Self-adaptive control method of pressure maintaining system

Abstract

The invention relates to a self-adaptive control method of a pressure maintaining system, the related control system comprises a plurality of fixed-frequency oil pumps or air compressors with different models and specifications as pressure maintaining equipment, the system also comprises a pressure container and a non-pressure container, and the pressure container is connected with the non-pressure container through the pressure maintaining equipment. The pressure container is provided with a first sensor, and the non-pressure container is provided with a second sensor. The first sensor, the second sensor and the pressure maintaining device are connected with the controller, and the controller is connected with a man-machine interaction device. According to the invention, the problem that the random consumption load with a long change period of the pressure maintaining system is not matched with the output power of the pressure maintaining equipment, that is, the pressure maintaining equipment is frequently started, stopped or loaded and unloaded due to the fact that the speed of random consumption reduction with a long change period of the system pressure is not matched with the pressurizing capacity of the pressure maintaining equipment, then abrasion consumption of original parts of equipment is increased, the service life of pressure maintaining equipment is affected, energy loss is caused, and system energy efficiency and economy are affected can be solved.

Description

technical field [0001] The invention belongs to the field of industrial control, and in particular relates to an adaptive control method for a pressure maintenance system. Background technique [0002] In industrial control, there are many applications that require a pressure maintenance system. For example, the governor of a hydro-generator set adjusts the opening of the guide vane, the power and frequency of the unit, and the hydraulic system of the governor is required; Medium and low pressure air systems are required for positive pressure systems, governor pressure oil tanks, air brake mechanical braking systems and other occasions. The governor hydraulic system and the medium and low pressure air system are typical pressure maintenance systems. The pressure maintenance system is usually designed with multiple fixed-frequency oil pumps or air compressors of the same model and specification as the pressure maintenance equipment, but since the pressure maintenance system ...

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Problems solved by technology

[0003] In order to solve the above technical problems, the present invention provides an adaptive control method for a pressure maintenance system, which aims to solve the mismatch between the steady-state fixed consumption load and the output power of the pressure maintenance equipment and the random consumption load and the output power of the pressure maintenance equipment with a long change period Mismatch, that is, the system pressure is caused by the mismatch between the steady-state fixed and long-term random consumption decline rate and the pressure-maintaining equipment's pressurization capacity. The pressure-maintaining equipment is frequently started and stopped or loaded and unloaded, and the wear and tear of the original equipment is intensified. , affect the pressure to maintain the life of the equipment, and at the same time lead to energy loss, affecting the energy efficiency and economy of the system and other issues

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