基于低电压过渡控制策略的光伏系统三相稳态短路电流等值计算模型构建  

Equivalent Calculation Model of Three-Phase Steady-State Short-Circuit Current of Photovoltaic System Based on Low Voltage Transition Control Strategy

作　　者：原帅[1,2] 奥淇仑 石静 刘宇 苗丽芳 苏珂 YUAN Shuai;Aoqilun;SHI Jing;LIU Yu;MIAO Lifang;SU Ke(Inner Mongolia Power Research Institute,Hohhot 010020,China;Inner Mongolia Enterprise Key Laboratory of Smart Grid Simulation of Electrical Power System,Hohhot 010020,China)

机构地区：[1]内蒙古电力科学研究院,呼和浩特010020 [2]内蒙古自治区电力系统智能化电网仿真企业重点实验室,呼和浩特010020

出　　处：《内蒙古电力技术》2022年第1期38-43,共6页Inner Mongolia Electric Power

基　　金：内蒙古电力科学研究院青年科技人员支持项目“典型光伏系统集中接入电网短路电流特性研究”(2020-QK-01)。

摘　　要：针对当前电网短路电流计算分析中忽略了光伏系统的问题,基于光伏系统低电压过渡控制策略,研究了光伏系统三相稳态短路电流的特点,提出光伏系统三相短路电流计算模型并进行试验验证。结果表明,光伏系统短路电流模型与实际系统短路特性一致,验证了模型的正确性和有效性。研究结果和模型可用于开展光伏汇集区短路电流计算分析。In view of the problem that photovoltaic system is ignored in the calculation and analysis of short-circuit current in power grid, this paper studies the characteristics of three-phase steady-state short-circuit current of photovoltaic system based on low voltage ride through control strategy of photovoltaic system. A calculation model of three-phase short-circuit current of photovoltaic system is proposed and verified with experimental tests. As a result, the short-circuit current model proposed in this paper is consistent with the real short-circuit characteristics, which verifies the correctness and effectiveness of the model. The research results and the model can be used to calculate and analyze the short-circuit current in photovoltaic convergence area.

关 键 词：光伏系统 三相稳态短路电流 低电压过渡 控制策略 

分 类 号：TM615[电气工程—电力系统及自动化] TM713