Electrical early warning protection system and method

Abstract

The invention relates to the field of electric power systems, and discloses an electrical early warning protection system. The system comprises an electrical main loop, a current transformer, a voltage transformer, N non-contact sensors, an electrical early warning protection module and a display terminal; the current transformer and the voltage transformer are connected to the electrical main loop; the current transformer and the voltage transformer are connected with the electrical early warning protection module; the N non-contact sensors are not connected to the electrical main loop; the Nnon-contact sensors are connected with the electrical early warning protection module; and the electrical early warning protection module is connected with the display terminal. According to the technical scheme, in addition to the current transformer and the voltage transformer connected to the main loop and used to collect signals, the non-contact sensors are also adopted to collect the signalsof electrical equipment and circuits, so that defects and fault information can be early warned in advance; and meanwhile, a judgment basis of existing electrical protection is added, so that the reliability, selectivity and sensitivity of the electrical protection are improved. The invention further discloses an electrical early warning protection method.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to an electrical early warning protection system and method. Background technique [0002] In the power system, in order to ensure the safe operation of electrical equipment and lines, relay protection technology must be used. The existing relay protection technology collects parameters such as current, voltage, waveform and frequency of the electrical system. When these electrical parameters are abnormal When the relay protection issues an alarm or performs fault removal. However, the existing relay protection technology can only react when the electrical parameters are seriously abnormal, and often cannot give people enough time to solve the electrical fault problem. When the relay protection trips or malfunctions, it will cause a power outage in the power system; when the relay protection refuses to operate, it will cause damage to the power system equipment and lines or e...

AI Technical Summary

Problems solved by technology

[0004] Secondly, the display operation interface of the existing protection and monitoring technology is a liquid crystal display panel, which is fixedly installed, and the display content is small and inflexible. If the display interface can be upgraded to a mobile terminal (smart phone), the display interface will be more friendly, more intuitive and more intuitive. easily accepted by people

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