Electric power line fault point location method and detection terminal, master station and location system thereof

Abstract

The invention provides an electric power line fault point location method and a detection terminal, a master station and a location system thereof. The detection terminal uses current, sound, shock wave, magnetic field, infrared ray, ultraviolet ray, visible light, air pressure and other sensors to detect physical quantity capable of reflecting electric power line short circuit fault characteristics and parameter data of the physical quantity related to the electric power line operation state and locally recognize the fault of the electric power line and determine fault time. After the detection terminal recognizes the fault of the related electric power line, the detected data are transmitted to the location master station. The location master station comprises a data receiving component, a data storage component, a data processing component and a human-computer interaction component. The position of the electric power line fault point is calculated according to the data provided by the detection terminal and the position of the detection terminal corresponding to the data so as to realize timely and accurate location of the electric power line fault and overcome the defects of the fault location system in the background technology.

Description

technical field [0001] The invention relates to a method for locating a power line fault point, a detection terminal, a master station, and a locating system. Background technique [0002] The power line is a basic part of the power system and is an intermediate link in the transmission and distribution of electric energy. The safe and stable operation of the power system is of great significance to the development of the national economy, social public order and normal life order. Due to the wide distribution of power lines, Often faced with the influence of various geographical environments and climate environments, it is the weak link of the power system, especially the high-voltage, ultra-high voltage and ultra-high voltage power lines have long distances, wide distribution, diverse geographical environments, and complex meteorological conditions. Flashover may occur under harsh weather and environmental conditions such as pollution, pollution, etc., resulting in short-c...

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Problems solved by technology

Traditional power line fault location methods such as impedance method, fault analysis method (power frequency parameter method), traveling wave method, etc., are all based on the power line parameter theory and traveling wave propagation theory, and consider the structural characteristics of the line for detection and signal analysis and location Fault point, these fault location methods often need to be corrected for the specific conditions of different lines, and are easily affected by signal propagation attenuation and interference, resulting in inaccurate fault location, which cannot meet the requirements of fast recovery of power transmission and safe and stable operation of power lines; existing A power line fault on-line monitoring system based on the above-mentioned technology locates the fault point by monitoring the fault current flowing on the iron tower of the line. Its disadvantage is that it can only locate the fault that passes through the tower to ground, but cannot locate the fault that the fault current does not flow through the tower. Therefore, Cannot meet the basic requirements of power line fault location

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