330 MW纯凝机组多汽源供热经济性分析及控制策略

Economic Analysis and Control Strategy for Multiple Steam Source Heating of 330 MW Pure Condensing Unit

为解决机组负荷低时导致供热能力不足或蒸汽品质不达标等问题,通过对再热冷段、再热热段以及主蒸汽三种抽汽供汽方式开展相关理论计算,分析出三种抽汽供热方式对机组热经济性的影响,制定不同负荷、不同供热流量等工况的多汽源协同供汽经济运行策略,实现热电负荷解耦,多汽源大流量协同备用、协同供汽的目标。

To handle heating deficiency or poor steam quality during low load of the unit,theoretical calculations on cold reheated steam,hot reheated steam and main steam are conducted to analyze their impact on thermal economy.An economic operation strategy for coordinated multiple steam source under different loads and heat supply flows is laid out to achieve heating load and power load decoupling as well as coordinated multiple steam source and large-flow backup and steam supply.