摘要
以循环冷却水系统整体作为研究对象,基于循泵优化运行模型,并充分考虑气象条件变化对循泵优化运行的影响,绘制出可直接根据气象条件指导循泵优化运行的一种新型等效益曲线及相应的净收益功率曲线.以某电厂660MW机组为例,将新型等效益曲线与现有等效益曲线进行对比应用分析.结果表明:在循环冷却水系统中,根据现有等效益曲线查取的循泵运行方式并不总是"最优"的,甚至在相同的机组负荷、气象条件下,仅因当前工况循泵运行方式的不同,所查取的最优循泵运行方式也可能不同,但是新型等效益曲线始终能够合理地指导循泵优化运行.同时,利用新型等效益曲线及净收益功率曲线对660MW机组的循泵优化运行进行了技术和经济研究分析.通过对比不同机组负荷下的净收益功率曲线发现:在夏季高温情况下,循环冷却水系统在机组低负荷下的运行费用有可能高于在机组高负荷下的运行费用.
Based on the circulating water pump（CWP） optimal operation model,with the whole circulating cooling water system as the subject,taking influences of different weather conditions fully on CWP optimal operation into consideration,a new kind of equivalent profit curve and corresponding net earning power curve was drawn to directly guide CWP optimal operation.Taking a 660 MW power plant for example,the proposed and previous equivalent profit curves were compared and analyzed.The results show that,the proposed equivalent profit curves can always effectively guide the CWP optimal ope-ration.However,the CWP operation mode based on the existing equivalent profit curves is not always optimal,and the CWP optimal operation mode possibly changes due to the working CWP operation modes.In the meantime,by applying the proposed equivalent profit curves and net earning power curves,the CWP optimal operation in the 660 MW power plant was technically and economically analyzed.By comparing net earning power curves under different loads,it is found that,under summertime high temperature conditions,the operation cost of circulating cooling water system under low load may be higher than that under high load.
出处
《排灌机械工程学报》
EI
北大核心
2013年第6期490-495,共6页
Journal of Drainage and Irrigation Machinery Engineering
基金
国家自然科学基金资助项目(50979029
51209073)
关键词
火电厂
循泵优化运行
气象条件
净收益功率
循环冷却水系统
thermal power plant
circulating water pump optimal operation
weather condition
net earning power
circulating cooling water system
