Direct-current power source loop short-circuit isolation module

Abstract

The invention relates to an isolation module, in particular to a direct-current power source loop short-circuit isolation module. The direct-current power source loop short-circuit isolation module comprises a right power conversion circuit, a left power conversion circuit, a right relay control circuit and a left relay control circuit; the right power conversion circuit is electrically connectedto the right relay control circuit, the right relay control circuit is electrically connected with the left relay control circuit, and the left relay control circuit is electrically connected with theleft power conversion circuit; each device in a loop is provided with a left direct-current power source loop short-circuit isolation module and a right direct-current power source loop short-circuitisolation module. When used in a direct-current power source loop power supply system, the direct-current power source loop short-circuit isolation module has the function of automatically isolatinga short-circuit fault happening to a power supply line; when the power supply line has a short-circuit fault, the circuit can automatically isolate a short-circuit area, so that normal work of other devices in the system is not affected.

Description

Technical field: [0001] The invention relates to an isolation module, in particular to a DC power loop short-circuit isolation module. Background technique: [0002] Modern short-circuit isolation technology is mainly used in short-circuit isolation of the bus to isolate the equipment in the short-circuit part to ensure the normal operation of other devices on the bus, and to facilitate the determination of the branch location of the bus failure. After the fault is eliminated, the isolated part can be automatically reconnected system. The design for the short-circuit isolation of the power supply is very weak. The power supply is the most basic and important part of the circuit system. A power short circuit fault can be devastating to the damage of a system. The invention adopts a symmetrical power conversion circuit and a relay control circuit to realize the short-circuit isolation of the power supply and ensure the normal operation of other devices in the DC loop. Inv...

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Problems solved by technology

The design of the short-circuit isolation of the power supply is very weak

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