多热源联网供热系统优化运行方案分析
摘要：以东北某多热源联网供热系统为例，对多热源联网供热系统的优化运行方案进行了分析。从节能角度分析，当热负荷小于161.2 MW时，采用350 MW抽凝机组作为主热源供热；当热负荷大于等于161.2 MW时，采用200 MW光轴机组作为主热源供热，且首先采用350 MW抽凝机组作为调峰热源补充供热，其次采用200 MW抽凝机组作为调峰热源补充供热。从电力调峰角度分析，当热负荷小于64 MW时，采用200 MW抽凝机组作为主热源供热；当热负荷为64～69 MW时，采用200 MW光轴机组作为主热源供热；当热负荷继续增大时，应采用200 MW抽凝机组和200 MW光轴机组同时作为主热源供热，且先使200 MW光轴机组以最低电负荷运行，其次使200 MW抽凝机组以最低电负荷运行，采用350 MW抽凝机组作为调峰热源补充供热。
关键词：多热源联网供热优化运行节能电力调峰发电边际效益抽凝机组光轴机组
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Analysis of optimal operation scheme of multi-heat source interconnected heating systems
Abstract: In this paper, taking a multi-heat source interconnected heating system in Northeast China as an example, the optimal operation scheme is analysed. From the perspective of energy saving, when the heating load is less than 161.2 MW, the 350 MW extraction and condensation unit is used as the main heat source for heat supply. When the heating load is greater than or equal to 161.2 MW, the 200 MW optical axis unit is used as the main heat source for heat supply, and the 350 MW extraction and condensation unit is used first as a peak-shaving heat source for supplementary heat supply, followed by a 200 MW extraction and condensation unit as a peak-shaving heat source for supplementary heat supply. From the perspective of power peak regulation, when the heating load is less than 64 MW, the 200 MW extraction and condensation unit is used to supply heat as the main heat source. When the heating load is 64 to 69 MW, the 200 MW optical axis unit is used to supply heat as the main heat source. When the heating load continues to increase, the 200 MW extraction and condensation unit and the 200 MW optical axis unit should be used to supply heat as the main heat source at the same time, and the 200 MW optical axis unit should be operated at the minimum electrical load first, and then the 200 MW extraction and condensation unit should be operated at the minimum electrical load, and the 350 MW extraction and condensation unit should be used as a peak-shaving heat source for supplementary heating.
Keywords: multi-heat source interconnected heating; optimal operation; energy saving; power peak regulation; marginal benefit of power generation; extraction and condensation unit; optical axis unit;
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