| 引用本文: | 邱玉涛,肖先勇,熊 茜,赵 恒,李 忠.基于临界阻抗和广度优先-条件搜索的暂降监测装置优化配置[J].电力自动化设备,2014,34(10): |
| QIU Yutao,XIAO Xianyong,XIONG Qian,ZHAO Heng,LI Zhong.Optimal sag monitor placement based on critical impedance and breadth first-condition search[J].Electric Power Automation Equipment,2014,34(10): |
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| 摘要: |
| 降低暂降可观测矩阵的维数和减少监测装置优化配置时间是电网电压暂降监测装置优化配置面临的两大困难。基于现有暂降可观测区域原理，引入临界阻抗和等效阻抗的概念，利用广度优先-条件搜索形成暂降母线集，合并导致相同暂降特征的故障点，构造全网暂降可观测矩阵，降低了矩阵维数，减少了优化配置的计算量，在保证配置结果正确的前提下，有效减少了优化配置时间。对IEEE 30、IEEE 118和IEEE 300节点系统仿真，验证了所提方法的正确性和适用性，并证明，电网规模越大，所提方法对优化配置时间的改进效果越明显。 |
| 关键词: 电压暂降 监测 可观测矩阵 可观测性 临界阻抗 条件搜索 优化 |
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| 基金项目:基金项目：四川省科技支撑计划资助项目（2013GZ0062）；四川省电力公司科技项目 |
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| Optimal sag monitor placement based on critical impedance and breadth first-condition search |
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QIU Yutao1, XIAO Xianyong1, XIONG Qian2, ZHAO Heng2, LI Zhong2
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1.School of Electrical Engineering & Information，Sichuan University，Chengdu 610065，China;2.Ziyang Power Supply Company，State Grid Sichuan Electric Power Company，Ziyang 641300，China
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| Abstract: |
| The crucial measure in the optimal placement of voltage sag monitors is the reduction of the observability matrix dimensionality and time consumption. Based on the exiting monitor reach area theory，the concepts of equivalent impedance and critical impedance are introduced. Breadth first-condition search algorithm is applied to form the set of bus with voltage sag. The fault points resulting in same voltage sag characteristics are merged to build the system-wide sag observability matrix. The dimensionality of the observability matrix and the calculation load are thus reduced，which effectively speeds up the placement of sag monitors while ensures its correctness. Simulations are carried out for IEEE 30-bus，IEEE 118-bus and IEEE 300-bus systems and the simulative results verify the validity and feasibility of the proposed method，showing that，the larger the power system is，the more obvious the effect of time consumption reduction is. |
| Key words: voltage sag monitoring observability matrix observability critical impedance conditional search optimization |
