大型抽水蓄能机组热工保护设置与应用

Setting and Application of Thermal Protections for Large Pumped-storage Power Units

抽水蓄能电站机组运行工况多且工况转换频繁,热工保护对机组正常运行、避免扩大事故有着举足轻重的作用。对热工保护中的温度保护、压力压差保护、流量保护、液位保护、位移(位置)保护、振动保护、过速保护及水淹厂房等保护做了详细的分析与说明,可供其他抽水蓄能电站进行热工保护设计时借鉴。

Abstract： The. unit of pumped-storage power station will be run in many different conditions and switehed between them frequently The thermal proteetions have important roles on the normil operation of units and the mitigationof accidents. The thermal proteenons, including temperature protection,pressure and pressure differenee protection, liquid levelprotection, displaocment/position protection, vibration protection, over-speed protection and powerhouse flooded protection, are analyzed in detail herein. The,oxperienees-can be as neferences to the design of other pumped-storage power stations.