CN207946512U - Electronic current mutual inductor check system - Google Patents
Electronic current mutual inductor check system Download PDFInfo
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- CN207946512U CN207946512U CN201820220094.7U CN201820220094U CN207946512U CN 207946512 U CN207946512 U CN 207946512U CN 201820220094 U CN201820220094 U CN 201820220094U CN 207946512 U CN207946512 U CN 207946512U
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- mutual inductor
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- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 239000013307 optical fiber Substances 0.000 description 3
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Abstract
The utility model provides a kind of electronic current mutual inductor check system, including：3/2nds wiring of standard current transformer, current lifting device, calibration equipment and the electronic current mutual inductor for accessing subject；Three string series connection of 3/2nds wiring, are connected in series with output end, the standard current transformer of the current lifting device, the secondary analog input end of the output end connection calibration equipment of standard current transformer.Field-checking is carried out to electronic current mutual inductor by the primary connection of the utility model, 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 utility model is related to power technologies, are concretely a kind of electronic current mutual inductor check systems.
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.
Utility model content
Testing process is cumbersome in electronic current mutual inductor field-checking in order to solve existing intelligent substation asks
Topic, the utility model embodiment provide a kind of electronic current mutual inductor check system, including：Standard current transformer, liter
3/2nds wiring of stream device, calibration equipment and the electronic current mutual inductor for accessing subject；Wherein,
Three string series connection of 3/2nds wiring, are connected in series with output end, the standard current transformer of the current lifting device, mark
The secondary analog input end of the output end connection calibration equipment of quasi- current transformer.
In the utility model embodiment, the interval of 3/2nds wiring respectively corresponds to a combining unit.
In the utility model embodiment, the combining unit clock synchronization cross-talk connects synchronous signal output end of calibration equipment,
Alternatively, combining unit and calibration equipment access whole station clock synchronization signal simultaneously with calibration equipment input terminal.
In the utility model embodiment, the electronic current mutual inductor check system further includes：Pressure regulator；
The output end of the pressure regulator is connected with the input terminal of current lifting device.
The electronic current mutual inductor field-checking of 3/2nds connection type of the utility model pair, passes through the one of this programme
Secondary wiring, high-voltage switch electric appliance operation, the configuration of calibration equipment carry out field-checking to electronic current mutual inductor, promote electronics
The field-checking efficiency of formula current transformer.
For the above and other objects, features and advantages of the utility model can be clearer and more comprehensible, preferable reality cited below particularly
Example is applied, and coordinates institute's accompanying drawings, is described in detail below.
Description of the drawings
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, other drawings may also be obtained based on these drawings.
Fig. 1 is that electronic current mutual inductor verifies wiring diagram in the prior art；
Fig. 2 is apparatus for checking electronic type current mutual inductor block diagram disclosed by the utility model；
Fig. 3 is the schematic diagram of one embodiment of the utility model.
Specific implementation mode
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
The every other embodiment obtained, shall fall within the protection scope of the present invention.
As shown in Fig. 2, be a kind of electronic current mutual inductor check system block diagram disclosed by the utility model, including：Mark
Two points of quasi- current transformer 101, current lifting device 102, calibration equipment 103 and the electronic current mutual inductor for accessing subject
Three wiring 104；Wherein,
Three string series connection of 3/2nds wiring 104, company of connecting with the output end of standard current transformer 101, current lifting device 102
It connects, the secondary analog input end of the output end connection calibration equipment 103 of standard current transformer 101.
In the utility model embodiment, the combining unit clock synchronization cross-talk of electronic current mutual inductor check system connects verification dress
Synchronous signal output end or combining unit and calibration equipment 103 set access whole station simultaneously with calibration equipment input terminal
Clock synchronization signal；
The interval of 3/2nds wiring respectively corresponds to a combining unit.
The electronic current mutual inductor field-checking of 3/2nds connection type of the utility model pair, passes through the one of this programme
Secondary wiring, high-voltage switch electric appliance operation, the configuration of calibration equipment carry out field-checking to electronic current mutual inductor, promote electronics
The field-checking efficiency of formula current transformer.Technical solutions of the utility model are done into detailed once with reference to specific embodiment
It describes in detail 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 subtracts
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 the 3/2 efficient testing scheme in connection type electronic current mutual inductor scene of one kind
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, an intermediate table scale to make network interconnecting circuit, a circuit is accessed between every two, altogether every a string
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 reality with the intervals 500kV of 3/2 wiring
It is not limited to 500kV voltage class with novel technical solution application.In order to once be carried out to more electronic current mutual inductors
Verification considers 12 electronic currents in the three-phase of one complete " string " are mutual the structure that Main connection form is 3/2 wiring
Sensor is connected according to the sequence of positions of its space layout.
As shown in figure 3, for the 3/2 efficient testing scheme principle in connection type electronic current mutual inductor scene in the present embodiment
Figure.Wherein, the three-phase at 5051 intervals includes respectively a subject electronic current mutual inductor, i.e., each in 5051A, 5051B, 5051C
Including 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 " ending " is connected, " head ", " tail " and liter of A phases and C phases are drawn
Flow device output end, 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；Combining unit clock synchronization terminal connects calibration equipment and connects calibration equipment synchronizing signal
Leading-out terminal or combining unit access whole station clock synchronization signal simultaneously with calibration equipment synchronous signal input end.
Field-checking process：
1. carrying 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 while verifying, record 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 5051
It is spaced 3 phase, 6 electronic current mutual inductors while verifying, record 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 while verifying, record 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 is to totally 12 electronic currents equipped with the configuration of " A sets+B set " combining unit in the present embodiment
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 be 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 use the utility model proposes scheme, in terms of experimental facilities, need pressure regulator 1, current lifting device 1, mark altogether
Quasi- 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 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 connection is primary, secondary connection 1 time, up-flow 6 times, and period does not need equipment and move.If calibration equipment can connect
More combining units can simultaneously verify simultaneously, and number can also be reduced in terms of flowing up number, if can connect 2 when calibration equipment
Combining unit then flows up number and is decreased to 3 times, if can connect 6 combining units when calibration equipment, flows up number and be decreased to 1
It is secondary, 1 up-flow complete verification of the corresponding 24 grouping error parameter of 12 electronic current mutual inductors of primary connection may be implemented.
The present embodiment needs 4, primary current line altogether, wherein 2. with A phases 5051 are 3. spaced outlet and B phases 5053 respectively
It is spaced outlet to be connected, the interval of B phases 5051 is spaced outlet with C phases 5051 to be connected so that on 5051,5052,5,053 3 intervals
Amount to 12 electronic current mutual inductors to be together in series, reaches through-flow 12 electronic mutual inductors of primary connection.
The electronic current mutual inductor field-checking of 3/2 connection type of the utility model pair, including examine, put into operation before putting into operation
Afterwards situations such as first check, periodic inspection, Occasional Survey, primary connection, high-voltage switch gear electricity that can be by the scheme of the application
Device operation, the configuration of calibration equipment carry out field-checking to electronic current mutual inductor, promote showing for electronic current mutual inductor
Field verification efficiency.
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 its core concept of the utility model；Meanwhile for the general skill of this field
Art personnel, according to the thought of the utility model, there will be changes in the specific implementation manner and application range, to sum up institute
It states, the content of the present specification should not be construed as a limitation of the present invention.
Claims (5)
1. a kind of electronic current mutual inductor check system, which is characterized in that the apparatus for checking electronic type current mutual inductor
Including：Standard current transformer, current lifting device, calibration equipment and for access subject electronic current mutual inductor two/
Three wiring；Wherein,
Three string series connection of 3/2nds wiring, are connected in series with, standard electric with output end, the standard current transformer of the current lifting device
The secondary analog input end of the output end 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 the combining unit clock synchronization
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
Device accesses whole station clock synchronization signal 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 end of the pressure regulator is connected with the input terminal of current lifting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820220094.7U CN207946512U (en) | 2018-02-07 | 2018-02-07 | Electronic current mutual inductor check system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820220094.7U CN207946512U (en) | 2018-02-07 | 2018-02-07 | Electronic current mutual inductor check system |
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| Publication Number | Publication Date |
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| CN207946512U true CN207946512U (en) | 2018-10-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108152779A (en) * | 2018-02-07 | 2018-06-12 | 华北电力科学研究院有限责任公司 | Electronic current mutual inductor check system and method |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108152779A (en) * | 2018-02-07 | 2018-06-12 | 华北电力科学研究院有限责任公司 | Electronic current mutual inductor check system and method |
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