电机与控制应用2024，Vol.51Issue(2)：10-21,12.DOI:10.12177/emca.2023.185
混合直流系统中基于平波电抗器与限流电抗器参数优化的限流策略
Current Limiting Strategy Based on Parameter Optimization of Smoothing Reactor and Current Limiting Reactor in Hybrid HVDC System
摘要
Abstract
During normal operation of DC lines,the smoothing reactor can reduce current ripple.When a DC line fails,the rapid operation of the current limiting reactor can suppress the rising speed of the fault current.Therefore,considering the collaboration between current limiting reactors and smoothing reactors can not only suppress the rising speed of fault current,but also reduce the cutting capacity of DC circuit breakers.However,due to investment costs and system dynamic characteristics,the inductance capacity of smoothing reactors and current limiting reactors needs to be maintained within a reasonable range.Therefore,it is very meaningful to optimize the capacity configuration of smoothing reactors and current limiting reactors in the HVDC transmission system,while ensuring the current limiting capacity and reducing investment.Firstly,a fault equivalent model for the AC/DC hybrid power grid is established and the characteristics of the fault current at both ends when a bipolar short circuit occurs in the DC line are analyzed.Secondly,a mathematical model for optimizing the configuration of smoothing reactors and current limiting reactors is established.Finally,the proposed current limiting strategy is validated through MATLAB simulation experiments.关键词
混合直流输电/平波电抗器/限流电抗器/参数优化/短路电流Key words
hybrid HVDC transmission/smoothing reactor/current limiting reactor/parameter optimization/short circuit current分类
信息技术与安全科学引用本文复制引用
李涛,胡迪,杨为,祝雨晨,刘宏达,陈忠,官玮平,祝琳..混合直流系统中基于平波电抗器与限流电抗器参数优化的限流策略[J].电机与控制应用,2024,51(2):10-21,12.基金项目
国家电网有限公司总部管理科技项目(5500-202220110A-1-1-ZN) （5500-202220110A-1-1-ZN）
国家自然科学基金委员会-国家电网公司智能电网联合基金资助项目(U2066210)Science and Technology Project of Headquarters of SGCC(5500-202220110A-1-1-ZN) （U2066210）
National Natural Science Foundation of China-State Grid Joint Fund for Smart Grid(U2066210) （U2066210）
