CN-116466559-B - Identification method for master-slave working state of redundant controller of DCS (distributed control system)

CN116466559BCN 116466559 BCN116466559 BCN 116466559BCN-116466559-B

Abstract

The invention relates to the technical field of identification of working states of redundant controllers of a DCS (distributed control system), in particular to an identification method of master-slave working states of the redundant controllers of the DCS, which is characterized in that a master control paste and a slave control paste are designed, the master control paste is pasted on a controller clamping piece of the master control working states, the slave control paste is pasted on a controller clamping piece of the slave control working states, the matching relation between the controllers pasted with the master control paste or the slave control paste and corresponding controllers and operation state indicating lamps is observed, whether the master-slave redundancy switching occurs to the controllers or not is judged, and the fault types of the controllers are judged.

Inventors

YU JING
LIU WEI
YANG JUNFENG
ZHANG ZHEN
XING YUNLONG
XING HUI

Assignees

山东兖矿国际焦化有限公司

Dates

Publication Date: 20260512
Application Date: 20230316

Claims (1)

1. The identification method of the master-slave working state of the redundant controller of the DCS system is characterized by comprising the following steps: 1) Designing a master control paste and a slave control paste, wherein the master control paste is stuck to a controller clamping piece in a master control working state, and the slave control paste is stuck to a controller clamping piece in a slave control working state; 2) Observing the matching relation between the controller attached with the master control paste or the slave control paste and the corresponding controller running state indicator lamp, judging whether the controller has master-slave redundancy switching or not, and judging the fault type of the controller; 3) When the current running state indicator lamp of the controller attached with the master control paste is found to be in a master control working state during inspection, and the current running state indicator lamp of the controller attached with the slave control paste is found to be in a slave control working state, the group of controllers are directly judged that the master-slave redundancy switching does not occur, and the controllers run normally; 4) When the controller attached with the master control paste or the slave control paste is not matched with the corresponding controller running state indicator lamp during inspection, the master-slave redundancy switching between the same group of controllers is indicated, and the problems of the corresponding controllers or control systems need to be detected; When the inspection is carried out, the current running state indicator lamp of the controller attached with the master control paste is found to be in a slave control working state, the current running state indicator lamp of the controller attached with the slave control paste is found to be in a master control working state, and when other indications of the controller are normal, the group of controllers are directly judged to have the master-slave redundancy switching, the controller clamping piece attached with the master control paste has the fault or the power failure phenomenon, the root cause of the switching is inspected as soon as possible, the hidden danger of the system running is eliminated, and the influence range of the situation is that the field equipment and the normal monitoring are not influenced; When the inspection is carried out, the current running state indicator lamp of the controller attached with the master control paste is found to be in a master control working state, other running indicator lamps of the controller are normal, and when the current running indicator lamp of the controller attached with the slave control paste is reported wrong or is not on, the controller clamping piece attached with the slave control paste is directly judged to have faults or power failure, the group of controllers do not have master-slave redundancy switching, the root cause of the problem of the slave controllers is inspected as soon as possible, the hidden danger of system running is eliminated, and the influence range of the situation is that the field equipment and the normal monitoring are not influenced; When the inspection is carried out, the current running state indicator lamp of the controller attached with the master control paste is found to be in a master control working state, other indicator lamps of the controller are normal, and when the current running state indicator lamp of the controller attached with the slave control paste is in the master control working state, the group of controllers are directly judged not to have master-slave switching, and the problem is that the redundant module fails or a redundant communication line is in a problem, and the controller loses a redundant synchronization function, so that the influence range of the condition is that the field equipment and the normal monitoring are not influenced; When the inspection is carried out, the current running state indicator lamp of the controller attached with the master control paste is in a slave control working state, and when the current running state indicator lamp of the controller attached with the slave control paste is in the slave control working state, the influence range of the situation is that the control system has serious faults, the controller stops working, the production operation is seriously influenced, and the production needs to be recovered as soon as possible; When the inspection is carried out, the current running state indicator lamp of the controller attached with the master control paste is found to be in the slave control working state, but the running indicator lamp of the controller shows serious errors or is not lightened, and when the current running indicator lamp of the controller attached with the slave control paste is in the slave control working state, the influence range of the situation is that a serious fault occurs in a control system, the controller stops working, the production operation is seriously influenced, and the production needs to be recovered as soon as possible.

Description

Identification method for master-slave working state of redundant controller of DCS (distributed control system) Technical Field The invention relates to the technical field of identification of working states of redundant controllers of a DCS (distributed control system), in particular to an identification method of master-slave working states of the redundant controllers of the DCS. Background At present, a set of DCS system is provided with a main controller and a slave controller, the clamping pieces of the main controller and the slave controller are respectively provided with an LED screen and an indicator lamp, and in the maintenance process of a DCS system maintainer, the following two problems are found to exist: 1. The controller cabinet and the servers of the central control room are placed in different areas, and when a patrol personnel between the cabinets patrol the running state of the controller, whether the controller has master-slave switching cannot be determined only by the LED screen and the indicator lights on the controller clamping piece. 2. When any one of the controllers fails, the controllers fails accidentally or the controllers are in power failure or the controllers are in power oscillation, the patrol maintenance personnel cannot judge whether the master controller and the slave controller are switched according to the status indicator lamps of the field controllers at the first time, the fault clamping piece and the range of the fault influence cannot be accurately positioned, and serious barriers are formed for rapidly checking and processing the system problems, eliminating the hidden danger of system operation as soon as possible or recovering production as soon as possible. Therefore, a method for identifying the master-slave working state of the redundant controller of the DCS system needs to be designed, so that the problems that the master controller and the slave controller in the existing DCS system are inconvenient to judge whether master-slave redundant switching occurs or not and the fault analysis is slower are solved. Disclosure of Invention Aiming at the problems existing in the prior art, the invention aims to provide an identification method for master-slave working states of a redundant controller of a DCS system. The technical scheme adopted by the invention for solving the technical problems is that the identification method of the master-slave working state of the redundant controller of the DCS system comprises the following steps: 1) Designing a master control paste and a slave control paste, wherein the master control paste is stuck to a controller clamping piece in a master control working state, and the slave control paste is stuck to a controller clamping piece in a slave control working state; 2) Observing the matching relation between the controller attached with the master control paste or the slave control paste and the corresponding controller running state indicator lamp, judging whether the controller has master-slave redundancy switching or not, and judging the fault type of the controller; 3) When the current running state indicator lamp of the controller attached with the master control paste is found to be in a master control working state during inspection, and the current running state indicator lamp of the controller attached with the slave control paste is found to be in a slave control working state, the group of controllers can be directly judged that the master-slave redundancy switching does not occur, and the controllers run normally; 4) When the controller attached with the master control paste or the slave control paste is not matched with the corresponding controller running state indicator lamp during inspection, the master-slave redundancy switching between the same group of controllers is indicated, and the problems of the corresponding controllers or control systems need to be detected. Specifically, in the step 4), when the current running state indicator lamp of the controller attached with the master control paste is found to be in the slave control working state during inspection, and the current running state indicator lamp of the controller attached with the slave control paste is found to be in the master control working state, and when other indications of the controller are normal, the controller can directly judge that the group of controllers have the master-slave redundancy switching, the controller clamping piece attached with the master control paste has the fault or the power failure phenomenon, the root cause of the switching should be detected as soon as possible, the hidden danger of the system running is eliminated, and the influence scope of the situation is that the field equipment and the normal monitoring are not affected. Specifically, in the step 4), when the current running state indicator lamp of the controller attached with the 'master control' paste is found to be in the master control working