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我国大中型抽水站发展很快,目前已建成大型抽水站200多座,中型抽水站十几万座。这些抽水站的建成运行,给我们提供了许多宝贵的设计经验。一、大、中型抽水站电气主接线形式的分类和有关参数表1、表2就省内外38座大型、14座中型抽水站的电气主接线形式及部分参数进行了分类。由表1可知:一路电源的变电所40座,两路的7座;变电所中设一台主变压器的26座,两台的21座;采用110kV电源的变电所19座,35kV的28座;主变压器高压侧的接线方式有三类:(1)单母线接线;(2)线路——变压器单元接线;(3)桥形(内桥或外桥)接线。
China’s large and medium-sized pumping station developed rapidly, has built more than 200 large-scale pumping stations, medium-sized pumping station more than ten million. The completion of these pumping stations have given us many valuable design experiences. First, large and medium-sized pumping station classification of the main form of electrical wiring and the relevant parameters Table 1, Table 2 on the province inside and outside 38 large, 14 medium-sized pumping station main electrical wiring and some of the parameters were classified. It can be seen from Table 1 that there are 40 power substations of one power supply and 7 power supplies of two power lines. There are 26 main power transformers and 21 power main power stations in the substation, and 19 substations with 110kV power supply and 35kV Of the 28; main transformer high-voltage side of the wiring there are three types: (1) single bus wiring; (2) line - transformer unit wiring; (3) bridge (bridge or bridge) wiring.