CN-224203330-U - Integrated comprehensive on-line monitoring device for transformer

Abstract

The utility model discloses an integrated comprehensive on-line monitoring device for a transformer, which comprises a shell and is characterized in that a chromatographic sensing mechanism, a partial discharge detection mechanism and a winding temperature detection mechanism are arranged in the shell, the chromatographic sensing mechanism comprises a stepping motor (1), the working end of the stepping motor (1) is connected with a piston (3) movably connected in a cylinder (2) through a screw rod, the inner cavity of the cylinder (2) is respectively communicated with an oil-gas separation device (6) and a chromatographic column (8) through a first pipeline (4) and a second pipeline (5), a first one-way valve is arranged on the first pipeline (4), a second one-way valve (10) is arranged on the second pipeline (5), gas in the oil-gas separation device (6) can enter the cylinder (2), and gas in the cylinder (2) can enter the chromatographic column (8).

Inventors

• WANG SHIYOU

Assignees

• 中交铁道设计研究总院有限公司
• 大连世有电力科技有限公司

Dates

Publication Date

20260505

Application Date

20250509

Claims (3)

1. 1. An integrated comprehensive on-line monitoring device for a transformer comprises a shell, and is characterized in that a chromatographic sensing mechanism, a partial discharge detection mechanism and a winding temperature detection mechanism are arranged in the shell, The chromatographic sensing mechanism comprises a stepping motor (1), the working end of the stepping motor (1) is connected with a piston (3) movably connected in a cylinder (2) through a screw rod, the inner cavity of the cylinder (2) is respectively communicated with an oil-gas separation device (6) and a chromatographic column (8) through a first pipeline (4) and a second pipeline (5), a first one-way valve is arranged on the first pipeline (4), a second one-way valve is arranged on the second pipeline (5), gas in the oil-gas separation device (6) can enter the cylinder (2), gas in the cylinder (2) can enter the chromatographic column (8), The partial discharge detection mechanism comprises a high-frequency antenna (9), the high-frequency antenna (9) is connected with a data acquisition card (11) through a signal amplifier (10), The winding temperature detection mechanism comprises an ultraviolet diode (12), a beam splitting prism (13) is arranged in the emergent direction of the ultraviolet diode (12), an energy optical fiber (14) is arranged in the transmission direction of the beam splitting prism (13), an optical fiber end cover (15) is arranged at the tail end of the energy optical fiber (14), the optical fiber end cover (15) is of a semi-closed quartz tube structure, temperature-sensitive fluorescent powder (16) is filled in the optical fiber end cover (15), a photoelectric detector (17) is arranged in the reflecting direction of the beam splitting prism (13), the photoelectric detector (17) is connected with a data acquisition card (11) through a signal amplifier (10), The monitoring device further comprises an industrial personal computer (18), wherein the industrial personal computer (18) is electrically connected with a chromatographic column (8), a data acquisition card (11) and an ultraviolet diode (12) in the chromatographic sensing mechanism, and meanwhile the data acquisition card (11) is electrically connected with the chromatographic column (8).
2. 2. The integrated comprehensive on-line monitoring device for the transformer according to claim 1, wherein the gain frequency band of the high-frequency antenna (9) is 300-1500MHz.
3. 3. The integrated on-line monitoring device for transformers according to claim 1, characterized in that said UV light diode (12) is capable of emitting light with a wavelength of 390-430 nm.

Description

Integrated comprehensive on-line monitoring device for transformer Technical Field The utility model relates to the field of detection of transformers, in particular to an integrated comprehensive on-line monitoring device for a transformer. Background The fault of the oil immersed transformer is usually caused by partial discharge caused by insulation problem firstly, and then the symptoms of rising concentration of dissolved gas of transformer oil, lowering of insulation performance, rising of winding temperature and the like are reflected gradually, so that serious faults and even fire are finally caused. In order to solve the problems, various monitoring devices are also put into the electric power system, wherein concentration detection of dissolved gas in oil is the most widely performed by chromatography, oil temperature detection is the most accurate and reliable by a fluorescence principle, and partial discharge detection is the most sensitive by an ultrahigh frequency sensor. The detection devices with different functions are required to be provided with independent sensing units, equipment shells, communication systems, human-computer interfaces, background systems and the like, so that the space utilization rate is low, and the detection devices are difficult to operate in cooperation with each other. Meanwhile, gas chromatography is used as an inspection means with highest reliability, but has a problem of relatively short service life. Frequent collection can lead to serious reduction of service life, and the sampling frequency is reduced, so that problems are difficult to discover timely, and certain limitations exist. There is thus a need for a method or apparatus that solves the above-mentioned problems. Disclosure of Invention The utility model aims to solve the defects in the prior art, and provides the integrated comprehensive on-line monitoring device which has the advantages of simple structure, ingenious design and reasonable layout, and can improve the fault detection efficiency of a transformer, the utilization rate of installation space of transformer substation equipment and the service life of a weather chromatograph. The technical proposal of the utility model is that the integrated comprehensive on-line monitoring device for the transformer comprises a shell, and is characterized in that a chromatographic sensing mechanism, a partial discharge detection mechanism and a winding temperature detection mechanism are arranged in the shell, The chromatographic sensing mechanism comprises a stepping motor 1, the working end of the stepping motor 1 is connected with a piston 3 movably connected in a cylinder 2 through a screw rod, the inner cavity of the cylinder 2 is respectively communicated with an oil-gas separation device 6 and a chromatographic column 8 through a first pipeline 4 and a second pipeline 5, a first one-way valve is arranged on the first pipeline 4, a second one-way valve is arranged on the second pipeline 5, gas in the oil-gas separation device 6 can enter the cylinder 2, gas in the cylinder 2 can enter the chromatographic column 8, The partial discharge detection mechanism comprises a high-frequency antenna 9, the high-frequency antenna 9 is connected with a data acquisition card 11 through a signal amplifier 10, The winding temperature detection mechanism comprises an ultraviolet diode 12, a beam splitting prism 13 is arranged in the emergent direction of the ultraviolet diode 12, an energy optical fiber 14 is arranged in the transmission direction of the beam splitting prism 13, the tail end of the energy optical fiber 14 is provided with an optical fiber end cover 15, the optical fiber end cover 15 is of a semi-closed quartz tube structure, temperature sensitive fluorescent powder 16 is filled in the optical fiber end cover 15, a photoelectric detector 17 is arranged in the reflecting direction of the beam splitting prism 13, the photoelectric detector 17 is also connected with a data acquisition card 11 through a signal amplifier 10, The monitoring device further comprises an industrial personal computer 18, wherein the industrial personal computer 18 is electrically connected with the chromatographic column 8, the data acquisition card 11 and the ultraviolet diode 12 in the chromatographic sensing mechanism, and meanwhile, the data acquisition card 11 is also electrically connected with the chromatographic column 8. The gain frequency band of the high-frequency antenna 9 is 300-1500MHz. The uv diode 12 is capable of emitting light at a wavelength of 390-430 nm. Compared with the prior art, the utility model has the following advantages: The integrated comprehensive on-line monitoring device for the transformer in the structural form is simple in structure, ingenious in design and reasonable in layout, and aims at the problems existing when different instruments are needed to be used for detecting different parameters in the traditional transformer detection pr