Method and device for detecting grounding of DCS input signal line

A technology of input signal and line grounding, which is applied in the field of communication, can solve problems such as safety production accidents, damage, and easy to leave hidden dangers of accidents, and achieve the effect of improving safe and stable operation and improving efficiency

Pending Publication Date: 2022-05-13
HUANENG HAINAN POWER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, when the unit equipment is overhauled, it is required to check the DCS input signal cables. However, the DCS has thousands of signal cables. can't be done inside
This also caused that only some important signal cables were inspected during maintenance, and the others had to be abandoned, which easily left hidden dangers of accidents.
If the input signal cable is grounded, in addition to measurement signal problems, it will also cause hidden dangers such as reduced reliability of the DCS system
It is more likely to enter strong electricity due to lightning strikes or electric welding, causing more serious damage and causing safety production accidents

Method used

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  • Method and device for detecting grounding of DCS input signal line
  • Method and device for detecting grounding of DCS input signal line
  • Method and device for detecting grounding of DCS input signal line

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Embodiment 1

[0029] According to an embodiment of the present invention, a method for detecting grounding of a DCS input signal line is provided, figure 2 is a schematic diagram of the device for detecting the grounding of the DCS input signal line according to the embodiment of the present invention, such as figure 2 As shown, the device for detecting the grounding of the DCS input signal line according to the embodiment of the present invention specifically includes:

[0030] The measurement module 20 is used to measure the ground voltage of the floating DC power supply in the DCS cabinet through a digital multimeter, and obtain the ground voltage value of the floating DC power supply; the measurement module 20 is specifically used to: set the DC voltage corresponding to the digital multimeter After the gear is set, connect the positive test lead of the digital multimeter to the positive pole of the power supply, and the negative test lead to the earth terminal to measure the ground vo...

Embodiment 2

[0040] An embodiment of the present invention provides a device for detecting the grounding of the DCS input signal line, such as image 3 As shown, it includes: a memory 30, a processor 32, and a computer program stored on the memory 30 and operable on the processing 32. When the computer program is executed by the processor 32, the method embodiment is implemented. described steps.

Embodiment 3

[0042] An embodiment of the present invention provides a computer-readable storage medium, where a program for realizing information transmission is stored on the computer-readable storage medium, and when the program is executed by the processor 32, the steps described in the method embodiments are implemented.

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Abstract

The embodiment of the invention provides a method and device for detecting grounding of a DCS input signal line, and the method comprises the steps: carrying out the measurement of the voltage to ground of a floating DC power supply in a DCS cabinet through a digital multimeter, and obtaining the voltage to ground value of the floating DC power supply; and judging the grounding condition of the input signal line according to the voltage-to-ground value of the floating direct-current power supply. According to the invention, whether all input signal lines using the power supply in each DCS cabinet are grounded or insulate poorly can be judged. According to the detection method, in the unit maintenance process, when insulation inspection needs to be carried out on the DCS input signal cable, batch rapid detection can be carried out, thousands of input signal lines in the DCS do not need to be removed one by one and then measured through an insulation meter, the efficiency of insulation inspection of the input signal cable can be greatly improved, and the cost is reduced. The situation that inspection cannot be carried out in time due to too many DCS input signal lines is effectively avoided.

Description

technical field [0001] This document relates to the field of communication technology, and in particular to a method and device for detecting grounding of a DCS input signal line. Background technique [0002] At present, industrial control systems mostly use DCS for production process control. In order to improve the anti-interference of DCS input and output signals, DCS signal power generally adopts floating 24V DC power supply. At the same time, in order to ensure the reliability of the signal, the insulation of the signal cable must meet the relevant requirements. Therefore, when the unit equipment is overhauled, it is required to check the DCS input signal cables. However, the DCS has thousands of signal cables. inside cannot be completed. When this has also caused overhaul, only part important signal cable is checked, and other can only abandon, and this also just is easy to stay hidden danger of accident. If the input signal cable is grounded, in addition to measu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
CPCG05B23/0256G05B2219/24065
Inventor 伍鼎好张晓王名政关洪亮陈人波
Owner HUANENG HAINAN POWER INC
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