Efficient Allocation Strategy of Energy Storage Systems in Power Grids Considering Contingencies
Efficient Allocation Strategy of Energy Storage Systems in Power Grids Considering Contingencies
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DOI：
10.1109/access.2019.2957277
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发表时间：
2019
期刊：
影响因子：
3.9
通讯作者：
Ilyes Naidji;Moncef Ben Smida;M. Khalgui;A. Bachir;Zhiwu Li;N. Wu
中科院分区：
文献类型：
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作者：
Ilyes Naidji;Moncef Ben Smida;M. Khalgui;A. Bachir;Zhiwu Li;N. Wu
本文通过寻找 ESS 的最佳数量及其位置和规模来解决电网中储能系统 (ESS) 的分配问题，以提高应急状态下的可靠性。我们提出了一种基于应急敏感性的启发式方法来决定 ESS 的最佳数量和 ESS 支持的最有效位置，同时规避选址问题的组合性质。提出了意外事件敏感性指数（CSI）来表示意外事件对网络总线的影响。 CSI 对公交车进行排名，影响力较大的公交车有安装 ESS 的特权。对于固定的 ESS，尺寸确定为多周期交流最优功率流 (OPF) 问题，并通过具有时变加速度系数的自组织分层粒子群优化 (HPSO TVAC) 来解决。通过最小化总成本来选择最佳ESS大小，其中包括存储设备的投资成本、总线电压偏差成本和平均网络损耗成本。通过考虑发电概况的不同实现来考虑可再生能源发电的不确定性，然后通过采用最坏情况的方法来选择 ESS 的规模。所提出的方法已在修改后的 IEEE 30 总线系统和突尼斯电网上得到验证。获得的结果表明了所提出方法的有效性和相关的可靠性优点。
This paper addresses the allocation of Energy Storage Systems (ESSs) in power grids by finding the optimal number of ESSs and their locations and sizes with the goal of improving reliability in contingency states. We propose a contingency-sensitivity-based heuristic to decide the optimal number of ESSs and the most effective locations for ESSs support, while circumventing the combinatorial nature of the siting problem. A contingency sensitivity index (CSI) is proposed which represents the impacts of contingencies on the network buses. The CSI ranks the buses, such that those with higher impacts have the privilege for installing ESSs. For the ESSs being fixed, the sizing is formulated as a multi-period AC optimal power flow (OPF) problem and solved by Self-Organizing Hierarchical Particle Swarm Optimization with Time Varying Acceleration Coefficients (HPSO TVAC). The optimal ESSs sizes are selected by minimizing a total cost, which includes investment cost of storage devices, bus voltage deviation cost and average network losses cost. Uncertainties of the renewable generation are accounted by considering different realizations of the generation profiles, then, ESSs sizes are selected by taking the worst case approach. The proposed methodology has been demonstrated on the modified IEEE 30-bus system and Tunisian Grid. The obtained results show the effectiveness of the proposed methodology and the related reliability merits.