CN108152779A - Electronic current mutual inductor check system and method - Google Patents
Electronic current mutual inductor check system and method Download PDFInfo
- Publication number
- CN108152779A CN108152779A CN201810123622.1A CN201810123622A CN108152779A CN 108152779 A CN108152779 A CN 108152779A CN 201810123622 A CN201810123622 A CN 201810123622A CN 108152779 A CN108152779 A CN 108152779A
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- mutual inductor
- electronic current
- current mutual
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- check system
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention provides a kind of electronic current mutual inductor check system and method, electronic current mutual inductor check system includes：Standard current transformer, current lifting device, calibration equipment and 3/2nds wiring for accessing the electronic current mutual inductor of subject；Three string series connection of 3/2nds wiring, output terminal, standard current transformer with the current lifting device are connected in series with, the secondary analog input end of the output terminal connection calibration equipment of standard current transformer.Field-checking is carried out to electronic current mutual inductor by the primary connection of the present invention, high-voltage switch electric appliance operation, the configuration of calibration equipment, promotes the field-checking efficiency of electronic current mutual inductor.
Description
Technical field
The present invention relates to power technologies, are concretely a kind of electronic current mutual inductor check system and method.
Background technology
With the continuous development of intelligent 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, national grid company standard Q/GDW 690-2011《Electronic mutual inductor field-checking specification》In
The electronic current mutual inductor provided verifies wiring diagram 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, per one electronic current mutual inductor of field-checking, both need 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.
Invention content
In order to solve in the electronic current mutual inductor field-checking of existing intelligent substation, testing process is cumbersome to ask
Topic, an embodiment of the present invention provides a kind of electronic current mutual inductor check system, including：Standard current transformer, current lifting device,
Calibration equipment and 3/2nds wiring for accessing the electronic current mutual inductor of subject；Wherein,
Three string series connection of 3/2nds wiring, output terminal, standard current transformer with the current lifting device are connected in series with, mark
The secondary analog input end of the output terminal connection calibration equipment of quasi- current transformer.
In the embodiment of the present invention, the interval of 3/2nds wiring respectively corresponds to a combining unit.
In the embodiment of the present invention, cross-talk connects synchronous signal output end of calibration equipment during the combining unit pair, alternatively,
Signal when combining unit and calibration equipment access whole station pair simultaneously with calibration equipment input terminal.
In the embodiment of the present invention, the electronic current mutual inductor check system further includes：Pressure regulator；
The output terminal of the pressure regulator is connected with the input terminal of current lifting device.
It is mutual using aforementioned electronic current meanwhile the present invention also provides a kind of electronic current mutual inductor method of calibration
Sensor check system verifies subject electronic mutual inductor, and the method includes：
The interval of 3/2nds wiring and the connection of busbar are disconnected, is closed the breaker of each phase in each interval, isolation
Switch；
Subject electronic current mutual inductor in 3/2nds connection types is connected in series in checking circuit；
The corresponding combining unit in subject electronic current mutual inductor interval is connect with calibration equipment, call through test voltage,
Pressure regulator is adjusted, the subject electronic current mutual inductor accessed in each phase in each interval is verified.
In the embodiment of the present invention, by the electronic mutual inductor of subject and breaker, the disconnecting switch string of a phase in an interval
Connection connection.
The present invention passes through once connecing for this programme to the electronic current mutual inductor field-checking of 3/2nds connection types
Line, high-voltage switch electric appliance operation, the configuration of calibration equipment carry out field-checking to electronic current mutual inductor, promote electronic type electricity
The field-checking efficiency of current transformer.
Above and other objects, features and advantages to allow the present invention can be clearer and more comprehensible, preferred embodiment cited below particularly,
And coordinate institute's accompanying drawings, it is described in detail below.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 verifies wiring diagram for electronic current mutual inductor in the prior art；
Fig. 2 is electronic current mutual inductor check system block diagram disclosed by the invention；
Fig. 3 is the flow chart of electronic current mutual inductor method of calibration disclosed by the invention；
Fig. 4 is the schematic diagram of one embodiment of the invention.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
As shown in Fig. 2, for a kind of electronic current mutual inductor check system block diagram disclosed by the invention, including：Standard electric
Current transformer 101, current lifting device 102, calibration equipment 103 and for access subject electronic current mutual inductor 3/2nds
Wiring 104；Wherein,
Three string series connection of 3/2nds wiring 104, company of connecting with the output terminal of standard current transformer 101, current lifting device 102
It connects, the secondary analog input end of the output terminal connection calibration equipment 103 of standard current transformer 101.
In the embodiment of the present invention, cross-talk connects synchronous signal output end of calibration equipment or merges during combining unit pair
Signal when unit and calibration equipment 103 access whole station pair simultaneously with calibration equipment input terminal；
The interval of 3/2nds wiring respectively corresponds to a combining unit.
It is mutual using aforementioned electronic current meanwhile the present invention also provides a kind of electronic current mutual inductor method of calibration
Sensor check system verifies subject electronic mutual inductor, as shown in figure 3, method includes：
Step S201, disconnect 3/2nds wiring interval and busbar connection, be closed the breaker of each phase in each interval,
Disconnecting switch；
Subject electronic current mutual inductor in 3/2nds connection types is connected in series in checking circuit by step S202；
The corresponding combining unit in subject electronic current mutual inductor interval with calibration equipment is linked, connected by step S203
Test voltage, adjusting pressure regulator verify the subject electronic current mutual inductor accessed in each phase in each interval.
The present invention passes through the primary of this programme to the electronic current mutual inductor field-checking in 3/2nds connection types
Wiring, high-voltage switch electric appliance operation, the configuration of calibration equipment carry out field-checking to electronic current mutual inductor, promote electronic type
The field-checking efficiency of current transformer.Technical solution of the present invention is done with reference to specific embodiment into once specifically
It is bright.
In order to solve the problems, such as that testing process is cumbersome in current intelligent substation electronic current mutual inductor field-checking, need
Continuous one one is wanted to disconnect a p-wire, second test line and move testing equipment and ancillary equipment repeatedly.Reach and subtract
Connection times are repeated less, reduce boosting/up-flow number, reduce moving repeatedly while to the more of more mutual inductors for experimental facilities
A error path is verified, is examined and determine the scheme and device of a little high efficiency field-checking such as automatic judgement identification.The present embodiment carries
For a kind of efficient testing scheme in 3/2 connection type electronic current mutual inductor scene
3/2 connection type is widely used in the electrical primary main electrical scheme of electric system, if being connected between two groups of busbares
Dry string breaker, has 3 breakers every a string, and an intermediate table scale makees network interconnecting circuit, a circuit accessed between every two, altogether
There are two circuits.One and half (3/2) breakers are installed in average every circuit, therefore claim one-and-half breaker wiring, also known as two/
Three wiring.The major advantage of 3/2 wiring has the features such as reliability is high, operational flexibility is good, operation maintenance facilitates, in intelligent power transformation
It is also widely used in standing.3/2 connection type is equipped with 3 groups of current transformers or 4 groups of current transformers in often going here and there.
For the ease of showing scheme, the present embodiment is subject to analytic explanation, but this hair with the 500kV intervals of 3/2 wiring
Bright technical solution application is not limited to 500kV voltage class.In order to once be verified to more electronic current mutual inductors,
For the structure that Main connection form is 3/2 wiring, consider 12 electronic current mutual inductors in the three-phase of one complete " string "
It is connected according to the sequence of positions of its space layout.
As shown in figure 4, for the efficient testing scheme principle in 3/2 connection type electronic current mutual inductor scene in the present embodiment
Figure.Wherein, the three-phase at 5051 intervals is respectively comprising a subject electronic current mutual inductor, i.e., each in 5051A, 5051B, 5051C
Comprising a subject electronic current mutual inductor, wherein the electronic current mutual inductor being tested and disconnecting switch therein, open circuit
Device is connected in series with；Wherein midfeather 5052 includes 6 subject electronic current mutual inductors, because flowing through the electricity of midfeather 5052
Stream has amphicheirality, therefore usually midfeather both sides are each equipped with current transformer, thus midfeather be 5052 in include 2
Group is 6 current transformers.
High-voltage switch electric appliance operates：The connection of interruption intervals and busbar；It is closed 5051,5052,5053 interval A, B, C three-phases
Breaker, disconnecting switch；Disconnect the earthing switch of 5051,5052,5053 interval A, B, C three-phases.
Primary connection：As shown in figure 3, primary current line " head and the tail " is connected, " head ", " tail " and liter of A phases and C phases are drawn
Flow device output terminal, standard current transformer series connection；Output voltage regulator connects current lifting device input terminal；
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；Terminal connects calibration equipment and connects calibration equipment synchronizing signal during combining unit pair
Leading-out terminal, alternatively, signal when combining unit accesses whole station pair simultaneously with calibration equipment synchronous signal input end.
Field-checking process：
1. carry out high-voltage switch electric appliance operation, primary current wiring, secondary connection according to above-mentioned requirements；
2. the corresponding combining unit in 5051 intervals is connect with calibration equipment, call through test voltage adjusts pressure regulator, to 5051
It is spaced 3 phase, 3 electronic current mutual inductors to verify simultaneously, records pressure regulator zero, power-off after verification data；
3. the corresponding combining unit in 5052 intervals is connect with calibration equipment, call through test voltage adjusts pressure regulator, to 5052
It is spaced 3 phase, 6 electronic current mutual inductors to verify simultaneously, records pressure regulator zero, power-off after verification data；
4. the corresponding combining unit in 5053 intervals is connect with calibration equipment, call through test voltage adjusts pressure regulator, to 5053
It is spaced 3 phase, 3 electronic current mutual inductors to verify simultaneously, records pressure regulator zero, power-off after verification data；
5. tearing primary line, secondary line open, restore the original position of high-voltage switch electric appliance.
Traditional checkschema in the present embodiment totally 12 equipped with " A sets+B sets " combining unit be configured electronic current
When mutual inductor is verified, for this 24 grouping error data, experimental facilities aspect needs pressure regulator 1, current lifting device 1, mark altogether
Quasi- current transformer 1, calibration equipment are a set of, 2, a high current line, 2, second test line, optical fiber 2；Experiment process side
Face at least needs primary connection 12 times, secondary connection 24 times, flows up 24 times, and constantly moving along with equipment.
And scheme proposed by the present invention is used, in terms of experimental facilities, pressure regulator 1, current lifting device 1, standard electric are needed altogether
Current transformer 1, calibration equipment are a set of, 4, a high current line, 2, second test line, optical fiber 2, only than traditional verification side
Case only increases by 2 high current lines.In terms of experiment process, if calibration equipment is only capable of connecing a combining unit, experiment only needs primary
Wiring is primary, secondary connection 1 time, up-flow 6 times, and period does not need to equipment and move.If calibration equipment can connect more
Combining unit can simultaneously verify simultaneously, and number can also be reduced in terms of number is flowed up, if can connect 2 merging during calibration equipment
Unit then flows up number and is decreased to 3 times, if can connect 6 combining units during calibration equipment, flows up number and is decreased to 1 time, can
To realize 1 up-flow complete verification of the corresponding 24 grouping error parameter of 12 electronic current mutual inductors of primary connection.
The present embodiment needs 4, primary current line altogether, wherein 2. with A phases 5051 3. are spaced outlet and B phases 5053 respectively
Interval outlet is connected, and B phases 5051 are spaced and is spaced outlet with C phases 5051 and is connected so that on 5051,5052,5,053 3 intervals
12 electronic current mutual inductors are together in series altogether, have reached through-flow 12 electronic mutual inductors of primary connection.
The present invention is to the electronic current mutual inductor field-checking of 3/2 connection type, including first after examining, putting into operation before putting into operation
Situations such as secondary inspection, periodic inspection, Occasional Survey, can be grasped by primary connection, the high-voltage switch electric appliance of the scheme of the application
The configuration of work, calibration equipment carries out field-checking to electronic current mutual inductor, promotes the live school of electronic current mutual inductor
Test efficiency.
It applies specific embodiment in the present invention to be expounded the principle of the present invention and embodiment, above example
Explanation be merely used to help understand the present invention method and its core concept；Meanwhile for those of ordinary skill in the art,
Thought according to the present invention, there will be changes in specific embodiments and applications, in conclusion in this specification
Appearance should not be construed as limiting the invention.
Claims (7)
- A kind of 1. electronic current mutual inductor check system, which is characterized in that the electronic current mutual inductor check system Including：Standard current transformer, current lifting device, calibration equipment and access subject electronic current mutual inductor 3/2nds connect Line；Wherein,Three string series connection of 3/2nds wiring, output terminal, standard current transformer with the current lifting device are connected in series with, standard electric The secondary analog input end of the output terminal connection calibration equipment of current transformer.
- 2. electronic current mutual inductor check system as described in claim 1, which is characterized in that the interval of 3/2nds wiring A respectively corresponding combining unit.
- 3. electronic current mutual inductor check system as claimed in claim 2, which is characterized in that during described combining unit pair Cross-talk connects synchronous signal output end of calibration equipment.
- 4. electronic current mutual inductor check system as claimed in claim 2, which is characterized in that the combining unit and verification Signal when device accesses whole station pair simultaneously with calibration equipment input terminal.
- 5. electronic current mutual inductor check system as described in claim 1, which is characterized in that the electronic current is mutual Sensor check system further includes：Pressure regulator；The output terminal of the pressure regulator is connected with the input terminal of current lifting device.
- 6. a kind of electronic current mutual inductor method of calibration, which is characterized in that the method utilizes the electricity described in claim 1-5 Type current transformer check system verifies the electronic current mutual inductor of subject, and the method includes：The interval of 3/2nds wiring and the connection of busbar are disconnected, is closed the breaker of each phase, disconnecting switch in each interval；Subject electronic current mutual inductor in 3/2nds connection types is connected in series in checking circuit；The corresponding combining unit in subject electronic current mutual inductor interval is connect with calibration equipment, call through test voltage is adjusted Pressure regulator verifies the subject electronic current mutual inductor accessed in each phase in each interval.
- 7. electronic current mutual inductor method of calibration as claimed in claim 6, which is characterized in that by the electronic type mutual inductance of subject Device is connected in series with the breaker of each phase, disconnecting switch in an interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810123622.1A CN108152779A (en) | 2018-02-07 | 2018-02-07 | Electronic current mutual inductor check system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810123622.1A CN108152779A (en) | 2018-02-07 | 2018-02-07 | Electronic current mutual inductor check system and method |
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| CN201810123622.1A Pending CN108152779A (en) | 2018-02-07 | 2018-02-07 | Electronic current mutual inductor check system and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111756021A (en) * | 2020-06-29 | 2020-10-09 | 深圳供电局有限公司 | Line protection current secondary circuit for three-half wiring |
| CN111929526A (en) * | 2020-07-29 | 2020-11-13 | 国网冀北电力有限公司计量中心 | Electronic voltage transformer checking system and method |
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| CN205176248U (en) * | 2015-08-06 | 2016-04-20 | 云南电网有限责任公司电力科学研究院 | Intelligent substation electronic transformer measures accuracy emulation test and compares system |
| CN107064849A (en) * | 2017-03-15 | 2017-08-18 | 平高集团有限公司 | Electronic current mutual inductor check system and calibration equipment |
| CN207946512U (en) * | 2018-02-07 | 2018-10-09 | 华北电力科学研究院有限责任公司 | Electronic current mutual inductor check system |
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Patent Citations (5)
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| CN101424728A (en) * | 2008-11-10 | 2009-05-06 | 西北电网有限公司 | On site precision detecting test line for high-voltage current transformer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN111756021A (en) * | 2020-06-29 | 2020-10-09 | 深圳供电局有限公司 | Line protection current secondary circuit for three-half wiring |
| CN111929526A (en) * | 2020-07-29 | 2020-11-13 | 国网冀北电力有限公司计量中心 | Electronic voltage transformer checking system and method |
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