Man-machine interface system and distributed control system with power failure protection mechanism

Abstract

Provided is a man-machine interface system having a power loss protection mechanism, comprising: at least one UPS power source, at least one work server, a man-machine interaction server, a power loss protection server, and a terminal bus network consisting of at least one network switch. An external power source supplies power for each server in the man-machine interface system by means of the at least one UPS power source. Each server in the man-machine interface system is connected to the terminal bus network by means of a network cable, and the power loss protection server is connected with one or more UPS power sources by means of the network cable. A UPS power source management client used for performing power loss monitoring on the connected UPS power source is provided on the power loss protection server. When the power loss of the external power source is monitored, the power loss protection server performs a shutdown operation on each server in the man-machine interface system according to the current shutdown policy by means of the terminal bus network, and the current shutdown policy comprises the shutdown sequence and the wait time of the servers in the man-machine interface system.

Description

technical field [0001] The present disclosure generally relates to the field of power plants, and more particularly, to a human-machine interface system and a distributed control system for power plants with a power failure protection mechanism. Background technique [0002] For example, the Distributed Control System (DCS) produced by Siemens has been successfully used as a mature control system in many large-scale thermal power and nuclear power projects at home and abroad. figure 1 A schematic diagram of a standard distributed control system 1 is shown. Such as figure 1 As shown, the DCS system 1 includes a management terminal bus network 10 , a man-machine interface system 20 and a plant bus network 30 . The human-machine interface system 20 includes at least one job server and a terminal bus network 21 . The at least one working server is, for example, a data processing server (Processing Unit, PU) 22, a business server (Service Unit, SU) 23, an operating workstation...

AI Technical Summary

Problems solved by technology

However, in the man-machine interface system 20, because each server needs to be equipped with a dedicated UPS power supply, the cost of the system is greatly increased, and today, when the domestic DCS is making great strides, the cost will bring a decisive factor to the applicability of the product , especially in the application of some small and medium projects

[0007] In addition, since the UPS power supply has been working for a long time, if the UPS power supply itself is unstable, it is very likely that the operating system on the server cannot be triggered to automatically shut down

[0008] In addition, in this kind of man-machine interface system, after the external power supply is lost, the entire upper-layer network (for example, the terminal bus network) will lose power, thus completely losing the remote operation such as shutting down the server through the upper-layer network possibility of

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