Control method and system for maintenance-free dehumidifier
A control method and technology for a control system, applied in the field of transformer systems, can solve problems such as excessive air humidity, high micro-water content in insulating oil, and increased safety hazards in power transformers.
Active Publication Date: 2022-02-11
HUAWEI DIGITAL POWER TECH CO LTD
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Problems solved by technology
[0004] However, the existing maintenance methods not only increase the workload, but also increase the safety hazards for the normal operation of power transformers
For example, during the inspection period, there may be desiccant moisture absorption and saturation in advance, resulting in excessive humidity of the air entering the oil tank, which will easily lead to excessive moisture content in insulating oil and deterioration of high-voltage insulation, thereby causing electrical equipment failure
In addition, there is a high cost to replace the color-changing silica gel, and the replaced silica gel will also cause pollution and waste disposal problems
Method used
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Embodiment Construction
[0027] The embodiment of the present application provides a control system and method for a maintenance-free dehumidifier, which is applied to a transformer system, can judge the breathing state of the transformer, and then can control the silica gel in the maintenance-free dehumidifier when the transformer is in the exhaling state. Thermal drying ensures the safety of the transformer system.
[0028] The shape structure of the transformer in the transformer system in the embodiment of the present application is a structure with an oil conservator. In order to enable those skilled in the art to better understand the solutions of the present application, the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.
[0029] see figure 1 , figure 1 It is a schematic diagram of the structure of the transformer system in the embodiment of the present application. Such as figure 1 As shown, the...
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Embodiments of the present application provide a control system and method for a maintenance-free dehumidifier. The dehumidifier is connected to the detection device and the transformer of the control system. The control method includes: collecting humidity data in the moisture absorber through the detection device; when the humidity data is greater than the preset humidity, detecting the temperature data in the transformer through the detection device; judging whether the transformer is in the exhalation state according to the temperature data; state, control the heating rod in the moisture absorber to work to heat and dry the desiccant in the moisture absorber. The application can judge the respiration state of the transformer according to the temperature data in the transformer, which improves the reliability of the judgment of the respiration state of the transformer. In addition, this solution can heat and dry the desiccant in the moisture absorber when the transformer is in the state of exhalation, which ensures the safety of the transformer system.
Description
technical field [0001] The application relates to the technical field of transformer systems in power systems, and in particular to a control method and control system for a maintenance-free dehumidifier. Background technique [0002] At present, equipment with oil tanks in the power industry, such as large-scale power transformers and reactors, are filled with insulating oil. The oil tanks of such high-voltage electrical equipment will expand due to thermal expansion and contraction due to temperature changes, resulting in changes in the oil level of the oil tank, which require moisture absorbers to balance The difference in air pressure inside and outside the tank. When the fuel tank is inhaled under negative pressure, the external air is dried and purified by the dehumidifier and then enters the fuel tank; when the internal pressure of the fuel tank is greater than the external air pressure, the gas exhaled from the fuel tank is discharged through the dehumidifier. The m...
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IPC IPC(8): H01F27/14G05D23/30
CPCH01F27/14G05D23/30
Inventor 封雷张彦忠万松
Owner HUAWEI DIGITAL POWER TECH CO LTD