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Middle-arranged-type high-voltage switch cabinet

A high-voltage switchgear, center-mounted technology, applied to substation/switchgear board/panel/desk, bus/line arrangement, substation/power distribution device shell, etc., can solve the problem of not being able to find equipment in time and increase the hidden danger of cabinet accidents , the thickness of the cabinet is large, etc., to achieve the effect of expanding the inspection channel and maintenance space, compact structure, and small size

Inactive Publication Date: 2013-01-30
MAINTENANCE BRANCH STATE GRID LIAONING ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And because the high-voltage cables, grounding switches, voltage transformers and current transformers are all arranged at the rear of the cabinet, the thickness of the cabinet is large, and the volume of the cabinet is also large, so the manufacturing cost is high and the floor space is large. , and the required room and the corresponding building area are also large; and because the high-voltage cables, grounding switches, voltage transformers and current transformers are all installed at the back of the cabinet, the high-voltage cabinet is in operation. Standing in front of the cabinet Operators cannot observe the operation of the equipment at the back of the cabinet, and cannot find equipment problems in time, thus increasing the hidden danger of accidents in the cabinet

Method used

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  • Middle-arranged-type high-voltage switch cabinet
  • Middle-arranged-type high-voltage switch cabinet
  • Middle-arranged-type high-voltage switch cabinet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] see figure 1 and figure 2 . The middle-mounted high-voltage switchgear of the present invention includes a metal cabinet 1 , a control instrument 2 and a circuit breaker 3 . The metal cabinet 1 is provided with a low-voltage room 1-1, a circuit breaker room 1-2, a bus room 1-3 and a cable room 1-4; the low-voltage room 1-1 is set at the upper front end of the metal cabinet 1, and the control instrument 2 Installed on the cabinet door of the low-voltage room. The circuit breaker chamber 1-2 is arranged in the middle part of the front end of the metal cabinet body 1, and the circuit breaker 3 is installed in the circuit breaker chamber 1-2, and an observation window 1-7 is opened on the cabinet door of the circuit breaker chamber 1-2. Behind the low-voltage room 1-1 and the circuit breaker room 1-2 is the busbar room 1-3. The busbar insulator 6 is installed in the busbar room 1-3, and the incoming busbar is fixed on the busbar insulator 6. The incoming busbar is conne...

Embodiment 2

[0023] see image 3 . The difference between embodiment 2 and embodiment 1 is that the place where the insulator 7 is installed on the top partition of the cable room 1-4 is the earthing switch 9 installed, and the insulator that the earthing switch 9 itself has is connected on the busbar 8. The operator can conveniently observe the working state of the high-voltage cable 4 and the opening and closing state of the grounding switch 9 through the observation windows 1-6 in front of the cabinet; conveniently perform electrical tests on the high-voltage cable 4 and the grounding switch 9 in front of the cabinet.

Embodiment 3

[0025] see Figure 4 . Embodiment 3 differs from Embodiment 1 and Embodiment 2 in that, in addition to the grounding switch 9 being installed in the cable room, a current transformer 10 and a voltage transformer 11 are also installed, and the current transformer 10 and the voltage transformer 11 are installed In the middle and back of the cable room 1-4; the high-voltage cable 4 is first connected in series with the current transformer 10 through the horizontal busbar 8, and then connected in parallel with the voltage transformer 11, and then connected to the lower contact of the circuit breaker room 1-2 box 3-1. Operators can conveniently observe the working status of high-voltage cables 4, current transformers 10, voltage transformers 11 and the opening and closing status of grounding switches 9 through observation windows 1-6 in front of the cabinet; 4 and electrical test of current transformer 10, voltage transformer 11 and grounding switch 9.

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Abstract

The invention relates to a middle-arranged-type high-voltage switch cabinet which is characterized in that after a busbar which is led out from a lower contact box of a circuit breaker room straightly runs downward for a distance, the busbar is connected with a longitudinal short busbar connected with a voltage transformer, a current transformer and a lightning arrester; a busbar on a line outgoing terminal of the current transformer bends forward after straightly running upward for a distance; the busbar which bends forward is fixed on an insulator; a wiring hole which is prepared for connecting a high-voltage cable is formed on the end part of the busbar; a line inlet of the high-voltage cable is formed on the middle part at the bottom of a cable room; and the an observation window is also formed on a cabinet door of the cable room. The middle-arranged-type high-voltage switch cabinet provided by the invention has the advantages that the thickness of the high-voltage cabinet with the same capacity can be reduced by 20%, raw materials of the cabinet are saved, and the manufacturing cost of the cabinet is saved; and running monitoring and electrical test of the cable, the current transformer, the voltage transformer and a grounding switch can be conveniently carried out before the cabinet by operators.

Description

technical field [0001] The invention relates to a high-voltage electric device, in particular to a middle-mounted high-voltage switchgear. Background technique [0002] At present, in the traditional middle-mounted high-voltage switchgear, the high-voltage cables, grounding switches, voltage transformers and current transformers are all arranged at the rear of the cabinet, which makes the rear of the cabinet relatively crowded, while the front of the cabinet has more remaining space. , so its structure is not reasonable. And because the high-voltage cables, grounding switches, voltage transformers and current transformers are all arranged at the rear of the cabinet, the thickness of the cabinet is large, and the volume of the cabinet is also large, so the manufacturing cost is high and the floor space is large. , and the required room and the corresponding building area are also large; and because the high-voltage cables, grounding switches, voltage transformers and current...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02B1/04H02B1/26H02B1/20
Inventor 毕疆刘立洋伊东阳张良何鑫任丹焦懿刘政郭永辉王婷婷李新婧
Owner MAINTENANCE BRANCH STATE GRID LIAONING ELECTRIC POWER
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