| 引用本文: | 曹智平,周力行,张艳萍,等.基于供电可靠性的微电网规划[J].电力系统保护与控制,2015,43(14):10-15.[点击复制] |
| CAO Zhiping,ZHOU Lixing,ZHANG Yanping,et al.Micro-grid planning based on supply reliability[J].Power System Protection and Control,2015,43(14):10-15[点击复制] |
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| 摘要: |
| 微电网作为一种能够实现自我控制、保护和管理的自治系统，既可并网运行，亦可孤立运行，能极大程度地提高负荷的供电可靠性。提出一种以提高配电网供电可靠性为目标的多阶段决策的微电网规划方法，较之传统方法有效避免了耗时过长、难以求解的缺点。其中阶段一为根据故障遍历影响矩阵对系统进行可靠性评估，找出可靠性不满足要求的负荷点。阶段二为针对阶段一中搜索到的负荷节点，利用节点邻接矩阵确定微电网的位置以及数目。阶段三以电压偏移及网络损耗最小为目标函数，并利用具有全局搜索能力的和声算法进行求解，确定分布式电源在所有微电网中的容量。为了提高算法的稳定性及避免陷入局部最优，采用动态和声记忆库的选择概率和扰动概率，随迭代次数的增加而变化，并基于拥挤度距离选取和声记忆库内的解。以RBTS-BUS 6作为算例的仿真结果验证了该方法的有效性与合理性。 |
| 关键词: 微电网 供电可靠性 多阶段决策 和声算法 |
| DOI：10.7667/j.issn.1674-3415.2015.14.002 |
| 投稿时间：2014-10-13修订日期：2015-01-07 |
| 基金项目:湖南省自然科学基金资助项目(10JJ5059); 湖南省教育厅科学研究重点项目(10A106) |
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| Micro-grid planning based on supply reliability |
| CAO Zhiping,ZHOU Lixing,ZHANG Yanping,LIU Jiajun,FAN Bin |
| (College of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha
410114, China;Wuwei Power Supply Company, Gansu Electric Power Company, Wuwei 733000, China) |
| Abstract: |
| Micro-grid is an autonomous system of self-control, protection and management. It can operate both jointly and separately and improve the reliability of power supply to a great extent. This paper provides a multi-stage decision planning method for micro-grid, less time-consuming and easier to solve in comparison with the traditional method, aiming at the promotion of the reliability of power supply of the distribution network. At the first phase, according to the fault traversal influence matrix, a reliability evaluation is implemented on the system to find out the load point which can’t meet the requirement for reliability. At the second phase, the position and number of micro-grid are confirmed by node adjacent matrix on the basis of the load point searched at the first phase. At the third phrase, with the voltage deviation and minimum network loss as the objective functions and calculated by harmony search with global searching ability, the capacity of distributed generation in all micro-grids are defined. In order to improve the stability of the algorithm and avoid falling into local optimum, dynamic memory choice probability and disturbance probability of harmony search are used, changing with the increase of the number of iterations, and the solutions of harmony memory is selected based on crowded degree distance. The effectiveness and rationality of this method are verified by simulation results of RBTS-BUS 6-bus system. |
| Key words: micro-grid supply reliability multi-stage decision harmony search |
