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Switch control system and control method

A control system and switch technology, which is applied in the direction of program control and electrical program control in sequence/logic controllers, can solve problems such as large voltage drop in control loops, potential safety hazards of cables, and long cables, and achieve the effect of improving reliability

Inactive Publication Date: 2017-08-18
GUANGDONG DATANG INT CHAOZHOU POWER GENERATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the power supply switch is far away from the central control room, the cable is long and the voltage drop of the control circuit is large. When the closing / opening button is pressed in a remote place, the closing / opening of the switch cannot be realized within a certain period of time. Therefore, the traditional There are serious safety hazards in the cable loop

Method used

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  • Switch control system and control method
  • Switch control system and control method
  • Switch control system and control method

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Experimental program
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Embodiment 1

[0036] Such as Figure 1 to Figure 4 As shown, the present invention is a switch control system, the control system includes a switch input acquisition unit for collecting switch signals, a first switch connected with the switch input acquisition unit and used for converting the switch signals into optical signals The signal conversion unit is connected to at least one second signal conversion unit for converting the optical signal into a switch signal through an optical fiber cable, and controls the corresponding switch according to the switch signal obtained by the second signal conversion unit.

[0037] Specifically, the control system described in this embodiment first converts the switch signal to an optical signal unit through the switch signal, and converts it into an optical signal. The signal-to-switch signal unit converts the optical signal into a switch signal, thereby improving the accuracy of long-distance transmission of the switch and improving the long-distance...

Embodiment 2

[0058] Such as image 3 and Figure 4 As shown, the difference between this embodiment and the above-mentioned embodiment is that this embodiment also provides a control method using the control system of the above-mentioned embodiment, and the control method includes the following steps:

[0059] S1. The switching value input acquisition unit collects the switching value signal;

[0060] S2. The first signal conversion unit acquires the switch signal and correspondingly converts it into an optical signal;

[0061] S3. The corresponding second signal conversion unit acquires the optical signal and correspondingly converts it into a switch signal;

[0062] S4. Control the corresponding switch according to the switch signal.

[0063] Further, steps after step S4 are as follows:

[0064] S5. Obtain a feedback signal of the switch;

[0065] S6. Obtain the switch feedback signal detected by the detection unit, then convert the switch feedback signal, and transmit it through th...

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PUM

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Abstract

The invention discloses a switch control system and control method. The control system comprises a switching input acquisition unit for acquiring the switching signal, and a first signal conversion unit connected with the switching input acquisition unit, used for converting the switching signal to the optical signal, and connected with at least one second signal conversion unit for converting the optical signal to the switching signal via a fiber cable, and controls the corresponding switch according to the switching signal acquired by the second signal conversion unit. The switch control system solves the problem that the switch cannot be reliably and remotely controlled via a cable due to the long cable and the bad environment. The switching amount is converted into the optical signal, and the optical signal is remotely transmitted via the fiber cable, so that the reliability of the switching amount long-distance transmission is improved, the reliability of the switch long-distance closing / opening operation can be improved, and meanwhile, the risks of lightning and electromagnetic interference during the switching transmission can be eliminated.

Description

technical field [0001] The invention relates to the field of power generation, in particular to a switch control system and control method. Background technique [0002] At present, due to the operation of thermal power plants, in some special emergency situations, operators need to be in the central control room, through the control loop independent of the DCS system, to complete the plant power consumption in a short period of time, such as the belt motors of the coal conveying system. The remote emergency closing / opening operation of the equipment, according to the traditional method, needs to lay cables from each power supply switch to the central control room, install intermediate relays, and build complex hard-wiring circuits to achieve remote closing / opening of each switch. Operation function. [0003] However, because the power supply switch is far away from the central control room, the cable is long and the voltage drop of the control circuit is large. Often when ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/04
CPCG05B19/04
Inventor 田存仁王长庚王文欣周明文董立丽吴发宽郑慧聪
Owner GUANGDONG DATANG INT CHAOZHOU POWER GENERATION