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一种平抑微网联络线功率波动的电池及虚拟储能协调控制策略

DOI: 10.13334/j.0258-8013.pcsee.2015.20.002, PP. 5124-5134

Keywords: 需求响应,虚拟储能,标识优先列表,微网联络线功率波动,荷电状态,温控负荷

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Abstract:

提出一种蓄电池和虚拟储能的协调控制策略,用于有效平抑微网联络线功率波动。首先,针对电热泵可控负荷的群体特性,引入一种标识优先列表工具,用于构建负荷需求响应虚拟储能模型;在其控制策略设计时,类比于电池的荷电状态,引入一种虚拟储能状态标识CT,用于描述可控电热泵负荷的群体可调能力。进一步,提出一种可变滤波时间常数的微网联络线功率波动控制策略,通过为虚拟储能和电池储能系统设置两种不同时间常数的巴特沃兹滤波器,实现其分别平抑微网联络线功率波动中的高频和低频成分;同时通过虚拟储能和电池储能的优化协调,既可保证参与负荷需求响应用户的舒适性,又能有效减少电池储能的充放电频次,避免其过充过放情况发生,从而延长电池使用寿命。

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