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Electronic three-phase alternating current loop full-automatic phase switcher

A three-phase AC, fully automatic technology, applied in the direction of instruments, simulators, computer control, etc., can solve the problems of tedious and repetitive work, time-consuming and manpower-consuming, hindering the automation and intelligent evolution of secondary production instruments and meters, and achieve Efforts to reduce workload and improve automation

Inactive Publication Date: 2021-02-23
STATE GRID TIANJIN ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The AC circuit detection test in the secondary acceptance stage of the substation is a cumbersome process. The main reason for the tediousness is that in the work of point polarity, DC resistance measurement, and shaking insulation, it is necessary to manually switch each circuit repeatedly and select 2 circuits one by one. , that is, select two phases (such as two phases B and C) from the four phases A, B, C, and N of the three-phase four-wire system. This kind of repetitive manual switching of the working nature of each circuit requires a lot of tedious and repetitive work, which is extremely time-consuming. time and manpower
Due to the large number of AC circuit connections, including protection, backup, fault recording, measurement and control, and watt-hour meters, the workload of manual switching of a large number of A, B, C, and N AC lines during the acceptance process is huge, which hinders the secondary production of instruments and meters The evolution of automation and intelligence

Method used

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  • Electronic three-phase alternating current loop full-automatic phase switcher
  • Electronic three-phase alternating current loop full-automatic phase switcher
  • Electronic three-phase alternating current loop full-automatic phase switcher

Examples

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Embodiment 1

[0026] combine Figure 1 to Figure 3 , the present invention provides an electronic three-phase AC circuit fully automatic phase difference switcher, comprising:

[0027] command control module and commutation module;

[0028] The phase change module is used to receive the phase change command from the command control module

[0029] The phase commutation module includes a relay group, and the relay group includes a first relay, a second relay, a third relay, a fourth relay, a fifth relay, a sixth relay, a seventh relay and an eighth relay;

[0030] Contacts on one side of the first relay, the second relay, the third relay, and the fourth relay are connected to the first output port, and the fifth relay, the sixth relay, and the first relay The contacts on one side of the seventh relay and the eighth relay are connected to the second output port;

[0031] The contact on the other side of the first relay and the contact on the other side of the fifth relay are connected to a...

Embodiment 2

[0038] Embodiment 2 of the present invention explains the working principle of an electronic three-phase AC circuit full-automatic phase difference switcher provided in Embodiment 1;

[0039] There are 4 inlets (A, B, C, N) and 2 outlets (I, II) in the fully automatic phase difference switcher of the AC circuit. The function is to connect the A, B, C, N AC lines connected to the 4 inlets. , conduct two branches successively, and pass through the first output port ( image 3 Shown in I) and the second output port ( image 3 shown in II) output; the instruction control module includes single-chip microcomputer (such as GD32F130C8T6), amplifier and other devices.

[0040] Further, by burning the C++ program in the single-chip microcomputer, the connected A, B, C, and N are calculated to realize the automatic phase commutation function. The outlet of the single-chip microcomputer is connected to the amplifier for amplification, and the amplified signal is connected to the relay ...

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Abstract

The invention provides an electronic three-phase alternating current loop full-automatic phase switcher. The full-automatic phase switcher comprises an instruction control module and a phase change module, and the phase change module is used for receiving the phase change instruction of the instruction control module. Through the electronic three-phase alternating current loop full-automatic phaseswitcher provided by the invention, the workload of workers can be reduced, and a physical foundation is laid for improving the automation degree of secondary equipment.

Description

technical field [0001] The invention relates to the technical field of automatic phase commutation of A, B, C and N secondary AC circuits of a three-phase four-wire system, in particular to an electronic three-phase AC circuit fully automatic phase-differential switcher. Background technique [0002] The AC circuit detection test in the secondary acceptance stage of the substation is a cumbersome process. The main reason for the tediousness is that in the work of point polarity, DC resistance measurement, and shaking insulation, it is necessary to manually switch each circuit repeatedly and select 2 circuits one by one. , that is, select two phases (such as two phases B and C) from the four phases A, B, C, and N of the three-phase four-wire system. This kind of repetitive manual switching of the working nature of each circuit requires a lot of tedious and repetitive work, which is extremely time-consuming. time and manpower. Due to the large number of AC circuit connections...

Claims

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Application Information

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IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/24215
Inventor 甄国栋殷学功王耘谢丹张昌钦张清华王琛弘李晶郭林轩宋朝霞兰岚宋平王继隆梁嘉娣
Owner STATE GRID TIANJIN ELECTRIC POWER
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