CN104569771A - Primary-side insulation discharge pulse detector for oil-immersed current transformer - Google Patents
Primary-side insulation discharge pulse detector for oil-immersed current transformer Download PDFInfo
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- CN104569771A CN104569771A CN201510047367.3A CN201510047367A CN104569771A CN 104569771 A CN104569771 A CN 104569771A CN 201510047367 A CN201510047367 A CN 201510047367A CN 104569771 A CN104569771 A CN 104569771A
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- current transformer
- shell
- output terminal
- processor
- photoelectric commutator
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Abstract
The invention discloses a primary-side insulation discharge pulse detector for an oil-immersed current transformer. The primary-side insulation discharge pulse detector comprises a current sensor with a cross-core opening, a processor, a shell, a transmission fiber and a photoelectric converter. The processor is arranged in the shell. A primary high-voltage system of the current sensor is connected with the outside of the shell. An output end of the current sensor is connected with an input end of the processor. An output end of the processor is connected with an input end of the photoelectric converter. An output end of the photoelectric converter is connected with external equipment. By the use of the primary-side insulation discharge pulse detector, insulation discharge pulse of the oil-immersed current transformer is detected.
Description
Technical field
The invention belongs to electrical engineering high-potting field, relate to a kind of pulse detecting equipment, be specifically related to a kind of oil immersed current transformer discharge in insulation pulse detecting equipment for primary side.
Background technology
Current transformer is the indispensable visual plant of electric system, realizes the functions such as the protection of electrical network, measurement, metering.Oil-immersed current transformer have rapid heat dissipation, conduction evenly, insulativity can recover and product structure simple, to manufacture and operating experience is abundant etc. that feature obtains applying the most widely.Therefore, the quality of oil-immersed current transformer insulation directly determines the safe and stable operation of electrical network, nearly all electrical equipment is breaking down or is having hidden danger period, corresponding change can be there is in main characteristic parameters such as shelf depreciation, chromatogram, the temperature rise etc. of faults character, wherein the most responsive index is exactly shelf depreciation, and the partial discharge pulse therefore detecting paper oil insulation becomes judgement, evaluates the effective means of its state.
Pulse current method detects insulating medium shelf depreciation becomes one of the most common method, pass through when shelf depreciation occurs in oil immersed current transformer insulation at paper oil insulation end or earth potential place sensor installation or detect impedance acquisition pulse signal, as the foundation that determination and analysis insulation is good and bad.But be generally the operational reliability ensureing this kind equipment, at device interior, paper oil insulation end is welded with package header during producer's Design and manufacture, due to the shunting action of this " dead ground connection ", so oil immersed current transformer is unsatisfactory in pulse current method Test Field.
Summary of the invention
The object of the invention is to the shortcoming overcoming above-mentioned prior art, provide a kind of oil immersed current transformer discharge in insulation pulse detecting equipment for primary side, this device can realize the detection of oil immersed current transformer discharge in insulation pulse.
For achieving the above object, oil immersed current transformer discharge in insulation pulse detecting equipment for primary side of the present invention comprises opening centre path current sensor, processor, shell, Transmission Fibers and photoelectric commutator, processor is positioned at described shell, a high-pressure system of opening centre path current sensor is connected with the outside of shell, the output terminal of opening centre path current sensor is connected with the input end of processor, the output terminal of processor is connected with the input end of photoelectric commutator by Transmission Fibers, the output terminal of photoelectric commutator is connected with external equipment.
Described processor comprises filtering circuit, amplifying circuit and electrical to optical converter, the pulse signal input terminal mouth of filtering circuit and the light signal output end mouth of electrical to optical converter are all fixed on the side of shell, the output terminal of opening centre path current sensor is connected by signal wire with the pulse signal input terminal mouth of filtering circuit, the output terminal of filtering circuit is connected with the input end of amplifying circuit, the output terminal of amplifying circuit and the input end of photoelectric commutator, the light signal output end mouth of photoelectric commutator is connected with the input end of photoelectric commutator by Transmission Fibers.
Also comprise link, shell is connected with a high-pressure system of opening centre path current sensor by described link.
Described link is zigzag structure.
The output terminal of described photoelectric commutator is provided with the USB interface for being connected with external equipment.
Described shell is aluminium shell.
The present invention has following beneficial effect:
Oil immersed current transformer discharge in insulation pulse detecting equipment for primary side of the present invention is when detecting oil immersed current transformer discharge in insulation pulse, to only opening centre path current sensor need be hanging on the cable that is connected with oil immersed current transformer output terminal, when oil immersed current transformer carries out discharge in insulation, opening centre path current sensor produces electric signal, the treated device of described electric signal carries out opto-electronic conversion through photoelectric commutator after carrying out electro-optic conversion again, finally be input in external equipment, thus the detection realized oil immersed current transformer discharge in insulation pulse, simultaneously because processor is operated in high voltage, under the environment of high electric field, in the present invention, processor is positioned at described shell, shell is connected with a high-pressure system of opening centre path current sensor, thus avoid high pressure, high electric field environment is in the impact of processor work, improve the accuracy of data processing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Wherein, 1 be opening centre path current sensor, 2 be signal wire, 3 be pulse signal input terminal mouth, 4 be shell, 5 be light signal output end mouth, 6 be Transmission Fibers, 7 be photoelectric commutator, 8 for USB interface.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail:
With reference to figure 1, oil immersed current transformer discharge in insulation pulse detecting equipment for primary side of the present invention comprises opening centre path current sensor 1, processor, shell 4, Transmission Fibers 6 and photoelectric commutator 7, processor is positioned at described shell 4, a high-pressure system of opening centre path current sensor 1 is connected with the outside of shell 4, the output terminal of opening centre path current sensor 1 is connected with the input end of processor, the output terminal of processor is connected by the input end of Transmission Fibers 6 with photoelectric commutator 7, the output terminal of photoelectric commutator 7 is connected with external equipment.
It should be noted that, described processor comprises filtering circuit, amplifying circuit and electrical to optical converter, the pulse signal input terminal mouth 3 of filtering circuit and the light signal output end mouth 5 of electrical to optical converter are all fixed on the side of shell 4, the output terminal of opening centre path current sensor 1 is connected by signal wire 2 with the pulse signal input terminal mouth 3 of filtering circuit, the output terminal of filtering circuit is connected with the input end of amplifying circuit, the output terminal of amplifying circuit and the input end of photoelectric commutator 7, the light signal output end mouth 5 of photoelectric commutator 7 is connected by the input end of Transmission Fibers 6 with photoelectric commutator 7, the present invention also comprises link, and shell 4 is connected with a high-pressure system of opening centre path current sensor 1 by described link, link is zigzag structure, the output terminal of photoelectric commutator 7 is provided with the USB interface 8 for being connected with external equipment, shell 4 is aluminium shell.
Specific works process of the present invention is:
The discharge in insulation pulse that oil immersed current transformer produces is exported by cable, pulse signal on opening centre path current sensor 1 detection streamer, and produce electric signal, then described electric signal is forwarded in filtering circuit through signal wire 2, filtering circuit carries out filtering to described electric signal, amplifying circuit amplifies filtered electric signal, electric signal after amplification is converted to light signal by electrical to optical converter, light signal is delivered in photoelectric commutator 7 through Transmission Fibers 6, photoelectric commutator 7 is converted to electric signal to described light signal, and described electric signal is forwarded in external equipment through USB interface 8, thus the detection realized oil immersed current transformer discharge in insulation pulse.
Claims (6)
1. the oil immersed current transformer discharge in insulation pulse detecting equipment for primary side, it is characterized in that, comprise opening centre path current sensor (1), processor, shell (4), Transmission Fibers (6) and photoelectric commutator (7), processor is positioned at described shell (4), a high-pressure system of opening centre path current sensor (1) is connected with the outside of shell (4), the output terminal of opening centre path current sensor (1) is connected with the input end of processor, the output terminal of processor is connected by the input end of Transmission Fibers (6) with photoelectric commutator (7), the output terminal of photoelectric commutator (7) is connected with external equipment.
2. the oil immersed current transformer discharge in insulation pulse detecting equipment for primary side according to claim 1, it is characterized in that, described processor comprises filtering circuit, amplifying circuit and electrical to optical converter, the pulse signal input terminal mouth (3) of filtering circuit and the light signal output end mouth (5) of electrical to optical converter are all fixed on the side of shell (4), the output terminal of opening centre path current sensor (1) is connected by signal wire (2) with the pulse signal input terminal mouth (3) of filtering circuit, the output terminal of filtering circuit is connected with the input end of amplifying circuit, the input end of the output terminal of amplifying circuit and photoelectric commutator (7), the light signal output end mouth (5) of photoelectric commutator (7) is connected by the input end of Transmission Fibers (6) with photoelectric commutator (7).
3. the oil immersed current transformer discharge in insulation pulse detecting equipment for primary side according to claim 1, it is characterized in that, also comprise link, shell (4) is connected with a high-pressure system of opening centre path current sensor (1) by link.
4. the oil immersed current transformer discharge in insulation pulse detecting equipment for primary side according to claim 3, it is characterized in that, described link is zigzag structure.
5. the oil immersed current transformer discharge in insulation pulse detecting equipment for primary side according to claim 1, it is characterized in that, the output terminal of described photoelectric commutator (7) is provided with the USB interface (8) for being connected with external equipment.
6. the oil immersed current transformer discharge in insulation pulse detecting equipment for primary side according to claim 1, it is characterized in that, described shell (4) is aluminium shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510047367.3A CN104569771A (en) | 2015-01-29 | 2015-01-29 | Primary-side insulation discharge pulse detector for oil-immersed current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510047367.3A CN104569771A (en) | 2015-01-29 | 2015-01-29 | Primary-side insulation discharge pulse detector for oil-immersed current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104569771A true CN104569771A (en) | 2015-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510047367.3A Pending CN104569771A (en) | 2015-01-29 | 2015-01-29 | Primary-side insulation discharge pulse detector for oil-immersed current transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655697A (en) * | 2019-01-29 | 2019-04-19 | 国网宁夏电力有限公司培训中心 | A kind of distribution arrester electrification detection system |
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| JPH04324377A (en) * | 1991-04-25 | 1992-11-13 | Toshiba Corp | Partial discharge pulse detector |
| CN101353063A (en) * | 2008-07-07 | 2009-01-28 | 国营红峰机械厂 | Self-adapting intelligent walking method for pipe cleaning robot |
| CN201344949Y (en) * | 2009-02-16 | 2009-11-11 | 陕西电力科学研究院 | Portable feedthrough small current sensor with 750kV transformer field idling characteristic |
| CN201589600U (en) * | 2009-03-30 | 2010-09-22 | 浙江师范大学 | Optical fiber connector end surface detector |
| CN102565588A (en) * | 2012-01-14 | 2012-07-11 | 天津大学 | On-line monitoring method used for high-voltage XLPE (Cross Linked Polyethylene) cable |
| CN102937510A (en) * | 2012-11-12 | 2013-02-20 | 中国科学院高能物理研究所 | Performance testing device aiming at X-ray scintillation screen |
| CN202794417U (en) * | 2012-08-16 | 2013-03-13 | 大连世有电力科技有限公司 | Sensing and transforming integrated device for transformer iron core grounding monitoring |
| CN103605060A (en) * | 2013-12-04 | 2014-02-26 | 国家电网公司 | Oil immersed inverted current transformer partial discharge detection system |
| CN203894317U (en) * | 2014-03-19 | 2014-10-22 | 浙江科畅电子有限公司 | Online monitoring device used for leakage current of high-voltage cables |
-
2015
- 2015-01-29 CN CN201510047367.3A patent/CN104569771A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04324377A (en) * | 1991-04-25 | 1992-11-13 | Toshiba Corp | Partial discharge pulse detector |
| CN101353063A (en) * | 2008-07-07 | 2009-01-28 | 国营红峰机械厂 | Self-adapting intelligent walking method for pipe cleaning robot |
| CN201344949Y (en) * | 2009-02-16 | 2009-11-11 | 陕西电力科学研究院 | Portable feedthrough small current sensor with 750kV transformer field idling characteristic |
| CN201589600U (en) * | 2009-03-30 | 2010-09-22 | 浙江师范大学 | Optical fiber connector end surface detector |
| CN102565588A (en) * | 2012-01-14 | 2012-07-11 | 天津大学 | On-line monitoring method used for high-voltage XLPE (Cross Linked Polyethylene) cable |
| CN202794417U (en) * | 2012-08-16 | 2013-03-13 | 大连世有电力科技有限公司 | Sensing and transforming integrated device for transformer iron core grounding monitoring |
| CN102937510A (en) * | 2012-11-12 | 2013-02-20 | 中国科学院高能物理研究所 | Performance testing device aiming at X-ray scintillation screen |
| CN103605060A (en) * | 2013-12-04 | 2014-02-26 | 国家电网公司 | Oil immersed inverted current transformer partial discharge detection system |
| CN203894317U (en) * | 2014-03-19 | 2014-10-22 | 浙江科畅电子有限公司 | Online monitoring device used for leakage current of high-voltage cables |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655697A (en) * | 2019-01-29 | 2019-04-19 | 国网宁夏电力有限公司培训中心 | A kind of distribution arrester electrification detection system |
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Application publication date: 20150429 |