CN107741551A - 110kV polarity testing device of current transformer - Google Patents

110kV polarity testing device of current transformer Download PDF

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Publication number
CN107741551A
CN107741551A CN201710942430.9A CN201710942430A CN107741551A CN 107741551 A CN107741551 A CN 107741551A CN 201710942430 A CN201710942430 A CN 201710942430A CN 107741551 A CN107741551 A CN 107741551A
Authority
CN
China
Prior art keywords
battery
switch
current transformer
power
branch road
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
CN201710942430.9A
Other languages
Chinese (zh)
Inventor
薛进财
陈宝生
何明凯
陈小龙
马建文
王磊
周乐
张凡
张一凡
孙瑞
袁嘉斌
杨玉静
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.)
Guo Wang Ningxia Electric Power Co Wuzhong Electric Co
Original Assignee
Guo Wang Ningxia Electric Power Co Wuzhong Electric Co
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 Guo Wang Ningxia Electric Power Co Wuzhong Electric Co filed Critical Guo Wang Ningxia Electric Power Co Wuzhong Electric Co
Priority to CN201710942430.9A priority Critical patent/CN107741551A/en
Publication of CN107741551A publication Critical patent/CN107741551A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/72Testing of electric windings

Abstract

The invention belongs to power industry technical field of test equipment, more particularly to a kind of 110kV polarity testing device of current transformer, it can not be shown to solve battery electric quantity in polarity test experiment in the prior art, intermittent circuit easy loose contact when being powered and be easily caused the technical problem of environmental pollution.Including:Power module and measurement display module;Power module is electrically connected by p-wire with current transformer primary side, and measurement display module is electrically connected by p-wire with Current Transformer Secondary side;Wherein, power module, including:Tie point, the second branch road and the 3rd branch road parallel with one another.Compared with the prior art, the present invention uses rechargeable lithium battary as power supply, while sets electric-quantity display device, intermittent power-on switch and charging circuit, so that electricity can be shown, prevent circuit loose contact phenomenon in experiment, improve test efficiency, while reduce environmental pollution.

Description

110kV polarity testing device of current transformer
Technical field
The invention belongs to power industry testing equipment field, more particularly to a kind of 110kV current transformer polarity testings to fill Put.
Background technology
The polarity test experiment of 110kV current transformers, being in transformer station newly puts into operation the work such as examination and overhaul must not Whether the work that can lack, the polarity the purpose is to test Current Transformer Secondary side meet the requirement protected, measure, measured, if Current Transformer Secondary side winding polarity can then cause the consequences such as protection device malfunction and measuring error into reversed polarity.At present Current transformer polarity testing is more with the following method:Primary side, an operating personnel with a hand self-contained battery and test wire, Another hand carries out intermittent power supply, and secondary side, another one operating personnel is at terminal box by ammeter string to current transformer In winding, the direction of rotation of ammeter pointer is observed.If ammeter pointer turns clockwise, for positive polarity, counterclockwise, then for Reversed polarity.
During polarity test experiment is carried out, operating personnel needs to keep disconnection and connection between battery and p-wire with hand, To realize intermittent energization, on the one hand because operating personnel needs to wear insulating glove, dry cell can not be secured firmly in hand, So that when intermittence is powered, loose contact is easily caused so that experiment is repeated, and reduces test efficiency;On the other hand, Dry cell electricity can not be shown, it is impossible to it is determined that whether the electricity of battery used meets onsite application requirement, if not meeting, tested Shi Caineng has found, need to re-replace satisfactory battery again, cause battery time longer, also reduce test efficiency; Meanwhile dry cell can not be reused, environmental pollution is also resulted in after discarded;Therefore, a kind of novel current transformer polarity is needed badly Test device.
The content of the invention
It can not be shown to solve battery electric quantity in 110kV current transformer polarity testings experiment in the prior art, be intermittent The easy loose contact of circuit and the technical problem of environmental pollution is easily caused during energization, the present invention provides a kind of 110kV current transformers Polarity test device, to improve test efficiency.
In order to solve the above technical problems, 110kV polarity testing device of current transformer provided by the invention, including:Power supply Module and measurement display module;Power module is electrically connected by p-wire with current transformer primary side, and measurement display module leads to P-wire is crossed to electrically connect with Current Transformer Secondary side;
Wherein, power module, including:Tie point, the second branch road and the 3rd branch road parallel with one another;
Tie point, including:Intermittent power-on switch, the first battery, the second battery are sequentially connected in series;The negative pole of first battery Switched by voltage-regulation and electrically connected with the negative pole of the second battery;First battery and the second battery are chargeable lithium cell;Examination When testing, by disconnecting and closing intermittent power-on switch, intermittent be powered is realized;The size of supply voltage, is directly connected to electricity The size of current transformer secondary winding electric current, for different current transformers, set voltage-regulation to switch, make primary side power supply Supply voltage can select as needed.When closing voltage-regulation switch, only the first battery is powered as power supply;Off voltage During adjusting switch, the first battery and the second battery are together in series and powered as power supply;
Second branch road, including:Electricity display switch, electric-quantity display device concatenation;Electric-quantity display device is Coulomb meter lithium battery Measure display;Electricity display switch is closed, the electricity of battery can be shown.
3rd branch road, including:Charging circuit, charge switch concatenation;Charging circuit input socket electrically connects with external power source; The delivery outlet of charging circuit is connected by charge switch with the first battery and the second battery both ends for being used as power supply, is closed charging and is opened Close, charging circuit charges to the first battery and the second battery.
Tie point, the second branch road and the 3rd branch circuit parallel connection;
Intermittent power-on switch, the one end not being connected with the first battery, by p-wire and current transformer primary side just Pole connects;The negative pole of second battery, it is connected by p-wire with current transformer primary side negative pole.
It is preferred that also include:Casing, case lid is set thereon;Test panel, power module and measurement display are set in casing Module;The intermittent power-on switch, voltage-regulation switch, electric-quantity display device, electricity display switch, charge switch, charging electricity Road input socket and measurement display module are arranged on test panel;
Battery case and charging circuit is fixedly installed in casing inner bottom surface, and the first described battery and the second electricity are set in battery case Pond.
Beneficial effect of the present invention includes:
Compared with the prior art, polarity test device provided by the invention, using rechargeable lithium battary as power supply Power supply, while electric-quantity display device, intermittent power-on switch and charging circuit are set so that electricity can be shown, prevented in experiment Wiring circuit contact bad phenomenon, test efficiency is improved, while reduce environmental pollution.
Brief description of the drawings
In the accompanying drawings:
Fig. 1 is the circuit connecting relation schematic diagram of the present invention;
Fig. 2 is the structural representation of the present invention;
Fig. 3 is test panel structural representation in the present invention.
Description of reference numerals:1 power module;10 first batteries;11 second batteries;12 electric-quantity display devices;13 charging circuits; 14 charging circuit input sockets;15 voltage-regulations switch;16 intermittent power-on switch;17 electricity display switches;18 charge switch; 19 battery cases;2 measurement display modules;3 current transformers;4 casings;40 case lids;5 test panels.
Embodiment
Below in conjunction with the accompanying drawings, with specific embodiment, the present invention will be described in detail.
As shown in fig.1, the 110kV polarity testing device of current transformer that the present embodiment provides, including:Power module 1 And measurement display module 2;Power module 1 is electrically connected by p-wire with the primary side of current transformer 3, and measurement display module 2 is logical P-wire is crossed to electrically connect with the secondary side of current transformer 3;
Wherein, power module 1, including:Tie point, the second branch road and the 3rd branch road parallel with one another;
Tie point, including:Intermittent power-on switch 16, the first battery 10, the second battery 11 are sequentially connected in series;First battery 10 negative pole is electrically connected by voltage-regulation switch 15 with the negative pole of the second battery 11;First battery 10 and the second battery 11 are Chargeable lithium cell;
Second branch road, including:Electricity display switch 17, electric-quantity display device 12 concatenate;Electric-quantity display device 12 is Coulomb meter lithium Electric quantity indicator;
3rd branch road, including:Charging circuit 13, charge switch 18 concatenate;Charging circuit input socket 14 and external power source Electrical connection;
Tie point, the second branch road and the 3rd branch circuit parallel connection;
Intermittent power-on switch 16, the one end not being connected with the first battery 10, by p-wire and current transformer 3 once Side positive pole connection;The negative pole of second battery 11, it is connected by p-wire with the primary side negative pole of current transformer 3.
It is preferred that as shown in fig.2, also include:Casing 4, case lid 40 is set thereon;The interior setting test panel 5 of casing 4, Power module 1 and measurement display module 2;Intermittent power-on switch S1, voltage-regulation switch S2, electric-quantity display device 12, electricity show Show that switch 17, charge switch 18, charging circuit input socket 14 and measurement display module 2 are arranged on test panel;
Battery case 19 and charging circuit 13 is fixedly installed in the inner bottom surface of casing 1, and the first battery 10 and the are set in battery case 19 Two batteries 11.
In summary, scheme provided in an embodiment of the present invention, compared with prior art, using rechargeable lithium battary conduct Power supply, while electric-quantity display device, intermittent power-on switch and charging circuit are set so that electricity can be shown, prevent examination Middle circuit loose contact phenomenon is tested, improves test efficiency, while reduce environmental pollution.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to comprising including these changes and modification.

Claims (2)

  1. A kind of 1. 110kV polarity testing device of current transformer, it is characterised in that including:Power module and measurement display module; Power module is electrically connected by p-wire with current transformer primary side, and measurement display module passes through p-wire and current transformer Secondary side electrically connects;
    Wherein, power module, including:Tie point, the second branch road and the 3rd branch road parallel with one another;
    Tie point, including:Intermittent power-on switch, the first battery, the second battery are sequentially connected in series;The negative pole of first battery passes through Voltage-regulation switch electrically connects with the negative pole of the second battery;First battery and the second battery are chargeable lithium cell;
    Second branch road, including:Electricity display switch, electric-quantity display device concatenation;Electric-quantity display device is that Coulomb meter electric quantity of lithium battery shows Show device;
    3rd branch road, including:Charging circuit, charge switch concatenation;Charging circuit input socket electrically connects with external power source;
    Tie point, the second branch road and the 3rd branch circuit parallel connection;
    Intermittent power-on switch, the one end not being connected with the first battery, connected by p-wire and current transformer primary side positive pole Connect;The negative pole of second battery, it is connected by p-wire with current transformer primary side negative pole.
  2. 2. 110kV polarity testing device of current transformer as claimed in claim 1, it is characterised in that also include:Casing, its Upper setting case lid;Test panel, power module and measurement display module are set in casing;The intermittent power-on switch, voltage Adjusting switch, electric-quantity display device, electricity display switch, charge switch, charging circuit input socket and measurement display module are all provided with Put on test panel;
    Battery case and charging circuit is fixedly installed in casing inner bottom surface, and described the first battery and the second battery are set in battery case.
CN201710942430.9A 2017-10-11 2017-10-11 110kV polarity testing device of current transformer Pending CN107741551A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710942430.9A CN107741551A (en) 2017-10-11 2017-10-11 110kV polarity testing device of current transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710942430.9A CN107741551A (en) 2017-10-11 2017-10-11 110kV polarity testing device of current transformer

Publications (1)

Publication Number Publication Date
CN107741551A true CN107741551A (en) 2018-02-27

Family

ID=61237268

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710942430.9A Pending CN107741551A (en) 2017-10-11 2017-10-11 110kV polarity testing device of current transformer

Country Status (1)

Country Link
CN (1) CN107741551A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108931754A (en) * 2018-09-26 2018-12-04 云南电网有限责任公司电力科学研究院 A kind of current transformer polarity and secondary winding use detection method with

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108931754A (en) * 2018-09-26 2018-12-04 云南电网有限责任公司电力科学研究院 A kind of current transformer polarity and secondary winding use detection method with

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