Temperature and humidity combined control system and method for artificial pollution test room
A technology of artificial pollution and combined control, which is applied in the direction of control/regulation system, test dielectric strength, non-electric variable control, etc., and can solve problems such as external insulation problems of power lines, changes in insulation conditions of insulators, and hazards to normal operation of power lines
Inactive Publication Date: 2013-09-18
STATE GRID CORP OF CHINA +1
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[0002] For insulators installed on transmission lines, due to long-term exposure to the open-air natural environment, dirt will be deposited on the surface of the insulator, and the dirt contains electrolytic substances. It may lead to problems with the external insulation of the power line and cause harm to the normal operation of the power line
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[0030] System example such as figure 1 Shown: a combined control system of room temperature and humidity for artificial pollution test, including a humidifier 3, a heater 4 and a ventilation fan 6; it is characterized in that it also includes a temperature and humidity sensor 5, an industrial computer 7 and a data acquisition card 8; the humidifier 3 , heater 4, ventilation fan 6 and temperature and humidity sensor 5 are connected with data acquisition card 8 respectively, and data acquisition card 8 is connected with industrial computer 7. The insulator 2 is placed in the fog chamber 1, and the fog chamber is an artificial pollution test room for insulators. The heater 4 is selected as a resistive heating wire with a length of 30m and a power of 250W, and is evenly arranged around the mist chamber; the humidifier 3 is selected as an ultrasonic humidifier with an adjustable amount of mist; Humidity exchange to reduce the temperature and humidity in the fog chamber.
[0031] ...
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The invention belongs to the technical field of high-voltage insulator experiments and particularly relates to a temperature and humidity combined control system for an artificial pollution test room. The system comprises a humidifier, a heater and a ventilation fan and further comprises a temperature and humidity sensor, an industrial personal computer and a data acquisition card. The humidifier, the heater, the ventilation fan and the temperature and humidity sensor are connected with the data acquisition card respectively, and the data acquisition card is connected with the industrial personal computer. Temperature and humidity control target values of a spray room are set through program software of the industrial personal computer, the data acquisition card acquires temperature and humidity value information in an existing state in the spray room through the temperature and humidity sensor, the temperature and humidity value information is input in the industrial personal computer to be compared with the set temperature and humidity control target values and judged, a corresponding working condition mode is determined, the heater, the humidifier and the ventilation fan are controlled respectively, and the temperature and humidity combined accurate control is achieved. An accurate test environment is provided for study on characteristics of leakage currents of the surfaces of insulators, such as leakage current maximum values, pulse peak values, the pulse discharge capacity and leakage current high-frequency components.
Description
technical field [0001] The invention belongs to the technical field of high-voltage insulator experiments, and in particular relates to a combined control system of room temperature and humidity for artificial pollution tests, and also relates to a combined control method for room temperature and humidity of artificial pollution tests. Background technique [0002] For insulators installed on transmission lines, due to long-term exposure to the open-air natural environment, dirt will be deposited on the surface of the insulator, and the dirt contains electrolytic substances. It may lead to problems with the external insulation of the power line and bring harm to the normal operation of the power line. The artificial pollution test of high-voltage insulators is to study the pollution withstand voltage of insulators in fog through experimental methods. [0003] External insulation is a key basic subject for electric power development. When studying the pollution flashover ch...
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IPC IPC(8): G05D27/02G01R31/12
Inventor 张子龙翟耀乾唐凯吕强焦小强张步勇戴罕奇赵晨龙
Owner STATE GRID CORP OF CHINA
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