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孤岛交直流混合微电网群多级功率管理策略
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1.上海电力学院电气工程学院;2..国网湖南省电力有限公司永州供电分公司,湖南省永州市 425000;3.国网安徽省电力有限公司池州供电公司,安徽省池州市 247000;4.上海大学机电工程与自动化学院;5.智能电网教育部重点实验室天津大学

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Strategy of Multi-level Power Management for Islanded AC/DC Hybrid Microgrid Cluster
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1.College of Power Engineering,Shanghai University of Electric Power;2.School of Mechatronics Engineering and Automation,Shanghai University;3.Key Laboratory of Smart Grid of Ministry of Education Tianjin University

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    摘要:

    交直流混合微电网群作为多个交流、直流子微网的互联系统,其稳定运行依赖于合理的功率管理。如何发挥子微网的自治特性、实现子微网间功率互动支撑是交直流混合微电网群功率管理的关键问题之一。针对孤岛交直流混合微电网群,提出一种多级功率管理策略。该策略包含两部分:多级功率分配控制策略和多级功率互动管理策略。通过功率自治级、功率互助级和功率平衡级,实现系统功率的合理分配。考虑系统互联通信正常和通信故障两种运行情况,设计系统多级功率互动管理策略,保证孤岛交直流混合微电网群的供电质量,并减少系统不必要的功率互动损耗。该多级功率互动管理仅在事件触发时刻进行数据交换,减少了系统信息交换量,降低了系统对通信网络的要求。最后,通过MATLAB/SIMULINK仿真平台验证了所提控制策略的有效性。

    Abstract:

    The AC/DC hybrid multi-microgrids consists of multiple AC and DC sub-microgrid, and its stable operation depends on reasonable power management. How to play the autonomous feature of sub-microgrid and realize the power interaction between sub-microgrids is one of the key issues for the power management of AC/DC hybrid multi-microgrids. A multi-level power management strategy is proposed for the islanded AC/DC hybrid multi-microgrids. This management strategy consists of two parts: multi-level power allocation control and multi-level power interaction management. Reasonable allocation of power is achieved through power autonomous level, power interaction level, and power balance level. Considering the normal communication and communication failure, the multi-level power interaction management strategy is designed to ensure the power quality of the islanded AC/DC hybrid multi-microgrids and to reduce the unnecessary power interaction loss. The multi-level power interaction management strategy only exchanges data at the event triggering time, which reduces the amount of system information exchange and reduces the system requirements for the communication network. And the results of MATLAB/SIMULINK proved that the proposed control strategy is correct and feasible.

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米阳,宋根新,宋元元,等.孤岛交直流混合微电网群多级功率管理策略[J].电力系统自动化. DOI:10.7500/AEPS20190108003.

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  • 收稿日期:2019-01-08
  • 最后修改日期:2019-09-23
  • 录用日期:2019-07-11
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