A self-adaptive control method for a pressure maintenance system

Abstract

An adaptive control method for a pressure maintenance system, the control system involved includes a plurality of fixed-frequency oil pumps or air compressors with different models and specifications as pressure maintenance equipment, and also includes pressure vessels, non-pressure vessels, and pressure vessels through pressure maintenance. The device is connected to a pressure-free container. The pressure vessel is provided with a first sensor, and the pressureless vessel is provided with a second sensor. Both the first and second sensors and the pressure maintaining equipment are connected to the controller, and the controller is connected to the human-computer interaction device. The invention can solve the mismatch between the random consumption load with a long change period of the pressure maintenance system and the output power of the pressure maintenance equipment, that is, the mismatch between the decreasing speed of the system pressure due to the random consumption with a long change period and the pressurization capacity of the pressure maintenance equipment If the pressure maintenance equipment is frequently started and stopped or loaded and unloaded, the wear and tear of the original equipment will increase, which will affect the life of the pressure maintenance equipment, cause energy loss, and affect the energy efficiency and economy of the system.

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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