CN108614168A - Generating field current transformer total power test method - Google Patents
Generating field current transformer total power test method Download PDFInfo
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- CN108614168A CN108614168A CN201611142752.7A CN201611142752A CN108614168A CN 108614168 A CN108614168 A CN 108614168A CN 201611142752 A CN201611142752 A CN 201611142752A CN 108614168 A CN108614168 A CN 108614168A
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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
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Abstract
The invention discloses a kind of generating field current transformer total power test methods.This method includes：Pusher side breaker and net side breaker are disconnected, the step of electrical connection to disconnect current transformer and generator and power grid；The step of by three-phase bus short circuit between net side breaker and net side filter；The step of direct current pre-charging device being connected for the DC bus capacitor of generating field current transformer；Execute following steps (a) and/or (b)：(a) pusher side AC fuse is disconnected to test with the net side total power for carrying out generating field current transformer to disconnect electrical connection and the closed net top-cross flow fuse of generator-side converter wear and net side filter；(b) generator side of pusher side AC fuse and net side filter are electrically connected, net side AC fuse is disconnected to disconnect the electrical connection of net side current transformer and net side filter, pusher side AC fuse is closed and is tested with the pusher side total power for carrying out generating field current transformer.
Description
Technical field
The invention belongs to converter topology field more particularly to a kind of generating field current transformer total power test methods.
Background technology
Typically the course of work of generating field generating set is：After generator converts natural energy resources to electric energy, then pass through
Current transformer converts the electric energy that generator exports to the form of energy with grid voltage amplitude, frequency and phase non-colinear position, and steady
Surely it is transported to power grid, is finally realized grid-connected.In this process, can current transformer is the key that generating set smoothly generate electricity by way of merging two or more grid systems
The performance indicator of one of component, current transformer will have a direct impact on the power quality of power grid；If the index of even current transformer is not achieved
It is required that the safety of power grid can be threatened.
Such as in wind-power electricity generation, by taking direct-drive aerogenerator set as an example, because of its good power grid and motor friendly
Can, outstanding fault ride-through of power grid ability and non-gear box transmission etc. many merits, wind power generation field application increasingly
Extensively.
Typically the course of work of direct-drive aerogenerator set is：Wind energy drives the rotation of generator blade, blade to move
Can electric energy be converted by synchronous generator, be converted and grid voltage amplitude, frequency the electric energy that generator exports to by current transformer
The form of energy of rate and phase non-colinear position, and stabilization is transported to power grid, finally realizes grid-connected.In this process, current transformer is
The performance indicator of one of the critical component that can unit smoothly generate electricity by way of merging two or more grid systems, current transformer will have a direct impact on the power quality of power grid；
If the index of even current transformer does not reach requirement, the safety of power grid can be threatened.
Therefore, before Wind turbines formally reach the standard grade and generate electricity by way of merging two or more grid systems, it is necessary to be tested for the property to it.Test includes unsteady flow
The manufacture of device producer test and wind-powered electricity generation complete machine producer wind field on-the-spot test.《GB T25387.2-2010 wind-driven generators
Group full power convertor part 2：Test method》Define the laboratory simulation test method of current transformer performance test.But
The test environment of testing stand is unable to the various operating conditions of comprehensive simulated wind field, can not predict and reflect strictly according to the facts the scene of current transformer
Performance, so, except testing stand simulation test, it is necessary to carry out on-the-spot test.In testing at the scene, there is event in wind turbine
Barrier, needs to be accurately positioned fault point and failure cause；Field working conditions are different from the test environment of factory, such as wind field network voltage
Fluctuation, symmetry, harmonic content etc., it is also desirable to which debugging sets current transformer performance parameter again at scene；If live unsteady flow can be realized
Total power test in device scene then has ready conditions and determines the failure and performance issue of all current transformers itself, and can at the scene into
The more complicated test of row and retrofit work are minimum cost and safest live current transformer failure detection schemes and debugging
Scheme.
Fig. 1 is existing wind electric converter circulation full power trial (FPT) system structure diagram.Wherein, wind electric converter 9 is main
It consists of the following parts：Net side breaker 1 successively with net side filter 3, net side AC fuse 4, net side current transformer 5, direct current
Lateral capacitance 6, generator-side converter wear 7 are connected in series with, and pusher side AC fuse 8 is connected in series with generator-side converter wear 7.Wherein net side open circuit
Device 1 is used to control the break-make of the grid-connected isolating transformer of wind electric converter 30；Net side filter 3 is used for wind electric converter current harmonics
Filter out, to ensure the power quality of electric current；Net side AC fuse 4 under AC overcurrent failure for protecting current transformer；Net
Side current transformer 5, DC bus capacitor 6 and generator-side converter wear 7 collectively constitute the power section of wind electric converter.Some newer types number
Current transformer is additionally provided with the pre-charge circuit 2 in parallel with net side breaker 1, and pre-charge circuit 2 is used for right before current transformer starts
Wind power direct current lateral capacitance capacitance 6 charges.
In circulation experiment, the net side cutout 1 of wind electric converter and power grid isolating transformer 30 are passed through into 27 phase of cable
Connection, pusher side AC fuse 8 passes sequentially through cable 21,23 with external pusher side reactor 22, pusher side breaker 24 and connects, and leads to
It crosses cable 25 and accesses power grid 26.When experiment, net side breaker 1 and pusher side breaker 24 are all in closed state so that net side becomes
Stream device 5 and generator-side converter wear 7 are all connected with power grid or by isolating transformer with power grid, and generator-side converter wear 7 is inhaled by power grid
Active energy is received, active energy is fed back to power grid by the generator-side converter wear 5 connected by DC side, to reach current transformer total power
The function of operation is realized.
At the scene when testing results, to be built according to the system structure of the laboratory circulation test of Fig. 1 and carry out test by chance
To all difficulties：(1) additional experimental site is needed；(2) isolating transformer and pusher side reactor, pusher side breaker etc., cost
To be very high, and excessive cable connection is complex and expends working hour；(3) experimental facilities is excessive, is not easy to mobile transport
And transformation；(4) it needs to remove all components and cable to carry out next experiment, heavy workload after testing.
Invention content
An embodiment of the present invention provides a kind of generating field current transformer total power test methods, can not depend on electric network state,
It, can the repeated multiple times total power test for carrying out current transformer in the short time and to power grid without impact.
An embodiment of the present invention provides a kind of generating field current transformer total power test methods, including：Disconnect pusher side breaker
With net side breaker, the step of electrical connection to disconnect generating field current transformer and generator and power grid；By net side breaker and
The step of three-phase bus short circuit between net side filter；Direct current preliminary filling Denso is connected for the DC bus capacitor of generating field current transformer
The step of setting；Execute following steps (a) and/or (b)：(a) pusher side AC fuse is disconnected to disconnect generator-side converter wear and net side
The electrical connection of filter and closed net top-cross flow fuse are tested with the net side total power for carrying out generating field current transformer；(b)
The generator side of pusher side AC fuse and net side filter are electrically connected, disconnect net side AC fuse to disconnect net
The electrical connection of side current transformer and net side filter is closed pusher side AC fuse with the full work(of the pusher side for carrying out generating field current transformer
Rate is tested.
The generating field current transformer total power test method provided according to embodiments of the present invention, passes through the base in existing current transformer
One pre-charging device that can work independently for not depending on network voltage power supply is provided on plinth；Increase current transformer breaker and net side
Three-phase bus short-circuit structure among filter is to be net side and machine by the reactor net side port three-phase short circuit of net side filter
Reactor current provides circuit when the total power test of side；Increase net side and pusher side cable connection structure, leads to when testing at the scene
It crosses cable to be attached generator-side converter wear and network reactor so that be machine when carrying out the test of generator-side converter wear total power
Its load network reactor of the current direction of side current transformer provides current path；Pusher side or the AC fuse of net side are disconnected, it is real
The total power test condition of existing net side or pusher side, need not increase isolating transformer and pusher side cabinet external reactance device and cutout etc.,
Experimental cost is low, and not excessive cable connection is to which test program is simple and consuming working hour is few, simultaneously because need not be additional
Increase experimental facilities, also has the advantages that transport easy to remove and Reconstruction in field, all components need not be removed after test
With cable to carry out next experiment, and then reduce workload.The total power detection that current transformer is carried out by this method, was both disobeyed
Bad power grid does not depend on the case where input energy sources yet, has broken away from the restriction of work on the spot external environment, has wider adaptability.
The test of current transformer can not depend on electric network state, and to power grid without impact, can repeated multiple times progress current transformer in the short time
Power is tested；Equally, the start and stop of current transformer are also not dependent on generator system, so need not transfer entire generator mechanical and
Electric-control system reaches the total power test condition for starting current transformer and carrying out pusher side and net side without relying on generator system, and
Without additional experimental site, detection space is saved.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will make below to required in the embodiment of the present invention
Attached drawing is briefly described, it should be apparent that, drawings described below is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is existing wind electric converter circulation full power trial (FPT) system structure diagram；
Fig. 2 is the wind electric converter on-the-spot test attachment structure schematic diagram of an embodiment of the present invention；
Fig. 3 is system structure of the wind electric converter test method of an embodiment of the present invention when carrying out total power test
Schematic diagram；
Fig. 4 is the method flow diagram of the wind electric converter test method of an embodiment of the present invention；
Fig. 5 is circuit of the wind electric converter test method of an embodiment of the present invention when carrying out the test of net side total power
Schematic diagram；
Fig. 6 is circuit of the wind electric converter test method of an embodiment of the present invention when carrying out the test of pusher side total power
Schematic diagram.
In figure：
1. net side breaker；2. pre-charge circuit；3. net side filter；
3 ', test load network reactor；4. net side AC fuse；
5. net side current transformer；6. DC bus capacitor；7. generator-side converter wear；
8. pusher side AC fuse；9. wind electric converter；
10. three-phase bus short-circuit structure；11. direct current pre-charging device；
21. cable；22. external pusher side reactor；23. cable；24. pusher side breaker；
25. cable；26. power grid；27. cable；28. pusher side cable connection structure；
29. net side cable connection structure；30. power grid isolating transformer；40. wind-driven generator.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
The every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
The feature and exemplary embodiment of various aspects of the invention is described more fully below.In following detailed description
In, it is proposed that many details, in order to provide complete understanding of the present invention.But to those skilled in the art
It will be apparent that the present invention can be implemented in the case of some details in not needing these details.Below to implementing
The description of example is just for the sake of by showing that the example of the present invention is better understood from the present invention to provide.The present invention never limits
In any concrete configuration set forth below and algorithm, but cover under the premise of without departing from the spirit of the present invention element,
Any modification, replacement and the improvement of component and algorithm.In the the accompanying drawings and the following description, well known structure and skill is not shown
Art is unnecessary fuzzy to avoid causing the present invention.
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, thesing embodiments are provided so that the present invention more
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.In the figure in order to clear
It is clear, it may be exaggerated the thickness of region and layer.Identical reference numeral indicates same or similar structure in figure, thus will save
Slightly their detailed description.
In addition, described feature, structure or characteristic can be incorporated in one or more implementations in any suitable manner
In example.In the following description, many details are provided to fully understand the embodiment of the present invention to provide.However,
It will be appreciated by persons skilled in the art that technical scheme of the present invention can be put into practice without one in the specific detail or more
It is more, or other methods, constituent element, material may be used etc..In other cases, be not shown in detail or describe known features,
Material or operation to avoid the fuzzy present invention major technique intention.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Continue by taking wind-power electricity generation scene as an example, Fig. 2 is the wind electric converter on-the-spot test connection of an embodiment of the present invention
If structural schematic diagram but utilizes condition and the connection at wind field scene not by the way of Fig. 1, then the one of wind electric converter
The general on-the-spot test connection type of kind is as shown in Figure 2.Wherein, external pusher side reactor 22, pusher side exchange fusing are not used
Device 8 is connected to generator 40 by cable 23.Connecting cable 25 is eliminated, generator-side converter wear 7 no longer absorbs from power grid functional
Amount, but obtain energy from generator.Since wind electric converter 9 will be separately connected power grid and generator, running must foundation
Field working conditions start entire wind power system, therefore are difficult to have ready conditions the independent capacity operation for carrying out wind electric converter to be used for reaching
To the purpose of fault detect.Existing wind electric converter lacks live total power testing current function and condition, can only take scene
Band fans load commissioning test repeatedly, transfers entire blower fan system to detect the failure of current transformer；It in this way will be to entire wind turbine
System and power grid have impact, and since live wind speed is uncertain, scene may not can also ensure to reach needed for Operation at full power
The condition wanted.And transport go back to producer after removing and be detected and repair, long in time limit, of high cost, live wind-resources loss will be faced
Big problem.
Due to figures 1 and 2 show that the total power test method of existing current transformer has drawbacks described above, on solving
Technical problem is stated, below by taking wind power plant scene as an example, to a kind of full work(of generating field current transformer provided in an embodiment of the present invention
Rate test method is described in detail.
Fig. 3 is system structure of the wind electric converter test method of an embodiment of the present invention when carrying out total power test
Schematic diagram；Fig. 4 is the method flow diagram of the wind electric converter test method of an embodiment of the present invention.As shown in Figure 3 and Figure 4,
Wherein, the generating field current transformer total power test method, including：S410 disconnects pusher side breaker 24 and net side breaker 1, with
Disconnect the electrical connection of generating field current transformer 9 and generator 40 and power grid 26.It should be noted that execute S410 be in order to ensure
Wind electric converter is detached from motor and power grid, it is understood that be the entire change in order to ensure when current transformer total power is tested
Stream device system 9 is not electrically connected with power grid and generator, so that converter system becomes an independent test device.
S420, by the three-phase bus short circuit between net side breaker 1 and net side filter 3.It should be noted that three-phase bus short circuit is
Reactor current provides circuit when being tested for net side and pusher side total power, after three-phase bus short circuit, original net side in current transformer
Filter 3 can be considered as test load network reactor 3 ' and provide condition for the total power test of generating field current transformer 9.S430,
Direct current pre-charging device 11 is connected for the DC bus capacitor 6 of generating field current transformer 9.It should be noted that the direct current preliminary filling Denso
It sets 11 and is different from existing pre-charge circuit 2, need not rely on the electric energy work of power grid, which can be only
Vertical work does not depend on network voltage power supply.Direct current pre-charging device 11 includes at least one independent current source, and being configured to can
It is independent to charge to DC bus capacitor 6, and the voltage at 6 both ends of DC bus capacitor is made to maintain scheduled voltage.Execute S440a and/or
S440b：S440a disconnects pusher side AC fuse 8 to disconnect the electrical connection of generator-side converter wear 7 and net side filter 3, and
Closed net top-cross flow fuse 4 is tested with the net side total power for carrying out generating field current transformer 9；S440b, by pusher side AC fuse
8 generator side is electrically connected with net side filter 3, disconnects net side AC fuse 4 to disconnect net side current transformer 5 and net
The electrical connection of side filter 3 is closed pusher side AC fuse 8 and is tested with the pusher side total power for carrying out generating field current transformer 9.It is logical
It crosses and a pre-charging device that can work independently for not depending on network voltage power supply is provided on the basis of existing current transformer；Increase
Three-phase bus short-circuit structure 10 among current transformer breaker and net side filter 3 is with by the reactor net side of net side filter 3
Port three-phase short circuit, reactor current provides circuit when being tested for net side and pusher side total power；Increase net side and pusher side cable connects
Generator-side converter wear 7 and network reactor are attached when testing at the scene by cable by binding structure so that are carrying out pusher side
When 7 total power of current transformer is tested, for the current direction of generator-side converter wear 7, its load network reactor provides current path；It disconnects
The AC fuse of pusher side or net side realizes the total power test condition of net side or pusher side, need not increase isolating transformer and
Pusher side cabinet external reactance device and cutout etc., experimental cost is low, and not excessive cable connection is to which test program is simple and expends
Working hour is few, simultaneously because need not additionally increase experimental facilities, also has the advantages that transport easy to remove and Reconstruction in field, test
After need not remove all components and cable to carry out next experiment, and then reduce workload.It is carried out by this method
The total power of current transformer detects, and the case where both not depended on power grid or do not depended on input energy sources, has broken away from work on the spot external environment
Restriction, have wider adaptability.The test of current transformer can not depend on electric network state, and to power grid without impact, can be short
The repeated multiple times power experiment for carrying out current transformer in time；Equally, the start and stop of current transformer are also not dependent on generator system, so
Entire generator mechanical and electric-control system need not be transferred, without rely on generator system reach start current transformer carry out pusher side and
The total power test condition of net side, and it is not necessarily to additional experimental site, save detection space.
According to one embodiment, this method can also include respectively between net side breaker 1 and net side filter 3 three
On three-phase bus on phase busbar, between net side filter 3 and net side AC fuse 4 and pusher side breaker 24 is handed over pusher side
Cable connection structure is set on three-phase bus between flow fuse 8.In one example, which can be by setting
The cable mounting hole set on the copper bar of three-phase bus is constituted.In one example, S420 includes：Short-circuiting copper bar is bridged and is fixed
In cable mounting hole.It in one example, can be by short-circuiting copper bar simultaneously when the total power of generating field current transformer 9 is tested
Bridging is fixed on three-phase copper bar, and to achieve the purpose that short circuit, the cable connection structure is by as three-phase bus short circuit knot at this time
Structure 10 is used for the reactor net side port three-phase short circuit of net side alternating current filter 3, to be surveyed when net side and the test of pusher side total power
Examination load 3 ' electric current of network reactor provides circuit.In one example, S440b includes：The both ends of cable 25 are separately connected
Cable mounting hole on three-phase bus and pusher side breaker 24 between net side filter 3 and net side AC fuse 4 and machine
In cable mounting hole on three-phase bus between top-cross flow fuse 8.It should be noted that here, the effect of cable 25 is
It is attached by generator-side converter wear 7 and due to original net side filter 3 that short circuit becomes test load network reactor 3 ' so that
When carrying out the test of 7 total power of generator-side converter wear, for the current direction of generator-side converter wear 7, its test load network reactor 3 ' carries
For current path.In one example, it is configured in the connection line between pusher side breaker 24 and pusher side AC fuse 8
Pusher side cable connection structure 28, configured with net side electricity in the connection line between net side AC fuse 4 and net side filter 3
Cable connection structure 29 is electrically connected between pusher side cable connection structure 28 and net side cable connection structure 29.In one example,
This method further includes that above-mentioned net side AC fuse 4 and pusher side AC fuse 8 can be selected with manual removable unloading functions
Fuse, convenient for the Reconstruction in field to test circuit.
According to one embodiment, S430, direct current pre-charging device 11 may include concatenated independent current source, power supply lateral circuit
With rectification lateral circuit, independent current source, power supply lateral circuit and rectification lateral circuit are sequentially connected in series, and lateral circuit of powering and rectification lateral circuit are logical
Cross potential device coupling.Lateral circuit of powering may include concatenated power switch and potential device primary side, and rectification lateral circuit includes
The positive negative output of concatenated potential device pair side, variable resistance and AC-DC fairings, AC-DC fairings is separately connected
To the both ends of DC bus capacitor 6.In one example, independent current source, power supply lateral circuit and rectification lateral circuit can be with three intersections
For stream power supply, in addition, two-phase power supply independent current source and corresponding power-supply rectifying circuit or three-phase independent current source and others
The combination of various corresponding power supply lateral circuits or rectification lateral circuit can also be for realizing the think of of independent direct current pre-charging device 11
Think.For example, in the utility model patent of Chinese Patent Application No. CN201420836236.4 and CN201520070574.6, all
The embodiment of a variety of different direct current pre-charging devices 11 is provided, these modes can be used for realizing this by simple modification
Power supply lateral circuit in the independent direct current pre-charging device 11 of embodiment and/or rectification lateral circuit.
Fig. 5 is circuit of the wind electric converter test method of an embodiment of the present invention when carrying out the test of net side total power
Schematic diagram.As shown in figure 5, passing through above-mentioned wind electric converter test method so that when testing 5 total power of net side current transformer,
Generator-side converter wear 7 and net side filter 3 can electrical isolation, be isolated, generator-side converter wear 7 be in off position, logical
The test circuit for crossing this method formation contains DC bus capacitor 6, net side current transformer 5 and test load network reactor 3 '
(part for net side filter 3), and by cable connection, one end of test load network reactor 3 ' connects net side current transformer
5, other end short circuit forms current loop, to have 5 total power test condition of net side current transformer.
Fig. 6 is circuit of the wind electric converter test method of an embodiment of the present invention when carrying out the test of pusher side total power
Schematic diagram.Pass through above-mentioned wind electric converter test method so that when 7 total power of generator-side converter wear is tested, net side current transformer 5 with
3 electrical isolation of net side alternating current filter so that when pusher side carries out total power test, net side current transformer 5 is independent, in not work
Make state, the test circuit formed by this method contains DC bus capacitor 6, generator-side converter wear 7 and test load net side
Reactor 3 ' (part for net side filter 3), and by cable connection, one end of test load network reactor 3 ' connects machine
Side current transformer 7, other end short circuit form current loop, to have 7 total power test condition of generator-side converter wear.
In the test of the total power of the above net side and generator-side converter wear, due to using list in independent direct current pre-charging device 11
Only for electric installation, therefore the test of current transformer can not depend on electric network state, and to power grid without impact, can be in the short time repeatedly
Repeatedly carry out the power experiment of current transformer；Equally, the start and stop of current transformer are also not dependent on wind powered generator system and pitch-controlled system
State reach without relying on blower fan system and start current transformer item so need not transfer entire wind turbine mechanically and electrically controls system
Part.To which system and method for the invention make the full power experiment of current transformer both not depend on power grid or not depend on wind speed, break away from
The restriction of work on the spot external environment has wider adaptability.
Generating field current transformer total power test method according to embodiments of the present invention can also be applied to the other kinds of energy
In generating field scene, due to becoming with the above wind power plant when carrying out total power test to current transformer in air pressure type energy generating field
The method for flowing device progress total power test is similar with step, for sake of simplicity, details are not described herein.
In addition, the terms "and/or", only a kind of incidence relation of description affiliated partner, indicates may exist
Three kinds of relationships, for example, A and/or B, can indicate：Individualism A exists simultaneously A and B, these three situations of individualism B.Separately
Outside, character "/" herein, it is a kind of relationship of "or" to typically represent forward-backward correlation object.
It should be understood that in embodiments of the present invention, " B corresponding with A " indicates that B is associated with A, and B can be determined according to A.But
It should also be understood that determining that B is not meant to determine B only according to A according to A, B can also be determined according to A and/or other information.
It needs to define, the invention is not limited in specific configuration described above and shown in figure and processing.Also,
For brevity, the detailed description to known method technology is omitted here.In the above-described embodiments, it has been described and illustrated several
Specific step is as example.But procedure of the invention is not limited to described and illustrated specific steps, this field
Technical staff can be variously modified after the spirit for understanding the present invention, modification and addition, or between changing the step
Sequentially.
It is apparent to those skilled in the art that for convenience of description and succinctly, foregoing description is
The specific work process of system, device and unit, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component
It can be combined or can be integrated into another system, or some features can be ignored or not executed.In addition, shown or beg for
The mutual coupling, direct-coupling or communication connection of opinion can be the INDIRECT COUPLING by some ports, device or unit
Or communication connection, can also be electricity, mechanical or other form connections.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
It is that each unit physically exists alone, can also be during two or more units are integrated in one unit.It is above-mentioned integrated
The form that hardware had both may be used in unit is realized, can also be realized in the form of SFU software functional unit.
The above description is merely a specific embodiment, but scope of protection 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 various equivalent modifications or replace
It changes, these modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection domain subject to.
Claims (10)
1. a kind of generating field current transformer total power test method, which is characterized in that including：
Disconnect pusher side breaker (24) and net side breaker (1), with disconnect the generating field current transformer (9) and generator (40) and
The electrical connection of power grid (26)；
By the three-phase bus short circuit between net side breaker (1) and net side filter (3)；
Direct current pre-charging device (11) is connected for the DC bus capacitor (6) of the generating field current transformer (9)；Execute following steps
(a) and/or (b)：
(a) pusher side AC fuse (8) is disconnected to disconnect the electrical connection of generator-side converter wear (7) and net side filter (3), and
Closed net top-cross flow fuse (4) is tested with the net side total power for carrying out the generating field current transformer (9)；
(b) generator side of the pusher side AC fuse (8) and the net side filter (3) are electrically connected, are disconnected
It is molten to be closed pusher side exchange to disconnect the electrical connection of net side current transformer (5) and net side filter (3) for net side AC fuse (4)
Disconnected device (8) is tested with the pusher side total power for carrying out the generating field current transformer (9).
2. according to the method described in claim 1, it is characterized in that, the direct current pre-charging device (11) includes at least one only
Vertical power supply, and be configured to independently to charge to DC bus capacitor (6) and the voltage at the DC bus capacitor (6) both ends is made to tie up
Hold scheduled voltage.
3. according to the method described in claim 2, it is characterized in that, the direct current pre-charging device (11) includes being connected in series with
Independent current source, power supply lateral circuit and rectification lateral circuit, the independent current source, power supply lateral circuit and rectification lateral circuit are sequentially connected in series,
The power supply lateral circuit and rectification lateral circuit are coupled by potential device.
4. according to the method described in claim 3, it is characterized in that, the power supply lateral circuit includes the power switch being connected in series with
With potential device primary side.
5. method according to claim 3 or 4, which is characterized in that the rectification lateral circuit includes the transformation being connected in series with
Device pair side, variable resistance and fairing.
6. according to the method described in claim 1, it is characterized in that, being filtered respectively in the net side breaker (1) and the net side
Three-phase on three-phase bus between wave device (3), between the net side filter (3) and the net side AC fuse (4) is female
Cable connection is set on three-phase bus on line and between the pusher side breaker (24) and the pusher side AC fuse (8)
Structure.
7. according to the method described in claim 6, it is characterized in that, the cable connection structure is by being arranged in the three-phase bus
Copper bar on cable mounting hole constitute.
8. the method according to the description of claim 7 is characterized in that described by current transformer breaker (1) and net side filter (3)
Between three-phase bus short circuit the step of include：Short-circuiting copper bar bridging is fixed in the cable mounting hole.
9. the method according to the description of claim 7 is characterized in that the generator by the pusher side AC fuse (8)
The step of side is electrically connected with the net side filter (3) include：The both ends of cable (25) are connected to the net
Cable mounting hole on three-phase bus between side filter (3) and the net side AC fuse (4) and pusher side open circuit
In the cable mounting hole on three-phase bus between device (24) and the pusher side AC fuse (8).
10. according to the method described in claim 1, it is characterized in that, the net side AC fuse (4) is exchanged with the pusher side
Fuse (8) is the fuse with manual removable unloading functions.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110488743A (en) * | 2019-08-30 | 2019-11-22 | 上海电气富士电机电气技术有限公司 | A kind of Wind turbines communication system |
| CN112701717A (en) * | 2019-10-22 | 2021-04-23 | 台达电子企业管理（上海）有限公司 | Wind power converter device |
| CN113507218A (en) * | 2021-08-17 | 2021-10-15 | 阳光电源股份有限公司 | Wind power converter, wind power system and IGBT fault testing method |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101071163A (en) * | 2007-06-29 | 2007-11-14 | 株洲南车时代电气股份有限公司 | Current converter test circuit |
| WO2009092848A2 (en) * | 2008-01-21 | 2009-07-30 | The Switch High Power Converters Oy | Method for monitoring the condition of the capacitors of a dc-voltage intermediate circuit |
| CN201707414U (en) * | 2010-06-24 | 2011-01-12 | 四川吉风电源科技有限公司 | Transducer simulation tester of wind driven generator |
| CN102508073A (en) * | 2011-11-03 | 2012-06-20 | 天津电气传动设计研究所 | Load test device for large-power frequency converter adopting front active end |
| CN102508072A (en) * | 2011-11-03 | 2012-06-20 | 天津电气传动设计研究所 | High-power three-level frequency converter temperature rise and loss testing method employing active front end |
| CN102820771A (en) * | 2012-08-10 | 2012-12-12 | 深圳市禾望电气有限公司 | Soft start device and soft start method of converter equipment |
| CN203025270U (en) * | 2012-12-20 | 2013-06-26 | 珠海万力达电气股份有限公司 | Full-power test device for high-voltage frequency 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 |
| CN103630771A (en) * | 2013-11-06 | 2014-03-12 | 天津瑞能电气有限公司 | Total power testing platform for frequency converter for use in wind power generation |
| CN103728533A (en) * | 2014-01-16 | 2014-04-16 | 北京航空航天大学 | High-power non-contact charging system main circuit fault detection device |
| CN203825115U (en) * | 2014-04-21 | 2014-09-10 | 郭高朋 | Full-power test device of STATCOM sub modules |
| CN204244092U (en) * | 2014-12-24 | 2015-04-01 | 北京天诚同创电气有限公司 | The charge-discharge circuit of DC bus and converter system |
| CN204349788U (en) * | 2015-01-30 | 2015-05-20 | 北京天诚同创电气有限公司 | The pre-charge circuit of DC bus and converter system |
| EP1833153B1 (en) * | 2006-03-07 | 2016-05-04 | Hamilton Sundstrand Corporation | Electric engine start system with active rectifier |
| CN103399228B (en) * | 2013-07-30 | 2016-05-25 | 苏州汇川技术有限公司 | The total power burn in test circuit of current transformer or frequency converter |
| CN105652117A (en) * | 2015-12-29 | 2016-06-08 | 国网智能电网研究院 | DC power grid full-power circulating testing circuit based on DC/DC converter |
| CN105785176A (en) * | 2016-03-11 | 2016-07-20 | 广东明阳龙源电力电子有限公司 | Testing platform for total-power wind-power converter with various specifications |
| CN106199242A (en) * | 2016-06-27 | 2016-12-07 | 湖南中车特种电气装备有限公司 | A kind of traction convertor pilot system and method |
-
2016
- 2016-12-12 CN CN201611142752.7A patent/CN108614168B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1833153B1 (en) * | 2006-03-07 | 2016-05-04 | Hamilton Sundstrand Corporation | Electric engine start system with active rectifier |
| CN101071163A (en) * | 2007-06-29 | 2007-11-14 | 株洲南车时代电气股份有限公司 | Current converter test circuit |
| WO2009092848A2 (en) * | 2008-01-21 | 2009-07-30 | The Switch High Power Converters Oy | Method for monitoring the condition of the capacitors of a dc-voltage intermediate circuit |
| CN201707414U (en) * | 2010-06-24 | 2011-01-12 | 四川吉风电源科技有限公司 | Transducer simulation tester of wind driven generator |
| CN102508073A (en) * | 2011-11-03 | 2012-06-20 | 天津电气传动设计研究所 | Load test device for large-power frequency converter adopting front active end |
| CN102508072A (en) * | 2011-11-03 | 2012-06-20 | 天津电气传动设计研究所 | High-power three-level frequency converter temperature rise and loss testing method employing active front end |
| CN102820771A (en) * | 2012-08-10 | 2012-12-12 | 深圳市禾望电气有限公司 | Soft start device and soft start method of converter equipment |
| CN203025270U (en) * | 2012-12-20 | 2013-06-26 | 珠海万力达电气股份有限公司 | Full-power test device for high-voltage frequency 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 |
| CN103399228B (en) * | 2013-07-30 | 2016-05-25 | 苏州汇川技术有限公司 | The total power burn in test circuit of current transformer or frequency converter |
| CN103630771A (en) * | 2013-11-06 | 2014-03-12 | 天津瑞能电气有限公司 | Total power testing platform for frequency converter for use in wind power generation |
| CN103728533A (en) * | 2014-01-16 | 2014-04-16 | 北京航空航天大学 | High-power non-contact charging system main circuit fault detection device |
| CN203825115U (en) * | 2014-04-21 | 2014-09-10 | 郭高朋 | Full-power test device of STATCOM sub modules |
| CN204244092U (en) * | 2014-12-24 | 2015-04-01 | 北京天诚同创电气有限公司 | The charge-discharge circuit of DC bus and converter system |
| CN204349788U (en) * | 2015-01-30 | 2015-05-20 | 北京天诚同创电气有限公司 | The pre-charge circuit of DC bus and converter system |
| CN105652117A (en) * | 2015-12-29 | 2016-06-08 | 国网智能电网研究院 | DC power grid full-power circulating testing circuit based on DC/DC converter |
| CN105785176A (en) * | 2016-03-11 | 2016-07-20 | 广东明阳龙源电力电子有限公司 | Testing platform for total-power wind-power converter with various specifications |
| CN106199242A (en) * | 2016-06-27 | 2016-12-07 | 湖南中车特种电气装备有限公司 | A kind of traction convertor pilot system and method |
Non-Patent Citations (2)
| Title |
|---|
| WEI QI,HAN DANDAN,YANG HUAZHONG: "Dual-mode low power pipelined ADC with pre-charged switched operational amplifier", 《TSINGHUA SCIENCE AND TECHNOLOGY》 * |
| 郭振江: "风电机组全功率变流器高电压穿越技术研究", <风能> * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110488743A (en) * | 2019-08-30 | 2019-11-22 | 上海电气富士电机电气技术有限公司 | A kind of Wind turbines communication system |
| CN112701717A (en) * | 2019-10-22 | 2021-04-23 | 台达电子企业管理（上海）有限公司 | Wind power converter device |
| CN113507218A (en) * | 2021-08-17 | 2021-10-15 | 阳光电源股份有限公司 | Wind power converter, wind power system and IGBT fault testing method |
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