| 串联结构多微网并离网模式切换控制策略 |
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| 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 |
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| 作者姓名： | 袁昊哲 杨苹 |
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| 作者单位： | 广东电网有限责任公司惠州供电局，广东 惠州516003,华南理工大学电力学院，广东 广州 510640 |
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| 基金项目： | 国家863计划(2014AA052001); 广东省科技计划项目(2012B040303005) |
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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。
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| 关 键 词： | 多微网；串联结构；模式切换；初始相角；联络线功率 |
| 收稿时间： | 2016-09-21 |
| 修稿时间： | 2016-10-28 |
Grid-connected and off-grid mode switching control strategies of multi-microgrid with series structure |
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| YUAN Haozhe and 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 |
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| Authors: | YUAN Haozhe and YANG Ping |
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| Affiliation: | Huizhou Electric Power Supply Bureau of Guangdong Power Grid Corporation, Huizhou 516003, China and School of Electric Power, South China University of Technology, Guangzhou 510640, China |
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| 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). |
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| Keywords: | multi-microgrid series structure mode switching initial phase tie-line power |
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