Integrative protector of intelligent power grid terminal

Abstract

The invention relates to an integrative protector of an intelligent power grid terminal, which not only has the protective functions of overload, short circuit, overvoltage, undervoltage, electric leakage, automatic tracking of the electric leakage and the like but also has the integrative functions of adjustable operating value of the electric leakage, adjustable operating value of overcurrent, three-time automatic reclosing and the like. The integrative protector of the intelligent power grid terminal also has the functions of displaying and transmitting of the data of single-phase current, single-phase voltage, leakage current and the like and tripping fault alarming. The integrative protector of the intelligent power grid terminal also has the function of intelligentizing and networking management of a low-voltage power grid terminal of remote measurement, remote communication, remote control, remote adjustment and the like. The integrative protector of the intelligent power grid terminal comprises a plastic casing with high flame retardant, a main circuit, an auxiliary power supply circuit, a zero-sequence mutual inductor, a voltage sampling circuit, a manganese-copper split-stream sampling circuit, a data comparing and parameter adjusting circuit, a single chip microcomputer (U3), a light emitting diode (LED) display circuit, an alarm circuit, a remote control communication interface and an electric automatic reclosing circuit.

Description

1. Technical field [0001] The invention relates to a smart grid terminal comprehensive protection device in the field of low-voltage electrical appliances, in particular to a smart grid that integrates functions such as high-break small circuit breakers, small leakage circuit breakers, current, voltage, and leakage data collection and processing, and automatic reclosing. Terminal integrated protector. 2. Background technology [0002] At present, the small leakage circuit breaker and the small automatic reclosing leakage protection switch used in the low-voltage electrical equipment field in the known field of low-voltage electrical appliances all have functions such as overload, short circuit, overvoltage, undervoltage, leakage protection and one-time automatic reclosing, but, These small terminal modular protective devices do not have intelligent functions such as adjustable leakage action value, adjustable over-current action value, current and voltage leakage display, et...

AI Technical Summary

Problems solved by technology

[0002] At present, the small leakage circuit breaker and the small automatic reclosing leakage protection switch used in the low-voltage electrical equipment field in the known field of low-voltage electrical appliances all have functions such as overload, short circuit, overvoltage, undervoltage, leakage protection and one-time automatic reclosing, but, These small terminal modular protective devices do not have intelligent functions such as adjustable leakage action value, adjustable over-current action value, current and voltage leakage display, etc., nor do they have three times automatic reclosing and telemetry, remote communication, remote control, and remote adjustment. Intelligent and networked management functions of low-voltage power grid terminals

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