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Low-voltage phase modulation system

A phase modulation and low-voltage technology, applied in the direction of reducing multi-phase network asymmetry, multi-phase network elimination/reduction of asymmetry, electrical components, etc., can solve the problems of unbalanced operation of three-phase loads, etc., to ensure three-phase balance and The effect of safe operation, improving the quality of electricity consumption, and improving reliability

Pending Publication Date: 2021-11-16
GUIZHOU POWER GRID CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the problems of the above-mentioned existing three-phase load unbalanced operation, the present invention is proposed

Method used

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  • Low-voltage phase modulation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] refer to Figure 1-2 , provides a schematic diagram of the overall structure of a low-voltage phase modulation system, and a low-voltage phase modulation system includes a protection module 100, including a windproof cabinet 101, an air switch 102 arranged in the windproof cabinet 101, and connected to the air switch 102 respectively. The first line 103, the second line 104, and the third line 105; and the adjustment module 200, including the monitoring mechanism 201 that cooperates with the protection module 100 and the first line 103, the second line 104 that come out from the air switch 102, and The third line 105 is respectively connected to the single-pole three-throw switch 202, and the single-pole three-throw switch 202 is arranged in the windproof cabinet 101; the single-pole three-throw switch 202 is also connected with a protection circuit 203; the monitoring mechanism 201 monitors the first line 103, The second circuit 104, and the load value of the 3rd circu...

Embodiment 2

[0034] refer to Figure 1-5, This embodiment is different from the first embodiment in that: the windproof cabinet 101 includes a cabinet body 101a, a water diversion eaves 101b arranged on the cabinet body 101a, a windproof mechanism 300 arranged on one side of the cabinet body 101a, and a cabinet body The inlet 101c and the outlet 101d at the bottom of 101a, the height of the water diversion eaves 101b gradually decreases from the front to the back of the cabinet 101a, and the side of the cabinet is provided with an opening that cooperates with the windproof mechanism 300; The cavity 301, the connecting plate 302 fixedly connected to the top of the thin-walled cavity 301, the windproof cover 303 movably connected with the connecting plate 302, and the starting block 304 fixed on the side of the cabinet body 101a to cooperate with the windproof cover 303, the thin-walled cavity The outer side of 301 is provided with a fixed ring 305, the diameter of the fixed ring 305 is larg...

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Abstract

The invention discloses a low-voltage phase modulation system. A protection module comprises a windproof cabinet, an air switch arranged in the windproof cabinet, and a first line, a second line and a third line which are respectively connected with the air switch; and the adjusting module comprises a monitoring mechanism matched with the protection module and a single-pole three-throw knife switch connected with a first line, a second line and a third line from the air switch respectively, the single-pole three-throw knife switch is arranged in the windproof cabinet, the single-pole three-throw knife switch is also connected with a protection circuit, and the monitoring mechanism monitors the load values of the first line, the second line and the third line. When serious phase offset occurs, the cabinet door is opened, the air switch is pulled down, and the single-pole three-throw knife switch is reversely sent to the corresponding lowest phase, phase modulation including current verification of one position only needs 10 minutes, the operation is simple, manpower, time and resources are saved, the power supply reliability and the power utilization quality are improved, and three-phase balance and safe operation of the distribution transformer are ensured.

Description

technical field [0001] The invention relates to the technical field of low-voltage phase modulation, in particular to a low-voltage phase modulation system. Background technique [0002] In recent years, although the phase modulation of the three-phase unbalanced distribution transformer has been carried out by means of phase modulation, the situation of the balanced operation of the three-phase load is not optimistic, and the total amount of unbalanced load has been rising. The situation of balanced operation is also on the rise, resulting in low voltage and unsafe operation of distribution transformer single-phase overload. Contents of the invention [0003] The purpose of this section is to outline some aspects of embodiments of the invention and briefly describe some preferred embodiments. Some simplifications or omissions may be made in this section, as well as in the abstract and titles of this application, to avoid obscuring the purpose of this section, the abstrac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/26H05K5/02H05K5/06
CPCH02J3/26H05K5/0217H05K5/061Y02E40/50
Inventor 李义郭元萍马宗骏肖远奇卢人杰刘宁陈雪松刘丽罗琨李正新
Owner GUIZHOU POWER GRID CO LTD