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大规模新能源并网下火电机组深度调峰优化调度
作者姓名:于国强  刘克天  胡尊民  刘娜娜  肖新宇
作者单位:江苏方天电力技术有限公司, 江苏 南京 211102;南京工程学院电力工程学院, 江苏 南京 211167
基金项目:国家自然科学基金资助项目(51977103)
摘    要:当前,火电机组亟须进行深度调峰改造来提高电网大规模新能源消纳能力。文中对大规模新能源并网下火电机组深度调峰优化调度进行研究。首先,分析火电机组深度调峰成本,建立火电机组深度调峰的能耗成本、运行补偿收益以及备用容量成本的数学模型;然后,以综合运行成本最低为目标函数,建立考虑火电机组运行约束的深度调峰调度模型,并使用分支定界法求解调度模型;最后,以8台火电机组、1个风电场和1个光伏电站构成测试系统,分别从调峰深度、新能源消纳量、火电企业收益等方面对大规模新能源并网下火电机组深度调峰优化调度进行分析。算例结果表明:在文中所建优化调度模型中,火电机组深度调峰能显著提高新能源消纳量,但火电机组单位发电成本提高,火电机组效益明显下降。在当前深度调峰补偿标准下,火电机组深度调峰效益低于基本调峰。

关 键 词:火电机组  深度调峰  大规模新能源消纳  综合运行成本  调度模型  火电企业收益
收稿时间:2022/8/21 0:00:00
修稿时间:2022/11/9 0:00:00

Optimal scheduling of deep peak regulation for thermal power units in power grid with large-scale new energy
Authors:YU Guoqiang  LIU Ketian  HU Zunmin  LIU Nan  XIAO Xinyu
Affiliation:Jiangsu Frontier Electric Technology Co., Ltd., Nanjing 211102, China;School of Electric Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China
Abstract:Currently,thermal power units need to undergo deep peak regulation transformation to improve the power grid''s ability of large scale new energy consumption. In this paper,the deep peak regulation optimal scheduling of thermal power units under large-scale new energy grid connection is studied. Firstly,the cost of deep peak regulation of thermal units is studied and the different cost mathematical models of deep peak regulation are proposed including energy consumption,operating compensation and spinning reserve capacity. Then,taking the lowest comprehensive operating cost as the objective function,a deep peak regulation scheduling model considering the operating constraints of thermal power units is established,and the branch and bound method is used to solve the scheduling model. Finally,the test system is composed of eight thermal power units,one wind farm and one photovoltaic power station. The deep peak regulation optimal dispatching of thermal power units under large scale new energy grid connection is analyzed from the aspects of peak regulation depth,new energy consumption and thermal power enterprise income. The analysis results show that the new energy consumption of thermal power units can be significantly increased by peak regulation of thermal power units,but the benefit of thermal power units decreases significantly with the further increase of peak regulation depth. Under the current compensation standard of deep peak regulation,the benefit of deep peak regulation of thermal power units is lower than that of basic peak regulation.
Keywords:thermal power units  deep peak regulation  large scale new energy consumption  comprehensive operating cost  scheduling model  benefit of thermal power enterprise
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