Summary of Operation of #1 Unit After Flexibility Modification in a Power Plant
In order to improve the peak shaving capacity of the unit,increase the peak shaving revenue,and cope with the changes in the spot trading market,the power plant has carried out a flexible transformation of the unit.The transformation mainly includes increasing the temperature monitoring points of the air cooling island,improving the vacuum pumping capacity of Roots vacuum pumps,and replacing the fully closed intermediate discharge butterfly valve.Through the comparative analysis of the operation indexes before and after the transformation,after the flexibility transformation,the unit operates stably during the operation process,the monitoring data of the steam turbine are normal,the peak shaving capacity of the unit is significantly improved,the peak shaving income is significantly increased,the thermoelectric decoupling ability and operation flexibility are greatly improved,and the energy saving effect is more obvious due to the reduction of heat loss.Attention should be paid to the long-term low load operation of the unit,the difficulty of controlling the back pressure and exhaust steam temperature of the low-pressure cylinder increases,and the operational risk should be paid attention to.
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