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为了满足智能配电网故障定位的实时性、可靠性、准确性等需求,提出了基于马氏距离算法的配电网故障定位系统。以IDT智能配电终端作为系统运行状态电气量实时采集核心模块,按F检验获得元件电气量变化显著性概率P值初判故障元件和故障类型后,通过马氏距离算法准确定位故障区域和故障元件,并采用IEEE9节点系统的三相短路故障对配电网故障定位系统进行测试分析。仿真结果表明,该系统能真实地反映配电网故障后故障区域和故障元件的电气量变化,可满足智能配电网在线故障定位需求。
In order to meet the requirements of real-time, reliability and accuracy of fault location of intelligent distribution network, a fault location system based on Mahalanobis distance algorithm is proposed. Taking IDT intelligent power distribution terminal as the system real-time electric quantity to collect the core module and checking the change of the electric quantity of the component according to the F test. Probability of probability P value After the initial fault component and fault type are determined, the fault area and fault are accurately located by the Mahalanobis distance algorithm Components, and uses IEEE9 node system of three-phase short-circuit fault distribution network fault location system for testing and analysis. The simulation results show that the system can truly reflect the changes of electrical quantities in the fault area and the faulty components after the distribution network fault, which can meet the needs of on-line fault location of the intelligent distribution network.