Verification and comparison circuit of ultraviolet imager

An ultraviolet imaging and comparison circuit technology, which is applied to instruments, measuring electrical variables, testing dielectric strength, etc., can solve problems such as verification and comparison of ultraviolet imagers, and achieve the effect of eliminating network operation and improving equipment quality.

Inactive Publication Date: 2020-04-10
ELECTRIC POWER RES INST STATE GRID SHANXI ELECTRIC POWER
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a verification and comparison circuit of an ultraviolet imager, which solves the technical problem of how to effectively verify and compare the ultraviolet imager

Method used

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  • Verification and comparison circuit of ultraviolet imager

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Embodiment Construction

[0019] The present invention is described in detail below in conjunction with accompanying drawing:

[0020] A calibration comparison circuit for an ultraviolet imager, including a 380-volt power supply system 1, a variable frequency power supply that converts a three-phase power supply into a frequency-adjustable single-phase power supply 3, an excitation transformer without partial discharge 4, a reactor 5, and a Halo wire 8, coupling capacitor 7, detection impedance 12, voltage divider 11, partial discharge tester 14 and ultraviolet imager 16, 380 volt power supply system 1 is connected together with the input end of variable frequency power supply 3 through high-voltage cable 2, excitation The output end of the transformer 4 is connected together with the low-voltage end of the reactor 5 through the pressure line 6, the coupling capacitor 7 is connected in parallel with the detection impedance 12 at both ends of the voltage divider 11, and the high-voltage end of the reacto...

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Abstract

The invention discloses a verification and comparison circuit of an ultraviolet imager, and solves the problem of how to perform effective verification and comparison on the ultraviolet imager. A 380Vpower supply system (1) is connected with the input end of a variable-frequency power supply (3) through a high-voltage cable (2); the output end of an exciting transformer (4) is connected with thelow-voltage end of an electric reactor (5) through a pressurizing wire (6); the high-voltage end of the electric reactor (5) is connected with the high-voltage end of a voltage divider (11) through acorona-free wire (8); the high-voltage tail end of the exciting transformer (4) without partial discharge, the ground end of the voltage divider (11) and the ground end of a detection impedor (12) areall connected with a ground end (10) through a ground shielding wire (9); a tiny crevasse burr point (15) is arranged on the corona-free wire (8); and the other end of a coaxial cable (13) is connected with the input end of a partial discharge tester (14). And the network access detection work of the ultraviolet imager of the live detection instrument is realized.

Description

technical field [0001] The invention relates to an inspection and comparison circuit of charged detection equipment, in particular to a circuit and a verification and comparison method for an ultraviolet imager for real-time detection of corona phenomenon generated by partial discharge of charged equipment. Background technique [0002] Ultraviolet imager is one of the main equipment for live detection of power grid equipment. It is generally used to detect the corona phenomenon caused by partial discharge of live equipment in real time, so as to promptly remind operation and maintenance personnel to carry out condition maintenance of live equipment; ultraviolet imager is expensive and the product The quality is uneven; at present, the power grid operation department does not have a verification method for the ultraviolet imager, and cannot effectively verify and compare its detection performance. It is urgent to develop a method that can compare the ultraviolet imager The c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/00G01R31/12
CPCG01R31/1218G01R35/00G01R35/005
Inventor 刘宏王伟梁基重俞华胡帆李国栋牛曙
Owner ELECTRIC POWER RES INST STATE GRID SHANXI ELECTRIC POWER
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