摘要
凝结水泵经常运行在低负荷工况下,能量损失大。为实现节能降耗,广东惠州天然气发电有限公司对3台联合循环机组进行凝结水泵变频节能改造,自行设计了凝结水泵的变频控制逻辑,在机组高负荷下调节低压汽包水位,实现了凝结水泵全过程自动控制。根据机组调峰特性进行了凝结水泵能耗分段计算分析,得出每台机组平均每日可节约电能约6MWh,节电率达53%,节能收益可观,说明所设计的变频控制逻辑的合理性和适用性,达到了节能改造的目标。
When operating under working condition of low load, the condensate pump is often losing great energy. For reali- zing energy saving and consumption reduction, frequency conversion and energy saving reforms are proceeded in Guangdong Huizhou LNG Power Co., Ltd.. This paper introduces design of frequency conversion control logic of the condensate pump which is able to adjust low pressure steam pocket water level with high load of the unit and realize overall-process automatic control of the condensate pump. According to pitch peak characteristics of the unit, it analyzes energy consumption section calculation of the condensate pump and draws conclusions that it is able to save electric energy 6 MWh a day for the unit with about 53% power saving ratio and considerable energy saving profits. It declares reasonability and applicability of the de- signed frequency conversion control logic which may realize energy saving reform.
出处
《广东电力》
2013年第10期98-101,115,共5页
Guangdong Electric Power
关键词
变频
凝结水泵
汽包水位
控制逻辑
frequency conversion
condensate pump
steam pocket water level
control logic
