CN205898949U - Join in marriage quick detection device of power system fault - Google Patents

Join in marriage quick detection device of power system fault Download PDF

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Publication number
CN205898949U
CN205898949U CN201620580495.4U CN201620580495U CN205898949U CN 205898949 U CN205898949 U CN 205898949U CN 201620580495 U CN201620580495 U CN 201620580495U CN 205898949 U CN205898949 U CN 205898949U
Authority
CN
China
Prior art keywords
resistance
connects
electric capacity
signal
operational amplifier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201620580495.4U
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Chinese (zh)
Inventor
王君
谢育良
钟才惠
刘维强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhongke Taihe Green Energy (guangzhou) Co Ltd
Original Assignee
Zhongke Taihe Green Energy (guangzhou) Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to CN201620580495.4U priority Critical patent/CN205898949U/en
Application granted granted Critical
Publication of CN205898949U publication Critical patent/CN205898949U/en
Expired - Fee Related legal-status Critical Current
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
    • Y04S10/52Outage or fault management, e.g. fault detection or location

Abstract

The utility model discloses a join in marriage quick detection device of power system fault, which comprises an outer casing, be equipped with the display screen on the shell body, one side of shell body is equipped with the signal input interface, the opposite side of shell body is equipped with the signal output interface, the inside host system that is equipped with of shell body, host system includes microprocessor, the display module, alarm module and wireless transmission module, signal input interface connection signal collector on the shell body, be equipped with current transformer in the signal collector, voltage transformer, earth fault detector and signal amplification module and signal fast transmission module, the utility model discloses the structure principle is simple, can realize the short -term test to joining in marriage power system fault, and detects the precision height, ensures that the distribution network can safe normal operating.

Description

A kind of distribution network failure device for fast detecting
Technical field
This utility model is related to distribution network failure detection technique field, specially a kind of distribution network failure quick detection dress Put.
Background technology
Power system is the pillar of every activity of economy.With the fast development of national economy, energy demand increases substantially, Country increases the construction investment dynamics of power grid construction, and meanwhile, the monitoring to electrical network and measurement demand are also lifted continuous, and this is not But the needs of power industry self-management levels, are also the needs that modern society produces and lives, existing power distribution network Although detection means can detect distribution network failure to a certain extent, its accuracy of detection is low, anti-interference during signal transmission Poor performance, and insensitive to Weak fault signal reaction, easily cause power grid safety accident.
Utility model content
The purpose of this utility model is to provide a kind of distribution network failure device for fast detecting, to solve above-mentioned background technology The problem of middle proposition.
For achieving the above object, this utility model provides a kind of following technical scheme: distribution network failure device for fast detecting, Including shell body, described shell body is provided with display screen, and the side of described shell body is provided with signal input interface, described shell body Opposite side be provided with signal output interface, be provided with main control module inside described shell body, described main control module include microprocessor, Display module, alarm module and wireless transport module, on described shell body, signal input interface connects signal picker, described It is provided with current transformer, voltage transformer, ground fault detector and signal amplification module in signal picker and signal is fast Fast transport module, described current transformer, voltage transformer, ground fault detector are connected in power distribution network respectively, described electric current Transformer, voltage transformer, ground fault detector pass through signal amplification module, the quick transport module of signal connects main control module In microprocessor, described microprocessor connects display module, alarm module respectively, and connects electricity by wireless transport module Net monitoring center.
Preferably, described signal amplification module includes the first operational amplifier, two-stage field effect broadband amplifier and grips Streamline circle, an input of described first operational amplifier connects resistance b one end and electric capacity b one end, the electric capacity b other end respectively Ground connection, the resistance b other end connects resistance a one end and electric capacity a one end respectively, and the electric capacity a other end connects the first operational amplifier Outfan, another input of the first operational amplifier connects resistance c one end and resistance d one end, another termination of resistance c respectively Ground, the resistance d other end connects the outfan of the first operational amplifier;The first end of described two-stage field effect broadband amplifier connects Electric capacity e one end, the electric capacity e other end connects resistance f one end, and the resistance f other end connects the outfan of the first operational amplifier, two-stage Second end of field effect broadband amplifier connects electric capacity f one end, electric capacity g one end, electric capacity h one end respectively by choking-winding, and The electric capacity f other end, the electric capacity g other end, the electric capacity h other end are all grounded, and electricity is passed through at the 3rd end of two-stage field effect broadband amplifier Hold the outfan that d, resistance e connect the first operational amplifier, two-stage field effect broadband amplifier the 4th end is grounded.
Preferably, the quick transport module of described signal include the second operational amplifier, the 3rd operational amplifier and magnetic every From module, the electrode input end of described second operational amplifier connects resistance i one end and electric capacity i one end, the electric capacity i other end respectively Ground connection, the resistance i other end connects resistance g one end, resistance h one end, resistance j one end respectively, and the resistance j other end is grounded, and resistance h is another One end connects reference voltage end, and the resistance g other end connects signal input part, and the negative input of described second operational amplifier is even Connect outfan, the outfan of described second operational amplifier connects the positive pole input of the 3rd operational amplifier by Magnetic isolation module End, the negative input of described 3rd operational amplifier connects resistance k one end and resistance l one end respectively, and the resistance k other end connects Potentiometer sliding end, potentiometer is grounded, and the resistance l other end and the 3rd operational amplifier output terminal connect signal output part.
Compared with prior art, the beneficial effects of the utility model are:
(1) this utility model structural principle is simple, is capable of the quick detection to distribution network failure, and accuracy of detection Height is it is ensured that power distribution network can normally run safely.
(2) the signal amplification module that this utility model adopts can be amplified to Weak fault signal, be quick on the draw, carry The high fault detection efficiency of power distribution network.
(3) the signal quick transport module strong antijamming capability that this utility model adopts, is capable of fast to detection signal Speed transmission, it is ensured that when distribution network failure occurs, fault-signal can send to Surveillance center moment, improves distribution network failure inspection Repair efficiency.
Brief description
Fig. 1 is overall structure diagram of the present utility model;
Fig. 2 is control principle block diagram of the present utility model;
Fig. 3 is signal amplification module schematic diagram of the present utility model;
Fig. 4 is signal of the present utility model quick transport module schematic diagram.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out Clearly and completely description is it is clear that described embodiment is only a part of embodiment of this utility model rather than whole Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of making creative work The every other embodiment being obtained, broadly falls into the scope of this utility model protection.
Refer to Fig. 1-4, this utility model provides a kind of a kind of technical scheme: distribution network failure device for fast detecting, bag Include shell body 1, described shell body 1 is provided with display screen 2, and the side of described shell body 1 is provided with signal input interface 3, described outer The opposite side of housing 1 is provided with signal output interface 4, is provided with main control module 5 inside described shell body 1, and described main control module 5 includes Microprocessor 6, display module 7, alarm module 8 and wireless transport module 9, on described shell body 1, signal input interface 3 connects Signal picker 10, is provided with current transformer 11, voltage transformer 12, ground fault detector 13 in described signal picker 10 And signal amplification module 14 and the quick transport module of signal 15, described current transformer 11, voltage transformer 12, earth fault Detector 13 is connected in power distribution network respectively, and described current transformer 11, voltage transformer 12, ground fault detector 13 pass through letter Number amplification module 14, the quick transport module of signal 15 connect the microprocessor 6 in main control module 5, and described microprocessor 6 connects respectively Connect display module 7, alarm module 8, and power network monitoring center 16, this utility model structure are connected by wireless transport module 9 Principle is simple, is capable of the quick detection to distribution network failure, and accuracy of detection height is it is ensured that power distribution network can normally be transported safely OK.
In the present embodiment, signal amplification module 14 includes the first operational amplifier 17, two-stage field effect broadband amplifier 18 And choking-winding 19, an input of the first operational amplifier 17 connects resistance b 2a one end and electric capacity b 2b mono- respectively End, the electric capacity b 2b other end is grounded, and the resistance b 2a other end connects resistance a 1a one end and electric capacity a 1b one end, electric capacity a respectively The 1b other end connects the outfan of the first operational amplifier 17, and another input of the first operational amplifier 17 connects resistance respectively C 3a one end and resistance d 4a one end, the resistance c 3a other end is grounded, and the resistance d 4a other end connects the first operational amplifier 17 Outfan;The first end 181 of described two-stage field effect broadband amplifier 18 connects electric capacity e 5b one end, the electric capacity e 5b other end Connect resistance f 6a one end, the resistance f 6a other end connects the outfan of the first operational amplifier 17, and two-stage field effect broadband is put Second end 182 of big device 18 connects electric capacity f 6b one end, electric capacity g 7b one end, electric capacity h 8b mono- respectively by choking-winding 19 Hold, and the electric capacity f 6b other end, the electric capacity g 7b other end, the electric capacity h 8b other end are all grounded, two-stage field effect broadband amplifier 18 the 3rd end 183 connects the outfan of the first operational amplifier 17, two-stage field effect broadband by electric capacity d 4b, resistance e 5a Amplifier 18 the 4th end 184 is grounded.First operational amplifier 17 is processed the quality it is ensured that transmission signal to signal, and leads to Cross feedback principle and signal message is amplified 2 times, then pass to two-stage field effect broadband amplifier 18 below more again to letter Number carry out secondary amplification, finally again by signal output, the signal amplification module that this utility model adopts can be believed to Weak fault Number it is amplified, be quick on the draw, improve the fault detection efficiency of power distribution network.
In the present embodiment, the quick transport module of signal include the second operational amplifier 20, the 3rd operational amplifier 21 and Magnetic isolation module 22, the electrode input end of described second operational amplifier connects resistance i9a one end and electric capacity i 9b one end respectively, The electric capacity i 9b other end is grounded, and the resistance i 9a other end connects resistance g 7a one end, resistance h 8a one end, resistance j 10a respectively One end, the resistance j 10a other end is grounded, and the resistance h 8a other end connects reference voltage end, and the resistance g 7a other end connects signal Input, the negative input of described second operational amplifier 20 connects outfan, the output of described second operational amplifier 20 End connects the electrode input end of the 3rd operational amplifier 21, the negative pole of described 3rd operational amplifier 21 by Magnetic isolation module 22 Input connects resistance k 11a one end and resistance l 12a one end respectively, and the resistance k 11a other end connects potentiometer sliding end, electricity Position device 23 is grounded, and the resistance l 12a other end and the 3rd operational amplifier 21 outfan connect signal output part, and this utility model is adopted Signal quick transport module strong antijamming capability, is capable of the quick transmission to detection signal it is ensured that in distribution network failure During generation, fault-signal can send to Surveillance center moment, improves distribution network failure overhaul efficiency.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art, It is appreciated that these embodiments can be carried out with multiple changes in the case of without departing from principle of the present utility model and spirit, repair Change, replace and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.

Claims (3)

1. a kind of distribution network failure device for fast detecting, including shell body it is characterised in that: described shell body is provided with display Screen, the side of described shell body is provided with signal input interface, and the opposite side of described shell body is provided with signal output interface, described outer Enclosure interior is provided with main control module, and described main control module includes microprocessor, display module, alarm module and is wirelessly transferred mould Block, on described shell body, signal input interface connects signal picker, is provided with current transformer, voltage in described signal picker Transformer, ground fault detector and signal amplification module and the quick transport module of signal, described current transformer, voltage are mutual Sensor, ground fault detector are connected in power distribution network respectively, described current transformer, voltage transformer, ground fault detector Connect the microprocessor in main control module by signal amplification module, the quick transport module of signal, described microprocessor connects respectively Connect display module, alarm module, and power network monitoring center is connected by wireless transport module.
2. a kind of distribution network failure device for fast detecting according to claim 1 it is characterised in that: described signal amplifies mould Block includes the first operational amplifier, two-stage field effect broadband amplifier and choking-winding, and the one of described first operational amplifier Individual input connects resistance b one end and electric capacity b one end respectively, and the electric capacity b other end is grounded, and the resistance b other end connects resistance a respectively One end and electric capacity a one end, the electric capacity a other end connect the first operational amplifier outfan, the first operational amplifier another defeated Enter end and connect resistance c one end and resistance d one end respectively, the resistance c other end is grounded, and the resistance d other end connects the first operation amplifier The outfan of device;The first end of described two-stage field effect broadband amplifier connects electric capacity e one end, and the electric capacity e other end connects resistance f One end, the resistance f other end connects the outfan of the first operational amplifier, and the second end of two-stage field effect broadband amplifier is passed through to grip Streamline circle connects electric capacity f one end, electric capacity g one end, electric capacity h one end respectively, and the electric capacity f other end, the electric capacity g other end, electric capacity h are another One end is all grounded, and the 3rd end of two-stage field effect broadband amplifier connects the defeated of the first operational amplifier by electric capacity d, resistance e Go out end, two-stage field effect broadband amplifier the 4th end is grounded.
3. a kind of distribution network failure device for fast detecting according to claim 1 it is characterised in that: described signal quickly passes Defeated module includes the second operational amplifier, the 3rd operational amplifier and Magnetic isolation module, and described second operational amplifier is just Pole input connects resistance i one end and electric capacity i one end respectively, and the electric capacity i other end is grounded, and the resistance i other end connects resistance g respectively One end, resistance h one end, resistance j one end, the resistance j other end is grounded, and the resistance h other end connects reference voltage end, and resistance g is another End connects signal input part, and the negative input of described second operational amplifier connects outfan, described second operational amplifier Outfan by Magnetic isolation module connect the 3rd operational amplifier electrode input end, the negative pole of described 3rd operational amplifier Input connects resistance k one end and resistance l one end respectively, and the resistance k other end connects potentiometer sliding end, and potentiometer is grounded, electricity The resistance l other end and the 3rd operational amplifier output terminal connect signal output part.
CN201620580495.4U 2016-06-15 2016-06-15 Join in marriage quick detection device of power system fault Expired - Fee Related CN205898949U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620580495.4U CN205898949U (en) 2016-06-15 2016-06-15 Join in marriage quick detection device of power system fault

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620580495.4U CN205898949U (en) 2016-06-15 2016-06-15 Join in marriage quick detection device of power system fault

Publications (1)

Publication Number Publication Date
CN205898949U true CN205898949U (en) 2017-01-18

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Family Applications (1)

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CN201620580495.4U Expired - Fee Related CN205898949U (en) 2016-06-15 2016-06-15 Join in marriage quick detection device of power system fault

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108169675A (en) * 2018-02-09 2018-06-15 广东普悦电力设备有限公司 A kind of diesel-driven generator trouble-shooter
CN108872782A (en) * 2018-05-18 2018-11-23 江苏伊莱尔电力科技有限公司 A kind of mains by harmonics on-line measuring device and method
CN109375053A (en) * 2018-09-10 2019-02-22 湖南万护科技发展有限公司 A kind of smart grid detection system
CN110879087A (en) * 2019-12-30 2020-03-13 江苏特建技术股份有限公司 Operation and maintenance management equipment fault detection system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108169675A (en) * 2018-02-09 2018-06-15 广东普悦电力设备有限公司 A kind of diesel-driven generator trouble-shooter
CN108872782A (en) * 2018-05-18 2018-11-23 江苏伊莱尔电力科技有限公司 A kind of mains by harmonics on-line measuring device and method
CN109375053A (en) * 2018-09-10 2019-02-22 湖南万护科技发展有限公司 A kind of smart grid detection system
CN110879087A (en) * 2019-12-30 2020-03-13 江苏特建技术股份有限公司 Operation and maintenance management equipment fault detection system

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Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170118

Termination date: 20170615

CF01 Termination of patent right due to non-payment of annual fee