基于拓展禁区判据的光伏接入牵引供电系统低频稳定性分析  

Low-frequency Stability Analysis of Photovoltaic Connected Traction Power Supply System Based on Extended Forbidden Region-based Criterion

作　　者：赵霞[1] 谢子昀 王英 陈小强[1,2] 辛月阳 母秀清 ZHAO Xia;XIE Ziyun;WANG Ying;CHEN Xiaoqiang;XIN Yueyang;MU Xiuqing(School of Automation&Electrical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;Key Laboratory of Opto-Electronic Technology and Intelligent Control Ministry of Education,Lanzhou Jiaotong University,Lanzhou 730070,China)

机构地区：[1]兰州交通大学自动化与电气工程学院,兰州730070 [2]兰州交通大学光电技术与智能控制教育部重点实验室,兰州730070

出　　处：《高电压技术》2023年第5期1997-2007,共11页High Voltage Engineering

基　　金：国家自然科学基金(52067013,51867012);甘肃省科技厅自然科学重点基金(21JR7RA280);兰州交通大学天佑创新团队(TY202010);甘肃省自然科学基金(22JR11RA162)。

摘　　要：在“双碳”愿景下,光伏通过铁路功率调节器接入牵引供电系统具有良好的发展前景,但光伏接入会对系统的低频稳定性产生影响。针对这一问题,首先建立了光伏-车-网耦合系统小信号阻抗模型,得到了该系统的回比矩阵;然后针对禁区判据进行拓展,提出了拓展禁区判据并给出了判据形式;最后利用拓展禁区判据分析了铁路功率调节器控制器参数等系统参数对低频稳定性的影响,并搭建MATLAB/Simulink测试模型和StarSim半实物实验平台进行了验证。结果表明,与禁区判据相比,拓展禁区判据能更准确地判断光伏-车-网耦合系统低频稳定状态,降低了一定的保守性。Under the vision of carbon peaking and carbon neutrality,photovoltaic connected to traction power supply system through railway power conditioner has a good development prospect,whereas,the integration of photovoltaic will affect the low-frequency stability of the system.This paper aims at studying low-frequency stability of photovoltaic connected to traction power supply system.Firstly,the small signal impedance model of photovoltaic-vehicle-network coupling system is established,and the return ratio matrix of the system is obtained.Then,by improving the forbidden region-based criterion,the extended forbidden region-based criterion is proposed and the criterion expression is given.Finally,by using the extended forbidden region-based criterion,the influences of system parameters such as railway power regulator controller parameters on low-frequency stability are analyzed,and the MATLAB/Simulink test model and StarSim hardware in the loop experimental platform are built for verification.The results show that,compared with the forbidden region-based criterion,the extended forbidden region-based criterion can more accurately judge the low-frequency stable state of photovoltaic vehicle network coupling system and reduce a certain degree of conservatism.

关 键 词：光伏-车-网耦合系统 铁路功率调节器 光伏并网 拓展禁区判据 低频稳定性 StarSim 

分 类 号：TM615[电气工程—电力系统及自动化] U223.6[交通运输工程—道路与铁道工程]