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Optimum control method of three operating devices

A technology for operating equipment and optimal control, applied in the direction of comprehensive factory control, comprehensive factory control, electrical program control, etc., can solve problems that affect the safe and stable operation of the system, the interlock logic is not too comprehensive, and reduce the degree of system automation, etc., to achieve Improve utilization efficiency and work efficiency, avoid chain errors, and reduce human resource consumption

Active Publication Date: 2013-09-25
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the current systems only consider the actual working conditions of "dual use and one backup", often ignoring how to protect the system when the outlet main pipe pressure is low or the outlet pressure of each operating equipment is low, and "one use and two backups" under light load conditions "The actual operating conditions, even if considered, the interlocking logic of the entire system is not too comprehensive, or the logic relationship is very cumbersome and complicated. In different control systems, it is often due to factors such as the execution time or execution cycle of the function block. , and affect the accuracy of the results, resulting in the failure of the connection between devices or misconnecting other devices in actual operation, and even causing the system to trip, or direct manual operation, etc., not causing inefficiency and wasting resources. , which affects the safe and stable operation of the entire system and greatly reduces the degree of system automation

Method used

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  • Optimum control method of three operating devices
  • Optimum control method of three operating devices
  • Optimum control method of three operating devices

Examples

Experimental program
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Effect test

Embodiment 1

[0047] like figure 1 as shown, figure 1 It is a structural representation of the present invention. Which one of the three equipment is put into standby first, then which equipment is the priority standby equipment. If under the working condition of "one use and two standby", the equipment that is first chained to start is the priority standby equipment. If there is a problem with the priority standby equipment Or if the startup fails, another equipment put into standby will be started in chains.

Embodiment 2

[0049] like Figure 2a , Figure 2b , Figure 2c , Figure 2d as shown, Figure 2a-Figure 2d is an embodiment of the present invention. Figure 2a , Figure 2b , Figure 2c , Figure 2d What is realized is which equipment among the running equipment is put into priority for backup. and figure 1 The difference is that the selection is made according to the running time of the running equipment, that is, the selection of various time function blocks, which equipment has the shortest running time, and which equipment is the priority standby equipment. That is, the three devices can decide which one is the priority backup device according to the running time of the device. For example: the running time of device A is 100s, the running time of device B is 120s, and the running time of device C is 90s. Then when device A is running, the other two All equipments are put into standby, no matter which equipment is put into standby first, then the priority standby equipment is ...

Embodiment 3

[0052] like Figure 3-Figure 5 as shown, image 3 It is the chain logic block diagram to realize the first running equipment; Figure 4 It is the chain logic block diagram to realize the second running equipment; Figure 5 It is the chain logic block diagram to realize the third running equipment. image 3 , Figure 4 , Figure 5 What is considered is that all DCS control systems only design the outlet header pressure, and the outlet of each operating equipment has no design pressure, the interlocking control thinking relationship between each equipment in each system. The outlet main pipe pressure of the DCS control system is redefined to the fixed value 1 according to the actual system operating parameters, and the delay time is also redefined to the delay function block 1 according to the interlocking time under the actual working condition of the system.

[0053] figure 1 and image 3 , Figure 4 , Figure 5 Combining, it can realize which device is put into prior...

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Abstract

The invention belongs to the technical field of the optimum control strategy of systems of operating devices, and relates to an optimum control method of three operating devices, in particular to an operating method of the system containing three or less operating devices in normal operation conditions and other emergent operation conditions, and particularly in dangerous operation conditions or special operation conditions. The optimum control method of the three operating devices relates to the three operating devices and a DCS control system, comprises a control method of the system provided with three operating devices and a control method of the system provided with two operating devices. The optimum control method of the three operating devices can be applied to any DSC control system and a PLC control system. According to the control strategy, a corresponding operating scheme which is best in environment protection and energy conversation, safe and reliable is selected according to the actual operation conditions, manpower resource consumption is reduced, accidents such as chain faults among the devices in the system are avoided, an operating system high in efficiency and low in cost is achieved, the automation degree of the system is improved, economic cost is greatly reduced, and application prospect is wide.

Description

[0001] The present invention belongs to the technical field of optimal control strategies for operating equipment systems, and relates to an optimal control method for three operating equipments, especially in normal working conditions and other emergency working conditions for a system including three or less operating equipments. It is a relatively dangerous or special working condition or an operating method under special working conditions. Background technique [0002] A system including three operating equipment, for example: three oil supply pumps in the boiler fuel pump room system, three circulating water pumps in the circulating water system, three condensate delivery pumps in the condensate system, and many other systems, these are key systems , it must ensure its safe and stable operation. In normal heavy load conditions, two devices are generally in operation, and the other device is used as a backup. However, in the actual production and operation process, there a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 房国成徐岩张戟丁永允
Owner STATE GRID CORP OF CHINA
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