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沈家水电站二号机自并网发电后,发生剧烈振动,为了避开振动区,只能在额定出力55％以下工况运行,造成经济损失。我们通过反复检查,找出了振动原因,采用在尾水管中加设肋板的办法消除了振动,使机组达到设计出力,提高了经济效益。电站装机容量2×250千瓦;水轮机型号HL110—WJ—42;发电机型号TSWN74/56—6;设计水头70米;单机引用流量0.52秒立米;吸出高度2.5米。为并入华东电网的迳流式水电站。
After the grid-connected power generation of No.2 unit of Shenjia hydropower station, violent vibration occurs. In order to avoid the vibration zone, it can only operate under the condition of 55% rated output and cause economic loss. After repeated inspections, we found out the causes of vibration and eliminated the vibration through the addition of ribs in the draft tube, which enabled the unit to achieve the designed output and increased the economic benefits. Power plant installed capacity of 2 × 250 kW; turbine model HL110-WJ-42; generator model TSWN74 / 56-6; design head 70 meters; stand-alone reference flow of 0.52 seconds; suction height of 2.5 meters. For the merger into the East China Power Chuanli Hydropower Station.