黄河沙坡头水利枢纽工程机组过渡过程计算分析

Unit Transition Process Calculation & Analyses for Shapotou Water Control Project on Yellow River

黄河沙坡头水利枢纽位于宁夏电网末端(卫宁地区电网) ,电网容量相对较小,灯泡贯流式机组GD2 值相对较小,因而机组在大、小波动过渡过程时能否在电网中稳定运行,是决定电站是否采用灯泡贯流机组的先决条件。同时,枢纽机组同时甩负荷时对上游河道的涌浪会产生影响,介绍了电站大、小波动计算及各机组的水力干扰情况,同时对上游库区的涌浪进行了模拟计算。

Shapotou Water Control Project on Yellow River is located at the far end of the Ningxia electric network (the Ningxia-Zhongwei network). Since both the network capacity and the GD\+2 value of the bulb run-through turbine units are relatively small, so the stable operation of the unit in either small or large fluctuated transition process becomes the precondition in selection of the bulb run-through turbine unit in this hydropower station. Meanwhile, when the load of the unit is being rejected in this hydropower station, some affects will be caused to the surge wave upstream. In this paper, calculation of both the large and small fluctuation and the hydraulic disturbances resulted to each unit are introduced and the simulation calculation is also carried out to the surge wave in the upstream reservoir area.