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Intelligent switching control method and system of variable frequency speed regulation multi-load system

A technology of intelligent switching and frequency conversion speed regulation, which is applied in the direction of control system, AC motor control, electrical components, etc., can solve problems affecting production safety, equipment overage service, equipment overuse, etc., to improve production efficiency and production safety factor, The effect of improving safety production coefficient and avoiding safety hazards

Pending Publication Date: 2021-05-18
HARBIN YULONG AUTOMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The use time of each load is unreasonable, resulting in excessive use of individual equipment;
[0004] 2. The stagnation time of the standby equipment is too long, which leads to corrosion and aging inside the load;
[0005] 3. There is no early warning of the equipment life cycle, which leads to the overage of the equipment, and also leads to the failure of the spare equipment to be put into use in time
[0006] The above problems will not only lead to excessive use of some equipment in the frequency conversion speed regulation system, and some equipment will be too idle, but also affect production safety due to excessive use of equipment or overage service

Method used

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  • Intelligent switching control method and system of variable frequency speed regulation multi-load system
  • Intelligent switching control method and system of variable frequency speed regulation multi-load system

Examples

Experimental program
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Embodiment approach 1

[0039] Embodiment 1. The intelligent switching control method of a variable frequency speed regulation multi-load system described in this embodiment includes the following steps: monitoring and recording the total running time of each load in the system;

[0040] When the total running time of a certain load is close to the overhaul time limit of the load, an overdue warning message and a load replacement command are issued; the load replacement command includes information about the load to be replaced;

[0041] Monitor and record the current running time of each load in the system, and issue a load replacement command when the current running time of a certain load exceeds the rated continuous running time of the load;

[0042] When a "load replacement command" is detected, select a replaceable device for the load to be replaced as a backup device, and control the backup device to start, replace the load to be replaced to continue working, and control the replacement load to...

Embodiment approach 2

[0048] Embodiment 2. This embodiment is a further supplement to the intelligent switching control method of a variable frequency speed regulation multi-load system described in Embodiment 1. In this embodiment, a step is added: monitor and record the number of failures of each load;

[0049] And it is further defined that the method of selecting a replaceable device of the load to be replaced as the backup device is: selecting the device with the least number of failures among all the replaceable devices of the load to be replaced and which is in a stopped state as the backup device.

[0050] The number of failures of the load described in this embodiment refers to the cumulative sum of the number of failures that have occurred since the load was put into use for the first time, until the parameter is reset to zero after the load is replaced.

[0051] This embodiment defines the principle of selecting a backup device, that is, selecting a device with a small number of failures ...

Embodiment approach 3

[0052]Embodiment 3. This embodiment is a further supplement to the intelligent switching control method of a variable frequency speed regulation multi-load system described in Embodiment 1. In this embodiment, a step is added: monitor and record the number of inspections of each load;

[0053] And it is further defined that the method of selecting a replaceable device of the load to be replaced as the backup device is: selecting the device with the least number of inspections and in a stopped state among all the replaceable devices of the load to be replaced as the replacement device.

[0054] The number of overhauls of the load described in this embodiment refers to the sum of the number of times the load has been overhauled since it was put into use for the first time, and this parameter is reset to zero after the load is replaced.

[0055] This implementation mode limits the principle of selecting the backup equipment, that is, select the equipment with the fewest maintenanc...

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Abstract

The invention discloses an intelligent switching control method and system of a variable frequency speed regulation multi-load system, and relates to the technical field of industrial control. The problem caused by unreasonable use time of each load in the existing variable frequency speed regulation system is solved. The method comprises the following steps: monitoring and recording the total operation time of each load in the system; when the total operation time of a certain load is close to the maintenance time limit of the load, sending out use overdue early warning information and a load replacement command, wherein the load replacement command comprises information of a to-be-replaced load; monitoring and recording the current running time of each load in the system, and when the current running time of a certain load exceeds the rated continuous running time of the load, sending out a load replacement command; and when a load replacement command is detected, selecting a replaceable device of a to-be-replaced load as a standby device, and replacing the to-be-replaced load to continue working. The method has the advantage of being high in transplantation capacity and can be applied to variable frequency speed regulation multi-load systems of various technologies.

Description

technical field [0001] The invention relates to the technical field of industrial control, in particular to the control technology of a speed regulating system. Background technique [0002] In the process of modern industrial development, the application degree of frequency conversion speed regulation system in process production requirements is gradually increasing, and many control functions for frequency conversion speed regulation are derived from this. In order to meet production safety, the overall speed control system is usually equipped with a backup load, but in the long-term development, there have been some various problems, and the more serious problems mainly include the following categories: [0003] 1. The use time of each load is unreasonable, resulting in excessive use of individual equipment; [0004] 2. The stagnation time of the standby equipment is too long, which leads to corrosion and aging inside the load; [0005] 3. There is no early warning of t...

Claims

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Application Information

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IPC IPC(8): H02P27/04
CPCH02P27/04
Inventor 赵金晓孔维广潘峰
Owner HARBIN YULONG AUTOMATION
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