Direct current power supply insulation detection device and detection method

A DC power supply and detection device technology, applied in the field of measurement and testing, can solve the problems of high cost and large error, and achieve the effects of low cost, large measurement range and high measurement accuracy

Active Publication Date: 2014-12-03
深圳市奥特迅科技有限公司
View PDF8 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a low-cost, high-precision DC power supply i

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
  • Direct current power supply insulation detection device and detection method
  • Direct current power supply insulation detection device and detection method
  • Direct current power supply insulation detection device and detection method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0056] in figure 2 As shown in the logic diagram of the first embodiment of the DC power supply insulation detection device of the present invention, the DC power supply insulation detection device can be used to detect the insulation resistance of the DC bus to the ground, including the insulation resistance value of unipolar to ground and the insulation resistance of bipolar simultaneous grounding. value. The DC power detection device includes a pair of balanced bridge resistances (not shown), a pair of detection bridge resistances (not shown), a voltage detection module 10, a current detection module 20, and a calculation module 30. Among them, a pair of balanced bridge resistors are respectively fixedly connected between the DC positive and negative buses and the ground. A pair of detection bridge resistors are respectively connected between the DC positive and negative buses and the ground through corresponding switches. The voltage detection module 10 is used to detect ...

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 direct current power supply insulation detection device and detection method. The detection device includes a voltage detection module, a pair of balance bridge resistors, and a pair of detection bridge resistors, and also includes a current detection module used for detecting the sum of currents of the pair of balance bridge resistors during single-pole grounding insulation resistance value detection and detecting the sum of the currents of the pair of detection bridge resistors and current of each of the pair of detection bridge resistors during dual-pole grounding insulation resistance value detection; and a calculation module used for acquiring leakage current and calculating the single-pole grounding insulation resistance value according to grounding voltages of direct-current positive and negative buses and the acquired leakage current during single-pole grounding insulation resistance value detection, and acquiring leakage current and calculating the dual-pole grounding insulation resistance value according to the grounding voltages of the direct-current positive and negative buses and the acquired leakage current during dual-pole grounding insulation resistance value detection. By implementation of the technical scheme of the direct current power supply insulation detection device, the cost is low and the precision is high.

Description

technical field [0001] The invention relates to the field of measurement and testing, in particular to a DC power supply insulation detection device and detection method. Background technique [0002] In order to ensure the safe operation of the power system, the control and protection circuits of power plants and substations are powered by DC power. DC bus insulation degradation or DC bus grounding are common faults in DC power supply systems. Generally, when the DC bus is unipolarly grounded, it will not affect the normal operation of the system, but the grounding point must be found in time to eliminate the fault. Otherwise, when the two poles are grounded, serious accidents will occur. Therefore, it is necessary to grasp the insulation performance of the DC power system bus in time. The working principle of the current DC power supply insulation detection device popular on the market is: to detect the insulation resistance value of the DC bus to the ground, and to send...

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
IPC IPC(8): G01R31/02
Inventor 许昭德
Owner 深圳市奥特迅科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products