CN108037408A - A kind of system and method for detection cable conductor switching performance - Google Patents

A kind of system and method for detection cable conductor switching performance Download PDF

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Publication number
CN108037408A
CN108037408A CN201711271094.6A CN201711271094A CN108037408A CN 108037408 A CN108037408 A CN 108037408A CN 201711271094 A CN201711271094 A CN 201711271094A CN 108037408 A CN108037408 A CN 108037408A
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CN
China
Prior art keywords
tested
sample
conductor
contrast
voltage
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.)
Pending
Application number
CN201711271094.6A
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Chinese (zh)
Inventor
邓显波
欧阳本红
王少华
刘松华
陈铮铮
李文杰
王昱力
李利红
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.)
State Grid Corp of China SGCC
State Grid Zhejiang Electric Power Co Ltd
China Electric Power Research Institute Co Ltd CEPRI
Original Assignee
State Grid Corp of China SGCC
State Grid Zhejiang Electric Power Co Ltd
China Electric Power Research Institute Co Ltd CEPRI
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
Application filed by State Grid Corp of China SGCC, State Grid Zhejiang Electric Power Co Ltd, China Electric Power Research Institute Co Ltd CEPRI filed Critical State Grid Corp of China SGCC
Priority to CN201711271094.6A priority Critical patent/CN108037408A/en
Publication of CN108037408A publication Critical patent/CN108037408A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

The present invention provides a kind of system and method for detection cable conductor switching performance, the system comprises：Conductor is contrasted, it is connected by connection unit with one end of sample to be tested, for comparing its size with sample both end voltage to be tested, wherein, the sample to be tested is the connecting tube of a part for two conductors comprising crimping；Power supply unit, it forms test loop, the power supply unit is used to provide low voltage direct current for test loop by connection unit and sample to be tested and contrast conductor series connection；Voltage measurement unit, it with sample to be tested and contrast conductor series connection, during for flowing through low voltage direct current in the test loop, measuring sample to be tested and contrasting the voltage at conductor both ends respectively respectively；Multiple connection units, it is used for sample to be tested, contrast conductor and power supply unit series connection.The system judges reliability that cable conductor connects by the synchronous voltage for detecting sample to be tested and contrasting conductor both ends.

Description

A kind of system and method for detection cable conductor switching performance
Technical field
It is the present invention relates to technical field of measurement and test, and more particularly, to a kind of detection cable conductor switching performance System and its method.
Background technology
In practical applications, needed during two cable connections by connector, and a step very crucial in erection joint Suddenly connected for conductor, i.e., using the conductor connecting tube of appropriate specification, by two sections of cable conductors by way of mechanical pressure it is permanent Link together.Conductor connection state quality will determine cable whether can at a temperature of normal duty state permanent worker Make, GB/T 9327-2008 provides that the resistivity of cable conductor junction should be less than the resistivity of the cable conductor of same cross-sectional. Conversely, when if the resistivity of conductor connection is higher than the resistivity of cable conductor, when being run under cable normal duty, conductor connects The temperature meeting higher at place is connect, current-carrying capacity of cable is reduced, cable breakdown or fire is also resulted in when serious.
Apply high current progress heat by the cable conductor to connecting and connection gold utensil test loop in type approval test to follow Ring test is come the resistivity testing and examine connection gold utensil, but no test method examines conductor connection for construction site Whether qualified, cable conductor is general after crimping is good at present only sees whether junction is normal by visual examination, therefore, it is impossible to Ensure the reliability of conductor connection.
The content of the invention
In order to solve the problems, such as can not to verify cable conductor connection reliability, this hair existing for background technology at the construction field (site) It is bright that a kind of system of detection cable conductor switching performance is provided, the system comprises：
Conductor is contrasted, it is connected by connection unit with one end of sample to be tested, for comparing itself and sample to be tested The size of both end voltage, wherein, the sample to be tested is the connecting tube of a part for two conductors comprising crimping；
Power supply unit, it forms test loop, the electricity by connection unit and sample to be tested and contrast conductor series connection Source unit is used to provide low voltage direct current for test loop；
Voltage measurement unit, it is connected with sample to be tested and contrast conductor respectively, for being flowed in the test loop When crossing low voltage direct current, sample to be tested is measured respectively and contrasts the voltage at conductor both ends；
Multiple connection units, it is used for sample to be tested, contrast conductor and power supply unit series connection.
Further, the length and the voltage at sample both ends to be tested between the voltage measurement point at the contrast conductor both ends Equal length between measurement point, and the contrast conductor is identical with the section of sample to be tested.
Further, the system also includes adjustable resistance, it is connected with power supply unit, for adjusting power supply unit output Electric current value.
Further, the voltage measurement unit uses digital capture card, wherein, the digital capture card can be synchronous Measure sample to be tested and contrast the voltage between conductor both ends.
Further, each connection unit includes 1 connecting wire and 2 connection gold utensils, wherein, the connection is led Every one end of line is fixedly connected with a connection gold utensil, each connection gold utensil respectively with power supply unit, sample to be tested and One end of contrast conductor is fixedly connected.
Further, the connecting wire is that section is no less than 25mm2Annealed copper wire.
Further, the connection gold utensil is by the way of soft copper band adds bolt firm.
Further, the soft copper bandwidth 5mm, thick 5mm.
Further, connected between the soft copper band and connecting wire using welding manner.
According to another aspect of the present invention, the present invention provides a kind of method of detection cable connection conductor performance, the side Method includes：
By sample to be tested and contrast conductor be fixedly connected by connection unit, by power supply unit respectively with it is to be tested One end of sample and contrast conductor is fixedly connected by connection unit, forms test loop；
Sample to be tested is connected with voltage measurement unit respectively with the voltage measurement point at contrast conductor both ends；
Power supply unit provides low voltage direct current for test loop；
Sample to be tested is measured by voltage measurement unit and contrasts the voltage at conductor both ends；
When the voltage at sample both ends to be tested is less than or equal to the voltage at contrast conductor both ends, due to flowing through test loop Electric current is identical, then the D.C. resistance of sample to be tested is less than or equal to the D.C. resistance of contrast conductor, can determine that sample two to be tested The cable connectivity at end is reliable, when the voltage at sample both ends to be tested is more than the voltage at contrast conductor both ends, is surveyed due to flowing through The electric current in examination circuit is identical, then the D.C. resistance of sample to be tested is more than the D.C. resistance of contrast conductor, can determine that sample to be tested The cable connectivity at product both ends is unreliable.
Further, the big I for the low voltage direct current that the power supply unit provides for test loop passes through adjustable resistance It is adjusted.
Further, power supply unit is that the scope for the low voltage direct current that test loop provides is 10A~20A.
In the present invention, system and method for the present invention provide stable low voltage direct current by power supply unit, And the voltage that the connecting tube to be tested for having crimped conductor and contrast conductor both ends are measured using high-precision voltage measurement unit is big It is small, it can directly judge whether cable conductor connects qualification, the system has do interference, stability strong, high certainty of measurement, mistake Difference is small, and system bulk is small, it is easy to carry the advantages that, solve well it is existing in the prior art can not be present in construction Effectively judge the technical problem of cable conductor connection reliability.
Brief description of the drawings
By reference to the following drawings, the illustrative embodiments of the present invention can be more fully understood by：
Fig. 1 is the structure chart of the system of the detection cable conductor switching performance of the specific embodiment of the invention；
Fig. 2 is the structure chart of the system of the detection cable conductor switching performance of another embodiment of the present invention；
Fig. 3 is the flow chart of the method for the detection cable conductor switching performance of the specific embodiment of the invention.
Embodiment
The illustrative embodiments of the present invention are introduced referring now to attached drawing, however, the present invention can use many different shapes Formula is implemented, and is not limited to the embodiment described herein, there is provided these embodiments are to disclose at large and fully The present invention, and fully pass on the scope of the present invention to person of ordinary skill in the field.Show for what is be illustrated in the accompanying drawings Term in example property embodiment is not limitation of the invention.In the accompanying drawings, identical cells/elements use identical attached Icon is remembered.
Unless otherwise indicated, term (including scientific and technical terminology) used herein has person of ordinary skill in the field It is common to understand implication.Further it will be understood that the term limited with usually used dictionary, be appreciated that and its The linguistic context of association area has consistent implication, and is not construed as Utopian or overly formal meaning.
Fig. 1 is the structure chart of the system of the detection cable conductor switching performance of the specific embodiment of the invention.Such as Fig. 1 institutes Show, the system 100 of detection cable conductor switching performance of the present invention includes：
Contrast conductor 101, its one end C1Pass through connection unit 105 and one end B of sample 102 to be tested1Series connection, wherein, institute State the connecting tube that sample 102 to be tested is a part for two conductors comprising crimping；
Power supply unit 103, it passes through one end A with sample 102 to be tested respectively of connection unit 1051With contrast conductor 101 One end D1Series connection, forms test loop, the power supply unit 103 is used to provide low voltage direct current for test loop, at this In embodiment, test current is provided by constant current source module；
Voltage measurement unit 104, its respectively the ends A with sample 102 to be tested, B and contrast conductor 101 both ends C, D Connection, during for flowing through low voltage direct current in the test loop, measures the voltage U at 102 both ends of sample to be tested respectivelyAB With the voltage U at 101 both ends of contrast conductorCD；
Multiple connection units 105, it is used to connect sample 102 to be tested, contrast conductor 101 and power supply unit 103.
Preferably, the length L between voltage measurement point C, D at the contrast conductor both endsCDWith sample both ends to be tested Length L between voltage measurement point A, BABIt is equal, and the contrast conductor is identical with the section of sample to be tested.
Preferably, the system also includes adjustable resistance 106, it is connected with power supply unit 103, for adjusting power supply unit The value of the electric current of 103 outputs.
Fig. 2 is the structure chart of the system of the detection cable conductor switching performance of another embodiment of the present invention.Such as Shown in Fig. 2, in the present embodiment, the power supply unit 103 be connected with adjustable resistance after again respectively with sample 102 to be tested One end A1With one end D of contrast conductor 1011Series connection, for the value of the electric current of adjustment power supply unit output.
Preferably, the voltage measurement unit 104 uses digital capture card, wherein, the digital capture card can be same Voltage between pacing amount sample to be tested and contrast conductor both ends.
Preferably, each connection unit 105 includes 1 connecting wire and 2 connection gold utensils, wherein, the connection Every one end of conducting wire is fixedly connected with a connection gold utensil, each connection gold utensil respectively with power supply unit, sample to be tested It is fixedly connected with one end of contrast conductor.
Preferably, the connecting wire is that section is no less than 25mm2Annealed copper wire.
Preferably, the connection gold utensil is by the way of soft copper band adds bolt firm.
Preferably, the soft copper bandwidth 5mm, thick 5mm.
Preferably, connected between the soft copper band and connecting wire using welding manner.
Preferably, the power supply unit for test loop provide low voltage direct current big I by adjustable resistance into Row is adjusted.
Preferably, power supply unit is that the scope for the low voltage direct current that test loop provides is 10A~20A.
Fig. 3 is the flow chart of the method for the detection cable conductor switching performance of the specific embodiment of the invention.Such as Fig. 3 institutes Show, the method 300 is since step 301.
In step 301, sample to be tested and contrast conductor are fixedly connected by connection unit, by power supply unit point One end not with sample to be tested and contrast conductor is fixedly connected by connection unit, forms test loop；
In step 302, sample voltage measurement point A, B to be tested and voltage measurement point C, D at contrast conductor both ends are distinguished It is connected with voltage measurement unit；
In step 303, power supply unit provides low voltage direct current for test loop；
In step 304, the voltage U at sample both ends to be tested is measured by voltage measurement unitABWith contrast conductor both ends Voltage UCD；
In step 305, work as UABLess than or equal to UCDWhen, since the electric current for flowing through test loop is identical, then sample to be tested D.C. resistance is less than or equal to the D.C. resistance of contrast conductor, can determine that the cable connectivity at sample both ends to be tested is reliable, works as UAB More than UCDWhen, since the electric current for flowing through test loop is identical, then the D.C. resistance of sample to be tested is more than the direct current of contrast conductor Resistance, can determine that the cable connectivity at sample both ends to be tested is unreliable.
Normally, all terms used in the claims are all solved according to them in the common meaning of technical field Release, unless in addition clearly being defined wherein.All references " one/described/be somebody's turn to do【Device, component etc.】" all it is opened ground At least one example being construed in described device, component etc., unless otherwise expressly specified.Any method disclosed herein Step need not all be run with disclosed accurately order, unless explicitly stated otherwise.

Claims (12)

  1. A kind of 1. system of detection cable conductor switching performance, it is characterised in that the system comprises：
    Conductor is contrasted, it is connected by connection unit with one end of sample to be tested, for comparing itself and sample both ends to be tested The size of voltage, wherein, the sample to be tested is the connecting tube of a part for two conductors comprising crimping；
    Power supply unit, it forms test loop, the power supply list by connection unit and sample to be tested and contrast conductor series connection Member is used to provide low voltage direct current for test loop；
    Voltage measurement unit, it is connected with sample to be tested and contrast conductor respectively, low for being flowed through in the test loop When pressing DC current, sample to be tested is measured respectively and contrasts the voltage at conductor both ends；
    Multiple connection units, it is used for sample to be tested, contrast conductor and power supply unit series connection.
  2. 2. device according to claim 1, it is characterised in that the length between the voltage measurement point at the contrast conductor both ends Equal length between degree and the voltage measurement point at sample both ends to be tested, and the section of the contrast conductor and sample to be tested It is identical.
  3. 3. device according to claim 1, it is characterised in that the system also includes adjustable resistance, itself and power supply unit Connection, the value of the electric current for adjusting power supply unit output.
  4. 4. device according to claim 1, it is characterised in that the voltage measurement unit uses digital capture card, its In, voltage that the digital capture card can be between synchro measure sample to be tested and contrast conductor both ends.
  5. 5. device according to claim 1, it is characterised in that each connection unit includes 1 connecting wire and 2 Connection gold utensil, wherein, every one end of the connecting wire is fixedly connected with a connection gold utensil, the connection gold utensil respectively with electricity Source unit, sample to be tested are fixedly connected with one end of contrast conductor.
  6. 6. device according to claim 5, it is characterised in that the connecting wire is that section is no less than 25mm2Soft copper Line.
  7. 7. device according to claim 5, it is characterised in that the connection gold utensil adds the firm side of bolt using soft copper band Formula.
  8. 8. device according to claim 7, it is characterised in that the soft copper bandwidth 5mm, thick 5mm.
  9. 9. according to the device described in claim 7 or 8, it is characterised in that using weldering between the soft copper band and connecting wire The mode of connecing connects.
  10. A kind of 10. method of detection cable connection conductor performance, it is characterised in that the described method includes：
    By sample to be tested and contrast conductor be fixedly connected by connection unit, by power supply unit respectively with sample to be tested It is fixedly connected with one end of contrast conductor by connection unit, forms test loop；
    Sample to be tested is connected with voltage measurement unit respectively with the voltage measurement point at contrast conductor both ends；
    Power supply unit provides low voltage direct current for test loop；
    Sample to be tested is measured by voltage measurement unit and contrasts the voltage at conductor both ends；
    When the voltage at sample both ends to be tested is less than or equal to the voltage at contrast conductor both ends, due to flowing through the electric current of test loop Identical, then the D.C. resistance of sample to be tested is less than or equal to the D.C. resistance of contrast conductor, can determine that sample both ends to be tested Cable connectivity is reliable, when the voltage at sample both ends to be tested is more than the voltage at contrast conductor both ends, is tested back due to flowing through The electric current on road is identical, then the D.C. resistance of sample to be tested is more than the D.C. resistance of contrast conductor, can determine that sample two to be tested The cable connectivity at end is unreliable.
  11. 11. according to the method described in claim 10, it is characterized in that, the power supply unit is the low-pressure direct that test loop provides The big I of galvanic electricity stream is adjusted by adjustable resistance.
  12. 12. according to the method described in claim 10, it is characterized in that, power supply unit is the low-voltage DC that test loop provides The scope of stream is 10A~20A.
CN201711271094.6A 2017-12-05 2017-12-05 A kind of system and method for detection cable conductor switching performance Pending CN108037408A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711271094.6A CN108037408A (en) 2017-12-05 2017-12-05 A kind of system and method for detection cable conductor switching performance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711271094.6A CN108037408A (en) 2017-12-05 2017-12-05 A kind of system and method for detection cable conductor switching performance

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109631733A (en) * 2018-12-07 2019-04-16 国网江苏省电力有限公司电力科学研究院 In be pressed into disk cable conductor performance intelligent detection device and system
CN110441646A (en) * 2019-08-23 2019-11-12 江苏省送变电有限公司 A kind of GIL conducting rod connection evaluation system and method based on resistive potential difference ratio

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2594802Y (en) * 2002-11-15 2003-12-24 陈志行 Digital capacitance meter with wide measurement range
US20060289395A1 (en) * 2005-06-28 2006-12-28 Nissan Motor Co., Ltd. Cable monitoring system and monitoring method thereof
CN205665317U (en) * 2016-06-12 2016-10-26 四川网达科技有限公司 Cable is to ground parameter testing appearance
CN106841809A (en) * 2016-12-28 2017-06-13 国家电网公司 Multifunctional cable tester

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2594802Y (en) * 2002-11-15 2003-12-24 陈志行 Digital capacitance meter with wide measurement range
US20060289395A1 (en) * 2005-06-28 2006-12-28 Nissan Motor Co., Ltd. Cable monitoring system and monitoring method thereof
CN205665317U (en) * 2016-06-12 2016-10-26 四川网达科技有限公司 Cable is to ground parameter testing appearance
CN106841809A (en) * 2016-12-28 2017-06-13 国家电网公司 Multifunctional cable tester

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109631733A (en) * 2018-12-07 2019-04-16 国网江苏省电力有限公司电力科学研究院 In be pressed into disk cable conductor performance intelligent detection device and system
CN110441646A (en) * 2019-08-23 2019-11-12 江苏省送变电有限公司 A kind of GIL conducting rod connection evaluation system and method based on resistive potential difference ratio
CN110441646B (en) * 2019-08-23 2021-05-18 江苏省送变电有限公司 GIL conducting rod connection evaluation system and method based on resistive potential difference ratio

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Application publication date: 20180515