文章摘要
赵梓杉,蒙志全,张俊峰,等.应急微电网中柴储移动电源的协调及均衡控制策略[J].电力系统自动化,2019,43(10):53-59. DOI: 10.7500/AEPS20180730011.
ZHAO Zishan,MENG Zhiquan,ZHANG Junfeng, et al.Control Strategy of Coordination and Equalization for Diesel Generator and Energy Storage System in Emergency Microgrid[J].Automation of Electric Power Systems,2019,43(10):53-59. DOI: 10.7500/AEPS20180730011.
应急微电网中柴储移动电源的协调及均衡控制策略
Control Strategy of Coordination and Equalization for Diesel Generator and Energy Storage System in Emergency Microgrid
DOI:10.7500/AEPS20180730011
关键词: 配电网  应急微电网  柴油发电机  储能系统  多源协调控制
KeyWords: distribution network  emergency microgrid  diesel generator  energy storage system  multi-source coordination control
上网日期:2019-03-26
基金项目:国家重点研发计划资助项目(2016YFB0900605);国家自然科学基金资助项目(51577168)
作者单位E-mail
赵梓杉 浙江大学电气工程学院, 浙江省杭州市 310027  
蒙志全 浙江大学电气工程学院, 浙江省杭州市 310027  
张俊峰 广东电网有限责任公司电力科学研究院, 广东省广州市 510080  
何小良 国网浙江省电力有限公司杭州供电公司, 浙江省杭州市 310009  
江峰 浙江大学电气工程学院, 浙江省杭州市 310027  
辛焕海 浙江大学电气工程学院, 浙江省杭州市 310027 xinhh@zju.edu.cn 
摘要:
      配电网发生停电事故时,可组建应急微电网来应急供应电力。由于应急微电网存在临时建立、通信条件差、工况多变及电源车频繁插拔等问题,提出了应急微电网中柴储移动电源的协调及均衡控制策略,同时将储能与柴油发电机作为主电源供电。所提控制在一次下垂控制与二次频率及电压恢复控制的基础上加入均衡控制,并基于不同时间尺度解耦。其中,柴油发电机的均衡控制通过反馈频率控制信号来修正稳定运行点,以补偿调速器测量误差实现出力均衡;储能的均衡控制根据荷电状态偏差动态调节下垂斜率,以实现荷电状态的均衡。所提控制策略不依赖于中央控制器,有利于应急供电的迅速开展。最后,仿真验证了控制策略的可行性与有效性。
Abstract:
      The emergency microgrid can provide emergency power supply to the distribution networks when large-area blackout occurs. But the emergency microgrid is temporarily established, with poor communication conditions, changeable working conditions and frequently plugged and unplugged mobile emergency power sources. The coordination and equalization control strategy for the emergency microgrid is proposed, in which energy storage systems and diesel generators are used as the main power supply. Besides the primary droop control and the secondary control for frequency and voltage recovery, the control strategy adds the auxiliary equalization control based on multiple time scales. The equalization control of diesel generators can adjust the stable operation point based on the feedback frequency control signal in order to correct the speed measurement error and equalize the output of each power source. And the equalization control of energy storage systems can realize state of charge(SOC)balance by dynamically adjusting the droop slope based on the deviation of SOC. The control strategy does not rely on central controller of microgrid to facilitate quick emergency power supply. Finally, simulation results verify the feasibility and effectiveness of the proposed control strategy.
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