Power grid fault detection system

Abstract

The invention relates to a power grid fault detection system and belongs to the technical field of electric power. The power grid fault detection system is provided with a power grid, the power grid is connected with a detection circuit, each branch circuit is provided with a plurality of current transformers, the current transformers are used for collecting current signals on the power grid, the detection circuit is connected to a fault judgment circuit, the fault judgment circuit is provided with a photoelectric conversion unit, a fault level judgment unit and a signal generator, the fault judgment circuit is connected with an alarm processing circuit, and the alarm processing circuit is further connected with a monitoring center. The power grid fault detection system has the advantages that the detection circuit is provided with the current transformers, the current transformers are utilized to obtain current information on the power grid, and information of a fault signal is determined through multiple judgment units and sent out through an alarming device and the monitoring center, so that the fault can be eliminated at the highest speed. The power grid fault detection system is simple in structure, convenient to operate and low in cost.

Description

Technical field: [0001] The invention relates to a grid fault detection system, which belongs to the technical field of electric power. Background technique: [0002] my country's distribution network has the characteristics of complex line structure, diverse environment, frequent and complex faults, and heavy maintenance workload. If a fault occurs in a certain section of the distribution line, it is necessary to check the location of the fault one by one. Not only is the work intensity high, but it will also delay the repair time and affect the reliability of power supply. The normal use and service life of power grid terminal equipment such as meters have a great impact. At present, the grid voltage fluctuates greatly, especially in rural areas, the grid voltage fluctuates even more; too high grid voltage often shortens the service life of grid terminal equipment, and sometimes even burns grid terminal equipment; while too low The grid voltage may cause the grid termina...

AI Technical Summary

Problems solved by technology

If a fault occurs in a certain section of the distribution line, it is necessary to check the location of the fault one by one. Not only is the work intensity high, but it will also delay the repair time and affect the reliability of power supply. The normal use and service life of power grid terminal equipment such as meters have a great impact

At present, the grid voltage fluctuates greatly, especially in rural areas, the grid voltage fluctuates even more; too high grid voltage often shortens the service life of grid terminal equipment, and sometimes even causes grid terminal equipment to burn out; and too low The grid voltage may cause the grid terminal equipment to fail to work normally. Therefore, the industry needs a detection device that can monitor the grid in real time to solve the problems faced by the industry

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