Steam fog device for high-voltage electrical equipment artificial pollution laboratory

Abstract

The invention discloses a steam fog device for a high-voltage electrical equipment artificial pollution laboratory. The steam fog device comprises an electric steam boiler, a steam pipeline, a steam manifold, steam outlets and a high-voltage electrical equipment artificial pollution laboratory, wherein the electric steam boiler is communicated with an air inlet of the steam manifold through the steam pipeline; the steam outlets are formed in the high-voltage electrical equipment artificial pollution laboratory; the steam fog device also comprises proportional regulation valves, steam flow meters, temperature / humidity sensors and a steam flow automatic controller; the air outlets of the steam manifold are sequentially communicated with corresponding proportional regulation valves, steam flow meters and steam outlets through a steam pipeline; the temperature / humidity sensors are mounted in the high-voltage electrical equipment artificial pollution laboratory and are close to the air outlets of the steam outlets; and the steam flow automatic controller is connected with the electric steam boiler, the proportional regulation valves, the steam flow meters and the temperature / humidity sensors respectively. The steam fog device disclosed by the invention can realize remote control on the steam flow and guarantee consistent steam flow and uniform indoor temperature / humidity.

Description

technical field [0001] The invention belongs to the technical field of electrical engineering, and in particular relates to a steam mist device for artificial pollution laboratories of high-voltage electrical equipment. Background technique [0002] Pollution flashover of high-voltage electrical equipment is one of the serious threats to the safe and stable operation of the power system. Pollution flashover accidents have occurred many times in heavily polluted areas in my country, causing large-scale power outages for a long time, and even grid disintegration, resulting in huge economic losses. In order to study pollution flashover, many research institutions have built artificial pollution laboratories for high-voltage electrical equipment according to the test methods recommended by the national standard "GB / T 4585-2004", and used steam mist devices to increase indoor humidity in the pollution laboratories to meet the artificial pollution requirements of high-voltage elect...

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Problems solved by technology

[0003] The main problems of the current steam mist device are: 1) The steam flow is adjusted by a manual valve, which cannot be controlled remotely and can only be operated manually on site. When the steam mist device is working, the steam pressure is high and the temperature is high. 2) In each test, the experimenter needs to manually adjust the steam flow rate according to the indoor temperature and humidity conditions, which is easy to cause the wetting time of the tested product to be inconsistent with the rate of contamination loss in each test. As a result, the dispersion of pollution flashover voltage is large, which affects the repeatability and consistency of pollution test data; 3) The national standard stipulates that during a single artificial pollution flashover test, the temperature rise in the artificial pollution test room shall not exceed 15°C. Manual control of steam flow tends to cause the indoor temperature rise to exceed the standard; 4) The uniformity of indoor temperature and humidity is difficult to control

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