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以蒲石河抽水蓄能电站#4机组5个特征水头下的现场稳定性试验数据为基础,选取水轮机工况下从60 MW到额定负荷间阶梯式的13个负荷工况,分析了每个试验水头下各稳定性指标随着有功功率增大的变化趋势及各个负荷工况下试验水头变化时对各稳定性指标的影响,通过对机架振动、导轴承摆度及水流压力脉动等试验数据进行频谱分析,研究了水流压力脉动对机组振动、摆度的影响。依据主机合同技术规范中的相关要求将#4机组在水轮机工况的运行区域划分为A区(稳定运行区)、B区(限制运行区)、C区(强振禁运区)等3个运行区域,为机组安全运行提供实用性的指导依据。
Based on the field stability test data under 5 characteristic heads of # 4 unit of Pushihe Pumped Storage Power Station, 13 load conditions of stepwise from 60 MW to rated load of turbine are selected, and each test Under the head of the water, the stability index of the water head changes with the increase of the active power and the influence of the test head on the stability indexes under various load conditions. By the test data of rack vibration, guide bearing swing and pressure pulsation The frequency spectrum analysis was conducted to study the influence of pressure pulsation on the vibration and swing of the unit. According to the relevant requirements in the technical specifications of the host contract, the operating conditions of # 4 unit in turbine working conditions are divided into three zones (A zone (stable operation zone), B zone (restricted operation zone) and C zone (strong vibration prohibited zone) Operating area, provide practical guidance for the safe operation of the unit.