通过绕道蒸汽蓄积器提高燃煤发电厂的功率坡道速度
Hongyu Ding1, Sibian Ding1, Qingxiong Tan1
1School of Energy and Power Enginnering, Huazhong university of science and technology, 430074 Wuhan, China.
Heliyon
|June 24, 2024
概括
本研究引入了一种蒸汽积累系统,以提高燃煤发电厂 (CFPP) 的负载坡道速度. 新系统增强了CFPP的灵活性,可以在没有重大控制修订的情况下整合可再生能源.
科学领域:
- 电力系统工程 电力系统工程
- 整合可再生能源的整合
- 热电厂运行 热电厂运行 热电厂运行
背景情况:
- 越来越多的可再生能源需要更大的电网灵活性.
- 燃煤发电厂 (CFPP) 需要提高运营灵活性,以支持电网稳定性.
- 目前关于CFPP灵活性的研究主要集中在峰值剃须深度上,忽视了负载坡速率.
研究的目的:
- 建议和评估一个蒸汽蓄积器储存系统,以提高CFPP的负载率.
- 解决CFPP灵活性的局限性,特别是在低负载条件下.
- 为了提高CFPPs对电源道命令的响应速度.
主要方法:
- 为拟议的蒸汽蓄电系统开发和验证稳态和动态模型.
- 蒸汽积累器与轮的绕道系统的集成.
- 模拟充电和放电周期以评估性能.
主要成果:
- 拟议的系统允许负载变化为+2.13%的Pe和-8.3%的Pe,功率效率为63.6%在40%的THA.
- 该装置的负载增长率提高了1.5% Pe/min,达到3% Pe/min.
- 在没有修改原始控制的情况下,负载下降率至少达到5% Pe/min.
结论:
- 蒸汽积累器系统提供了一种高效而简单的解决方案,用于提高CFPP负载坡速率.
- 该技术增强了CFPP的灵活性,这对于整合高挥发性可再生能源至关重要.
- 该系统易于实施和有效,特别适用于低负载运行的CFPP.
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