摘要
为提高交直流混联系统故障恢复的高效性以及可靠性。针对风光等分布式电源以及负荷存在的随机性问题,考虑VSC在交直流混联系统故障恢复时发挥的作用,构建含风光储联合系统和考虑到需求响应的可控负荷的交直流混联配电网模型。故障发生后首先通过改变VSC控制方式利用联合系统出力形成孤岛对重要负荷进行恢复。然后运用引入扰动因子以及混沌映射的二进制蚁狮优化算法得到考虑到VSC控制方式、风光不确定性以及负荷需求响应的综合恢复策略。最后对49节点的交直流混联配电网进行仿真分析。仿真结果表明,所提策略可快速得到不同时刻下交直流混联配电网的故障恢复方案,在保障重要负荷不断电的基础上恢复尽量多的负荷,与其他方案对比验证了所提恢复策略的优越性。
In this paper,we aim to improve the efficiency and reliability of fault recovery in AC/DC hybrid systems.Considering the stochastic nature of distributed power sources such as wind and photovoltaic and loads,as well as the role of VSC in AC/DC hybrid system fault recovery,an AC/DC hybrid distribution network model is constructed.This model incorporates a combined system of wind,photovoltaic and storage,along with controllable loads that consider demand response.After the occurrence of a fault,the important load is first restored by changing the VSC control mode and utilizing the joint system output to form an island.Then,a binary ant lion optimization algorithm incorporating disturbance factors and chaotic mapping is employed to obtain a comprehensive recovery strategy that takes into account the VSC control method and the uncertainties associated with wind,photovoltaic,and load demand response.Finally,a 49-node AC/DC hybrid distribution network is selected for case study.The simulation results indicate that the proposed strategy enables rapid acquisition of fault recovery plans for AC/DC hybrid distribution networks at different moments,verifying the superiority of the proposed recovery strategy.
作者
刘青
朱维佳
马天祥
LIU Qing;ZHU Weijia;MA Tianxiang(State Key Laboratary for Alternate Electrical Power System with Renewable Energy Sourcrs(North China Electric Power University),Baoding 071003,Hebei Province,China;State Grid Hebei Electric Power Research Institute,Shijiazhuang 050021,Hebei Province,China)
出处
《现代电力》
北大核心
2025年第4期754-764,I0008,共12页
Modern Electric Power
基金
国家电网有限公司科技项目(KJ2021-003)。
关键词
交直流混合配电网
故障恢复
孤岛划分
分布式储能
电压源型换流器
AC/DC hybrid distribution network
fault recovery
island partition
distributed energy storage
voltage source converter.
