Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Constant current double buffer trigger-type driving power supply for power system fault detecting device

A fault detection and power system technology, applied in control/regulation systems, output power conversion devices, electrical components, etc., can solve problems such as power supply electromagnetic interference, working current cannot maintain a constant value, etc., to avoid current fluctuations and reduce production costs and maintenance cost reduction, the effect of a wide range of use

Inactive Publication Date: 2015-08-26
CHENGDU CHUANGTU TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defect that the current power supply for fault detection equipment is susceptible to electromagnetic interference, resulting in the inability to maintain a constant value of its working current, and to provide a constant-current double-buffer trigger-type drive power supply for power system fault detection devices

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Constant current double buffer trigger-type driving power supply for power system fault detecting device
  • Constant current double buffer trigger-type driving power supply for power system fault detecting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0019] Such as figure 1 As shown, the present invention consists of a diode rectifier U, a nonlinear trigger circuit connected with the diode rectifier U, a double-buffered quartz crystal oscillator circuit connected with the nonlinear trigger circuit, and a series connection between the diode rectifier U and the nonlinear trigger circuit Between the power logic regulator circuit. In order to achieve the effect of the present invention, a constant current circuit is connected in series between the power logic voltage stabilizing circuit and the nonlinear trigger circuit in the present invention.

[0020] Among them, the constant current circuit such as figure 2 As shown, it includes operational amplifier P2, operational amplifier P3, field effect transistor MOS1, field effect transistor MOS2, field effect transistor MOS3, triode Q3, and triode Q4.

[0021] In order to achieve the expected effect, the constant current circuit also includes a resistor R12 with one end connect...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a double-buffering trigger type driving power source for a power system fault detecting device. The double-buffering trigger type driving power source mainly comprises a diode rectifier U and a nonlinear trigger circuit. The nonlinear trigger circuit is connected with the diode rectifier U. The double-buffering trigger type driving power source is characterized by further comprising a double-buffering quartz crystal oscillator circuit and a power logic voltage stabilizing circuit; the double-buffering quartz crystal oscillator circuit is connected with the nonlinear trigger circuit, and the power logic voltage stabilizing circuit is arranged between the diode rectifier U and the nonlinear trigger circuit in a serial connection manner; the power logic voltage stabilizing circuit comprises a power amplifier P1, an AND-NOT gate IC1, an AND-NOT IC2, an AND-NOT IC3, an AND-NOT IC4 and the like. The double-buffering trigger type driving power source has the advantages that the power logic voltage stabilizing circuit and the nonlinear trigger circuit are creatively combined with each other, accordingly, circuit structures can be greatly simplified, radio frequency interference of the circuits and external radio frequency interference can be reduced, and the manufacturing cost and the maintaining cost can be greatly lowered.

Description

technical field [0001] The invention relates to a switch stabilized voltage power supply, in particular to a constant-current double-buffer trigger-type driving power supply for a 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 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 relatively large defect, that is, it is susceptible to electromagnetic interference, causing its working current to be unable to maintain a constant value, thus affecting the detection effect of the fault detection equipment to a large extent. , un...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/156H02M1/44
CPCH02M7/217H03B5/36
Inventor 周云扬
Owner CHENGDU CHUANGTU TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products