| 引用本文: | 袁昊哲,杨苹.串联结构多微网并离网模式切换控制策略[J].电力系统保护与控制,2017,45(19):94-100.[点击复制] |
| YUAN Haozhe,YANG Ping.Grid-connected and off-grid mode switching control strategies of multi-microgrid with series structure[J].Power System Protection and Control,2017,45(19):94-100[点击复制] |
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| 摘要: |
| 相邻区域内的微电网因互联互供所需可组成多微网系统。在研究单微网的锁相环控制、联络线功率和相位调节的基础上，针对串联结构多微网的结构特点，提出一种多微网并/离网模式切换控制策略。对于离转并模式切换，在不同初始相角和储能频率参考值的情况下，计算相应的离转并切换时间。对于并转离模式切换，根据主动和被动并转离两种情况，对子微网储能输出功率和联络线功率进行调节。仿真结果验证了该控制策略可实现串联结构多微网并/离网模式快速切换。 |
| 关键词: 多微网 串联结构 模式切换 初始相角 联络线功率 |
| DOI：10.7667/PSPC161569 |
| 投稿时间：2016-09-21修订日期：2016-10-28 |
| 基金项目:国家863计划(2014AA052001); 广东省科技计划项目(2012B040303005) |
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| Grid-connected and off-grid mode switching control strategies of multi-microgrid with series structure |
| YUAN Haozhe,YANG Ping |
| (Huizhou Electric Power Supply Bureau of Guangdong Power Grid Corporation, Huizhou 516003, China;School of Electric Power, South China University of Technology, Guangzhou 510640, China) |
| Abstract: |
| Due to interconnection and power supply, multi-microgrid system can be composed of multiple microgrids in adjacent area. Based on researches of single microgrid phase-locked loop control, tie-line power and phase adjustment, this paper presents grid-connected and off-grid mode switching control strategies of multi-microgrid with series structure characteristic. For off-grid to grid-connected mode switching, the control strategies calculate mode switching time of off-grid to grid-connected in different cases of initial phase and energy storage frequency reference value. For grid-connected to off-grid mode switching, based on the active and passive mode switching, the control strategies adjust energy storage output power and tie-line power of the sub-microgrid. Simulation results verify that the control strategies can realize grid-connected and off-grid mode fast switching of multi-microgrid with series structure. This work is supported by National High-tech R & D Program of China (863 Program) (No. 2014AA052001) and Science and Technology Program of Guangdong Province (No. 2012B040303005). |
| Key words: multi-microgrid series structure mode switching initial phase tie-line power |
