摘要
通过对某电厂2台135 MW机组和2台330 MW机组进行高背压与低压缸切缸两种方式的协同改造,在多种供热模式下协同运行,由改造后的性能试验得到4台机组供热期的性能指标,分析得出供热期全厂机组的调峰能力为504.39 MW,比改造前提高了9.39 MW,而且最低电负荷降低了39.27 MW。供热能力增加的同时,调峰能力和低负荷的调度灵活性明显提升。针对电厂4台机组分别带东、西两个供热管网的情况,基于机组的运行特性和能耗指标,优化多种供热模式下的协同运行方式和电、热负荷分配。在全厂热负荷和机组总进汽量不变的条件下,4台机组带电负荷能力增加了25~40 MW。
Through the collaborative transformation of two 135 MW units and two 330 MW units of a power plant with high backpressure and low-pressure cylinder cutting,which operating in multiple heating modes,the performance indexes of four units in the heating period are obtained from the performance test after transformation,and the analysis shows that the peaking capacity of the whole unit in the heating period is 504.39 MW,which is 9.39 MW higher than the one before the transformation,and the minimum load is 39.27 MW lower.While the heating capacity is increased,the peak shifting capacity and the scheduling flexibility of low load are significantly improved.In view of the fact that the four units of the power plant are equipped with two heat supply pipelines in the east and west respectively,based on the operating characteristics and energy consumption indexes of the units,the collaborative operation mode and the distribution of electricity and heat loads under multiple heat supply modes are optimized.Under the condition that the thermal load of the whole plant and the total steam intake of the units remaining unchanged,the capacity of the four units to carry electric load increases by 25~40 MW.
作者
刘光耀
王学栋
LIU Guangyao;WANG Xuedong(Shandong Department of Huadian Electric Power Research Institute Co.,Ltd.,Jinan 250002,China)
出处
《内蒙古电力技术》
2023年第6期50-56,共7页
Inner Mongolia Electric Power
基金
中国华电集团有限公司科研项目“供热机组热电解耦与提升调度灵活性的方案研究”(CHDKJ18-02-86)
关键词
热电联产机组
高背压
低压缸切缸
热电解耦
调峰能力
供热能力
cogeneration units
high back pressure
low pressure cylinder cutting operation
thermoelectric decoupling
peak-regulating capacity
heating capacity
