Comprehensive online monitoring device and method for switch cabinet

A monitoring device and switchgear technology, applied in the field of switchgear, can solve the problems of inconvenient maintenance and wiring, reduced electrical insulation strength, reduced safety of a comprehensive online monitoring device for switchgear, etc., and achieves the effect of improving the use effect.

Pending Publication Date: 2021-03-16
TONGLING POWER SUPPLY CO OF STATE GRID ANHUI ELECTRIC POWER CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are still deficiencies in the existing comprehensive on-line monitoring devices for switch cabinets. Most of the existing comprehensive on-line monitoring devices for switch cabinets use a single-door mechanism, and most of the internal electrical components of the comprehensive on-line monitoring device for switch cabinets have longitudinal depth. , which makes the switchgear comprehensive online monitoring device often inconvenient in maintenance or wiring, thereby reducing the use effect of the switchgear comprehensive online monitoring device; secondly, the switchgear comprehensive online monitoring device has electrical problems during long-term operation , thermal, chemical and abnormal conditions caused by insulation degradation, resulting in a reduction in electrical insulation strength, serious failure, and in recent years, many sudden equipment accidents and sometimes casualties caused by switch cabinets in the distribution network, many It is caused by the insulation problem of the equipment, thus reducing the safety of the use of the comprehensive on-line monitoring device of the switchgear

Method used

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  • Comprehensive online monitoring device and method for switch cabinet
  • Comprehensive online monitoring device and method for switch cabinet
  • Comprehensive online monitoring device and method for switch cabinet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] see Figure 1-4 , a comprehensive on-line monitoring device for switch cabinets, including an intelligent early warning mechanism 1, a base 6 is fixedly installed at the bottom of the intelligent early warning mechanism 1, a top plate 7 is fixedly installed on the top of the base 6 through a mounting column 5, and the front surface of the intelligent early warning mechanism 1 is respectively provided with row Wave signal collector 2, fault point distance finder 3 and partial discharge signal collector 4, the monitoring device also includes:

[0039] The lid closing mechanism includes plate one 11, plate two 12, plate three 14 and plate four 15, and plate one 11, plate two 12, plate three 14 and plate four 15 are all connected by rotating shafts. One side of the fourth 15 is socketed on the outer wall of the mounting column 5, and the inner surface walls of the second plate 12, the third plate 14 and the fourth plate 15 are all fixedly installed with the card 13 that is ...

Embodiment 2

[0043] see figure 1 and figure 2 , the top inner surface wall of the top plate 7 is connected with the plywood 10 through the rotation of the elastic reel 22, the electric telescopic rod 21 is fixedly installed on the inner surface wall of the top plate 7, and the output end of the electric telescopic rod 21 is fixedly connected with the cooling bin 20, and the inner cavity of the cooling bin 20 is fixed. The driving part 19 is installed, and the output end of the driving part 19 is connected to the fan blade through the drive shaft 17, the vertical end of the heat dissipation chamber 20 is fixedly installed on both sides, and the open end of the driving shaft 17 is connected to the scraper bar 16 through transmission, and The bottom of the scraper bar 16 abuts against the outer wall of the partition net, and the electric telescopic rod 21 is fixedly connected with the top plate 7 through an L-shaped mounting frame, which reserves a storage space for the cooling bin 20 .

[00...

Embodiment 3

[0047] see Figure 4 , a switchgear comprehensive on-line monitoring device, the method includes the following steps:

[0048] The system uses the traveling wave signal collector 2 to collect transient and transient traveling wave signals, and monitors and analyzes the insulation state of the cable according to the phenomenon that the insulation state of the cable after the transient grounding is closer to a permanent fault, so as to ensure the permanent grounding of the cable line The system can reliably warn before failure;

[0049] Using the voltage traveling wave and current traveling wave fault location technology of the fault point distance finder 3, and cooperate with the partial discharge signal collector 4 to realize the fault point distance measurement, and monitor the running status of each cable in real time, for the cable main insulation fault Carry out cable loop selection;

[0050] All signals will be transmitted to the intelligent early warning mechanism 1 th...

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PUM

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Abstract

The invention discloses a comprehensive online monitoring device and method for a switch cabinet. The switch cabinet comprehensive online monitoring device comprises an intelligent early warning mechanism, wherein a base is fixedly installed at the bottom part of the intelligent early warning mechanism, a top plate is fixedly installed at the top part of the base through an installation column, and the front end face of the intelligent early warning mechanism is provided with a traveling wave signal collector, a fault point range finder and a partial discharge signal collector. According to the comprehensive online monitoring device and the method, when in use, a fastener between mounting piece on the outer surface walls of a plate IV and a plate I is loosened, and the operation of a maininterface of the intelligent early warning mechanism can be carried out; and a plate II, a plate III and the plate IV can be wrenched in sequence from the left side to separate cards on the inner surface walls from the installation column, at the moment, a cover closing mechanism composed of the plate I, the plate II, the plate III and the plate IV can be separated from the intelligent early warning mechanism and integrated with the intelligent early warning mechanism, an operator can operate and overhaul the device from a proper position, and therefore the using effect of the comprehensive online monitoring device for the switch cabinet is improved.

Description

technical field [0001] The invention relates to the technical field of switch cabinets, in particular to a comprehensive on-line monitoring device and method for switch cabinets. Background technique [0002] The switch cabinet is a kind of electrical equipment. The outside line of the switch cabinet first enters the main control switch in the cabinet, and then enters the sub-control switch. Each branch is set according to its needs. Such as instruments, automatic controls, motor magnetic switches, various AC contactors, etc., some also have high-voltage room and low-voltage room switch cabinets, high-voltage busbars, such as power plants, etc. load shedding. [0003] At present, there are still deficiencies in the existing comprehensive on-line monitoring devices for switch cabinets. , which makes the switchgear comprehensive online monitoring device often inconvenient in maintenance or wiring, thereby reducing the use effect of the switchgear comprehensive online monitor...

Claims

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Application Information

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IPC IPC(8): G01R31/08G01R31/12H05K7/20
CPCG01R31/083G01R31/1272H05K7/20136
Inventor 朱德亮曾伟华韩少卫李传江章家其洪卫华
Owner TONGLING POWER SUPPLY CO OF STATE GRID ANHUI ELECTRIC POWER CO
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