基于联络线簇能量传输模式的互联区域电网脆弱性评估

发布时间：2018-04-04 02:14

本文选题：脆弱性　切入点：区域电网　出处：《工程科学与技术》2017年06期

【摘要】：针对目前电网脆弱性评估方法对网间作用关系考虑不足的问题,提出基于联络线簇能量传输模式的互联区域电网脆弱性综合评估。首先,阐述当前区域互联电网固有的层次结构和运行特征,指出实际运行电网具有黑箱数据特性与运行外部区域依赖的性质,分析基于联络线簇能量传输模式的区域电网脆弱性评估的合理性。其次,修正了节点结构和支路负载率这两个脆弱性评估指标宏观特征弱的缺点,引入扰动抵御水平和极限负载率两个新指标,通过两个新引入的指标,对当前电网脆弱性评估中尚未考虑的能量冲击特性与能量外部交换特性进行重点分析,建立切合区域互联电网实际运行控制模式的综合评估指标体系。然后,应用变异系数法对基于联络线簇能量传输模式的互联区域电网脆弱性进行多指标综合评估。最后,采用IEEE57节点系统进行算例分析,验证了本文方法的有效性。
[Abstract]:In order to solve the problem that the current methods of power grid vulnerability assessment do not consider the relationship between networks, a comprehensive vulnerability assessment of interconnected regional power grid based on the energy transmission mode of tie-line cluster is proposed.First of all, the inherent hierarchical structure and operation characteristics of the current regional interconnected power network are expounded, and it is pointed out that the actual operation grid has the characteristics of black box data and external region dependence.The rationality of vulnerability assessment of regional power grid based on tie-line cluster energy transmission mode is analyzed.Secondly, the shortcomings of the two vulnerability assessment indexes, node structure and branch load ratio, are corrected. Two new indexes, disturbance resistance level and limit load rate, are introduced, and two new indexes are introduced.The characteristics of energy shock and external energy exchange which have not been considered in the current vulnerability assessment of power grid are analyzed emphatically, and a comprehensive evaluation index system suitable for the actual operation control mode of regional interconnected power network is established.Then, the variability coefficient method is applied to evaluate the vulnerability of interconnected regional power grid based on tie-line cluster energy transmission mode.Finally, the effectiveness of the proposed method is verified by an example of IEEE57 node system.
【作者单位】：四川大学电气信息学院;国网四川省电力公司;国网四川省电力公司技能培训中心;
【基金】：国家自然科学基金资助项目(51477105)
【分类号】：TM711

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