GIS equipment low-voltage conductor surface electric field intensity measurement device and method

A technology of electric field strength and measuring device, applied in the direction of measuring device, electrostatic field measurement, testing dielectric strength, etc., can solve problems such as equipment failure, insulation defect, GIS equipment defect, etc. Effect of GIS Internal Insulation Strength

Inactive Publication Date: 2017-06-27
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

[0003] With the development of power grid construction, due to the limitations of site conditions, geological conditions and environmental conditions in substation construction, more and more GIS equipment are used, and more and more GIS equipment are currently operating in the power grid system. , and arguably even most of SF 6, For gas i

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  • GIS equipment low-voltage conductor surface electric field intensity measurement device and method
  • GIS equipment low-voltage conductor surface electric field intensity measurement device and method
  • GIS equipment low-voltage conductor surface electric field intensity measurement device and method

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Embodiment Construction

[0013] The present invention provides a device and method for measuring electric field intensity on the surface of a low-voltage conductor of GIS equipment. The present invention will be described below in conjunction with the accompanying drawings.

[0014] figure 1 Shown is a schematic diagram of the GIS equipment low-voltage conductor surface electric field intensity measuring device, the measuring device is that the GIS equipment shell 2 is fixed on the base 10 through the short bracket 9, and the high-voltage conductor 1 is supported on the center of the GIS equipment shell 2 through the long bracket 8 on the base 10 , cut 0.8m in the middle of shell 2 2 Wedge 3 (eg figure 2 As shown), the edge of wedge 3 is insulated and supported in situ with insulating material 11; the wire drawn from wedge 3 is connected to resistor 4 of 10 kΩ, and resistor 4 is grounded, and the two ends of resistor 4 are connected through cable 5 to amplify The circuit 6; the amplifying circuit 6...

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Abstract

The invention discloses a GIS equipment low-voltage conductor surface electric field intensity measurement method which belongs to the technical field of conductor surface electric field measurement. The structure of an electric field intensity measurement device is that a GIS equipment housing is fixed on a pedestal through a short support, a high-voltage conductor is supported in the center of the GIS equipment housing through a long support on the pedestal, and a wedge block is cut in the middle of the housing and is supported in situ with insulating material; the wedge block is connected with a resistor of 10 kilo ohms, the resistor is connected to the ground, and two ends of the resistor are connected with an amplifier circuit; the amplifier circuit is connected with a display; electric field intensity measurement is that high-voltage electricity of alternating current 220kV is applied to the high-voltage conductor, voltage signals of the two ends of the resistor are input to the amplifier circuit through a cable, and the reading of the electric field intensity is displayed on the display. Through electric field calculation and analysis of internal defects of GIS equipment, and through verification by a test, the GIS equipment low-voltage conductor surface electric field intensity measurement structure is of great significance to improving the internal insulating strength of the GIS and researching a relation between the internal defects and electric field intensity of the GIS equipment.

Description

technical field [0001] The invention belongs to the technical field of conductor surface electric field measurement, in particular to a method for measuring the electric field intensity of a low-voltage conductor surface of GIS equipment. Specifically, it is to study the relationship between the development of partial discharge of typical defects inside GIS equipment and the electric field intensity. Background technique [0002] Gas Insulated Switchgear (GIS, Gas Insulated Switchgear) has the characteristics of small size, integration and convenient installation, and is widely used in substations in power systems. With the continuous increase of grid voltage level and system capacity, internal faults of GIS equipment also occur frequently. Therefore, this device is of great significance for the research of partial discharge caused by internal defects of GIS. Partial discharge is not only the harbinger and manifestation of equipment insulation deterioration, but also the c...

Claims

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Application Information

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IPC IPC(8): G01R31/12G01R29/12
CPCG01R31/1254G01R29/12
Inventor 卢斌先杨颖
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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