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600 MW空冷供热机组主蒸汽压力寻优试验
引用本文:王晋权,李俊,吕宏凯. 600 MW空冷供热机组主蒸汽压力寻优试验[J]. 电力技术, 2014, 0(4): 48-51,69
作者姓名:王晋权  李俊  吕宏凯
作者单位:[1]山西格盟安全生产咨询有限公司,山西太原030000 [2]山西兆光发电有限责任公司,山西霍州031400
摘    要:通过对600 MW空冷供热机组不同供热抽汽量、排汽压力的试验,研究了供热抽汽量及排汽压力变化对机组主蒸汽压力的影响规律,并定量计算了不同试验工况下汽轮机热耗率的变化.提出了空冷机组全年高效定滑压运行模型,修正了机组原有的滑压运行控制逻辑.运行结果表明:按修正后定滑压运行曲线运行在450 MW、供热抽汽量300 t/h时,可降低供电煤耗1.1 g/(kW·h).

关 键 词:空冷机组  供热机组  滑压运行  供热抽汽  排汽压力  优化运行

Optimization Tests on Main Steam Pressure for 600-MW Air-Cooling Heat Supply Units
Affiliation:WANG Jin-quan, LI Jun, LU Hong-kai ( 1. Shanxi Gemeng Safety Production Consultation Co. Ltd., Taiyuan 030000, China; 2. Shanxi Zhaoguang Power Generation Co. Ltd., Huozhou 031400, China)
Abstract:The variation of steam extraction volume and exhaust pressure with main steam pressure is studied through the tests on the 600-MW air-cooling heat supply units and the quantitative measurement on the changes of the heat consumption rate under the conditions of different extraction volumes and exhaust pressures is conducted. The year-around efficient fixed and sliding pressure operation model is put forward and the original unit sliding pressure operation logic is modified. The operation results show that a decrease of net coal consumption of 1.1 g/(kW, h) can be obtained when the sliding pressure curve is at the loads of 450 MW and the heating steam extraction is 300 t/h.
Keywords:air-cooling unit  heat supply unit  sliding pressure operation  heating extraction  exhaust pressure  optimal operation
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