摘要
风电机组变流器引起的次/超同步振荡是制约风电大规模消纳的重要因素之一。为确保风电系统的安全稳定运行,风电机组并网前需对其进行次/超同步振荡“适网性”分析,以评估系统发生次/超同步振荡的潜在风险。然而,对于控制结构或关键参数未知的风电机组变流器,难以直接建立详尽的数学模型进行次/超同步振荡分析。为解决上述问题,研制了频率耦合阻抗模型测试仪(impedance model testing instrument,IMTI),借助外部激励响应特性辨识风电机组的频域耦合阻抗模型,基于该模型从次/超同步振荡稳定性角度出发评估风电机组的“适网性”;并借助实时数字仿真器(real-time digital simulator,RTDS)构建控制硬件在环(controller hardware in loop,CHIL)测试平台,对某商用风电机组控制器进行次/超同步振荡风险分析。最后,通过电磁暂态仿真软件PSCAD/EMTDC验证了硬件在环测试结果的正确性。
The wind power converter usually causes sub/super-synchronous oscillation.It is one of the critical issues that restrict the efficient utilization of wind power.Hence,conducting a rigorous wind power converter assessment is necessary before connecting to power grids.The potential risk of sub/super-synchronous oscillation could be detected from this assessment.However,setting up a detailed mathematical model of the wind power converter is challenging because the wind power converter’s structures,parameters,or features may be unknown.Therefore,an impedance model testing instrument(IMTI)was developed to address this issue.The frequency-coupled impedance model of wind power converters based on response characteristics of external excitation was identified by IMTI.This model was used to evaluate the adaptability of wind power converter from the perspective of the stability for the sub/super-synchronous oscillation.A controller hardware-in-loop(CHIL)test platform was built based on the real-time digital simulator(RTDS),which is suitable for the adaptability evaluation of wind power converters.Finally,a converter was assessed by this CHIL test,and the results were verified using PSCAD/EMTDC.
作者
马宁宁
杜维柱
刘朋印
李蕴红
刘威
谢小荣
MA Ningning;DU Weizhu;LIU Pengyin;LI Yunhong;LIU Wei;XIE Xiaorong(State Key Lab of Control and Simulation of Power Systems and Generation Equipment(Department of Electrical Engineering,Tsinghua University),Haidian District,Beijing 100084,China;State Grid Jibei Electric Power Company Limited,Xicheng District,Beijing 100045,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2022年第15期5497-5505,共9页
Proceedings of the CSEE
基金
国家自然科学基金项目(51737007,51925701)
国网冀北电力有限公司科技项目(52018K19002D)
电力系统国家重点实验室资助课题(SKLD21M11)。
关键词
次/超同步振荡
阻抗模型
控制硬件在环测试
阻抗模型测试仪
适网性分析
subsynchronous oscillation
impedance model
controller-hardware-in-loop test
impedance model testing instrument
adaptability analysis
