Active fault studying method of simple power distribution network based on current abrupt change information matrix

Abstract

The invention discloses an active fault studying method of a simple power distribution network based on a current abrupt change information matrix. The method comprises that a real-time current information matrix RAIM is established to record real-time feed line current information collected by a fault indictor; a historical current information matrix HAIM is established to record historical feedline current information collected by the fault indictor; a current abrupt change information matrix ATIM is established to record feed line current abrupt change information collected by the fault indictor; a current abrupt-change limit value information matrix ATLM is established to record feed line current abrupt-change limit value information; a current abrupt-change information logic matrix (ATIL) is established to record feed-line current abrupt change logic information collected by the fault indicator, and is calculated according to relation among the RAIM, HAIM, ATIM and ATLM; and fault conditions of different feed lines of the simple power distribution network are studied according to the ATIL, and a fault interval is determined. The study method can be used to study and locate faults of the simple power distribution network effectively.

Description

technical field [0001] The invention relates to the field of simple distribution network fault location, in particular to an active fault research and judgment method for a simple distribution network based on a current mutation information array. Background technique [0002] With the gradual advancement of the construction of smart distribution network, ensuring the safe operation of distribution network, shortening the time of power failure and improving the reliability of power supply has been widely concerned. [0003] The simple distribution network is a kind of distribution network suitable for economically underdeveloped areas and urban and rural areas, which aims to improve the reliability of power supply and realize the considerable power grid. , and areas with high power supply reliability requirements. [0004] As an important terminal equipment for feeder automation, the fault indicator is widely used in the current simple distribution network due to its small ...

AI Technical Summary

Problems solved by technology

In practical applications, due to the changeable on-site environment, such as large changes in temperature and humidity, a lot of sand and dust, and untimely maintenance, the accuracy of the acquisition device will be damaged, and the simple distribution network is mostly overhead lines, so the fault indication The current information collected by the device is relatively accurate, and when a fault occurs, it is often accompanied by a sudden change in the current. Therefore, it is of great significance to study the simple active detection method of the distribution network fault based on the current sudden change as information.

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