一种合环运行方式的潮流计算分析

The analysis of tidal current calculation for a mode of link loop operation

目前石嘴山地区电网110kV变电站大多为一主一备供电方式,实际运行中经常要进行倒负荷操作,需安排瞬间合环运行方式。但在合环状态下可能会出现各种危及电网安全的问题,因此必须进行潮流计算来验证运行方式的合理性。本文以西部热电厂—聚氯乙烯变—石嘴山电厂环路为例,通过潮流计算,详细分析了合环运行方式下的状态,并对是否具备合环条件给出了具体结论。

At present the operating mode of 110kV transformer substation is mostly a main and a standby power supply in Shizuishan local electrical network, when switching load often needs to arrange the operating mode of instantaneous link loop in the actual operation, but under such states may appear various problems to endanger the power network security, so it＇s necessary to calculate tidal current verifying the rationality of the operating mode. The paper takes the example of the ring circuit from West Cogeneration Plant to substation of Polyvinyl-chloride Plant to Shizuishan Power Plant, through tidal current calculation analyzes the condition of power network under the link loop operating mode, puts forward concrete conclusion of link loop.