| 1000 MW超超临界机组工况定义条件优化探讨 |
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| 引用本文： | 周正道,华志刚,包伟伟,张晓辉,李继宏.1000 MW超超临界机组工况定义条件优化探讨[J].发电设备,2020(3):215-218,222. |
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| 作者姓名： | 周正道 华志刚 包伟伟 张晓辉 李继宏 |
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| 作者单位： | 国家电力投资集团有限公司;国家电投集团中央研究院 |
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| 摘 要： | 以某1000 MW超超临界机组为研究对象,对四大工况定义条件中的夏季背压、补水率、进汽余量、末级叶片长度等影响因素的变化进行了计算和分析,并结合当前情况提出了优化后的定义条件。结果表明:在机组长时间处于部分负荷运行的情况下,通过优化工况定义条件可以有效降低机组的热耗率24 kJ/(kW·h),提高了机组运行的经济性。
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| 关 键 词： | 超超临界机组 夏季背压 补水率 进汽余量 末级叶片 经济性 |
Discussion on Optimization of Operation Parameters for a 1000 MW Ultra Supercritical Unit |
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| Zhou Zhengdao,Hua Zhigang,Bao Weiwei,Zhang Xiaohui,Li Jihong.Discussion on Optimization of Operation Parameters for a 1000 MW Ultra Supercritical Unit[J].Power Equipment,2020(3):215-218,222. |
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| Authors: | Zhou Zhengdao Hua Zhigang Bao Weiwei Zhang Xiaohui Li Jihong |
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| Affiliation: | (State Power Investment Corporation Co., Ltd., Beijing 100033, China;SPIC Central Research Institute, Beijing 102209, China) |
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| Abstract: | Taking a 1000 MW ultra supercritical unit as an object of study,the effects of following operating parameters on the unit economy under four major working conditions were calculated and analyzed,such as the back pressure in summer,the percentage of make-up water,the margin of inlet steam flow and the length of last stage blade,etc.,after which,the parameters were optimized.Results show that after optimization,the heat consumption of the unit could be effectively reduced by 24 kJ/(kW·h)when it runs at partial load for a long time,resulting in improved economy of the unit. |
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| Keywords: | ultra supercritical unit back pressure in summer percentage of make-up water margin of inlet steam flow last stage blade economy |
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