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An intelligent DC insulation on-line monitoring device with grounding positioning function

A technology of DC insulation and monitoring device, applied in fault location, testing dielectric strength and other directions, can solve the problem of single function of DC system insulation monitoring device, and achieve the effect of improving safety and efficiency

Active Publication Date: 2022-03-29
HUZHOU ELECTRIC POWER SUPPLY CO OF STATE GRID ZHEJIANG ELECTRIC POWER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the single-function technical problem of the DC system insulation monitoring device

Method used

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  • An intelligent DC insulation on-line monitoring device with grounding positioning function
  • An intelligent DC insulation on-line monitoring device with grounding positioning function
  • An intelligent DC insulation on-line monitoring device with grounding positioning function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] An intelligent DC insulation online monitoring device with a grounding location function, such as figure 1 As shown, this embodiment includes a housing, a bus insulation online detection module 100, a positioning signal generation module 200, a positioning signal detection module 300, a grounding branch detection module 600, a controller 400, a grounding positioning button 500, an alarm indication module 700 and The upper computer communication interface 800, the bus insulation online detection module 100, the positioning signal generation module 200, the positioning signal detection module 300, the grounding branch detection module 600 and the controller 400 are all installed in the housing, and the alarm indication module 700 and the upper computer communication interface 800 are all installed on the shell, the busbar insulation on-line detection module 100 is connected with the positive busbar +KM and the negative busbar -KM to detect the insulation of the positive bu...

Embodiment 2

[0036] This embodiment is further improved on the basis of the first embodiment. Such as Figure 6 As shown, this embodiment also includes an automatic resistance adjustment device. Both the trimmer resistor R31 and the trimmer resistor R32 are knob-type adjustable resistors. The trimmer resistor R31 and the trimmer resistor R32 are fixed and installed side by side in the housing. Plate 105, driving spring 108, compression spring 106, compression block 107, resistance switch K8 and electronic switch K9, the knobs of trimming resistor R31 and trimming resistor R32 abut against the opposite side surfaces of driving board 105 respectively, and the two sides of driving board 105 The side has a rubber anti-slip mosaic layer, the drive plate 105 is movably clamped on the housing, the pressing block 107 is movably clamped with the housing, the stroke of the pressing block 107 is perpendicular to the stroke direction of the drive plate 105, and one end of the drive plate 105 is connec...

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Abstract

The invention relates to the technical field of power system operation and maintenance, in particular to an intelligent DC insulation on-line monitoring device with a grounding and positioning function, including a housing, a bus insulation on-line detection module, a positioning signal generation module, a positioning signal detection module, and a grounding branch detection Module, controller, ground positioning button, alarm indication module and upper computer communication interface, to detect the insulation of the positive busbar +KM and negative busbar-KM, the positioning signal generation module generates low-frequency AC signals, and the positioning signal detection module detects the positioning signal generation module The voltage signal at the connection point with the positive busbar +KM and the negative busbar-KM, and the grounding branch detection module detects the AC voltage signal of each branch. The substantive effect of the present invention is: realizing one-key change from bus insulation on-line detection to grounding branch location detection, improving the efficiency of bus insulation detection and improving the safety of the DC system.

Description

technical field [0001] The invention relates to the technical field of power system operation and maintenance, in particular to an intelligent DC insulation online monitoring device with a grounding and positioning function. Background technique [0002] The operation of relay protection, automatic devices, signaling devices, emergency lighting and electrical equipment in power systems generally depends on DC power supply. The output quality and reliability of DC power supply are directly related to the safe and reliable production of various electrical equipment. Therefore, it is necessary to ensure the stable and reliable operation of the DC power supply in the power system. The DC power supply in the power system is composed of storage batteries, charging equipment or DC screens and other equipment. The most common fault of the DC power supply is the busbar ground fault. When a small ground fault occurs in the DC system, there are usually no immediate harmful consequenc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/08G01R31/12
CPCG01R31/08G01R31/12
Inventor 徐刚周安仁蒋中海黄海棠姜涛朱亮张兵戴有根范津津王晟张冰叶建锋
Owner HUZHOU ELECTRIC POWER SUPPLY CO OF STATE GRID ZHEJIANG ELECTRIC POWER CO LTD
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