Real-time operation of heterogeneous energy storage units
Real-time operation of heterogeneous energy storage units
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DOI：
10.1109/globalsip.2016.7905976
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发表时间：
2016-12
期刊：
影响因子：
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通讯作者：
Sarthak Gupta;V. Kekatos
中科院分区：
文献类型：
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作者：
Sarthak Gupta;V. Kekatos
随着可再生能源的普及，储能系统正成为智能电网的关键组成部分。存储技术具有多种容量、充电和响应规格。投资和退化成本可能需要在多个时间尺度上给电池充电，可能与电网调度的控制周期相匹配。为此，这里考虑了配备慢速和快速响应电池的微电网。能源管理决策分为两个阶段。反应缓慢的电池按小时分配，在多个快速控制槽中保持决策不变。在Lyapunov优化的基础上，慢速和快速响应的电池充电基于实时和数据依赖，具有可量化的次最优性界限。用实际数据进行的数值试验证明了操作非均质电池的优越性。
Energy storage systems are becoming a key component in smart grids with increasing renewable penetration. Storage technologies feature diverse capacity, charging, and response specifications. Investment and degradation costs may require charging batteries at multiple timescales, potentially matching the control periods at which grids are dispatched. To this end, a microgrid equipped with slow- and fast-responding batteries is considered here. Energy management decisions are taken at two stages. Slow-responding batteries are dispatched at an hourly resolution with decisions remaining invariant over multiple fast control slots. Building on Lyapunov optimization, slow- and fast-responding batteries are charged based on real-time and data-dependent with quantifiable sub-optimality bounds. Numerical tests using real data demonstrate the advantage of operating heterogeneous batteries.