Novel power supply for logic protection amplification type power system fault detection device

Abstract

The invention discloses a novel power supply for a logic protection amplification type power system fault detection device. The novel supply for the logic protection amplification type power system fault detection device mainly consists of a transformer diode trigger circuit, a primary crystal oscillator circuit, a secondary crystal oscillator circuit and a power logic control circuit connected with the transformer diode trigger circuit, wherein the primary crystal oscillator circuit and the secondary crystal oscillator circuit are connected with the transformer diode trigger circuit. The transformer diode trigger circuit consists of a diode rectifier U, a transformer T and a trigger circuit, wherein the primary crystal oscillator circuit and the secondary crystal oscillator circuit are both connected with the trigger circuit. The novel power supply is characterized in that a logic protection amplification circuit is further connected between the transformer T and the power logic control circuit in series. A circuit structure can be greatly simplified, and radio-frequency interference of the circuits and external radio-frequency interference are reduced, so that the manufacturing cost and maintenance cost are remarkably reduced. In addition, the novel power supply can further effectively overcome the delayed effect of a traditional power supply circuit, and the quality of the power supply can be effectively improved.

Description

Technical field [0001] The invention relates to a switching stabilized power supply, in particular to a power supply for a novel logic protection amplifying power system fault detection device. Background technique [0002] At present, with the rapid development of the power industry, the equipment that people use for power system fault detection has also greatly developed. Since the overhaul of the power system often involves several hundreds of kilovolts or even millions of kilovolts of voltage lines, the maintenance lines are very long, so the power supply requirements for the fault detection equipment are also very high. However, the current mobile power supply provided by the fault detection equipment has a relatively large ripple coefficient, which not only produces radio frequency electromagnetic interference, but also has a relatively complex circuit structure, high maintenance and production costs, which limits it to a large extent. The scope of use of fault detection e...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of large ripple coefficient, serious radio frequency interference, complex circuit and low efficiency existing in the current power supply for fault detection equipment, and provide a new type of power supply for logic protection amplified power system fault detection device

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