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Method for alternating-current voltage withstand testing of 220 kV and 330 kV insulated tools and instruments

A technology of insulating tools and test methods, which is applied to instruments, measuring devices, measuring electricity and other directions to achieve the effects of good electrical performance, reducing labor intensity and improving work efficiency

Inactive Publication Date: 2014-09-10
STATE GRID CORP OF CHINA +2
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

As far as the applicant knows, so far, there is no fully standardized method for AC withstand voltage test of 220kV and 330kV insulating tools and appliances

Method used

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  • Method for alternating-current voltage withstand testing of 220 kV and 330 kV insulated tools and instruments
  • Method for alternating-current voltage withstand testing of 220 kV and 330 kV insulated tools and instruments
  • Method for alternating-current voltage withstand testing of 220 kV and 330 kV insulated tools and instruments

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Embodiment Construction

[0040] Examples of devices such as figure 1 and figure 2 Shown: a 220kV and 330kV insulating tool AC withstand voltage test device, characterized in that: the device includes a liftable device, two sets of splint electrodes 6 and a set of grounding device 8; the liftable device includes four liftable brackets 1 , four liftable supports 1 are arranged on the ground, and arranged in groups of 2×2 horizontally and vertically; two sets of splint electrodes 6 are respectively installed on the top of the front row and rear row liftable support 1; the liftable support 1 includes a base 3 1. A height-adjustable insulating pole 9 installed on the base 3, a supporting plate 7 is installed on the upper end of the height-adjustable insulating pole 9; one end of the grounding device 8 is connected with the supporting plate 7, and the other end is connected with the lifting support where the supporting plate 7 is located 1 to the chassis 3 connected.

[0041] see image 3 and Figure 4...

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Abstract

Provided is a method for alternating-current voltage withstand testing of 220 kV insulated tools and instruments. The method comprises the steps of arranging four insulating lifting supports, two groups of clamp plate electrodes and a grounding device; connecting two ends of each group of clamp plate electrodes to the upper ends of two insulating lifting supports through supporting plates, placing four base discs on the ground to be rectangular, and adjusting the distance between the two groups of clamp plate electrodes to be 1.8 m; arranging a 500 kV testing transformer; adjusting the heights of the top ends of insulating supporting rods to be 2.1 m above the ground; sequentially placing the heads of tested objects in a sawtooth-shaped groove of the group of clamp plate electrodes which is to be connected to a high-voltage wire, sequentially placing the tail ends in a sawtooth-shaped groove of the other group of clamp plate electrodes; installing the grounding device on the lifting support at the tail ends of the tested objects, boosting the voltage to 440 kV, and reducing the voltage at a constant speed after the voltage boosting time is 1 min. According to the method, alternating-current voltage withstand testing of 220 kV and 330 kV insulated tools and instruments is finished through the 500 kV testing transformer on a large scale.

Description

technical field [0001] The invention relates to a method for performing an AC withstand voltage test on insulating tools of ultra-high voltage power transmission and transformation equipment in a power system, specifically an AC withstand voltage test method for 220kV and 330kV insulating tools. Background technique [0002] With the development of ultra (ultra) high voltage power grid construction, the voltage level and equipment working conditions of power transmission and transformation equipment have been significantly improved. Compared with the past, the new smart grid is more advanced, more scientific, more environmentally friendly, and more energy-saving. , in order to be able to adapt to the needs of the current power grid, the requirements for power transmission and transformation equipment are getting higher and higher. Similarly, with the gradual increase of the voltage level, the requirements for the insulation level of insulating tools and appliances are also ge...

Claims

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Application Information

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IPC IPC(8): G01R31/18G01R1/04
Inventor 冯庆国李将亮李志永茹秋实康鹏周顺学吕建中徐立庆海世杰张宏星
Owner STATE GRID CORP OF CHINA
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