摘要
随着越来越多的小水电并入电网,电网的拓扑结构由简单变得复杂,由原来的单电源供电变为多电源供电,从而使系统局部节点电压越限问题严重。首先,分别对单一调压措施原理及其敏感度原理进行分析;其次,根据陕南某变电站建立模型,通过在不同节点采取不同单一调压措施进行仿真,进而求取单一调压措施的敏感度矩阵;最后,通过对提出的单一调压措施方案进行仿真和对比分析,结果表明,在一定工程实际情况下,改变小水电发电机组运行方式可有效使节点电压运行在安全范围之内。
With the integration of more and more small hydropower into the power grid,the topology of the power grid has changed from simple to complex,from the original single power supply to multi power supply,which makes the problem of local node voltage exceeding the limit serious.Firstly,the principle of single voltage regulation measure and its sensitivity principle are analyzed.Secondly,according to the model of a substation in southern Shaanxi,different single voltage regulation measures are taken at different nodes for simulation,and then the sensitivity matrix of single voltage regulation measures is obtained.Finally,through the simulation and comparative analysis of the proposed single voltage regulation measures,the results show that changing the operation mode of small hydropower generating units can effectively make the node voltage operate within the safe range under certain engineering practical conditions.
作者
桑兴勇
李颖峰
史腾肖
库城银
Sang Xingyong;Li Yingfeng;Shi Tengxiao;Ku Chengyin(School of Electrical Engineering,Shaanxi University of Technology,Hanzhong,Shaanxi 723000,China)
出处
《黑龙江工业学院学报（综合版）》
2022年第11期98-106,共9页
Journal of Heilongjiang University of Technology(Comprehensive Edition)
基金
陕西省教育厅一般专项科研计划项目(项目编号:21JK0577)。
关键词
小水电
单一调压措施
节点电压
敏感度矩阵
small hydropower
single voltage regulation measures
node voltage
sensitivity matrix
