Composite logic protection amplifying type mixed triggering power source for detecting power faults

Abstract

The invention discloses a logic protection amplification type hybrid trigging power source for a power system fault detection device. The logic protection amplification type hybrid trigging power source is mainly composed of a diode rectifier U, a nonlinear triggering circuit, a buffering crystal oscillator, a quartz crystal oscillator circuit and a power logic voltage stabilizing circuit, wherein the nonlinear triggering circuit is connected with the diode rectifier U, the buffering crystal oscillator and quartz crystal oscillator are connected with the nonlinear triggering circuit, and the power logic voltage stabilizing circuit is connected between the diode rectifier U and the nonlinear triggering circuit in series. The logic protection amplification type hybrid trigging power source is characterized in that a logic protection amplification circuit is further connected between the power logic voltage stabilizing circuit and the nonlinear triggering circuit in series. According to the logic protection amplification type hybrid trigging power source for the power system fault detection device, the power logic voltage stabilizing circuit and the nonlinear triggering circuit are creatively combined, the circuit structure is greatly simplified, the radio-frequency interference of the circuit and the external radio-frequency interference can be reduced, and thus the manufacturing cost and maintaining cost are greatly lowered.

Description

technical field [0001] The invention relates to a switching stabilized voltage power supply, in particular to a compound logic protection amplifying hybrid trigger power supply for electric fault detection. 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 developed greatly. Since the maintenance of the power system often involves voltage lines of hundreds of kilovolts or even millions of kilovolts, the maintenance lines are very long, so the power supply requirements for fault detection equipment are also very high. However, at present, the mobile power supply provided by the fault detection equipment has a large ripple coefficient, which not only produces radio frequency electromagnetic interference, but also has a complicated circuit structure, high maintenance and production costs, which largely limits The scope of use of fault detection equipment is not con...

AI Technical Summary

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 to provide a brand-new logical protection amplified hybrid trigger power supply for power system fault detection devices

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