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Multi-core insulation automatic detector and system

A multi-core and detector technology, applied in the field of power plants and substations, can solve the problems of error-prone and leakage, and the workload of measuring the insulation resistance of wire cores is huge, and achieve the effect of reducing the workload

Pending Publication Date: 2018-12-18
GUANGDONG POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this application is to provide a multi-core insulation automatic detector and system, which is used to effectively solve the problem of huge workload and easy errors in measuring the insulation resistance of wire cores

Method used

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  • Multi-core insulation automatic detector and system
  • Multi-core insulation automatic detector and system
  • Multi-core insulation automatic detector and system

Examples

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no. 1 example

[0048] Such as figure 1 As shown, the application provides a multi-core insulation automatic detector, including:

[0049] Processing unit 110, input switching circuit 120, measurement sampling circuit 130 and analog-to-digital conversion circuit 140, input switching circuit 120 is electrically connected to measurement sampling circuit 130, measurement sampling circuit 130 is electrically connected to analog-to-digital conversion circuit 140, and processing unit 110 is connected to The input switching circuit 120, the measurement sampling circuit 130 and the analog-to-digital conversion circuit 140 are electrically connected; the input switching circuit 120 is used to connect the cable terminal to the measurement sampling circuit 130; the measurement sampling circuit 130 is used to measure the line core and / or line The voltage signal and current signal between the core and the ground, and send it to the analog-to-digital conversion circuit 140; the analog-to-digital conversion...

no. 2 example

[0066] Such as Figure 4 As shown, the present embodiment provides a multi-core insulation automatic detection system, including an input switching device 150, a measurement sampling device 160, an analog-to-digital conversion device 170, and a processing device 180. The input switching device 150 is electrically connected to the measurement sampling device 160, The measurement sampling device 160 is electrically connected to the analog-to-digital conversion device 170, and the processing device 180 is electrically connected to the input switching device 150, the measurement sampling device 160, and the analog-to-digital conversion device 170 respectively; the input switching device 150 is used to connect the cable terminal to the measurement Sampling device 160; measurement sampling device 160, used to measure the voltage signal and current signal between the wire core and / or between the wire core and the ground, and transmit it to the analog-to-digital conversion device 170; ...

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Abstract

The application provides a multi-core insulation automatic detector and system. The multi-core insulation automatic detector comprises an input switching circuit, a measurement sampling circuit, an analog-to-digital conversion circuit and a processing unit, wherein the input switching circuit is electrically connected with the measurement sampling circuit; the measurement sampling circuit and theanalog-to-digital conversion circuit are electrically connected with each other; and the processing unit is electrically connected with the input switching circuit and the measurement sampling circuitrespectively. Through adoption of the multi-core insulation automatic detector designed by the application, the insulation resistance of a multi-core part can be detected automatically; cores under detection are prevented from missing; the workload of staff is reduced greatly; and security is ensured.

Description

technical field [0001] This application relates to the fields of power plants, substations, etc., and mainly relates to an automatic multi-core insulation tester and system. Background technique [0002] If the insulation of the secondary cable core of the substation does not meet the requirements, the accuracy of current sampling will be affected, and in severe cases, the control circuit will be abnormal and the protection will malfunction. The "Southern Power Grid Relay Protection Inspection Regulations" requires that a 1000V megohmmeter must be used to measure the insulation resistance of each circuit (core) to the ground and each circuit (core) before wiring the newly installed device screen cabinet, and the resistance values ​​are uniform. Should be greater than 10MΩ. [0003] However, during the on-site construction, it is difficult for the relay protection personnel to complete the whole process of side station acceptance. The brutal dragging during the cable laying ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
CPCG01R31/1272
Inventor 张建华郭志军李欧史盼盼
Owner GUANGDONG POWER GRID CO LTD
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