Integrated Control System of Power Plant Based on Server Structure

Abstract

The invention relates to a server structure-based power plant integrated control system, which comprises a unit plant DCS operator station, a unit plant DCS server, a unit plant DCS control system, a switch, an auxiliary workshop operator station, an auxiliary workshop server, and an auxiliary workshop PLC control system with the same configuration and the same monitoring system as the unit plant DCS control system, wherein the unit plant DCS operator station, the unit plant DCS server, the auxiliary workshop operator station and the auxiliary workshop server are all connected with the switch; the unit plant DCS control system is connected with the unit plant DCS server; and the auxiliary workshop PLC control system is connected with the auxiliary workshop server. The cost of the power plant integrated control system is reduced, the engineering period is shortened, and sharing of control information is realized.

Description

technical field [0001] The invention relates to the technical field of control system integration, in particular to an integrated control system of a power plant based on a server structure. Background technique [0002] The integration of power plant control system is the current development trend, but many problems have been encountered in the process of implementation, which has caused certain difficulties in design and construction. At present, there are mainly two schemes to realize the integration of power plant control system: [0003] Option 1: The unit unit equipment is controlled by an independent DCS (Distribute Control System, decentralized control system), and the auxiliary workshop is controlled by an independent PLC (Programmable Logic Controller, programmable logic controller) control system. The process equipment is packaged and purchased. The disadvantage of this method is that the protocols of multiple control systems are different, the degree of informa...

AI Technical Summary

Problems solved by technology

Although this solution can realize the integrated control of the power plant, the cost is too high. The main reasons are as follows: Due to the single supply of DCS equipment, if the DCS equipment in the auxiliary workshop control system is supplied with the equipment by the auxiliary workshop equipment supplier, then Will cause the price of control system equipment to be too high

If the DCS equipment of the auxiliary workshop control system and the DCS equipment of the unit unit control system are purchased together, the price will be relatively lower. However, due to the inconsistent design and construction progress of each control system, the DCS equipment must be purchased according to the progress of the system that was first put into use.

In general, the boiler feed water system in a power plant needs to be put into use at the earliest, so DCS equipment must be purchased according to the progress of the boiler feed water system, which will lead to inaccurate estimation of the I / O points of many systems, which may lead to inconsistencies with the final construction drawings , causing waste or increasing the cost of equipment procurement

In addition, due to the single supply of DCS equipment, after the power plant is put into operation, the purchase price of spare parts is also extremely high

It can be seen that, if the integrated control of the power plant is adopted in the second scheme, the cost will be relatively high and waste will easily be generated.

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