| 引用本文: | 徐玉琴,李文帅,赵蓓蓓.一种大电源接入电网接入点选取合理性的评估方法[J].电力系统保护与控制,2017,45(12):94-100.[点击复制] |
| XU Yuqin,LI Wenshuai,ZHAO Beibei.An evaluation method for the rationality of the voltage level of a large power supply connected to the power network[J].Power System Protection and Control,2017,45(12):94-100[点击复制] |
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| 摘要: |
| 合理确定大电源接入点对于分层分区、合理化电网结构具有重要意义。为此，研究了基于综合权重的改进灰色关联分析法对大电源接入点选取合理性进行评估的方法。该评估方法选取短路电流、潮流分布、网损、稳定性、N-1故障校验结果作为综合评价的指标，并且采用整体短路电流水平、潮流熵、网损、V-Q灵敏度、N-1故障过负荷线路条数来定量描述上述评价指标。为避免单一赋权法的局限性，首先采用组合赋权法确定各指标的综合权重，然后利用基于综合权重的改进灰色关联分析法对大电源接入点选取方案进行综合评估，最后利用PSD电力系统分析软件进行仿真。仿真算例验证了该方法的有效性和可行性。 |
| 关键词: 大电源 接入点 组合赋权 灰色关联 综合评估 |
| DOI：10.7667/PSPC160891 |
| 投稿时间：2016-06-17修订日期：2016-08-03 |
| 基金项目: |
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| An evaluation method for the rationality of the voltage level of a large power supply connected to the power network |
| XU Yuqin,LI Wenshuai,ZHAO Beibei |
| (North China Electric Power University, Baoding 071000, China) |
| Abstract: |
| The reasonable determination of the access point of the large power supply connected to the power grid is of great significance to the hierarchical partition and the rationalization of the power grid structure. Therefore, in this paper, the method of evaluating the rationality of the access point of the large power supply connected to the power grid by using the improved gray correlation analysis method based on the comprehensive weight is studied. The short circuit current, the power flow distribution, the network loss, the stability, and the N-1 fault check result are selected as the comprehensive evaluation index. And the overall short-circuit current level, the trend of entropy, network loss, V-Q sensitivity, and the number of N-1 fault load line are used to describe the above evaluation index quantitatively. In order to avoid the limitation of the single weighting method, firstly, the combined weighting method to determine the comprehensive weight of each index is used, and then the improved gray correlation analysis method based on the comprehensive weights is applied to evaluate the scheme of the access point of the large power supply connected to the power grid comprehensively. Finally, the PSD power system analysis software is adopted to carry out the simulation. The effectiveness and feasibility of the proposed method are verified by the simulation example. |
| Key words: large power supply access point combination weighting gray relation comprehensive evaluation |
