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System and method for online monitoring SO2 in SF6 electrical equipment through ultraviolet spectrum

A technology for ultraviolet spectroscopy and electrical equipment, applied in the direction of testing dielectric strength, etc., can solve problems such as unfavorable equipment failure, long sampling interval, and large equipment volume, and achieve the effect of preventing interference, increasing stability, and increasing operating speed.

Active Publication Date: 2014-09-17
ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD +1
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Problems solved by technology

Due to the large volume of equipment required by these methods, they cannot be applied in the field, so the sampling interval is long, which is not conducive to timely detection of equipment faults and defects

Method used

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  • System and method for online monitoring SO2 in SF6 electrical equipment through ultraviolet spectrum
  • System and method for online monitoring SO2 in SF6 electrical equipment through ultraviolet spectrum
  • System and method for online monitoring SO2 in SF6 electrical equipment through ultraviolet spectrum

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Embodiment Construction

[0066] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0067] Ultraviolet spectrum online monitoring SF proposed by the present invention 6 SO in electrical equipment 2 The system and method, using ultraviolet spectrum detection and through a variety of data processing methods, realized the detection of SF 6 SO in electrical equipment 2 On-line sampling and detection of gas can timely detect SF 6 Electrical equipment makes fault judgment and preliminary warning.

[0068] The structure of the present invention is as figure 1 As shown in the figure: sampling interface module 17-1 at one end, sampling interface module 17-2 at the other end, transmitter interface hollow bolt 18-1 at one end, and transmitter interface hollow bolt 18-2 at the other end , One end of the base is fixed with a screw hole 19-1, the other end of the base is fixed with a screw hole 19-2, a straight-through pipeline 20, an...

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Abstract

The invention discloses a system and a method for online monitoring SO2 component in SF6 electrical equipment through ultraviolet spectrum. The system mainly comprises a gas sampling tank, a lower computer control module, an ultraviolet spectrograph, a deuterium lamp light source, a vacuum pump, to-be-tested SF6 electrical equipment, and an upper computer data processing and state analysis module. The lower computer control module controls the operation of an electromagnetic valve, so as to lead sample gas into the gas sampling tank from the to-be-tested SF6 electric equipment, and the ultraviolet spectrograph and the deuterium lamp light source are matched to obtain sample gas spectrum signals and transmit the sample gas spectrum signals to the upper computer data processing and state analysis module to carry out the postprocessing of the program, and a testing result is outputted after judging whether discharge derivate SO2 exists in the SF6 electrical equipment. According to the system and method, an ultraviolet spectrum method is utilized to monitor SO2 component in the equipment in real time, and the problem that the SF6 electrical equipment cannot be monitored online is solved. The system has the characteristics of small size, low cost, easy installation and the like, thereby being suitable for field complex test requirements.

Description

technical field [0001] The present invention relates to SF 6 The field of discharge fault detection of electrical equipment, especially related to the online monitoring of SF by ultraviolet spectroscopy 6 SO in electrical equipment 2 Component systems and methods. Background technique [0002] SF 6 The gas is very stable and has excellent insulation and arc extinguishing properties. It is by far the most ideal insulation and arc extinguishing medium, and is widely used in gas-insulated combined electrical appliances (GIS). However SF 6 Electrical equipment under normal operating conditions, SF 6 The gas will still decompose under the action of arc, spark and corona discharge, and the generated ions and ion clusters will react with trace moisture, gas impurities, metal electrode materials and solid insulating materials in the GIS to form complex derivatives. The existence of these derivatives will cause the corrosion of the metal parts inside the equipment, the deterior...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/12
Inventor 黄云光王先培朱立平赵宇余志祥董政呈谭学园刘陈瑶
Owner ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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