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蓄能调温负荷与光伏的智能化互动运行策略

2020-04-20陈岩靳伟王文宾李会彬韩胜峰

河北工业科技 2020年2期

陈岩 靳伟 王文宾 李会彬 韩胜峰

摘 要:为了充分利用蓄能调温负荷的调节资源,节约调温负荷的用电成本,并有效消纳光伏电量,提出了“光伏+调温负荷”的智能化互动运行策略。首先,建立了基于户型参数和天气信息的房屋冷、热需求模型;其次,以运行成本最小为目标,结合光伏出力和用冷、用热需求,在优先使用谷电电量的原则下,提出蓄能负荷与光伏供用电互动逻辑和运行策略;第三,以全年天气数据为驱动,按互动逻辑关系进行了全年运行累积计算的年运行成本分析。结果表明,互动运行模式相比于光伏与蓄能调温负荷独立模式的运行成本有很大降幅,“光伏+调温负荷”策略有效解决了光伏消纳和调温负荷电费的问题。这不仅有利于减少环境污染,还能够实现政府与用户的双赢。

关键词:电力系统及其自动化;蓄冷/蓄热负荷;光伏发电;峰谷电价;互动运行

中图分类号:TM73 文献标识码:A

Abstract:In order to make full use of the adjustable resource of cold/thermal attemperation loads with storage energy (CTAL), and reduce electricity cost and consume of the photovoltaic (PV) energy, the interactive operation of "PV+CTAL" was proposed. Firstly, the model based on house parameters and weather data was established to analyze the cold/thermal demand, then interactive logics of operation in "PV+CTAL" was derived to minimize the cost of operationwith prioritization of using valley electricity,considering the PV output and  demand of cold/thermal. Finally, a scenario was presented to cumulatively calculate the annual operation cost according to the weather data and the interaction logical relationship. The results show that the operating cost in the "PV+CTAL" interactive mode is comparatively lower than that in standalone mode, the "PV+CTAL" interactive operating strategy can effectively solve the problem of the electricity price affected by PV consumption and CTAL, which not only will reduce environmental pollution, but also achieve winwin results with governments and users.

Keywords:power system and automation; cold/thermal storage attemperation loads; photovoltaic generation; peak/valley electricity price; interactive operation

为缓解燃煤污染,近年来国家大力推行電能替代和清洁替代政策,用于室内温度调节的电制热、电制冷负荷越来越多地应用于商业、办公和居民建筑,已逐步形成规模化、高比例的态势。蓄冷/蓄热功能的调温负荷具有用电时段可选、运行经济灵活的优点而得到了广泛应用。另一方面,分布式光伏消纳问题一直是电力系统运行和国家推行新能源政策的重要瓶颈之一[1],若充分利用蓄能调温负荷的调节资源与光伏发电形成互动,充分利用光伏电量为调温负荷供电,可有效解决光伏消纳和调温负荷的电费问题。……

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