含电、气、热3种储能的微网综合能源系统经济优化运行

Economic optimal operation of microgrid integrated energy system with electricity,gas and heat storage

风电的反调峰特性和供暖季“以热定电”模式导致弃风现象严重,造成能源浪费。随着能源互联网的推进和综合能源系统的发展以及各种储能方式的出现,通过建立含有电、气、热3种储能方式的综合能源系统的运行方式,可以提高风电的利用率。将蓄电池、蓄热电锅炉和电转气(P2G)技术应用于微网系统,以成本费用最小为目标函数,建立微网综合能源系统的经济优化运行模型。对比分析了4种方案,通过算例验证方案的可行性,分析风电出力和负荷不确定性对效益的影响。结果表明含有3种储能方式的综合能源系统可以减少弃风电量,降低环境污染治理费用,提高经济效益,具有良好的应用前景。

The anti-peak regulation characteristic of wind power and the“power determined by heat”mode in the heating season lead to serious phenomenon of wind curtailment,resulting in energy waste.With the promotion of energy internet,the development of integrated energy system and the emergence of various energy storage modes,the utilization rate of wind power can be improved by establishing the operation mode of integrated energy system which contains three energy storage modes of electricity,gas and heat.The battery,heat storage electric boiler and P2G(Power to Gas)technology are applied to the microgrid system,and the economic optimal operation model of the microgrid integrated energy system is established with the minimum cost as its objective function.Four schemes are compared and analyzed,the feasibility of the scheme is verified by examples,and the influence of wind power output and load uncertainty on benefits is analyzed.The results show that the integrated energy system containing three energy storage modes can decrease the abandoned wind power,reduce the costs of environmental pollution control,improve the economic benefits,and have a good application prospect.