摘要
直接空冷高背压供热是适应复杂环境条件,降低火力发电煤耗和减少污染排放的有效途径。该文考虑环境因素对机组供热负荷与冷端释热特性的影响,基于工程方程求解器和Ebsilon平台建立了直接空冷高背压供热机组的冷端传热和供热特性模型,根据外界环境和机组安全性等边界条件分析了机组在不同热负荷和电负荷要求下的弹性运行边界,得到了不同电负荷时的供热系统变工况运行特性;以热网质–量并行调节为基础,通过优化后的空冷岛运行方式,得到了典型工况的冷端能耗特性;以汽轮机背压为特征参数,供电煤耗率为衡量指标,从热电联产整体系统节能角度为直接空冷高背供热机组弹性运行能力评价,机组余热高效利用及全工况优化提供参考。
It is an effective way for the direct air-cooled high pressure heating to reduce the coal rate and pollutant emission. Considering the heat supply demand and cold-end performance, EES （engineering equation solver） and Ebsilon platform were introduced to model the heat transfer characteristics of heating system and air-cooled island for illustrating the heating system in winter. The flexible operation boundary was discussed in quality-volume regulation due to heating load and power load. The optimized operation mode of both heating system and air-cooled system were determined, taking great reference for the collaborative operation optimization of such system.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2017年第19期5655-5664,共10页
Proceedings of the CSEE
基金
国家科技支撑计划项目(2014BAA06B02)
中央高校基本科研业务费专项资金项目(2015MS43
2015XS81)~~
关键词
直接空冷
高背压
供热
弹性运行
质–量并调
优化
direct air-cooled
high back pressure
heatsupply
flexible operation
quality-volume regulation
optimization
