model of offshore wind power through the DR-HVDC DC transmission system is established.The simulation results verify the correctness of the theoretical analysis and the effectiveness of the proposed method.

关 键 词：海上风电 不控整流器 阻抗稳定 伯德图 右半平面零极点 参数优化 

分 类 号：P75[天文地球—海洋科学] TM614[电气工程—电力系统及自动化] TM46