含电转气的微型能源网日前经济优化调度策略

doi:10.19595/j.cnki.1000-6753.tces.191518

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摘要含多种能源转换设备的微型能源网,可通过不同能源间的相互转换,提高可再生能源就地消纳率。为此,该文提出一种含电转气(P2G)的微型能源网日前优化调度策略。首先,在研究电转气及气储能设备参与微型能源网调度的基础上,揭示其对微型能源网经济运行和可再生能源消纳的影响机理;其次,在分析微燃机与P2G电气耦合机理基础上,以能源集线器的方式建立电、气、热、冷联供的微型能源网模型,并通过能量转换矩阵揭示能量供给、转换和消耗三者之间的关系;然后,在考虑P2G收益的基础上,建立以微型能源网运行成本最小为目标的日前最优经济调度模型;最后,以设立对照的方式做进一步验证。结果表明,所提策略对系统运行成本及可再生能源消纳均起到了积极的作用。

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	刘志坚
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关键词 ：可再生能源消纳, 电转气, 能源集线器, 微型能源网, 日前最优经济调度

Abstract：The micro energy-grid with multiple energy conversion equipment could improve the local accommodation rate of renewable energy resources by mutual conversion between different energy sources. In view of that, this paper proposed a day-ahead optimized scheduling strategy for micro energy grid that containing Power to Gas (P2G). Firstly, based on the research of micro energy-grid dispatching with P2G and gas-storage equipment, the influence mechanism it imposes on the grid economic operation and renewable energy accommodation was revealed. Then, the electrical coupling mechanism between micro turbine and P2G was studied, and a micro energy-grid model that combines electricity, gas, heat and cold power together was established by means of energy hub. Based on this model, the relationship between energy supply, conversion, and consumption was investigated through energy conversion matrix. Finally, by considering the benefits of P2G, a day-ahead optimal scheduling model with the goal of minimizing total operation cost was established and verified by establishing a comparison method. Simulation results demonstrate that proposed strategy plays a positive role in both system operating cost reduction and renewable energy accommodation enhancement.

Key words： Renewable energy accommodation power to gas energy hub micro energy-grid day-ahead optimal economic dispatching strategy

收稿日期: 2019-11-20

PACS:

TM73

基金资助:云南省人培基金资助项目(KKSY201904013)

通讯作者: 梁宁男,1985年生,博士,研究方向为电力系统运行与优化。E-mail:Liangning@whu.edu.cn

作者简介: 刘志坚男,1975年生,博士,教授,研究方向为电力系统稳定运行与控制。E-mail:248400248@qq.com

引用本文:

刘志坚, 刘瑞光, 梁宁, 刘晓欣. 含电转气的微型能源网日前经济优化调度策略[J]. 电工技术学报, 2020, 35(zk2): 535-543. Liu Zhijian, Liu Ruiguang, Liang Ning, Liu Xiaoxin. Day-Ahead Optimal Economic Dispatching Strategy for Micro Energy-Grid with P2G. Transactions of China Electrotechnical Society, 2020, 35(zk2): 535-543.

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