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Three-phase mechanical interlocking phase modulation meter box

A mechanical interlocking, three-phase technology, applied in electrical components, electrical switches, cooling/ventilation of substations/switchgears, etc. The effect of reducing the risk of phase operation, improving the reliability of power supply, and shortening the recovery time

Active Publication Date: 2019-02-01
CHUZHOU POWER SUPPLY CO OF STATE GRID ANHUI ELECTRIC POWER CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional manual phase modulation method has a long adjustment period and poor effect, causing unnecessary power outages, and the operation is relatively difficult, wasting a lot of unnecessary manpower and time, and urgently needs to be automated.
Although the capacitive three-phase load automatic adjustment device and the power electronic three-phase load automatic adjustment device can effectively and quickly adjust the three-phase current and ensure the balance of the three-phase current on the low-voltage outlet side of the transformer, they cannot fundamentally solve the problem of actual load balance distribution. Symptoms, not root cause

Method used

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  • Three-phase mechanical interlocking phase modulation meter box
  • Three-phase mechanical interlocking phase modulation meter box
  • Three-phase mechanical interlocking phase modulation meter box

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] see Figure 1-4 : a kind of three-phase mechanical interlock phase modulation meter box of the present embodiment, comprises cabinet body 1, and three-phase mechanical interlock phase modulation switch 2 is installed on the inner upper side of described cabinet body 1, and described three-phase mechanical interlock phase modulation switch 2 The phase switch 2 includes an air switch 21, an interlocking panel 24, a slide rail guide plate 25, and a lock tongue 26; The screw 211 is fixedly installed between them, and the screw 211 extends downward, and the installation part of the screw 211 extends to the rear end of the fixing seat. The air switch 21 is three fixedly installed side by side in sequence, and two adjacent air switches 21 The fronts of each of the interlocking panels 24 are fixedly connected, each of the interlocking panels 24 is fixed with a slide rail guide plate 25 on the front, and a horizontal through hole 214 is provided between the slide rail guide plat...

Embodiment 2

[0024] A three-phase mechanical interlocking phase modulation meter box of this embodiment has basically the same structure as that of Embodiment 1, the main difference being that: a C45 switch 11 is installed on the left side of the protective grounding 12, and above the C45 switch 11 Two rows of watt-hour meter brackets 9 are installed, and each row of watt-hour meter brackets 9 includes two watt-hour meter brackets 9, and the watt-hour meter bracket 9 includes a vertical adjustment plate 91, a left lateral support plate 92 and a right lateral Support plate 93; the vertical adjustment plate 91 includes an adjustment hole 94 in the vertical direction, and the connection ends of the left transverse support plate 92 and the right transverse support plate 93 are fixedly installed by mutual dislocation through bolts, and the bolts are stuck in In the adjustment hole 94, the rear end is fixed with a nut, and the outer ends on both sides of the left transverse support plate 92 and t...

Embodiment 3

[0026] The structure of the three-phase mechanical interlocking phase modulation meter box of this embodiment is basically the same as that of Embodiment 1, the main difference is that the copper bar 3 is a rounded copper bar to avoid tip discharge.

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Abstract

The invention discloses a three-phase mechanical interlocking phase modulation meter box comprising a cabinet body. A three-phase mechanical interlock phase switch is installed at the upper side inside the cabinet body; a copper bar is installed at the lower side of the three-phase mechanical interlock phase switch; a current transformer is installed at the copper bar and a wiring terminal strip is installed at the tail end of the copper bar; a zero bar is installed at the right side of the terminal strip; and an ampere meter is installed below the zero bar. Since the three-phase mechanical interlock phase switch is installed inside the cabinet body, the interphase short circuit caused by the simultaneous turning off of the two phases of switches is prevented effectively; the current transformer and the ampere meter are installed inside the cabinet body and thus a load current value is checked conveniently through a current observation window at the cabinet body side door, thereby providing the important data support for the phase. The load power supply source phase switching is completed only by operating the air switch for opening or closing, so that the power restoring time is shortened, the reliability of the power supply is improved, the phase adjustment operation risk is reduced, and the safety is enhanced.

Description

technical field [0001] The invention relates to a phase modulation device, in particular to a three-phase mechanical interlocking phase modulation meter box. Background technique [0002] The traditional manual phase adjustment method has a long adjustment period and poor effect, causing unnecessary power outages, and the operation is relatively difficult, which wastes a lot of unnecessary manpower and time, so it is urgent to carry out automation transformation. Although the capacitive three-phase load automatic adjustment device and the power electronic three-phase load automatic adjustment device can effectively and quickly adjust the three-phase current and ensure the balance of the three-phase current on the low-voltage outlet side of the transformer, they cannot fundamentally solve the problem of actual load balance distribution. Treat the symptoms but not the root cause. [0003] Accordingly, there is an urgent need for a three-phase mechanical interlocking phase-mod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02B1/48H02B1/56H01H9/26
CPCH02B1/48H02B1/565H01H9/26H01H2009/265Y02E40/50
Inventor 李登峰白涧陈锋王义李金华岳诚黄寅于同飞许伟周鹏贝忠利
Owner CHUZHOU POWER SUPPLY CO OF STATE GRID ANHUI ELECTRIC POWER CORP