交直流电网的无功补偿选点及容量优化研究
目前,有关交直流电网无功优化的研究受到了越来越多的关注。针对交直流电网的无功优化问题,提出了一种基于改进粒子群算法的交直流电网无功补偿优化方法。首先优化了无功补偿的选点方法。在奇异值分解原理的基础上,采用多次潮流计算、逐次定点的方法进行无功补偿选点,避免了无功过补偿。然后提出了一种基于分组寻优的改进粒子群算法,该算法可有效避免陷入局部最优解,提高寻优速度。最后,采用改进的IEEE-57标准节点系统对所提出的方法进行验证。相比传统方法,该方法能够有效提高交直流电网的电能质量,减少无功补偿容量,具有更好的优化效果。...
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| Published in | 电力系统保护与控制 Vol. 45; no. 10; pp. 91 - 97 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
上海核工程研究设计院,上海,200233%国网宜昌供电公司,湖北 宜昌,443000%国网太原供电公司,山西 太原,030012%武汉大学电气工程学院,湖北 武汉,430072
2017
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1674-3415 |
| DOI | 10.7667/PSPC160780 |
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| Summary: | 目前,有关交直流电网无功优化的研究受到了越来越多的关注。针对交直流电网的无功优化问题,提出了一种基于改进粒子群算法的交直流电网无功补偿优化方法。首先优化了无功补偿的选点方法。在奇异值分解原理的基础上,采用多次潮流计算、逐次定点的方法进行无功补偿选点,避免了无功过补偿。然后提出了一种基于分组寻优的改进粒子群算法,该算法可有效避免陷入局部最优解,提高寻优速度。最后,采用改进的IEEE-57标准节点系统对所提出的方法进行验证。相比传统方法,该方法能够有效提高交直流电网的电能质量,减少无功补偿容量,具有更好的优化效果。 |
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| Bibliography: | AC-DC grids; reactive power compensation; singular value decomposition; particle swarm optimization;grouping optimizing Recently the study on reactive power compensation in AC-DC grids has received more and more attention. Based on improved particle swarm optimization （PSO）, this paper presents a novel method to optimize reactive power of AC-DC grids. Firstly, the locations of reactive power compensation are optimized. According to the principles of the singular value decomposition, the methods of multiple flow calculation and successive determined-point are adopted to avoid over-compensation. Then, an improved PSO method based on grouping optimizing is applied to optimize the compensation capacity, which can overcome the problem of premature convergence andimprove optimization speed. Finally, the proposed optimal algorithm is tested through the modified IEEE-57 bus system. Compared with traditional methods, this method can effectively improve power quality of AC-DC grids, reduce reactive power compensation ca |
| ISSN: | 1674-3415 |
| DOI: | 10.7667/PSPC160780 |