Abstract:Taking mathematical model of the microgrid and reliability parameters of the components into account, this paper proposes two vulnerability assessment indexes-weighted complex network parameter and nodes-lines comprehensive sensitivity to set up a vulnerability assessment system of the microgrid. Finally the microgrid reconfiguration model considering the grid connected/ island mode and vulnerability assessment indices are built. Taking CERTS system as an example, the model in this paper is calculated by using search vector artificial physics optimization(SV-APO) algorithm to minimize the system vulnerability. The result shows that the model is able to provide a correct and effective reconfiguration solution and the operation mode based on the structure parameters and the state parameters of the micro-grid after fault.
[1] Ali Mehrizi-Sani, Reza Iravani. Potential-function based control of a micro-grid in islanded and grid- connected modes[J]. IEEE Transactions on Power Systems, 2010, 25(4): 1883-1891. [2] Carl Johan Wallnerström, Patrik Hilber. Vulnerability analysis of power distribution systems for cost- effective resource allocation[J]. IEEE Transactions on Power Systems, 2012, 27(1): 224-232. [3] 陈晓刚, 孙可, 曹一家. 基于复杂网络理论的大电网结构脆弱性分析[J]. 电工技术学报, 2007, 22(10): 138-144. Chen Xiaogang, Sun Ke, Cao Yijia. Structural vulner-ability analysis of large power grid based on complex network theory[J]. Transactions of China Electrotechnical Society, 2007, 22(10): 138-144. [4] 刘群英, 刘俊勇, 刘起方, 等. 支路约束优化下的电网结构脆弱性研究[J]. 电工技术学报, 2011, 26(3): 148-155. Liu Qunying, Liu Junyong, Liu Qifang, et al. Research on grid structural vulnerability based on optimal branch limit[J]. Transactions of China Electrotechnical Society,2011, 26(3): 148-155. [5] 邵莹, 于继来. 采用源流路径电气剖分信息的电网脆弱性评估[J]. 中国电机工程学报, 2009, 29(31): 34-39. Shao Ying, Yu Jilai. Power grid vulnerability assessment based on electrical dissection information of the electric power network[J]. Proceedings of the CSEE, 2009, 29(31): 34-39. [6] 卢锦玲, 姬群星, 朱永利. 基于能量函数法的电网脆弱性评估[J]. 电网技术, 2008, 32(7): 30-34. Lu Jinling, Ji Qunxing, Zhu Yongli. Power grid vulnerability assessment based on energy function[J]. Power System Technology, 2008, 32(7): 30-34. [7] 宋斌, 李鹏, 史文勇, 张宪基于多代理系统的微网重构研究[C]. 中国高等学校电力系统及其自动化专业第二十五届学术年会, 长沙, 2009. [8] 王凌, 李培强, 李欣然, 等. 微电源建模及其在微电网仿真中的应用[J]. 电力系统及其自动化学报, 2010, 22(3): 32-38. Wang Ling, Li Peiqiang, Li Xinran, et al. Modeling of micro-powers and its application in micro-grid simulation[J]. Proceedings of the CSU-EPSA, 2010, 22(3): 32-38. [9] 张建华, 黄伟. 微电网运行控制及保护技术[M]. 北京: 中国电力出版社, 2010. [10] 丁明, 韩平平. 加权拓扑模型下的小世界电网脆弱性评估[J]. 中国电机工程学报, 2008, 28(10): 20-25. Ding Ming, Han Pingping. Vulnerability assessment to small-world power grid based on weighted topological model[J]. Proceedings of the CSEE, 2008, 28(10): 20-25. [11] 魏震波, 刘俊勇, 朱国俊, 等. 基于可靠性加权拓扑模型下的电网脆弱性评估模型[J]. 电工技术学报, 2010, 25(8): 131-136. Wei Zhenbo, Liu Junyong, Zhu Guojun, et al. Vulnerability evaluation model to power grid based on reliability-parameter-weighted topological model [J]. Transactions of China Electrotechnical Society, 2010, 25(8): 131-136. [12] 卢锦玲, 朱永利. 基于暂态能量裕度的电力系统脆弱性评估[J]. 电工技术学报, 2010, 25(6): 96-103. Lu Jinling, Zhu Yongli. Power system vulnerability assessment based on transient energy margin[J]. Transactions of China Electrotechnical Society, 2010, 25(6): 96-103. [13] 王锡淮, 李军军, 肖健梅. 基于梯度 DPSO 算法在舰船电力系统网络重构[J]. 电工技术学报, 2007, 22(12): 140-145. Wang Xihuai, Li Junjun, Xiao Jianmei. Network reconfiguration of the shipboard power system based on gradient discretization method of partical swarm optimization[J]. Transactions of China Electrotechnical Society, 2007, 22(12): 140-145. [14] 张浩, 和敬涵, 薄志谦, 等. 基于动态规划算法的故障恢复重构[J]. 电工技术学报, 2011, 26(12): 162-167. Zhang Hao, He Jinghan, Bo Zhiqian, et al. Service restoration based on dynamic programming[J]. Transactions of China Electrotechnical Society, 2011, 26(12): 162-167. [15] 王艳, 曾建潮. 一种基于拟态物理学优化的多目标优化算法[J]. 控制与决策, 2010, 25(7): 1040-1044. Wang Yan, Zeng Jianchao. Multi-objective optimization algorithm based on artificial physics optimization[J]. Control and Decision, 2010, 25(7): 1040-1044. [16] Qiao Ying, Lu Zongxiang, Mei Shengwei. Micro-grid reconfiguration in catastrophic failure of large power systems[C]. International Conference on Sustainable Power Generation and Supply, SUPERGEN 09, 2009: 1-8.