摘要
由于电源的波动性使得配电网故障恢复需要考虑更多的不确定因素,因此提出了一种考虑分布式电源出力不确定性的故障恢复方法。首先,基于仿射理论对分布式电源出力不确定量进行分析,并建立了以失电负荷恢复量最大为目标函数、以系统运行可靠性为约束条件的配电网故障恢复模型;其次,根据分段线性逼近思想将原二次项约束转化为线性可解形式,同时采用分解算法将转化后的故障恢复模型进行迭代求解;最后,通过算例仿真测试结果表明,所提故障恢复方法在分布式电源波动恶劣场景下能够恢复更多的失电负荷,具有较高的工程应用价值。
Due to the volatility of power supply,more uncertain factors need to be considered in the recovery of distribution network failures.Therefore,this paper proposed a fault recovery method that considers the uncertainty of distributed power output.First,based on the affine theory,the uncertainty of distributed power output is analyzed,and a distribution network fault recovery model with the maximum loss of load recovery as the objective function and system operation reliability as the constraint is established.Secondly,according to the piecewise linear approximation idea the original quadratic constraint is converted into a linear solvable form,and at the same time,a decomposition algorithm is used to iteratively solve the converted fault recovery model.Finally,the simulation test results of a numerical example show that the proposed fault recovery method can recover more power-loss loads under severe scenarios of power fluctuations,which has high engineering application value.
作者
冯义
晋斌
陈娜
张辉
FENG Yi;JIN Bin;CHEN Na;ZHANG Hui(Guiyang Power Supply Bureau of Guizhou Power Grid Co.,Ltd.,Guiyang 550001,China;Guodian Nanrui Technology Co.,Ltd.,Nanjing 211106,China)
出处
《电器与能效管理技术》
2021年第12期78-84,共7页
Electrical & Energy Management Technology
基金
贵阳供电局科技项目(060100KK52200003)。
关键词
配电网
分布式电源
失电负荷
故障恢复
分解算法
distribution networks
distributed generators
power-loss load
fault restoration
decomposition algorithm
