CN105487018B - Testing device, electric inverse cutting cabinet and testing system of converter - Google Patents
Testing device, electric inverse cutting cabinet and testing system of converter Download PDFInfo
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- CN105487018B CN105487018B CN201510809587.5A CN201510809587A CN105487018B CN 105487018 B CN105487018 B CN 105487018B CN 201510809587 A CN201510809587 A CN 201510809587A CN 105487018 B CN105487018 B CN 105487018B
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- 238000012360 testing method Methods 0.000 title claims abstract description 88
- 238000004804 winding Methods 0.000 claims description 24
- 230000005611 electricity Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 15
- 238000010586 diagram Methods 0.000 description 16
- 206010014357 Electric shock Diseases 0.000 description 10
- 238000012545 processing Methods 0.000 description 9
- 238000002474 experimental method Methods 0.000 description 8
- 230000005284 excitation Effects 0.000 description 4
- 230000009931 harmful effect Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 240000001439 Opuntia Species 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
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- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The embodiment of the invention discloses a testing device, an electrical reverse cutting cabinet and a testing system of a current transformer. The testing arrangement of converter includes controller, first subassembly and the second subassembly that opens circuit, wherein: the first circuit-breaking assembly is connected between a power grid and a first converter to be tested in series, and the second circuit-breaking assembly is connected between the power grid and a second converter to be tested in series; the controller is respectively connected with the first circuit breaking assembly and the second circuit breaking assembly and is used for controlling only one of the first circuit breaking assembly and the second circuit breaking assembly to be in a closed state, and the other one of the first circuit breaking assembly and the second circuit breaking assembly to be in an open state. By adopting the embodiment of the invention, the safety of the converter in the switching process can be improved.
Description
Technical field
The present invention relates to technical field of wind power, more particularly to a kind of test device of current transformer electrically cuts cabinet and test
System.
Background technology
Current transformer is the voltage for making power-supply system, frequency, the number of phases and/or other electrical parameters or the changed electricity of characteristic
Device equipment, current transformer is used to carry out rectification to the electric current of input usually in grid-connected system and inversion is handled, and will handle
During the electric energy obtained afterwards is connected to the grid.
In grid-connected system, the output terminal of power supply is connected with the input terminal of current transformer, the output terminal access of current transformer
Power grid.In practical applications, the performance of current transformer can be usually authenticated and is tested, can also be generated electricity by way of merging two or more grid systems by above-mentioned
System carries out the exchange study of current transformer test, when needing to switch between above two scene, needs the defeated of power supply
Outlet and the input terminal of the first current transformer to be measured disconnect, and the output terminal of the first current transformer to be measured is disconnected with power grid, so
Afterwards, another current transformer (such as the second current transformer) is connected between power supply and power grid by artificial mode.
The hand-off process of aforementioned current transformer has at least the following problems：When being switched between above two scene, need
Current transformer is switched, and its corresponding output terminal is connect with input terminal by artificial mode, so as to which the danger got an electric shock can be caused.
Invention content
The embodiment of the present invention provide a kind of test device of current transformer, it is electrical cut cabinet and test system, by by the
One breaking component is connected between power grid and the first current transformer to be measured, and the second breaking component is connected on power grid and second to be measured
Between current transformer, and closed state be in by the first breaking component of controller control or the second breaking component, with to difference simultaneously
Switching on and off for circuit of net is controlled, so as to improve the safety in current transformer test process.
In order to achieve the above objectives, the embodiment provides a kind of test devices of current transformer.The test device packet
Controller, the first breaking component and the second breaking component are included, wherein：
Described first breaking component is connected between power grid and first current transformer to be measured, the described second breaking component string
It is associated between the power grid and second current transformer to be measured；The controller respectively with the described first breaking component and described the
Two breaking components connections, only one for controlling in the described first breaking component, the second breaking component, which is in, closes
Conjunction state, another is off.
In order to achieve the above objectives, the embodiment provides one kind electrically to cut cabinet, includes the survey of above-mentioned current transformer
Trial assembly is put.
In order to achieve the above objectives, the embodiment provides a kind of test system, including the first current transformer to be measured, on
The electrical of embodiment offer is provided and cuts cabinet, the second current transformer to be measured, power supply and power grid, wherein：
First current transformer to be measured is connected with the described second current transformer to be measured with the power supply respectively；It is described electrically to cut
Cabinet is connected on respectively between the described first current transformer to be measured and the power grid and second current transformer to be measured and the power grid
Between, for controlling the described first current transformer to be measured and the power supply is connected with the power grid or second current transformer to be measured
It is connected with the power supply with the power grid.
The test device of current transformer provided in an embodiment of the present invention electrically cuts cabinet and test system, by the way that first is broken
Road component is connected between power grid and the first current transformer to be measured, and the second breaking component is connected on power grid and the second unsteady flow to be measured
Between device, then, closed form is in by only one in the first breaking component of controller control and the second breaking component
State, another is off, so as to control the first current transformer to be measured and the second current transformer to be measured mutually switches and is connected to the grid,
The test in the grid-connected circuit of current transformer can be completed based on the first breaking component or the second breaking component simultaneously, so as to avoid manually cutting
Danger Electric shock risk caused by when changing current transformer improves the safety in current transformer handoff procedure.
Description of the drawings
Fig. 1 is a kind of structure diagram of the test system of current transformer provided in an embodiment of the present invention；
Fig. 2 is another structure diagram of the test system of current transformer provided in an embodiment of the present invention；
Fig. 3 is the circuit diagram that is respectively connected of current transformer provided in an embodiment of the present invention；
Fig. 4 is the positive structure schematic of breaker provided in an embodiment of the present invention；
Fig. 5 A are that the linear quadratic control of current transformer provided in an embodiment of the present invention protects the connection diagram of circuit；
Fig. 5 B are the connection circuit diagram that breaker provided in an embodiment of the present invention protects circuit with linear quadratic control；
Fig. 6 is that the linear quadratic control of current transformer provided in an embodiment of the present invention protects the touch-control of indicator light position in circuit
Display interface schematic diagram；
Fig. 7 is the positive structure schematic of switching busbar provided in an embodiment of the present invention；
Fig. 8 is the side structure schematic diagram of Two bors d's oeuveres busbar provided in an embodiment of the present invention；
Fig. 9 is the control circuit schematic diagram of the cooling system of the test device of current transformer provided in an embodiment of the present invention；
Figure 10 is provided in an embodiment of the present invention two-phase voltage measuring circuit schematic diagram.
Marginal data：
1st, the first current transformer 2 to be measured, the second current transformer to be measured
3rd, power supply 4, power grid
5th, the test device 51 of current transformer, controller
52nd, the first breaker 521, the first breaker
522nd, the second breaker 523, third breaker
53rd, the second breaker 531, the 4th breaker
532nd, the 5th breaker 533, the 6th breaker
6th, step-up transformer 7, linear quadratic control protection circuit
8th, input terminal 9, switching busbar
10th, Two bors d's oeuveres busbar 11, through-hole
12nd, radiator 121, radiator fan
122nd, switch 13, voltage measuring apparatus
Specific embodiment
The inventive concept of this programme is, by the way that the first breaking component is connected between power grid and the first current transformer to be measured,
And the second breaking component is connected between power grid and the second current transformer to be measured, then, pass through the first breaking group of controller control
Only one in part and the second breaking component is in closed state, another is off, so as to control first to treat
Survey current transformer and the second current transformer to be measured, which mutually switch, to be connected to the grid, while can based on the first breaking component or the second breaking component
The test in the grid-connected circuit of current transformer is completed, Danger Electric shock risk caused by during so as to avoid manual switching current transformer improves current transformer
Safety in handoff procedure.
The test device of current transformer of the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.
Embodiment one
Fig. 1 is a kind of structure diagram of the test system of current transformer provided in an embodiment of the present invention.
As shown in Figure 1, the test device 5 of current transformer for current transformer grid-connected circuit test, the current transformer it is grid-connected
Circuit includes the first current transformer 1 to be measured, the second current transformer 2 to be measured, power supply 3 and power grid 4, the first current transformer 1 to be measured and second and treats
It surveys current transformer 2 to be connected on respectively between power supply 3 and power grid 4, which includes the breaking component 52 of controller 51, first and the
Two breaking components 53, wherein：First breaking component 52 is connected between 4 and first current transformer 1 to be measured of power grid, the second breaking component
53 are connected between 4 and second current transformer 2 to be measured of power grid；Controller 51 respectively with the first breaking breaking component of component 52 and second
53 connections are in closed state for only one in the breaking component 53 of the breaking component 52, second of control first, another
It is off.
Wherein, the test in the grid-connected circuit of current transformer may include phase shortage test and removal of load test of current transformer etc., unsteady flow
The phase shortage test of device may include that single-phase continuity test, two-phase excitation test and three-phase disconnect test etc..First breaking component 52 or
Second breaking component 53 is used to close, carry and disconnect the electric current under normal loop condition, and can close, before the deadline
Carrying and the switching device for disconnecting the electric current under abnormal loop condition.Power supply 3 can be DC power supply or AC power.
Specifically, power supply 3, current transformer and power grid 4 are may include in existing grid-connected system.It can be by above-mentioned grid-connected
Electricity generation system is authenticated and tests to the performance of current transformer, can also carry out current transformer test by above-mentioned grid-connected system
Exchange study, such as training to new employee etc..In this way, the test scene of current transformer type approval test may include two kinds, that is, become
Flow the authentication test scene of device and exchange study scene.In order to easily carry out current transformer pattern to the current transformer under different scenes
Experiment, can be used the first breaking breaking component 53 of component 52 or second to the grid-connected circuit that the current transformer under different scenes is formed into
Row control, so as to test the current transformer in different grid-connected circuits.It wherein, as shown in Figure 1, can be by the first breaking component 52
It is connect with the first current transformer 1 to be measured under a certain scene, the second breaking component 53 and the second current transformer 2 to be measured under another scene
Connection, specifically, when some test scene in authentication test scene and exchange study scene in current transformer, needs
The output terminal of power supply 3 is connected with the input terminal of the first current transformer 1 to be measured, the output terminal of the first current transformer 1 to be measured and first breaks
The input terminal connection of road component 52, the output terminal access power grid 4 of the first breaking component 52, so as to current transformer 1 to be measured to first into
The test in the grid-connected circuit of row.When converting test scene, the first breaking component 52 can be disconnected so that power supply 3, the first change to be measured
It flows the grid-connected circuit that device 1 and power grid 4 are formed to disconnect, the second breaking component 53 is at the same time closed, so that power supply 3, second
The grid-connected circuit communication that current transformer 2 and power grid 4 to be measured are formed, so as to which current transformer 2 to be measured to second carries out the test in grid-connected circuit.
Controller 51 is connect respectively with the first breaking breaking component 53 of component 52 and second, if the first breaking component 52 is in closed form
State, at this point, user is closed the second breaking component 53, controller can control the first breaking component 52 still in closed state, structure
Into grid-connected circuit communication, and the grid-connected circuit that the second breaking component 53 is formed is still in off-state, until user disconnects the
One breaking component 52.
The first breaking breaking component 53 of component 52 and second may include multiple switch equipment, can pass through the closure of switchgear
Current transformer type approval test is carried out with disconnecting, such as phase shortage experiment and load dump test etc..By taking three-phase electricity as an example, each phase can connect
One switchgear by being closed or disconnecting switchgear, may be such that and accordingly mutually be connected into grid-connected circuit, led so as to complete three-phase
The experiments such as logical, one-way conduction, two-phase excitation and three-phase disconnection.
The test device of current transformer provided in an embodiment of the present invention, by the way that the first breaking component is connected on power grid and first
Between current transformer to be measured, and the second breaking component is connected between power grid and the second current transformer to be measured, then, passes through controller
Only one in the breaking component of control first and the second breaking component is in closed state, another is off,
So as to control the first current transformer to be measured and the second current transformer to be measured mutually switches and is connected to the grid, at the same based on the first breaking component or
Second breaking component can complete the test in the grid-connected circuit of current transformer, danger of getting an electric shock caused by during so as to avoid manual switching current transformer
The safety in current transformer handoff procedure is improved in danger.
Embodiment two
Structure diagrams of the Fig. 2 for another embodiment of the test system of current transformer provided by the invention, the implementation
Example can be considered another concrete implementation scheme of Fig. 1.
As shown in Fig. 2, the test device 5 of current transformer for current transformer grid-connected circuit test, the current transformer it is grid-connected
Circuit includes the first current transformer 1 to be measured, the second current transformer 2 to be measured, power supply 3 and power grid 4, the first current transformer 1 to be measured and second and treats
It surveys current transformer 2 to be connected on respectively between power supply 3 and power grid 4, which includes the breaking component 52 of controller 51, first and the
Two breaking components 53, wherein：First breaking component 52 is connected between 4 and first current transformer 1 to be measured of power grid, the second breaking component
53 are connected between 4 and second current transformer 2 to be measured of power grid；Controller 51 respectively with the first breaking breaking component of component 52 and second
53 connections are in closed state for only one in the breaking component 53 of the breaking component 52, second of control first, another
It is off.
As shown in Fig. 2, power supply 3 (DC power supply or AC power) is generally included in existing grid-connected system, is become
Flow device, step-up transformer 6 and power grid 4.Some field in authentication test scene and exchange study scene in current transformer
Jing Shi needs the output terminal of power supply 3 with the input terminal of the first current transformer 1 to be measured being connected, the output terminal of the first current transformer 1 to be measured
It being connect with the input terminal of the first breaking component 52, the output terminal of the first breaking component 52 is connected with the input terminal of step-up transformer 6,
The output terminal access power grid 4 of step-up transformer 6.When converting test scene, the first breaking component 52 can be disconnected so that power supply
3rd, the grid-connected circuit that the first current transformer 1 to be measured, step-up transformer 6 and power grid 4 are formed disconnects, and is at the same time closed the second breaking group
Part 53, so that power supply 3, the second current transformer 2 to be measured, step-up transformer 6 and power grid 4 form grid-connected circuit.
In addition, the test to the grid-connected circuit of current transformer for convenience, power supply 3 can be to be exported using wind power generating set
Power supply.
It, can in each winding in addition, the first 1 and second current transformer 2 to be measured of current transformer to be measured for including two windings
Including three-phase, for this purpose, providing a kind of optional processing in the embodiment of the present invention, specifically include：First breaking component 52 includes the
One breaker 521, the second breaker 522 and third breaker 523, correspondingly, the first breaker 521 and the first current transformer to be measured
Two in 1 the first winding are connected, and the second breaker 522 is connected with the residue in the first winding of the first current transformer 1 to be measured
It connects；Third breaker 523 and being respectively connected in the second winding of the first current transformer 1 to be measured.
Specifically, as shown in figure 3, in the first winding of the input terminal of the first breaker 521 and the first current transformer 1 to be measured
Two are connected, the output terminal access power grid 4 of the first breaker 521, surplus in the input terminal and the first winding of the second breaker 522
Remaining to be connected, the output terminal of the second breaker 522 and access power grid 4 pass through the first breaker 521 and the second breaker 522
Be closed and disconnect, can carry out one-way conduction, two-phase excitation, three be conducted with three-phase disconnect etc. experiments, third breaker 523
Input terminal is connected with each in the second winding, and the output terminal access power grid 4 of third breaker 523 passes through third breaker
523 closure and disconnection, can carry out three be conducted with three-phase disconnect etc. experiments.
For the second breaking component 53, component composition and corresponding processing can be formed with the component of the first breaking component 52
Handle accordingly identical, i.e., the second breaking component 53 includes the 4th breaker 531, the 5th breaker 532 and the 6th breaker
533, correspondingly, the 4th breaker 531 is connected with two in the first winding of the second current transformer 2 to be measured, the 5th breaker 532
It is connected with the residue in the first winding of the second current transformer 2 to be measured；The of 6th breaker 533 and the second current transformer 2 to be measured
Being respectively connected in two windings.Wherein, above three breaker and the second current transformer 2 to be measured, the connection mode of power grid 4 can be with
Connection mode described in one breaking component 52 is identical, reference can be made to above-mentioned related content is handled, details are not described herein.
In addition, in order to reduce the harmful effect caused by grid-connected circuit such as short circuit, power down, multiple linear quadratic controls can be used
Circuit 7 is protected to form controller 51, in order to make controller 51 to first the disconnection of the breaking breaking component 53 of component 52 and second with
Closure is controlled, and can be that each breaker in the first breaking breaking component 53 of component 52 and second sets at least one input
Terminal 8, correspondingly, the input terminal 8 of the output terminal of linear quadratic control protection circuit 7 corresponding thereto connects, it is corresponding for controlling
The closure of breaker and disconnection, and the short circuit in grid-connected circuit and/or power down are protected.
As shown in figure 4, the top of each breaker in the first breaking breaking component 53 of component 52 and second is provided with one
A or multiple input terminal 8, each input terminal 8 may be provided with number, such as 1-1,2-1 or 3-1, the number of input terminal 8
Can be determined according to the number for the phase being connected with respective circuit breakers, for example, based on above-mentioned the first breaker 521 as shown in Figure 3,
The setting of second breaker 522, third breaker 523, the 4th breaker 531, the 5th breaker 532 and the 6th breaker 533,
First breaker 521 is connected to the two-phase in the first winding, and therefore, the first breaker 521 may be provided with two input terminals 8,
As shown in figure 4, correspondingly, the second breaker 522 may be provided with an input terminal 8, third breaker 523 may be provided with three
Input terminal 8.In addition, can be that each input terminal 8 sets corresponding Control protection system, the circuit of each Control protection system leads to
Frequently referred to linear quadratic control protection circuit 7, then linear quadratic control protection 7 schematic diagram of circuit of each Control protection system can be such as Fig. 5 A institutes
Show, the connection circuit diagram of breaker and linear quadratic control protection circuit 7 is shown in Fig. 5 B.Fig. 5 A include three instructions
Indicator light can be set as different colors by lamp, and three indicator lights in Fig. 5 A such as are respectively set to red, green and yellow
Indicator light, available for representing close a floodgate instruction, separating brake instruction or energy storage instruction etc.；Processing unit is used to complete user's combined floodgate or separating brake
The processing logic of operation；M represents motor, for controlling the disconnection of the switch key of breaker and closure, avoids artificial direct
Touching switch button causes Danger Electric shock risk；Switch is further included in Fig. 5 A；Rectangle frame in Fig. 5 A represents coil.Based on such as Fig. 5 A
Linear quadratic control protects circuit 7, and when user clicks combined floodgate or separating brake button, processing unit is referred to by handling logic control accordingly
Show lighting or extinguishing for lamp, corresponding instruction is closed a floodgate or separating brake indicates, while start motor and perform combined floodgate to be shown to user
Or sub-switching operation, so as to complete the closure of breaker and disconnection.Fig. 6 is that the control of current transformer provided in an embodiment of the present invention is protected
The touch display interface schematic diagram of indicator light position in circuit system.Fig. 6 can be the tactile of indicator light position in Fig. 5 A
Display interface is controlled, which can be divided into 7 rows and show, it may include instruction of closing a floodgate, separating brake instruction, electric energy-stored, energy storage
Instruction, chain contact, switch closing and switch opening, wherein, electric energy-stored, switch closing and switch opening is respectively button, user can by closing a floodgate and
Two buttons of separating brake carry out separating brake and closing operation, and instruction of closing a floodgate, separating brake instruction and energy storage instruction may respectively be indicator light interface,
Chain contact can be used for so that only there are one be in closed state in the first breaking breaking component 53 of component 52 and second.
Furthermore, it is contemplated that the lead of the input terminal of breaker in the first breaking breaking component 53 of component 52 and second is usual
It is shorter, it is unfavorable for quick connection of the user between equipment, for this purpose, needs can be connected by corresponding interconnecting device two
A equipment is transferred.The interconnecting device is specifically as follows switching busbar 9, and corresponding processing includes：Switching busbar 9 is connected on the
And/or, the second 53 and second current transformer 2 to be measured of breaking component is connected between one 52 and first current transformer 1 to be measured of breaking component
Between.
Specifically, multiple switching busbars 9 can be set, and switching busbar 9 can be as shown in fig. 7, by the first 52 He of breaking component
The lead of the input terminal of breaker in second breaking component 53 is connect with the one end for busbar 9 of transferring, and the other end is to be measured with first
The current transformer 2 to be measured of current transformer 1 or the second is connected.
It should be noted that for prevent switching busbar 9 for a long time exposure aoxidized in air, can to its surface into
The tin plating processing of row.In order to enable between phase and phase in state of insulation, and the intrusion of foreign matter is avoided to cause short trouble, Mei Gezhuan
High pressure heat-shrinkable T bush can be cased with by connecing busbar 9.
In addition, in order to meet different business demand (the experiment demand of such as 6MW generators), switching busbar 9 can be selected double
Puzzle row 10, as shown in Figure 8.Two bors d's oeuveres busbar 10 includes the single puzzle row of symmetrical two, and every side of Two bors d's oeuveres busbar 10 can
Including multiple through-holes 11, opposite side is provided with through-hole 11 with multiple 11 symmetrical position of through-hole and is used for and the first current transformer to be measured
1 or second current transformer 2 to be measured connect.
Alternatively, it is also possible to by busbar 9 of transferring by the breaker in the first breaking breaking component 53 of component 52 or second
Output terminal is connect with step-up transformer 6, to improve the safety of the test device of current transformer.
Furthermore, it is contemplated that the test device 5 of the current transformer can generate a large amount of heat in the process of work, can be the change
The test device 5 for flowing device sets radiator 12, and specific processing includes：The test device of the current transformer further includes at least one heat dissipation
Device 12, radiator 12 cool down for the breaking component 53 of the breaking component 52, second of device 51, first in order to control and/or switching busbar 9.
Wherein, as shown in figure 9, radiator 12 specifically may include radiator fan 121 and switch 122.
Specifically, Fig. 9 is the control circuit schematic diagram of the cooling system of the test device of the current transformer of the present embodiment.Its
In, the part in dotted line frame is radiator 12, and it is scattered for controlling that a radiator fan 121 and one are may include in the dotted line frame
The switch 122 that Hot-air fan 121 works normally, in order to ensure the safety of operating personnel, switch 122 can select rotary switch.Packet
Including the cooling system of radiator 12 can use other power supplys except grid-connected system to power it, other power supplys can wrap
It includes but is not limited to AC power of 220V voltages in daily life etc..
During phase shortage experiment and load dump test is carried out, the voltage of a certain phase or multiphase can be measured,
Measuring circuit can be as shown in Figure 10, by the voltage measuring apparatus 13 (such as voltmeter) in diagram can measure arbitrary two-phase it
Between voltage.
The test device of current transformer provided in an embodiment of the present invention, on the one hand, by a winding of current transformer to be measured and two
A breaker connection, another winding are connect with a breaker so that user can very easily carry out the grid-connected of current transformer
The test in circuit, and pass through breaker mutually controlling to the current transformer to be measured of access, it improves in current transformer handoff procedure
Safety；On the other hand, it in order to reduce the harmful effect caused by grid-connected circuit such as short circuit, power down, can be set in controller
Multiple linear quadratic controls protect circuits, protect circuit that can not only control unlatching and the closure of breaker by linear quadratic control, but also can be with
Grid-connected circuit is protected, Danger Electric shock risk caused by during so as to avoid manual switching current transformer improves current transformer handoff procedure
In safety, be connected with each other between equipment moreover, employing Two bors d's oeuveres busbar in the test device, in order to equipment
It is interconnected amongst one another, improve safety.
Embodiment three
Based on identical technical concept, the embodiment of the present invention additionally provides one kind and electrically cuts cabinet.This electrically cuts cabinet packet
The test device 5 of the current transformer provided in embodiment two is provided.
Wherein, electrically cutting cabinet may include cabinet, which can be cuboid, and size can be such as 2600 millimeters long, height
2380 millimeters, it is 1500 millimeters wide.The cabinet can be made of angle bar welded framework, and supporting rod is formed using channel steel, while first is disconnected
Channel steel can also be used between the breaking component 53 of road component 52 and second to fix.Electrically cutting the two-sided of cabinet has door, on one side three fan doors,
Door-plate thickness can be 2.0 millimeters, and top, which is equipped with, hangs mother, and bottom can be equipped with channel steel, and sheet metal thickness can be 1.5 millimeters.
It is provided in an embodiment of the present invention electrically to cut cabinet, by the way that the first breaking component is connected on power grid and the first change to be measured
Between flowing device, and the second breaking component is connected between power grid and the second current transformer to be measured, then, passes through controller control the
Only one in one breaking component and the second breaking component is in closed state, another is off, so as to control
It makes the first current transformer to be measured and the second current transformer to be measured mutually switches and is connected to the grid, while disconnected based on the first breaking component or second
Road component can complete the test in the grid-connected circuit of current transformer, and Danger Electric shock risk caused by during so as to avoid manual switching current transformer carries
Safety in high current transformer handoff procedure.
Further, in the embodiment of the present invention, on the one hand, connect a winding of current transformer to be measured and two breakers
It connecing, another winding is connect with a breaker so that user can very easily carry out the test in the grid-connected circuit of current transformer,
And pass through breaker mutually controlling to the current transformer to be measured of access, improve the safety in current transformer handoff procedure；It is another
In order to reduce the harmful effect caused by grid-connected circuit such as short circuit, power down, multiple linear quadratic controls can be set in controller for aspect
Protect circuit, protect circuit that can not only control unlatching and the closure of breaker by linear quadratic control, but can to grid-connected circuit into
Row protection, Danger Electric shock risk caused by during so as to avoid manual switching current transformer improve the safety in current transformer handoff procedure, and
And Two bors d's oeuveres busbar is employed in test device and is connected with each other between equipment, in order to interconnected amongst one another, the raising peace of equipment
Quan Xing.
Example IV
Based on identical technical concept, the embodiment of the present invention additionally provides a kind of test system, as shown in Figure 1 or 2.It should
Test system, which includes the first current transformer 1 to be measured, above-described embodiment three provides electrical cuts cabinet, the second current transformer 2 to be measured, power supply
3 and power grid 4, wherein：First current transformer 1 to be measured is connected with the second current transformer 2 to be measured with power supply 3 respectively；It is electrical to cut cabinet difference
It is connected between the first current transformer 1 and power grid 4 to be measured and between the second current transformer 2 and power grid 4 to be measured, for controlling first
Current transformer 1 and power supply 3 to be measured are connected with power grid 4 or the second current transformer 2 and power supply 3 to be measured is connected with power grid 4.
It specifically, can be by electrically cutting closing for breaker in the first breaking breaking component 53 of component 52 and second in cabinet
It closes and disconnects, carry out one-way conduction, two-phase excitation, three be conducted and the experiments such as disconnect with three-phase, to complete to first unsteady flow to be measured
The test of the current transformer 2 to be measured of device 1 or the second, corresponding processing can be found in the related content in embodiment two, and details are not described herein.
Wherein, power supply 3 can be the power supply exported using wind power generating set.
Test system provided in an embodiment of the present invention, by the way that electrical the first breaking component cut in cabinet is connected on power grid
And first between current transformer to be measured, and the second breaking component is connected between power grid and the second current transformer to be measured, then, passes through
Only one in the first breaking component of controller control and the second breaking component is in closed state, another, which is in, disconnects
State, so as to control the first current transformer to be measured and the second current transformer to be measured mutually switches and is connected to the grid, while based on the first open circuit
Component or the second breaking component can complete the test in the grid-connected circuit of current transformer, caused by during so as to avoid manual switching current transformer
Danger Electric shock risk improves the safety in current transformer handoff procedure.
Further, in the embodiment of the present invention, on the one hand, connect a winding of current transformer to be measured and two breakers
It connecing, another winding is connect with a breaker so that user can very easily carry out the test in the grid-connected circuit of current transformer,
And pass through breaker mutually controlling to the current transformer to be measured of access, improve the safety in current transformer handoff procedure；It is another
In order to reduce the harmful effect caused by grid-connected circuit such as short circuit, power down, multiple linear quadratic controls can be set in controller for aspect
Protect circuit, protect circuit that can not only control unlatching and the closure of breaker by linear quadratic control, but can to grid-connected circuit into
Row protection, Danger Electric shock risk caused by during so as to avoid manual switching current transformer improve the safety in current transformer handoff procedure, and
And Two bors d's oeuveres busbar is employed in test device and is connected with each other between equipment, in order to interconnected amongst one another, the raising peace of equipment
Quan Xing.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in change or replacement, should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of test device of current transformer, which is characterized in that including：
Controller (51), the first breaking component (52) and the second breaking component (53), wherein：
Described first breaking component (52) is connected between power grid (4) and the first current transformer (1) to be measured, the described second breaking component
(53) it is connected between power grid (4) and the second current transformer (2) to be measured；The controller (51) respectively with the described first breaking component
(52) it is connected with the second breaking component (53), for controlling the described first breaking component (52), the second breaking component
(53) only one in is in closed state, another is off.
2. test device according to claim 1, which is characterized in that the described first breaking component (52) includes the first open circuit
Device (521), the second breaker (522) and third breaker (523), wherein,
First breaker (521) is connected with two in the first winding of the described first current transformer (1) to be measured, and described second
Breaker (522) is connected with the residue in the first winding of the described first current transformer (1) to be measured；The third breaker
(523) with being respectively connected in the second winding of the described first current transformer (1) to be measured.
3. test device according to claim 1, which is characterized in that the described second breaking component (53) includes the 4th open circuit
Device (531), the 5th breaker (532) and the 6th breaker (533), wherein,
4th breaker (531) is connected with two in the first winding of the described second current transformer (2) to be measured, and the described 5th
Breaker (532) is connected with the residue in the first winding of the described second current transformer (2) to be measured；6th breaker
(533) with being respectively connected in the second winding of the described second current transformer (2) to be measured.
4. test device described in any one of claim 1 to 3, which is characterized in that the described first breaking component (52)
Include at least one input terminal (8) with the breaker in the described second breaking component (53)；The controller (51) is by multiple
Linear quadratic control protection circuit (7) is formed, and the linear quadratic control protects the input terminal of the output terminal of circuit (7) corresponding thereto
(8) it connects, for controlling the closure of respective circuit breakers and disconnection.
5. test device according to claim 4, which is characterized in that the test device further includes switching busbar (9), string
It is associated between the described first breaking component (52) and first current transformer (1) to be measured；And/or it is connected on second open circuit
Between component (53) and second current transformer (2) to be measured.
6. test device according to claim 5, which is characterized in that the switching busbar (9) is Two bors d's oeuveres busbar (10).
7. test device according to claim 6, which is characterized in that the test device further includes at least one radiator
(12), the radiator (12) is for for the controller (51), the first breaking component (52), the second breaking component
(53) and/or the switching busbar (9) cools down.
8. one kind electrically cuts cabinet, which is characterized in that the test dress including the claims 1-7 any one of them current transformers
It puts (5).
9. a kind of test system, which is characterized in that including the first current transformer (1) to be measured, electrically cut as claimed in claim 8
Cabinet, the second current transformer (2) to be measured, power supply (3) and power grid (4), wherein：
First current transformer (1) to be measured is connected with the described second current transformer (2) to be measured with the power supply (3) respectively；The electricity
Gas is cut cabinet and is connected on respectively between the described first current transformer (1) to be measured and the power grid (4) and second unsteady flow to be measured
Between device (2) and the power grid (4), for controlling the described first current transformer (1) to be measured and the power supply (3) and the power grid
(4) connection or second current transformer (2) to be measured and the power supply (3) are connected with the power grid (4).
10. test system according to claim 9, which is characterized in that the power supply (3) is defeated using wind power generating set
The power supply gone out.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510809587.5A CN105487018B (en) | 2015-11-19 | 2015-11-19 | Testing device, electric inverse cutting cabinet and testing system of converter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510809587.5A CN105487018B (en) | 2015-11-19 | 2015-11-19 | Testing device, electric inverse cutting cabinet and testing system of converter |
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| Publication Number | Publication Date |
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| CN105487018A CN105487018A (en) | 2016-04-13 |
| CN105487018B true CN105487018B (en) | 2018-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677971B (en) * | 2017-10-20 | 2020-01-14 | 天津瑞能电气有限公司 | Comprehensive test platform for high-power converter |
| CN107860994B (en) * | 2017-10-20 | 2020-01-14 | 天津瑞能电气有限公司 | Offshore full-power water-cooling converter test platform |
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| CN1198849A (en) * | 1995-10-06 | 1998-11-11 | 丹福斯有限公司 | Method for measuring fault currents in an inverter and inverter with controlled semiconductor switches |
| CN202305695U (en) * | 2011-10-20 | 2012-07-04 | 无锡清源电气科技有限公司 | Test platform for universal current transformer product |
| CN103217641A (en) * | 2013-04-09 | 2013-07-24 | 许继集团有限公司 | Device and method for testing CROWBAR circuit of wind power converter |
| CN203385797U (en) * | 2012-12-22 | 2014-01-08 | 北京科诺伟业科技股份有限公司 | Power test platform for full power converter |
| CN205120936U (en) * | 2015-11-19 | 2016-03-30 | 北京金风科创风电设备有限公司 | Testing arrangement of converter, electric cabinet and test system cut |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2961603A1 (en) * | 2010-06-17 | 2011-12-23 | Commissariat Energie Atomique | DIAGNOSIS OF A PHOTOVOLTAIC DEVICE |
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2015
- 2015-11-19 CN CN201510809587.5A patent/CN105487018B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1198849A (en) * | 1995-10-06 | 1998-11-11 | 丹福斯有限公司 | Method for measuring fault currents in an inverter and inverter with controlled semiconductor switches |
| CN202305695U (en) * | 2011-10-20 | 2012-07-04 | 无锡清源电气科技有限公司 | Test platform for universal current transformer product |
| CN203385797U (en) * | 2012-12-22 | 2014-01-08 | 北京科诺伟业科技股份有限公司 | Power test platform for full power converter |
| CN103217641A (en) * | 2013-04-09 | 2013-07-24 | 许继集团有限公司 | Device and method for testing CROWBAR circuit of wind power converter |
| CN205120936U (en) * | 2015-11-19 | 2016-03-30 | 北京金风科创风电设备有限公司 | Testing arrangement of converter, electric cabinet and test system cut |
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| CN105487018A (en) | 2016-04-13 |
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