CN208477096U - Electronic current mutual inductor field calibration system - Google Patents

Electronic current mutual inductor field calibration system Download PDF

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Publication number
CN208477096U
CN208477096U CN201820217812.5U CN201820217812U CN208477096U CN 208477096 U CN208477096 U CN 208477096U CN 201820217812 U CN201820217812 U CN 201820217812U CN 208477096 U CN208477096 U CN 208477096U
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China
Prior art keywords
terminal
mutual inductor
calibration
current mutual
current
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CN201820217812.5U
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Chinese (zh)
Inventor
高帅
徐占河
赵林
袁瑞铭
丁恒春
易忠林
周丽霞
徐剑锋
王慧楠
姚敏
魏学鹏
袁建辉
Original Assignee
华北电力科学研究院有限责任公司
国网冀北电力有限公司电力科学研究院
国家电网公司
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Priority to CN201820217812.5U priority Critical patent/CN208477096U/en
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Abstract

The utility model provides a kind of electronic current mutual inductor field calibration system, and system includes: the single bus scheme of the electronic current mutual inductor of standard current transformer, current lifting device, calibration equipment and access subject;Wherein, in single bus scheme, the three-phase of two adjacent spaces respectively connects the electronic current mutual inductor of a subject, and two phase terminals (201) and terminal (204) that two adjacent spaces are closed on are respectively connected to current lifting device and standard current transformer, in the other two-phase at interval, terminal (202) is connected with terminal (203), and terminal (205) is connected with terminal (206).The utility model solves the problems, such as that testing process is cumbersome in current intelligent substation electronic current mutual inductor field-checking, improves the field-checking efficiency of electronic current mutual inductor.

Description

Electronic current mutual inductor field calibration system
Technical field
The utility model relates to power technologies, are concretely a kind of electronic current mutual inductor field calibration systems.
Background technique
With the continuous development of smart grid and intelligent substation key technology, China's intelligent substation welcomes explosion type increasing Long, smart machine quantity is also more and more in intelligent substation.For mutual inductor in substation, needed before putting into operation to its into Row field-checking, and the field-checking of the electronic mutual inductor come for intelligent substation, the electromagnetic type than traditional substation are mutual Sensor field-checking is more complicated, and required time is more.The field-checking of mutual inductor, which needs to have a power failure, to carry out, and period cannot be into Row cross-operation.Therefore, improve intelligent substation electronic mutual inductor field-checking working efficiency to the construction of intelligent substation, Put into operation, overhaul it is all significant.
In the prior art, in national grid company standard Q/GDW 690-2011 " electronic mutual inductor field-checking specification " The electronic current mutual inductor verification wiring diagram provided is as shown in Figure 1, using transducer check scheme shown in FIG. 1, every time only Field-checking can be carried out to an electronic current mutual inductor, one electronic current mutual inductor of every field-checking both needs to tear open Connect a p-wire, it is also necessary to disconnect second test line, while also testing equipment and auxiliary are moved according to the position of test item Equipment.
Utility model content
In order to promote the field-checking efficiency of electronic current mutual inductor, the utility model embodiment provides a kind of electronics Formula current transformer field calibration system, comprising: standard current transformer, current lifting device, calibration equipment and for access subject Electronic current mutual inductor single bus scheme;Wherein,
In single bus scheme, the three-phase of two adjacent spaces respectively connects the electronic current mutual inductor of a subject, and two-phase Neighbour's two phase terminals (201) for closing on of interval and terminal (204) are respectively connected to current lifting device and standard current transformer, interval it is another In outer two-phase, terminal (202) is connected with terminal (203), and terminal (205) is connected with terminal (206).
In the utility model embodiment, combining unit output optical fibre connects verifying attachment input terminal, combining unit clock synchronization end Son connects calibration equipment synchronous signal output end.
In the utility model embodiment, combining unit output optical fibre connects verifying attachment input terminal, combining unit clock synchronization end Son accesses whole station clock synchronization signal with calibration equipment synchronous signal input end simultaneously.
In the utility model embodiment, the electronic current mutual inductor field calibration system further include: pressure regulator;
The output end of the pressure regulator is connected with the input terminal of current lifting device.
Meanwhile the utility model also provides a kind of electronic current mutual inductor field calibration system, comprising: normalized current is mutual Sensor, current lifting device, calibration equipment and the double bus scheme for accessing the electronic current mutual inductor being tested;Wherein,
In double bus scheme, the three-phase of two adjacent spaces respectively connects the electronic current mutual inductor of a subject, and described Two phase terminals (401) and terminal (404) that two adjacent spaces are closed on are respectively connected to current lifting device and standard current transformer, interval Other two-phase in, terminal (402) is connected with terminal (403), and terminal (405) is connected with terminal (406).
It is cumbersome that the utility model solves testing process in current intelligent substation electronic current mutual inductor field-checking The problem of, overcome the prior art to need continuous one one and disconnects a p-wire, second test line and move test repeatedly Equipment and ancillary equipment.The utility model, which can reach reduction, to be repeated connection times, reduces boosting/up-flow number, is reduced experiment and is set Standby moves repeatedly while realizing that efficient multiple error paths to more mutual inductors are verified, examine and determine and a little sentence automatically Fixed identification.
For the above and other objects, features and advantages of the utility model can be clearer and more comprehensible, preferable reality is cited below particularly Example is applied, and cooperates institute's accompanying drawings, is described in detail below.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is that electronic current mutual inductor verifies wiring diagram in the prior art;
Fig. 2 is electronic current mutual inductor field calibration system block diagram disclosed by the utility model;
Fig. 3 is electronic current mutual inductor field calibration system block diagram disclosed by the utility model;
Fig. 4 is the schematic diagram of an embodiment of the present invention;
Fig. 5 is the schematic diagram of an embodiment of the present invention.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.
The utility model embodiment provides a kind of electronic current mutual inductor field calibration system, as shown in Fig. 2, packet It includes: the list for the electronic current mutual inductor that standard current transformer 101, current lifting device 102, calibration equipment 103 and access are tested Bus wiring;Wherein,
In single bus scheme, the three-phase of two adjacent spaces 10,11 respectively connects the electronic current mutual inductor of a subject, and Two phase terminals 201 and terminal 204 that two adjacent spaces are closed on are respectively connected to current lifting device 102 and standard current transformer 101, Every other two-phase in, terminal 202 is connected with terminal 203, and terminal 205 is connected with terminal 206, standard current transformer The secondary simulation input terminal of 101 2 output termination calibration equipments.
In the utility model embodiment, combining unit output optical fibre connects 103 input terminal of verifying attachment, combining unit clock synchronization Terminal connects calibration equipment synchronous signal output end;Alternatively,
Combining unit output optical fibre connects verifying attachment input terminal, combining unit clock synchronization terminal and calibration equipment synchronization signal Input terminal accesses whole station clock synchronization signal simultaneously.
Meanwhile the utility model also provides a kind of electronic current mutual inductor field calibration system, in double bus scheme Electronic current mutual inductor verified, as shown in figure 3, the system include: standard current transformer 101, current lifting device 102, The double bus scheme of calibration equipment 103 and the electronic current mutual inductor for accessing subject;
In double bus scheme, the three-phase of two adjacent spaces 41,42 respectively connects the electronic current mutual inductor of a subject, and Two phase terminals 401 and terminal 404 that two adjacent spaces are closed on are respectively connected to current lifting device and standard current transformer, interval it is another In outer two-phase, terminal 402 is connected with terminal 403, and terminal 405 is connected with terminal 406.
By the technical solution of the utility model, solves current intelligent substation single busbar/double bus scheme form The cumbersome problem of testing process in electronic current mutual inductor field-checking overcomes and needs continuous one one in the prior art The problem of disconnecting a p-wire, second test line and moving testing equipment and ancillary equipment repeatedly repeats to reach reduction Connection times reduce boosting/up-flow number, reduce moving repeatedly, simultaneously to multiple errors of more mutual inductors for experimental facilities Channel is verified, examines and determine a little high efficiency field-checking such as automatic judgement identification.Below with reference to specific embodiment to this reality It is described in further details with novel technical solution.
The efficient testing scheme in single bus scheme form electronic current mutual inductor scene in the utility model embodiment is such as Under:
Single bus scheme form is widely used in the electrical primary main electrical scheme of electric system, is common in 500kV substation The advantages of low-pressure side and 220kV substation medium voltage side etc., single bus scheme is that structure is simple, clear, easy to operate, breaker and It may be readily formed as interlocking between disconnecting switch, effectively prevent misoperation fault, in addition there are using primary equipment few, operating cost is low The features such as.
In order to improve the efficiency of single bus scheme form electronic current mutual inductor on-the-spot test, the schematic diagram of the present embodiment As indicated at 4.
In the present embodiment, high-voltage switch electric appliance operation: the disconnecting switch for the adjacent spaces that closure will be tested, breaker; Disconnect interval switch, the breaker of other outgoing line intervals;
Primary connection: as shown in figure 4,601,602 distal end two-phases of adjacent two interval are respectively connected, such as 1., 4.;Between two It is respectively connected to current lifting device and standard current transformer every closing on mutually to draw, such as 2., 3.;Output voltage regulator connects current lifting device input End;Current lifting device, subject electronic current mutual inductor, standard current transformer series connection;
Secondary connection: secondary output S1, the S2 of standard current transformer connects the secondary simulation input terminal of calibration equipment;Merge single First output optical fibre connects calibration equipment DATA IN terminal;Combining unit clock synchronization terminal connects calibration equipment and connects calibration equipment synchronization signal Output terminal or combining unit and calibration equipment synchronous signal input end access whole station clock synchronization signal simultaneously.
Field-checking process:
1. carrying out high-voltage switch electric appliance operation, primary current wiring, secondary connection according to above-mentioned requirements;
2. being spaced corresponding combining unit for 601 to connect with calibration equipment, call through test voltage adjusts pressure regulator, to 601 It is spaced 3 phase, 3 electronic current mutual inductors while verifying, pressure regulator zero, power-off after record verification data;
3. being spaced corresponding combining unit for 602 to connect with calibration equipment, call through test voltage, adjusting pressure regulator, between 602 It is verified simultaneously every 3 phase, 3 electronic current mutual inductors, pressure regulator zero, power-off after record verification data;
4. tearing primary line, secondary line open, restore the original position of high-voltage switch electric appliance.
It is right to this 6 electronic current mutual inductors equipped with the configuration of " A set+B set " combining unit in traditional checkschema In terms of this 12 grouping error data, experimental facilities, pressure regulator 1, current lifting device 1, standard current transformer 1, school are needed altogether Test a set of equipment, 2, a high current line, 2, second test line, optical fiber 2;In terms of test process, at least need once to connect It line 6 times, secondary connection 12 times, flows up 12 times, and constantly moving along with equipment.
And scheme disclosed in the present embodiment is used, in terms of experimental facilities, pressure regulator 1, current lifting device 1, standard are needed altogether Current transformer 1, calibration equipment be a set of, 4, a high current line, 2, second test line, optical fiber 2, only than traditional school Proved recipe case increases by 2 high current lines;In terms of test process, if calibration equipment is only capable of connecing a combining unit, test only needs one Secondary wiring is primary, secondary connection 1 time, up-flow 4 times, and period does not need equipment and move.If calibration equipment can connect more Platform combining unit can simultaneously verify simultaneously, can also reduce number in terms of flowing up number, if can connect 2 conjunctions when calibration equipment And unit, then it flows up number and is decreased to 2 times, if 4 combining units can be connect when calibration equipment, flow up number and be decreased to 1 time, Primary connection can be thus achieved to 1 up-flow complete verification of the corresponding 12 grouping error parameter of 6 electronic current mutual inductors.
In the utility model embodiment, the efficient testing scheme in double bus scheme form electronic current mutual inductor scene:
Double bus scheme form is widely used in the electrical primary main electrical scheme of electric system, is common in 500kV substation The advantages of medium voltage side and 220kV substation high-pressure side etc., double bus scheme be any group of bus of maintenance will not interruption of power supply, it is any When circuit breaker overhauls, the advantages that work being replaced with busbar breaker.
In order to improve the efficiency of double bus scheme form electronic current mutual inductor on-the-spot test, the efficient survey of utility model It is as shown in Figure 5 to try solution principle.
High-voltage switch electric appliance operation: closure will test 2201 intervals, disconnecting switch in 2202 intervals and mother interval, disconnected Road device is closed disconnecting switch I, IV or II, III, is connected to 2201 intervals, 2202 intervals respectively at two buses;Other are disconnected to go out Interval switch, the breaker at line interval;
Primary connection: as shown in figure 5,2201 intervals, 2202 interval distal end two-phases are respectively connected, 1., 4. such as wiring;It will Two intervals, which are closed on mutually to draw, is respectively connected to current lifting device and standard current transformer, such as 2., 3.;It is defeated that output voltage regulator connects current lifting device Enter end;Current lifting device, subject electronic current mutual inductor, standard current transformer series connection;
Secondary connection: secondary output S1, the S2 of standard current transformer connects the secondary simulation input terminal of calibration equipment;Merge single First output optical fibre connects calibration equipment DATA IN terminal;Combining unit clock synchronization terminal connects calibration equipment and connects calibration equipment synchronization signal Output terminal or combining unit and calibration equipment synchronous signal input end access whole station clock synchronization signal simultaneously.
Field-checking process:
1. carrying out high-voltage switch electric appliance operation, primary current wiring, secondary connection according to above-mentioned requirements;
2. being spaced corresponding combining unit for 2201 to connect with calibration equipment, call through test voltage adjusts pressure regulator, right 2201 interval 3 phase, 3 electronic current mutual inductors verify simultaneously, pressure regulator zero, power-off after record verification data;
3. mother interval is corresponded to combining unit to connect with calibration equipment, call through test voltage, adjusting pressure regulator, between mother It is verified simultaneously every 3 phase, 3 electronic current mutual inductors, pressure regulator zero, power-off after record verification data;
4. being spaced corresponding combining unit for 2202 to connect with calibration equipment, call through test voltage, adjusting pressure regulator, 2202 It is spaced 3 phase, 3 electronic current mutual inductors while verifying, pressure regulator zero, power-off after record verification data;
5. tearing primary line, secondary line open, restore the original position of high-voltage switch electric appliance.
Traditional checkschema, the electronic current mutual inductors that this 12 are configured equipped with " A set+B set " combining unit, for This 24 grouping error data, experimental facilities aspect need pressure regulator 1, current lifting device 1, standard current transformer 1, verification altogether Equipment is a set of, 2, a high current line, 2, second test line, optical fiber 2;In terms of test process, primary connection is at least needed 12 times, secondary connection 24 times flow up 24 times, and constantly moving along with equipment.
And the scheme proposed in the utility model embodiment is used, in terms of experimental facilities, pressure regulator 1, up-flow are needed altogether Device 1, standard current transformer 1, calibration equipment be a set of, 4, a high current line, 2, second test line, optical fiber 2, Only increase by 2 high current lines than traditional checkschema;In terms of test process, if calibration equipment is only capable of connecing a combining unit, examination Test only need primary connection it is primary, secondary connection 1 time, up-flow 6 times, and period does not need equipment and move.If verification is set It is standby to connect more combining units and can verify simultaneously, number can also be reduced in terms of flowing up number, if when calibration equipment 2 combining units can be connect, then flows up number and is decreased to 3 times, if 6 combining units can be connect when calibration equipment, up-flow Number is decreased to 1 time, it can realizes that primary connection rises the corresponding 24 grouping error parameter of 12 electronic current mutual inductors for 1 time Flow complete verification.
The utility model is to single busbar/double bus scheme form electronic current mutual inductor field-checking, including puts into operation It is preceding examine, put into operation after first check, periodic inspection, Occasional Survey situations such as, the technical solution of the utility model can be passed through Primary connection, high-voltage switch electric appliance operation, the configuration of calibration equipment carry out field-checking to electronic current mutual inductor, promote electricity The field-checking efficiency of type current transformer.
Specific embodiment is applied in the utility model to be expounded the principles of the present invention and embodiment, with The explanation of upper embodiment is merely used to help understand the method and its core concept of the utility model;Meanwhile for this field Those skilled in the art, based on the idea of the present invention, there will be changes in the specific implementation manner and application range, comprehensive Upper described, the content of the present specification should not be construed as a limitation of the present invention.

Claims (8)

1. a kind of electronic current mutual inductor field calibration system, which is characterized in that the electronic current mutual inductor scene Check system includes: the list of the electronic current mutual inductor of standard current transformer, current lifting device, calibration equipment and access subject Bus wiring;Wherein,
In the single bus scheme, the three-phase of two adjacent spaces respectively connects the electronic current mutual inductor of a subject, and described The two-phase first terminal (201) and forth terminal (204) is respectively connected to current lifting device and normalized current is mutual that two adjacent spaces are closed on Sensor, in the other two-phase at interval, Second terminal (202) is connected with third terminal (203), the 5th terminal (205) and the 6th Terminal (206) is connected.
2. electronic current mutual inductor field calibration system as described in claim 1, which is characterized in that combining unit output light Fibre connects verifying attachment input terminal, and combining unit clock synchronization terminal connects calibration equipment synchronous signal output end.
3. electronic current mutual inductor field calibration system as described in claim 1, which is characterized in that combining unit output light Fibre connects verifying attachment input terminal, and combining unit clock synchronization terminal and calibration equipment synchronous signal input end access whole station pair simultaneously When signal.
4. electronic current mutual inductor field calibration system as described in claim 1, which is characterized in that the electronic type electricity Current transformer field calibration system further include: pressure regulator;
The output end of the pressure regulator is connected with the input terminal of current lifting device.
5. a kind of electronic current mutual inductor field calibration system, which is characterized in that the electronic current mutual inductor scene Check system includes: the double of the electronic current mutual inductor of standard current transformer, current lifting device, calibration equipment and access subject Bus wiring;Wherein,
In the double bus scheme, the three-phase of two adjacent spaces respectively connects the electronic current mutual inductor of a subject, and described The two-phase first terminal (401) and forth terminal (404) is respectively connected to current lifting device and normalized current is mutual that two adjacent spaces are closed on Sensor, in the other two-phase at interval, Second terminal (402) is connected with third terminal (403), the 5th terminal (405) and the 6th Terminal (406) is connected.
6. electronic current mutual inductor field calibration system as claimed in claim 5, which is characterized in that combining unit output light Fibre connects verifying attachment input terminal, and combining unit clock synchronization terminal connects calibration equipment synchronous signal output end.
7. electronic current mutual inductor field calibration system as claimed in claim 5, which is characterized in that combining unit output light Fibre connects verifying attachment input terminal, and combining unit clock synchronization terminal and calibration equipment synchronous signal input end access whole station pair simultaneously When signal.
8. electronic current mutual inductor field calibration system as claimed in claim 5, which is characterized in that the electronic type electricity Current transformer field calibration system further include: pressure regulator;
The output end of the pressure regulator is connected with the input terminal of current lifting device.
CN201820217812.5U 2018-02-07 2018-02-07 Electronic current mutual inductor field calibration system CN208477096U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108089144A (en) * 2018-02-07 2018-05-29 华北电力科学研究院有限责任公司 Electronic current mutual inductor field calibration system and method
CN109470952A (en) * 2018-11-05 2019-03-15 国网黑龙江省电力有限公司电力科学研究院 A kind of 10KV electronic mutual inductor electrification evaluating platform

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108089144A (en) * 2018-02-07 2018-05-29 华北电力科学研究院有限责任公司 Electronic current mutual inductor field calibration system and method
CN108089144B (en) * 2018-02-07 2020-01-24 华北电力科学研究院有限责任公司 Electronic current transformer field calibration system and method
CN109470952A (en) * 2018-11-05 2019-03-15 国网黑龙江省电力有限公司电力科学研究院 A kind of 10KV electronic mutual inductor electrification evaluating platform

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