CN205679701U - A kind of ultra-high voltage transformer station simulates the check system that puts into operation - Google Patents
A kind of ultra-high voltage transformer station simulates the check system that puts into operation Download PDFInfo
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- CN205679701U CN205679701U CN201620524427.6U CN201620524427U CN205679701U CN 205679701 U CN205679701 U CN 205679701U CN 201620524427 U CN201620524427 U CN 201620524427U CN 205679701 U CN205679701 U CN 205679701U
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Abstract
This utility model provides a kind of ultra-high voltage transformer station to simulate the check system that puts into operation, including: pressure regulator, intermediate transformer, compensation Capacitor banks and control unit；Supply voltage pressure regulation is defeated by intermediate transformer by pressure regulator；Tested transformator it is supplied to after intermediate transformer transformation；Intermediate transformer is that the many gears of separate unit export transformator；Compensate Capacitor banks to be articulated on the bus between intermediate transformer and tested transformator by reactive-load compensation catalyst group, for system is carried out reactive-load compensation；Control unit needs the compensation capacitance put into according to the parameter of intermediate transformer and the gain of parameter of tested transformator, controls reactive-load compensation catalyst group action so that compensating Capacitor banks to put into corresponding compensation capacitance；Output gear according to the input voltage regulation intermediate transformer that tested transformator needs.Disclosure satisfy that the primary side power reguirements of extra-high voltage transformer, with low voltage and smaller current simulated high-pressure, make secondary side complete the indices test of extra-high voltage.
Description
Technical field
This utility model relates to extra-high voltage technical field, particularly relates to a kind of ultra-high voltage transformer station and simulates the verification system that puts into operation
System.
Background technology
Ultra-high voltage transformer station simulation puts into operation and verifies the properties mainly verifying extra-high voltage transformer secondary side, such as, continue
Electric protection, secondary loop current etc..
Vector angle method is one of project important in relay protection work, and vector mistake will cause normal operating condition or event
The protective relaying maloperation of barrier state or tripping, relay protection is the correctness of necessary strict guarantee vector before formally putting into operation.
The vector angle method of traditional relay protection, uses running voltage and the load current of primary system reality, at new equipment
Before putting into operation, its correctness cannot comprehensive verification.Need, by grid switching operation, to use mother during new equipment puts into operation
Chopper and interim protection ribbon mode, charge to new equipment.
But, this mode is difficult to control to due to primary system load current, does not reaches the numerical value required for vector angle method
And have to adjust specially, the method for operation of altering system, substantially prolongs the time of system check.
In Intelligent transformer station, after using electronic type or optics mutual inductance, the electric parameters carrying out self-mutual inductance is directly accessed by optical fiber
Protective relaying device, conventional secondary pressurized, through-flow test etc. will be unable to carry out.
Therefore, those skilled in the art need to provide a kind of ultra-high voltage transformer station to simulate the check system that puts into operation, it is possible at quilt
Before examination transformator commencement of commercial operation, complete the every detection to tested transformator, shorten checking time.
Utility model content
In order to solve above technical problem present in prior art, this utility model provides a kind of ultra-high voltage transformer station mould
Intend putting into operation check system, it is possible to meet the primary side power reguirements of extra-high voltage transformer, make extra-high voltage transformer secondary side complete
The indices test of extra-high voltage, shortens checking time.
This utility model embodiment provides a kind of ultra-high voltage transformer station to simulate the check system that puts into operation, including: pressure regulator, centre
Transformator, compensation Capacitor banks and control unit；
Described pressure regulator, for exporting after supply voltage pressure regulation to described intermediate transformer；
Described intermediate transformer, the voltage for exporting described pressure regulator is supplied to tested transformator after carrying out transformation；
Described intermediate transformer is that the many gears of separate unit export transformator；
Described compensation Capacitor banks is articulated in described intermediate transformer and described tested change by reactive-load compensation catalyst group
On bus between depressor, for system is carried out reactive-load compensation；
Described control unit, the gain of parameter for the parameter according to intermediate transformer and tested transformator needs input
Compensate capacitance, control described reactive-load compensation catalyst group action so that described compensation Capacitor banks puts into corresponding compensation electricity
Hold capacity；It is additionally operable to the output gear of intermediate transformer described in the input voltage regulation that needs according to tested transformator.
Preferably, also include: first group of current transformer and second group of current transformer；
Described compensation Capacitor banks is articulated in described intermediate transformer and institute by described reactive-load compensation catalyst group parallel connection
State on the bus between tested transformator；
Described first group of current transformer, for measuring the output electric current of described intermediate transformer secondary windings side, by institute
The output electric current stating secondary windings side is sent to described control unit；
Described second group of current transformer, for measuring the electric current of described tested transformer inputs, by described tested change
The electric current of depressor input is sent to described control unit；
Described control unit, for reaching described tested transformator target electricity when the electric current of described tested transformer inputs
The N of stream/for the moment, it is judged that whether the output electric current of described secondary windings side divides at the N of the rated current of described intermediate transformer
Within one of, if it is not, then intermediate transformer boosting described in locking, control described intermediate transformer and be depressured to zero.
Preferably, the span of described N is 8-12.
Preferably, described intermediate transformer includes: transformator and array electric control contactor；
Described array electric control contactor includes multiple three-phase contactor；
The armature winding of described transformator includes tap, or, the secondary windings of described transformator includes tap, or, described
The armature winding of transformator and secondary windings all include tap；
Armature winding and the secondary windings of described transformator are interchangeable；
The armature winding of described transformator and secondary windings all include three-phase；
This intermediate transformer includes input and outfan, and described input passes through one or more described three-phase contactors
Connecting described armature winding, described outfan connects described secondary windings by one or more described three-phase contactors；
Electric pressure switching command outside the reception of described array electric control contactor, performs to cut with described electric pressure
Change the catalyst action that order is corresponding, the combination of input and outfan to switch this intermediate transformer.
Preferably, when the armature winding of described transformator includes tap, the tap of described armature winding is one or two
More than individual；
When the secondary windings of described transformator includes tap, the tap of described secondary windings is one or more.
Preferably, when the armature winding of described transformator includes a tap, described armature winding includes three terminals,
It is respectively as follows: the first end, tap terminals and the second end；Described array electric control contactor includes: the first three-phase contactor and the two or three
Phase contact；
First end of armature winding described in three-phase connects the input of this intermediate transformer by described first three-phase contactor
End；
The tap terminals of armature winding described in three-phase connects the input of this intermediate transformer by described second three-phase contactor
End；
Second end of armature winding described in three-phase links together.
Preferably, described array electric control contactor also includes: the 3rd three-phase contactor；
The input of this intermediate transformer connects the outfan of this intermediate transformer by described 3rd three-phase contactor；
When described 3rd three-phase contactor Guan Bi, when other three-phase contactors disconnect, the outfan electricity of this intermediate transformer
Press equal with input terminal voltage.
Preferably, described array electric control contactor also includes: the 4th three-phase contactor, the 5th three-phase contactor, the 6th
Three-phase contactor and the 7th three-phase contactor；
Described 4th three-phase contactor is connected between the input of this intermediate transformer and described 3rd three-phase contactor,
Described 5th three-phase contactor is connected between the input of this intermediate transformer and described 3rd three-phase contactor；
Described 6th three-phase contactor is connected between described 3rd three-phase contactor and the outfan of this intermediate transformer,
Described 7th three-phase contactor is connected between described 3rd three-phase contactor and the outfan of this intermediate transformer；
First end of described transformer secondary output winding connects the defeated of this intermediate transformer by described 6th three-phase contactor
Going out end, the first end of described transformer secondary output winding connects the output of this intermediate transformer by described 7th three-phase contactor
End；Second end of the secondary windings of described transformator links together.
Preferably, when described armature winding connects power supply and supply voltage is 400V, by switching described array electricity
The different conditions of catalyst in control catalyst, the output voltage of this intermediate transformer can be 400V, 600V and 800V；
When described secondary windings connects power supply and supply voltage is 400V, by switching described array electric control contactor
The different conditions of middle catalyst, the output voltage of this intermediate transformer can be 400V, 266V and 200V.
Preferably, voltage detection unit and current detecting unit are also included；
Described voltage detection unit, for detecting the input voltage of described intermediate transformer, sends described input voltage
To described control unit；
Described control unit, is used for judging, when described input voltage exceedes voltage threshold, to control described pressure regulator and power supply
Disconnect；
Described current detecting unit, for detecting the input current of described intermediate transformer, sends described input current
To described control unit；
Described control unit, is used for judging when described input current exceedes current threshold, controls described pressure regulator with described
Power supply disconnects.
Compared with prior art, this utility model at least has the advantage that
Utilizing pressure regulator and intermediate transformer two-stage is the pressure regulation that tested transformator realizes input voltage, first with pressure regulation
The input voltage of power supply is carried out pressure regulation by device, and the voltage after pressure regulation is boosted by intermediate transformer again.Can be so tested
Transformator provides higher voltage.And control unit can need to control intermediate transformer according to the test of tested transformator
Output gear.It addition, in order to reduce the capacity requirement to pressure regulator and intermediate transformer, this utility model additionally provides compensation electricity
Container group, provides reactive-load compensation for system.And control unit can automatically control compensation electricity according to the needs of tested transformator
The amount of capacity of container group input coefficient.This utility model provides a kind of ultra-high voltage transformer station to simulate the check system that puts into operation, it is possible to
Meet the primary side power reguirements of extra-high voltage transformer, use low voltage and less electric current to carry out simulated high-pressure, make extra-high voltage
Circuit Fault on Secondary Transformer completes the indices test of extra-high voltage, shortens checking time.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments described in application, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawing can also be obtained according to these accompanying drawings.
The ultra-high voltage transformer station that Fig. 1 provides for this utility model simulates check system embodiment one schematic diagram that puts into operation；
The ultra-high voltage transformer station that Fig. 2 provides for this utility model simulates check system embodiment two schematic diagram that puts into operation；
Fig. 3 compensates the Capacitor banks schematic diagram by catalyst access system for what this utility model provided；
The intermediate transformer schematic diagram of many gears output that Fig. 4 provides for this utility model.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that this utility model scheme, real below in conjunction with this utility model
Execute the accompanying drawing in example, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model,
The every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly falls into this reality
By novel protected scope.
Embodiment one:
Seeing Fig. 1, this figure is that the ultra-high voltage transformer station simulation check system embodiment one that puts into operation that this utility model provides is shown
It is intended to.
The ultra-high voltage transformer station that the present embodiment provides simulates the check system that puts into operation, including: pressure regulator 100, intermediate transformer
200, Capacitor banks 300 and control unit 400 are compensated；
Described pressure regulator 100, for exporting after supply voltage pressure regulation to described intermediate transformer 200；
Described intermediate transformer 200, is supplied to tested change after the voltage of described pressure regulator 100 output is carried out transformation
Depressor 600；
In this utility model, tested transformator is the tested transformator of ultra-high voltage transformer station.It is understood that it is extra-high
The electric pressure of pressure is at 750kV-1000kV.And the most tested transformator of main transformer of ultra-high voltage transformer station need to be 500kV with
Under various performance tests.Testing ground needs to provide working power, to detect the various of tested transformator for tested transformator
Performance.
Described intermediate transformer 200 is that the many gears of separate unit export transformator；
Described compensation Capacitor banks 300 is articulated in described intermediate transformer 200 and described by reactive-load compensation catalyst group
On bus between tested transformator 600, for system is carried out reactive-load compensation；
Described control unit 400, for the parameter according to intermediate transformer 200 and the gain of parameter needs of tested transformator
The compensation capacitance put into, controls reactive-load compensation catalyst group action so that described compensation Capacitor banks 300 puts into correspondence
Compensate capacitance；It is additionally operable to the output of intermediate transformer 200 described in the input voltage regulation according to tested transformator 600 needs
Gear.
Described reactive-load compensation catalyst group includes organizing catalyst more, and the group number of described catalyst Guan Bi is different, corresponding input
The compensation capacitance of system is different；
During it is understood that control unit prestores reactive-load compensation catalyst group difference catalyst combination Guan Bi,
The corresponding compensation capacitance put into.So, when control unit calculates the compensation capacitance needing to put into, directly control
Corresponding catalyst group action.
It should be noted that control unit is provided with human-computer interaction interface, operator can be defeated by human-computer interaction interface
Enter the parameters of check system, such as, the number of phases of intermediate transformer, rated capacity, rated voltage, impedance voltage, connection group
Not, load loss；The target current of tested transformator and rated capacity etc..
Have it is understood that intermediate transformer 200 is separate unit many gears output transformator, i.e. intermediate transformer 200
Multiple no-load voltage ratio, can export the voltage of many gears, to meet the test requirements document of tested transformator.
It is understood that this check system provides the power supply of primary side for tested transformator, thus complete tested transformation
The correctness of secondary side during device energising, such as, secondary side wiring and secondary side protection system etc..Guarantee that asking occurs in tested transformator
During topic, secondary protection system can action, make tested transformator deactivate.
The present embodiment provides ultra-high voltage transformer station simulation to put into operation check system, utilizes pressure regulator and the intermediate transformer two-stage to be
Tested transformator realizes the pressure regulation of input voltage, first with pressure regulator, the input voltage of power supply is carried out pressure regulation, after pressure regulation
Voltage is boosted by intermediate transformer again.Can be so that tested transformator provides higher voltage.And control unit can
Need to control the output gear of intermediate transformer with the test according to tested transformator.It addition, in order to reduce to pressure regulator and in
Between the capacity requirement of transformator, this utility model additionally provides compensation Capacitor banks, provides reactive-load compensation for system.And control
Unit can automatically control the amount of capacity compensating Capacitor banks input coefficient according to the needs of tested transformator.This utility model
A kind of ultra-high voltage transformer station is provided to simulate the check system that puts into operation, it is possible to meet the primary side power reguirements of extra-high voltage transformer, make
Carry out simulated high-pressure with low voltage and less electric current, make extra-high voltage transformer secondary side complete the indices examination of extra-high voltage
Test, shorten checking time.
Embodiment two:
Seeing Fig. 2, this figure is that the ultra-high voltage transformer station simulation check system embodiment two that puts into operation that this utility model provides is shown
It is intended to.
The present embodiment provide for concrete check system circuit diagram, from figure 2 it can be seen that this system is three-phase system
System, including A, B and C three-phase.
Wherein, pressure regulator T1 represents, intermediate transformer T2 represents.
Pressure regulator T1 is self coupling column type voltage regulator.
It is connected with three-phase breaker QF between pressure regulator with power supply.
The input of intermediate transformer T2 connects the outfan of pressure regulator T1 by catalyst KM1, intermediate transformer T2's
Outfan connects the input of tested transformator by catalyst KM2.
Meanwhile, catalyst KM3 is connected across between outfan and the input of tested transformator of described pressure regulator T1, KM3
Effect be, when KM3 closes, by intermediate transformer T2 from system short circuit, i.e. intermediate transformer T2 is not involved in work, pressure regulation
The output voltage of device T1 is directly output to tested transformator.It is understood that when KM3 disconnects, during KM1 and KM2 Guan Bi, middle
Transformator T2 participates in transformation work.
Catalyst KM1, KM2 and KM3 in Fig. 2 is only to control whether intermediate transformer participates in the catalyst of work.Permissible
Being understood by, intermediate transformer T2, in order to realize the output of many gears, is typically designed armature winding and/or secondary windings has one
Or multiple tap, so can realize intermediate transformer and there is multiple no-load voltage ratio, thus realize the output of many gears voltage.
It addition, the present embodiment illustrates compensation Capacitor banks, first group of current transformer CT2 in figure represents, the
Two groups of current transformer CT4 represent.
It can be seen that CT2 and CT4 is three, installing one mutually, for measuring three-phase current.
Compensate Capacitor banks C and be articulated in the secondary windings of intermediate transformer and tested transformator by catalyst KM4 parallel connection
Between.Fig. 2 is only illustrate compensation Capacitor banks, in reality, compensates Capacitor banks and include a lot of Capacitor banks, by control
The closed and disconnected of catalyst processed, regulation compensates the capacity of Capacitor banks access system.
Seeing Fig. 3, this figure is to compensate the Capacitor banks schematic diagram by catalyst access system.
From figure 3, it can be seen that often group compensation capacitor includes three-phase, compensate Capacitor banks and include organizing compensation electric capacity more
Device.Often group compensation capacitor is articulated on bus by one group of catalyst KM, and such as n group compensates capacitor correspondence n group catalyst.
Often group catalyst includes three-phase, a corresponding catalyst.Action simultaneously during the three-phase contactor action often organized,
So that the three-phase compensation capacitor of correspondence is concurrently accessed or excises.
Illustrate that control unit that this utility model provides is according to first group of Current Transmit 1 and second below in conjunction with Fig. 2
Group Current Transmit 2 detects the switching of electric current control and compensation Capacitor banks.
First group of Current Transmit 1, for measuring the output electric current of described intermediate transformer secondary windings side, by described
The output electric current of secondary windings side is sent to described control unit；Fig. 2 is shown without control unit.
Second group of Current Transmit 2, for measuring the electric current of described tested transformer inputs, by described tested transformation
The electric current of device input is sent to described control unit；
It is understood that owing to being mounted with benefit between secondary windings and the input of tested transformator of intermediate transformer
Repaying Capacitor banks, therefore, the electric current of intermediate transformer secondary windings output differs with the electric current of tested transformer inputs, because of
This, by detecting the electric current of the two position, whether the compensation capacitance that can verify input coefficient meets requirement.
Described control unit, for reaching described tested transformator target electricity when the electric current of described tested transformer inputs
The N of stream/for the moment, it is judged that whether the output electric current of described secondary windings side divides at the N of the rated current of described intermediate transformer
Within one of, if it is not, then intermediate transformer boosting described in locking, control described intermediate transformer and be depressured to zero.Described N is pre-
If integer.
It is understood that the N that the electric current of second group of Current Transmit 2 detection reaches tested transformator target current divides
For the moment, the electric current of intermediate transformer secondary windings output not can exceed that N/mono-of its rated current, if more than, when
When the output electric current of system reaches tested transformator target current, the output electric current of intermediate transformer secondary windings has exceeded its volume
Determine electric current, intermediate transformer will be burnt.Therefore, illustrate that the compensation capacitance put into is unreasonable, or there is a problem, for
Protection intermediate transformer and reduce the requirement to middle transformer capacity, need to change the compensation capacitance put into.
In order to, during debugging, not damage intermediate transformer, therefore, typically divide with the N of tested transformator target current
One of debug compensate Capacitor banks put into capacity.
Such as, the span of described N can be 8-12, it is of course also possible to select other numerical value.For the side calculated
Just, the value that typically can also select integer, such as N is 10.Principle is to ensure electricity under conditions of system meets certainty of measurement
Flowing to end may be a little bit smaller, makes pressure regulator and intermediate transformer mistake accordingly even when be also unlikely in the case of compensating irrational veritification
Carry.Such as can also select 9,11 etc..
Such as, when the target current of tested transformator is 100A, it is only necessary to regulation pressure regulator and intermediate transformer, the is made
The electric current of two groups of Current Transmit 2 detections is 10A (1/the 10 of 100A).Now judge first group of current transformer
Whether the electric current of CT1 detection is less than or equal to 1/the 10 of the rated current of intermediate transformer, if it is, what explanation put into
The capacity compensating Capacitor banks is appropriate, it is not necessary to regulation compensates the capacity that Capacitor banks puts into.
It addition, the check system that the present embodiment provides, also include voltage detection unit and current detecting unit；
Wherein, described voltage detection unit is the voltmeter V in Fig. 2, and described current detecting unit is the 3rd group in Fig. 2
Current Transmit 1.
Described voltage detection unit, for detecting the input voltage of described intermediate transformer, sends described input voltage
To described control unit；
Described control unit, is used for judging, when described input voltage exceedes voltage threshold, to control described pressure regulator and power supply
Disconnect；
Described current detecting unit, for detecting the input current of described intermediate transformer, sends described input current
To described control unit；
Described control unit, is used for judging when described input current exceedes current threshold, controls described pressure regulator with described
Power supply disconnects.
Voltage detection unit and current detecting unit can ensure that intermediate transformer is without damage, when input voltage and input
When electric current is undesirable, cut off the connection of intermediate transformer and power supply.
Embodiment three:
Seeing Fig. 4, this figure is the intermediate transformer schematic diagram of many gears output that this utility model provides.
It is understood that this transformator arranges tap at armature winding, can root or arrange tap at secondary windings
Select to arrange according to being actually needed.It addition, the tap number arranged can also be as desired to select to arrange, in this utility model
This is not specifically limited.
The present embodiment includes being introduced as a example by a tap by armature winding.
When the armature winding of described transformator includes a tap, described armature winding includes three terminals, is respectively as follows:
First end, tap terminals and the second end；Described array electric control contactor includes: the first three-phase contactor S7 and the two or three contacts
Device S6；
As shown in Figure 4, armature winding and secondary windings all include three-phase, and the annexation of three-phase primary windings is identical, three
The annexation of phase secondary windings is identical.
First end of every phase armature winding refers to red 800, and tap terminals refers to blue 600, and the second end refers to black 0.
First end of armature winding described in three-phase connects the defeated of this device for transformer by described first three-phase contactor S7
Enter end；
The tap terminals of armature winding described in three-phase connects the defeated of this device for transformer by described second three-phase contactor S6
Enter end；
Second end of armature winding described in three-phase links together, and as shown in Figure 4, black the 0 of three-phase links together.
It is understood that when S7 closes, what the armature winding of transformator participated in no-load voltage ratio is the first end and the second end it
Between winding.When S6 closes, what the armature winding of transformator participated in no-load voltage ratio is the winding between tap and the second end.Such as,
When the no-load voltage ratio of the armature winding Yu secondary windings that need transformator is bigger, S7 can be selected to close, S6 disconnects.
It is understood that each three-phase contactor includes three contacts and a coil, when coil obtains electric, three are touched
Point action simultaneously.Three contacts are connected in three-phase path respectively, when the contacts are closed, and the three-phase path conducting at place.
S6 with S7 can control transformator and realize two kinds of different no-load voltage ratios, it addition, the transformator dress that this utility model provides
Putting the no-load voltage ratio that can also realize 1:1, the most not by transformator, input is directly connected to outfan.I.e. come real by the S5 in Fig. 4
Existing.It is discussed in detail below.
Described array electric control contactor also includes: the 3rd three-phase contactor S5；
The input of this device for transformer connects the outfan of this device for transformer by described 3rd three-phase contactor S5；
When described 3rd three-phase contactor S5 Guan Bi, when other three-phase contactors disconnect, the outfan of this device for transformer
Voltage is equal with input terminal voltage.
That is, when three contacts of S5 all close, connect between input and the outfan of this device for transformer, without
Transformator, now transformator is inoperative.I.e. supply voltage is applied directly to the input of test specimen.Such as, supply voltage is
400V, then the input voltage of test specimen is exactly 400V.
It addition, the input of the device for transformer of this utility model offer and outfan can exchange, the primary of transformator
Winding can be as power input, and in like manner, the secondary windings of transformator can also be as power input.Below in conjunction with Fig. 4
In S1, S2 and S3, S4 is described in detail.
Described array electric control contactor also includes: the 4th three-phase contactor S1, the 5th three-phase contactor S2, the 6th three-phase
Catalyst S3 and the 7th three-phase contactor S4；
Described 4th three-phase contactor S1 be connected to the input of this device for transformer and described 3rd three-phase contactor it
Between S5, described 5th three-phase contactor S2 be connected to the input of this device for transformer and described 3rd three-phase contactor S5 it
Between；
Described 6th three-phase contactor S3 is connected to the outfan of described 3rd three-phase contactor S5 and this device for transformer
Between, described 7th three-phase contactor S4 be connected to described 3rd three-phase contactor S5 and this device for transformer outfan it
Between；
First end of described transformer secondary output winding connects this device for transformer by described 6th three-phase contactor S3
Outfan, the first end of described transformer secondary output winding connects the defeated of this device for transformer by described 7th three-phase contactor S4
Go out end；Second end of the secondary windings of described transformator links together, and as shown in Figure 4, the second end 0 end of secondary windings all connects
It is connected together.The secondary windings of the transformator in the present embodiment does not include tap, it is to be understood that secondary windings can also wrap
Including tap, thus increase the no-load voltage ratio quantity of transformator, certainly, corresponding is also required to increase the number of three-phase contactor.
Such as, when left side is as input, S1 closes, and S2 disconnects, and when right side is as outfan, S3 disconnects, and S4 closes.
When right side is as input, S3 closes, and S4 disconnects, and when left side is as outfan, S1 disconnects, and S2 closes.
That is, the input of this device for transformer can connect power supply, it is also possible to it is permissible that outfan connects power supply, i.e. transformator
Realize boosting, it is also possible to realize blood pressure lowering.Such as, apply in the tested transformator of extra-high voltage, can be that test specimen provides multiple etc.
The output voltage of level.Such as, when described armature winding connects power supply and supply voltage is 400V, by switching described array
The different conditions of catalyst in electric control contactor, the output voltage of this device for transformer can be 400V, 600V and 800V；When described
When secondary windings connection power supply and supply voltage are 400V, by switching the difference of catalyst in described array electric control contactor
State, the output voltage of this device for transformer can be 400V, 266V and 200V.
The device for transformer that this utility model embodiment provides, it is provided that the output voltage of multiple grades, it is not necessary in examination
The scene of testing carries out manual taking out stitches or wiring, it is only necessary to by the closed and disconnected of control contactor, which save work
Sequence, and shorten test period.It addition, this utility model utilizes a transformator, it is not necessary to use multiple stage transformator, joint
Cost and space are saved.
The above, be only preferred embodiment of the present utility model, not this utility model is made any in form
Restriction.Although this utility model is disclosed above with preferred embodiment, but it is not limited to this utility model.Any ripe
Know those skilled in the art, without departing under technical solutions of the utility model ambit, all may utilize the side of the disclosure above
Technical solutions of the utility model are made many possible variations and modification by method and technology contents, or be revised as equivalent variations etc.
Effect embodiment.Therefore, every content without departing from technical solutions of the utility model, according to technical spirit of the present utility model to
Any simple modification, equivalent variations and the modification that upper embodiment is done, all still falls within the model of technical solutions of the utility model protection
In enclosing.
Claims (10)
1. a ultra-high voltage transformer station simulates the check system that puts into operation, it is characterised in that including: pressure regulator, intermediate transformer, compensation
Capacitor banks and control unit；
Described pressure regulator, for exporting after supply voltage pressure regulation to described intermediate transformer；
Described intermediate transformer, the voltage for exporting described pressure regulator is supplied to tested transformator after carrying out transformation；
Described intermediate transformer is that the many gears of separate unit export transformator；
Described compensation Capacitor banks is articulated in described intermediate transformer and described tested transformator by reactive-load compensation catalyst group
Between bus on, for system is carried out reactive-load compensation；
Described control unit, the gain of parameter for the parameter according to intermediate transformer and tested transformator needs the compensation put into
Capacitance, controls described reactive-load compensation catalyst group action so that described compensation Capacitor banks puts into corresponding compensation electric capacity and holds
Amount；It is additionally operable to the output gear of intermediate transformer described in the input voltage regulation that needs according to tested transformator.
Ultra-high voltage transformer station the most according to claim 1 simulates the check system that puts into operation, it is characterised in that also include: first
Group current transformer and second group of current transformer；
Described compensation Capacitor banks is articulated in described intermediate transformer and described quilt by described reactive-load compensation catalyst group parallel connection
On bus between examination transformator；
Described first group of current transformer, for measuring the output electric current of described intermediate transformer secondary windings side, by described time
The output electric current of level winding side is sent to described control unit；
Described second group of current transformer, for measuring the electric current of described tested transformer inputs, by described tested transformator
The electric current of input is sent to described control unit；
Described control unit, for reaching described tested transformator target current when the electric current of described tested transformer inputs
N/for the moment, it is judged that whether the output electric current of described secondary windings side is N/mono-of rated current of described intermediate transformer
Within, if it is not, then intermediate transformer boosting described in locking, control described intermediate transformer and be depressured to zero.
Ultra-high voltage transformer station the most according to claim 2 simulates the check system that puts into operation, it is characterised in that the value of described N
Scope is 8-12.
Ultra-high voltage transformer station the most according to claim 1 simulates the check system that puts into operation, it is characterised in that described middle transformation
Device includes: transformator and array electric control contactor；
Described array electric control contactor includes multiple three-phase contactor；
The armature winding of described transformator includes tap, or, the secondary windings of described transformator includes tap, or, described transformation
The armature winding of device and secondary windings all include tap；
Armature winding and the secondary windings of described transformator are interchangeable；
The armature winding of described transformator and secondary windings all include three-phase；
This intermediate transformer includes input and outfan, and described input is connected by one or more described three-phase contactors
Described armature winding, described outfan connects described secondary windings by one or more described three-phase contactors；
Electric pressure switching command outside the reception of described array electric control contactor, performs and described electric pressure switching command
Corresponding catalyst action, the combination of input and outfan to switch this intermediate transformer.
Ultra-high voltage transformer station the most according to claim 4 simulates the check system that puts into operation, it is characterised in that when described transformator
Armature winding when including tap, the tap of described armature winding is one or more；
When the secondary windings of described transformator includes tap, the tap of described secondary windings is one or more.
Ultra-high voltage transformer station the most according to claim 5 simulates the check system that puts into operation, it is characterised in that when described transformator
Armature winding when including a tap, described armature winding includes three terminals, is respectively as follows: the first end, tap terminals and second
End；Described array electric control contactor includes: the first three-phase contactor and the second three-phase contactor；
First end of armature winding described in three-phase connects the input of this intermediate transformer by described first three-phase contactor；
The tap terminals of armature winding described in three-phase connects the input of this intermediate transformer by described second three-phase contactor；
Second end of armature winding described in three-phase links together.
Ultra-high voltage transformer station the most according to claim 6 simulates the check system that puts into operation, it is characterised in that described array electricity
Control catalyst also includes: the 3rd three-phase contactor；
The input of this intermediate transformer connects the outfan of this intermediate transformer by described 3rd three-phase contactor；
When described 3rd three-phase contactor Guan Bi, other three-phase contactors disconnect time, the output end voltage of this intermediate transformer with
Input terminal voltage is equal.
Ultra-high voltage transformer station the most according to claim 7 simulates the check system that puts into operation, it is characterised in that described array electricity
Control catalyst also includes: the 4th three-phase contactor, the 5th three-phase contactor, the 6th three-phase contactor and the 7th three-phase contactor；
Described 4th three-phase contactor is connected between the input of this intermediate transformer and described 3rd three-phase contactor, described
5th three-phase contactor is connected between the input of this intermediate transformer and described 3rd three-phase contactor；
Described 6th three-phase contactor is connected between described 3rd three-phase contactor and the outfan of this intermediate transformer, described
7th three-phase contactor is connected between described 3rd three-phase contactor and the outfan of this intermediate transformer；
First end of described transformer secondary output winding connects the outfan of this intermediate transformer by described 6th three-phase contactor,
First end of described transformer secondary output winding connects the outfan of this intermediate transformer by described 7th three-phase contactor；Described
Second end of the secondary windings of transformator links together.
Ultra-high voltage transformer station the most according to claim 8 simulation puts into operation check system, it is characterised in that when described primary around
When group connection power supply and supply voltage are 400V, by switching the different conditions of catalyst in described array electric control contactor,
The output voltage of this intermediate transformer can be 400V, 600V and 800V；
When described secondary windings connects power supply and supply voltage is 400V, connect by switching in described array electric control contactor
The different conditions of tentaculum, the output voltage of this intermediate transformer can be 400V, 266V and 200V.
Ultra-high voltage transformer station the most according to claim 1 simulates the check system that puts into operation, it is characterised in that also include voltage
Detector unit and current detecting unit；
Described voltage detection unit, for detecting the input voltage of described intermediate transformer, is sent to institute by described input voltage
State control unit；
Described control unit, is used for judging when described input voltage exceedes voltage threshold, controls described pressure regulator and disconnects with power supply
Connect；
Described current detecting unit, for detecting the input current of described intermediate transformer, is sent to institute by described input current
State control unit；
Described control unit, is used for judging when described input current exceedes current threshold, controls described pressure regulator and described power supply
Disconnect.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620524427.6U CN205679701U (en) | 2016-06-01 | 2016-06-01 | A kind of ultra-high voltage transformer station simulates the check system that puts into operation |
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| CN201620524427.6U CN205679701U (en) | 2016-06-01 | 2016-06-01 | A kind of ultra-high voltage transformer station simulates the check system that puts into operation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105807172A (en) * | 2016-06-01 | 2016-07-27 | 国家电网公司 | Ultrahigh voltage substation simulated operation verifying system |
| CN107462798A (en) * | 2017-09-22 | 2017-12-12 | 苏州华电电气股份有限公司 | Portable extra-high voltage station intelligence test integrating device |
| CN112769341A (en) * | 2020-12-28 | 2021-05-07 | 深圳供电局有限公司 | Power supply device |
| CN113777430A (en) * | 2021-09-02 | 2021-12-10 | 国网福建省电力有限公司 | Direct-drive fan voltage ride-through model secondary verification system and method |
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2016
- 2016-06-01 CN CN201620524427.6U patent/CN205679701U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105807172A (en) * | 2016-06-01 | 2016-07-27 | 国家电网公司 | Ultrahigh voltage substation simulated operation verifying system |
| CN107462798A (en) * | 2017-09-22 | 2017-12-12 | 苏州华电电气股份有限公司 | Portable extra-high voltage station intelligence test integrating device |
| CN112769341A (en) * | 2020-12-28 | 2021-05-07 | 深圳供电局有限公司 | Power supply device |
| CN113777430A (en) * | 2021-09-02 | 2021-12-10 | 国网福建省电力有限公司 | Direct-drive fan voltage ride-through model secondary verification system and method |
| CN113777430B (en) * | 2021-09-02 | 2022-12-06 | 国网福建省电力有限公司 | Direct-drive fan voltage ride-through model secondary verification system and method |
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