| 引用本文: | 周依希,李晓明,瞿合祚.基于反熵AHP二次规划组合赋权法的电网节点综合脆弱性评估[J].电力自动化设备,2019,39(7): |
| ZHOU Yixi,LI Xiaoming,QU Hezuo.Node comprehensive vulnerability assessment of power grid based on anti-entropy-AHP quadratic programming combination weighting method[J].Electric Power Automation Equipment,2019,39(7): |
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| 摘要: |
| 针对电网脆弱节点辨识存在的评估指标片面、不同评价方法偏差较大的问题，从系统固有拓扑结构、电网当前安全运行水平以及预想故障冲击影响三方面出发，构建电网脆弱性节点评估指标体系。该体系基于系统对脆弱度的需求层次，衍生出改进节点韧性度、节点电气介数、节点能量裕度、改进潮流分布熵及最小失负荷百分比等相关指标，综合考虑电网结构抗毁性、节点抗干扰能力、节点退出运行后系统潮流分布及系统自我调节后仍无法避免负荷削减时的状况。提出基于反熵-AHP二次规划组合赋权法的综合评估模型对节点脆弱度进行评估。IEEE39节点系统算例证明了所提指标体系与评价方法的合理性和有效性。 |
| 关键词: 脆弱节点 节点韧性度 能量函数 最小失负荷百分比 反熵法 二次规划组合赋权 |
| DOI：10.16081/j.issn.1006-6047.2019.07.020 |
| 分类号:TM761 |
| 基金项目:广东电网科技项目(GDKJXM20161884) |
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| Node comprehensive vulnerability assessment of power grid based on anti-entropy-AHP quadratic programming combination weighting method |
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ZHOU Yixi, LI Xiaoming, QU Hezuo
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School of Electrical Engineering, Wuhan University, Wuhan 430072, China
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| Abstract: |
| Aiming at the problem of one-sided evaluation index and large deviation of different evaluation methods in vulnerable node identification of power system, an evaluation index system of vulnerable node is built from three aspects of system inherent topology, system current safe operation level and impact of expected fault. The system, based on the demand hierarchy of system to vulnerability, derives related indexes such as improve node toughness, node electric betweenness, node energy margin, improved power flow distribution entropy and minimum load loss percentage. Considering comprehensively the invulnerability of grid structure, node anti-interference ability, power flow distribution after node withdrawing operation, and inevitable load reduction after system self-regulation, a comprehensive evaluation model based on anti-entropy-AHP quadratic programming combination weighting method is proposed to evaluate node vulnerability. The case of IEEE 39-bus system verifies the rationality and effectiveness of the proposed index system and evaluation method. |
| Key words: vulnerable node node ductility energy function minimum load loss percentage anti-entropy method quadratic programming combination weighting |
