Dynamic modelling, validation and analysis of coal-fired subcritical power plant

Dynamic modelling, validation and analysis of coal-fired subcritical power plant
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燃煤亚临界电厂动态建模、验证与分析

DOI:
10.1016/j.fuel.2014.06.055
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发表时间:
2014
期刊:
影响因子:
7.4
通讯作者:
Oko E
Oko E
中科院分区:
工程技术1区
文献类型:
--
作者:
Oko E

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燃煤发电厂是全球电力的主要来源。随着环境法规的收紧,需要改进现有或新建燃煤电厂的设计、运营和控制。建模和仿真被认为是实现这一目标的一种经济、安全和可靠的方法。基于第一性原理,利用gPROMS建立了一个500兆瓦的亚临界燃煤电厂的详细动态模型。模型与工厂实际测量数据进行了对比验证,相对误差小于5%。该模型能够较好地预测从70%负荷到满负荷的机组性能。我们的分析表明,通过斜坡实现负载变化比通过阶跃变化引入的过程扰动更少。该模型可用于提供操作员培训和工艺故障排除等。
Coal-fired power plants are the main source of global electricity. As environmental regulations tighten, there is need to improve the design, operation and control of existing or new built coal-fired power plants. Modelling and simulation is identified as an economic, safe and reliable approach to reach this objective. In this study, a detailed dynamic model of a 500 MWe coal-fired subcritical power plant was developed using gPROMS based on first principles. Model validations were performed against actual plant measurements and the relative error was less than 5%. The model is able to predict plant performance reasonably from 70% load level to full load. Our analysis showed that implementing load changes through ramping introduces less process disturbances than step change. The model can be useful for providing operator training and for process troubleshooting among others.
DOI: --
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