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基于双铅碳电池储能系统的微电网优化运行控制策略
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现代电力系统仿真控制与绿色电能新技术教育部重点实验室(东北电力大学), 吉林省吉林市 132012

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国家自然科学基金资助项目(U1766204)


Optimal Operation Control Strategy of Microgrid Based on Double-lead Carbon Battery Energy Storage System
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Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology, Ministry of Education(Northeast Electric Power University), Jilin 132012, China

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    摘要:

    针对风力、光伏发电与电动汽车充电波动性威胁微电网安全运行问题,基于对铅碳电池全生命周期内吞吐电量与充放电深度关系的研究,提出了基于双电池储能系统(DBESS)运行平衡度指标控制的充放电模式切换路径优化策略,以及基于铅碳电池最佳充放电深度的DBESS充放电控制策略。利用包含风光发电、双铅碳电池储能系统、锂离子电动汽车充电和常规负荷的实测运行数据,对上述控制策略与传统控制策略的计算结果进行了对比分析,结果表明所提出的控制策略不仅可以达到优化DBESS充放电路径的目的,最大限度拓展DBESS可用容量,还可打破DBESS始末荷电状态一致的限制,提高储能系统使用灵活性。最后以DBESS充放电饱和能力指标及充放电稳定性指标为评价标准,验证了所提出控制策略的合理性和有效性。

    Abstract:

    Due to the fact that power fluctuation caused by wind power, photovoltaics and electric vehicle charging threatens the safe operation of microgrid, based on the relationship between electric throughput and the depth of charging and discharging in the whole life of lead carbon battery, an optimization strategy for path switching of charging and discharging mode controlled by operation balance index of double battery energy storage system(DBESS)is proposed, and a charging and discharging control strategy of DBESS based on the best depth of charging and discharging of lead carbon battery is proposed. Calculation results of the strategy proposed and traditional strategy are compared by using actual operational data of wind power, photovoltaics, double lead carbon battery energy storage system, lithium-ion electric vehicle charging and regular load. Results show that the proposed strategy can not only optimize the path of charging and discharging mode, but also break the restriction of state of charge consistency between beginning and end of the charging and discharging process in the DBESS, so that the available capacity can be increased to the most extent and the flexibility of the use of battery energy storage system can be enhanced. The rationality and validity of the proposed strategy are finally verified by charging and discharging saturability index and stability index of DBESS.

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严干贵,李洪波,段双明,等.基于双铅碳电池储能系统的微电网优化运行控制策略[J].电力系统自动化,2019,43(13):46-53. DOI:10.7500/AEPS20181129005.
YAN Gangui, LI Hongbo, DUAN Shuangming,et al.Optimal Operation Control Strategy of Microgrid Based on Double-lead Carbon Battery Energy Storage System[J].Automation of Electric Power Systems,2019,43(13):46-53. DOI:10.7500/AEPS20181129005.

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  • 收稿日期:2018-11-29
  • 最后修改日期:2019-04-17
  • 录用日期:2019-03-21
  • 在线发布日期: 2019-04-18
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