CN202975211U - Photoelectric trigger device for transient disturbance test of transformer substation - Google Patents
Photoelectric trigger device for transient disturbance test of transformer substation Download PDFInfo
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- CN202975211U CN202975211U CN 201220707065 CN201220707065U CN202975211U CN 202975211 U CN202975211 U CN 202975211U CN 201220707065 CN201220707065 CN 201220707065 CN 201220707065 U CN201220707065 U CN 201220707065U CN 202975211 U CN202975211 U CN 202975211U
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Abstract
The utility model relates to a photoelectric trigger device for transient disturbance test of a transformer substation. The device comprises an electric receiving module, an optic receiving module, a comparator, an electro-optic conversion module, a photoelectric conversion module and an oscilloscope, wherein the signal output ends of the electric receiving module and the optic receiving module are connected with the signal input end of the comparator respectively; the output end of the comparator is connected with the photoelectric conversion module through the electro-optic conversion module; and the output end of the photoelectric conversion module is connected with the oscilloscope. The photoelectric trigger device for the transient disturbance test of the transformer substation, which mainly comprises the electric receiving module, the optic receiving module, the comparator, the electro-optic conversion module and the photoelectric conversion module, can quickly, accurately and effectively receive instantaneous spatial electromagnetic disturbance produced by transient disturbance, and provides accurate trigger signals for the test of transient disturbance signals of the transformer substation. The device can be placed nearby high-voltage equipment by adopting a photoelectric isolating technology.
Description
Technical field
The utility model relates to high voltage power transmission and transforming engineering electromagnetic compatibility technology field, refers to particularly a kind of transformer station transient state harassing and wrecking test photoelectric trigger device.
Background technology
In transformer station, the normal operation of secondary device in complex electromagnetic environment such as control and protection is the basis of transformer station or even electric power netting safe running.For 500kV transformer station, electric pressure and the running current of 750kV transformer station and 1000kV transformer station all are improved largely, its electromagnetic disturbance problem is also more complicated, and these voltage levels, jumbo transformer station affect huge on whole electric power netting safe running.In addition, current China is just actively promoting the construction of intelligent grid, and there is larger difference in the secondary device of the secondary device of intelligent substation measuring and protecting and conventional substation measuring and protecting, and its electromagnetic disturbance also needs measure specially and study.Therefore carry out 750kV, 1000kV conventional substation and intelligent substation transient state electromagnetic disturbance characteristic and on the impact research of smart machine, for instructing super special substation equipment immunity to interference design and electromagnetic compatibility examination, guarantee that super special substation safety reliability service has important practical significance.
When transformer station's transient state harassing and wrecking are measured, be mainly the voltage and current signal of measuring on secondary device, usually adopt oscillograph to carry out.And one road trigger port need to be arranged when adopting oscillograph to carry out transient test, and instantaneously satisfy the trigger condition that oscillograph arranges what transient state process occured, make instantaneous harassing and wrecking under oscillograph recording.Because this voltage and current is generally of ac, electric current and voltage grow out of nothing directly trigger feasible, but when voltage and current signal even is not interfered with interference is less to nothing from having, directly triggering often can't realize, particularly the intelligent substation main signal has been that light signal directly triggers difficulty especially.
The utility model content
The purpose of this utility model will provide a kind of transformer station transient state harassing and wrecking test to use photoelectric trigger device, this device can receive light signal and electric signal in transient state process exactly.
For realizing this purpose, transformer station's transient state harassing and wrecking test photoelectric trigger device that the utility model is designed, it comprises electric receiver module, Optical Receivers, comparer, electrooptic conversion module, photoelectric conversion module and oscillograph, wherein, described electric receiver module is connected signal output part and is connected respectively the signal input part of comparer with Optical Receivers, the output terminal of comparer connects photoelectric conversion module by electrooptic conversion module, and the output terminal of described photoelectric conversion module connects oscillograph.
Described electrooptic conversion module and photoelectric conversion module all have at least one, connect by optical fiber between each electrooptic conversion module and corresponding photoelectric conversion module.
Described electric receiver module comprises flagpole antenna and the modulate circuit that is connected with flagpole antenna, and described modulate circuit connects the signal input part of comparer.
Described Optical Receivers comprises infrared receiving chip and resistance R 1, the feeder ear VCC of described infrared receiving chip connects power supply VCC, contact resistance R1 between the light signal input end of infrared receiving chip and feeder ear VCC, the earth terminal ground connection of described infrared receiving chip.
In technique scheme, it also comprises amplifier, and the signal output part of described comparer connects electrooptic conversion module by amplifier.
Transformer station's transient state harassing and wrecking test photoelectric trigger device that the utility model design mainly is made of above-mentioned electric receiver module, Optical Receivers, comparer, electrooptic conversion module, photoelectric conversion module and oscillograph, this device can receive fast, accurately and efficiently the transient state harassing and wrecking and produce the space electromagnetic disturbance of moment, and the test of harassing signal for transformer station's transient state provides trigger pip accurately.This device adopts photoelectric isolation technology to be placed near high-tension apparatus.
Description of drawings
Fig. 1 is structured flowchart of the present utility model;
Fig. 2 is concrete structure block diagram of the present utility model;
Fig. 3 is the circuit diagram of Optical Receivers in the utility model.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments:
Transformer station's transient state harassing and wrecking test photoelectric trigger device in figure shown in 1 ~ 3, it comprises electric receiver module, Optical Receivers, comparer, electrooptic conversion module, photoelectric conversion module and oscillograph, wherein, described electric receiver module is connected signal output part and is connected respectively the signal input part of comparer with Optical Receivers, the output terminal of comparer connects photoelectric conversion module by electrooptic conversion module, and the output terminal of described photoelectric conversion module connects oscillograph.
In technique scheme, described electrooptic conversion module and photoelectric conversion module all have at least one, connect by optical fiber between each electrooptic conversion module and corresponding photoelectric conversion module.In order to ensure receiving the opening and closing lock electromagnetic interference (EMI) of moment, optical trigger need to be placed near high-tension switch gear, from considerations such as personal safety and earth potentials, need to carry out isolation processing, and the utility model utilizes optical-fibre communications to carry out the photoelectricity isolation.Electrooptic conversion module is converted to light signal output with electric signal, by optical fiber, signal is sent, and light signal is exported to oscillograph after photoelectric conversion module is reduced to electric signal, trigger pip is provided.Above-mentioned electrooptic conversion module, photoelectric conversion module and optical fiber have been realized the opto-electronic conversion isolation.
In technique scheme, electric receiver module comprises flagpole antenna and the modulate circuit that is connected with flagpole antenna, and modulate circuit connects the signal input part of comparer.Above-mentioned flagpole antenna receives electromagnetic interference signal, sends into the signal input part of comparer after the TVS pipe amplitude limit through two-way 5V.
In technique scheme, Optical Receivers comprises infrared receiving chip and resistance R 1, the feeder ear VCC of infrared receiving chip connects power supply VCC, contact resistance R1 between the light signal input end of infrared receiving chip and feeder ear VCC, the earth terminal ground connection of described infrared receiving chip.Above-mentioned infrared receiving chip is highly sensitive infrared receiving chip LF0038, this infrared receiving chip can receive the infrared signal in opening and closing lock moment generation electromagnetic interference signal, this signal output level when not disturbing is VCC, output voltage is reduced to close to 0 when disturbing generation, can compare by comparer and a stable level accordingly, be output as light ratio than output signal.
In technique scheme, it also comprises amplifier, and the signal output part of comparer connects electrooptic conversion module by amplifier.
In technique scheme, the ultrahigh-speed comparator AD8612 that comparer selects U.S. ADI company to release, be about 4ns the time delay of this ultrahigh-speed comparator, AC transmission system with respect to 50Hz, cycle 20ms, can ignore time delay, can satisfy accurately determining of the opening and closing lock moment fully.
In technique scheme, electrooptic conversion module adopts the Agilent highly integrated electric light conversion chip HFBR1414 of company to coordinate resistance to realize this transfer process, and the size of resistance is determined according to the distance of required transmission.Transmission range can reach hundreds of rice, can satisfy the needs of actual test process fully.
In technique scheme, photoelectric conversion module adopts the Agilent highly integrated opto-electronic conversion chip HFBR2412 of company.
Operating voltage of the present utility model is selected 5V, by the lithium battery power supply that is not less than 7V, is converted to 5V through power supply chip LM7805 power supply is provided.This device power consumption is lower, but adopts the work of jumbo battery long-time continuous stable.For avoiding electromagnetic interference influence in operating process, circuit part all will be placed in the good can of shielding.
The course of work of the present utility model is: optical trigger receives the electromagnetic interference (EMI) in transformer substation switch equipment (isolating switch or disconnector) operation (separating brake or combined floodgate) moment space by flagpole antenna and infrared receiving chip, produce a level sudden change, the transient state process for other signals of oscilloscope measurement after the opto-electronic conversion isolation provides a trigger pip.
The content that this instructions is not described in detail belongs to the known prior art of this area professional and technical personnel.
Claims (5)
1. transformer station transient state harassing and wrecking are tested and are used photoelectric trigger device, it is characterized in that: it comprises electric receiver module, Optical Receivers, comparer, electrooptic conversion module, photoelectric conversion module and oscillograph, wherein, described electric receiver module is connected signal output part and is connected respectively the signal input part of comparer with Optical Receivers, the output terminal of comparer connects photoelectric conversion module by electrooptic conversion module, and the output terminal of described photoelectric conversion module connects oscillograph.
2. transformer station according to claim 1 transient state harassing and wrecking are tested and are used photoelectric trigger device, it is characterized in that: described electrooptic conversion module and photoelectric conversion module all have at least one, connect by optical fiber between each electrooptic conversion module and corresponding photoelectric conversion module.
3. photoelectric trigger device is used in transformer station according to claim 1 transient state harassing and wrecking test, and it is characterized in that: described electric receiver module comprises flagpole antenna and the modulate circuit that is connected with flagpole antenna, and described modulate circuit connects the signal input part of comparer.
4. transformer station according to claim 1 transient state harassing and wrecking are tested and are used photoelectric trigger device, it is characterized in that: described Optical Receivers comprises infrared receiving chip and resistance R 1, the feeder ear VCC of described infrared receiving chip connects power supply VCC, contact resistance R1 between the light signal input end of infrared receiving chip and feeder ear VCC, the earth terminal GND ground connection of described infrared receiving chip.
5. photoelectric trigger device is used in a transformer station according to claim 1 transient state harassing and wrecking test, and it is characterized in that: it also comprises amplifier, and the signal output part of described comparer connects electrooptic conversion module by amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220707065 CN202975211U (en) | 2012-12-20 | 2012-12-20 | Photoelectric trigger device for transient disturbance test of transformer substation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220707065 CN202975211U (en) | 2012-12-20 | 2012-12-20 | Photoelectric trigger device for transient disturbance test of transformer substation |
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| Publication Number | Publication Date |
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| CN202975211U true CN202975211U (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220707065 Expired - Lifetime CN202975211U (en) | 2012-12-20 | 2012-12-20 | Photoelectric trigger device for transient disturbance test of transformer substation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033712A (en) * | 2012-12-20 | 2013-04-10 | 中国电力科学研究院 | Photoelectricity trigger device used for converting station transient state disturbance test and trigger method thereof |
| CN105301410A (en) * | 2015-11-20 | 2016-02-03 | 国家电网公司 | Method and device for online detection of electromagnetic compatibility performance of intelligent assembly of transformer substation |
| CN110749787A (en) * | 2019-09-24 | 2020-02-04 | 清华大学 | Electromagnetic disturbance testing method for direct-current power distribution transformation system |
-
2012
- 2012-12-20 CN CN 201220707065 patent/CN202975211U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033712A (en) * | 2012-12-20 | 2013-04-10 | 中国电力科学研究院 | Photoelectricity trigger device used for converting station transient state disturbance test and trigger method thereof |
| CN103033712B (en) * | 2012-12-20 | 2015-07-22 | 中国电力科学研究院 | Photoelectricity trigger device used for converting station transient state disturbance test and trigger method thereof |
| CN105301410A (en) * | 2015-11-20 | 2016-02-03 | 国家电网公司 | Method and device for online detection of electromagnetic compatibility performance of intelligent assembly of transformer substation |
| CN110749787A (en) * | 2019-09-24 | 2020-02-04 | 清华大学 | Electromagnetic disturbance testing method for direct-current power distribution transformation system |
| CN110749787B (en) * | 2019-09-24 | 2021-01-05 | 清华大学 | Electromagnetic disturbance testing method for direct-current power distribution transformation system |
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Granted publication date: 20130605 |
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| CX01 | Expiry of patent term |