含水电集群电网事故方式下电压过高分析及处置方法  

Analysis and Treatment of High Voltage in Hydropower Cluster Grid under Accident Mode

作　　者：祝欢欢 潘轩 李斌 ZHU Huanhuan;PAN Xuan;LI Bin(State Grid Loudi Power Supply Company,Loudi 417000,China)

机构地区：[1]国网娄底供电公司,湖南娄底417000

出　　处：《安徽电气工程职业技术学院学报》2024年第3期1-5,共5页Journal of Anhui Electrical Engineering Professional Technique College

摘　　要：电网故障后运行方式的改变,易导致部分区域电压不合格,尤其是在小水电集群并网处严重影响着供电质量和电网安全。文章以某线路故障后小水电并网区域电压过高事件为背景,利用传输线路压差公式及其推导思维分析该事件电压异常的本质原因,从而确定了处置思路和方法,进而考虑短期实际调度运行需要,提出了小水电有功精细化控制方案。考虑长期电网规划需要,提出了无功装置配置方案,并应用PSASP仿真模型对所提方案进行计算和验证。文章针对性分析了该事件电压异常原因,提出的短期和长期方案有良好效果,具有一定的实际工程应用参考价值。Changing the operation mode after a power grid fault can easily lead to unqualified voltage in some regions,especially at the grid connection of small hydropower clusters,which seriously affects the quality of power supply and the safety of the power grid.Taking an event of high voltage in the grid connection area of a small hydropower station after a line fault as the background,this paper uses the transmission line voltage difference formula and its derivation thinking to analyze the essential causes of the abnormal voltage in this event,so as to determine the handling ideas and methods;it then considers the short-term actual adjustment and operation needs and proposes a refined control scheme for the active power of small hydropower stations.Considering the needs of long-term power grid planning,a reactive power device configuration scheme is proposed,and the proposed scheme is calculated and validated using a PSASP simulation model.The paper specifically reveals the causes of abnormal voltage in this event,and the proposed short-term and long-term plans have good results,which have certain reference value for practical engineering application.

关 键 词：电压异常 小水电集群 无功配置 

分 类 号：TM715[电气工程—电力系统及自动化]