摘要
为了提升含微电网群主动配电网电压水平,及降低线损,提升自适应调度效果,研究目标级联求解下的含微电网群主动配电网自适应调度方法。含微电网群主动配电网自适应调度分为网损优化无功调度、功率优化有功调度2个环节。网损优化无功调度方法以微电网网损最小为目标,主要优化分布式电源的无功功率、微电网与主动配电网间的无功交互功率。功率优化有功调度方法旨在通过调整分布式电源的有功功率输出、微电网与主动配电网之间的有功功率交换以及从上级电网购买的电能,实现配电网内的功率平衡。文章采用目标级联分析法分析目标函数间的差异,并行求解微电网调度模型与主动配电网调度模型,实现含微电网群主动配电网的自适应调度。测试结果显示,该方法能够提升主动配电网的局部电压水平为0.937 pu,线路损耗功率降低到0.23 MW,并具有较好的收敛性,提升了配电网自适应调度效果。
In order to improve the voltage level of active distribution network with micro-grid group,reduce line loss and improve the effect of adaptive scheduling,the adaptive scheduling method of active distribution network with micro-grid group under target cascade solution is studied.The adaptive dispatching of active distribution network with micro-grid group is divided into two parts:reactive power dispatching with network loss optimization and active power dispatching with power optimization.The reactive power dispatching method of network loss optimization aims at minimizing the network loss of microgrid,and mainly optimizes the reactive power of distributed generation and the reactive interaction power between micro-grid and active distribution network.The power optimization active power scheduling method aims to achieve power balance within the distribution network by adjusting the active power output of distributed power sources,exchanging active power between micro-grid and active distribution network,and purchasing electricity from higher-level power grids.In this paper,the goal cascading analysis method is used to analyze the difference between the objective functions,and the micro-grid scheduling model and the active distribution network scheduling model are solved in parallel to realize the adaptive scheduling of the active distribution network with micro-grid groups.The test results show that this method can improve the local voltage level of active distribution network to 0.937 pu.The line loss power is reduced to 0.23 MW and has good convergence,which improves the adaptive dispatching effect of distribution network.
作者
郭志燊
邱桂华
邝梓佳
GUO Zhishen;QIU Guihua;KUANG Zijia(Foshan Power Supply Bureau of Guangdong Power Grid Company,Foshan 528000,China)
出处
《微型电脑应用》
2024年第7期148-152,共5页
Microcomputer Applications
关键词
目标级联
微电网群
主动配电网
自适应调度
目标函数
交互功率
target cascade
micro-grid group
active distribution network
adaptive scheduling
objective function
interactive power
