CN207743697U - Test device applied to active power compensator - Google Patents
Test device applied to active power compensator Download PDFInfo
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- CN207743697U CN207743697U CN201820076084.0U CN201820076084U CN207743697U CN 207743697 U CN207743697 U CN 207743697U CN 201820076084 U CN201820076084 U CN 201820076084U CN 207743697 U CN207743697 U CN 207743697U
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- load
- controller
- active power
- power compensator
- grid
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
The utility model discloses a kind of test devices applied to active power compensator, it includes the harmonic load for accessing power grid, active power compensator is connected on the main line between power grid and harmonic load, harmonic load includes that three-phase commutation bridge, three-phase electric pressure regulator, at least one set of ohmic load circuit and controller, the output end of three-phase electric pressure regulator are connected with the exchange side input terminal of three-phase commutation bridge；The ohmic load circuit is attempted by the DC side of three-phase commutation bridge, and the ohmic load circuit has at least one load resistance and fling-cut switch being cascaded；The controller is connected with the driving end of the stepper motor of the three-phase electric pressure regulator, so that the controller is used to control the action of the stepper motor, the control output end of the controller is connected with the fling-cut switch, and the controller is used to control the action of each fling-cut switch.The utility model realizes the testing requirement of low capacity test device driving high current compensation device full-load run.
Description
Technical field
The utility model is related to a kind of test devices applied to active power compensator.
Background technology
Currently, active power compensator is the major product of power quality controlling, fast response time can be according to actual electric network
In harmonic current variation adjustment compensation output, be the maximum feature for being different from traditional passive LC filters, thus examination it is active
One important indicator of compensation device is exactly its response speed, in order to realize the test to compensation device dynamic compensation ability, just
Need a test device that can freely adjust output variation.
Invention content
Technical problem to be solved in the utility model is to overcome the deficiencies of existing technologies, and is provided a kind of applied to active benefit
The test device for repaying device realizes that the test of the active power compensator full-load run of the test device driving high current of low capacity needs
It asks.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is：It is a kind of applied to active power compensator
Test device, it includes the harmonic load for accessing power grid, and active power compensator is connected to the main line between power grid and harmonic load
On the road, the harmonic load includes：
Three-phase commutation bridge；
Three-phase electric pressure regulator, the output end of three-phase electric pressure regulator are connected with the exchange side input terminal of three-phase commutation bridge；
At least one set of ohmic load circuit, the ohmic load circuit are attempted by the DC side of three-phase commutation bridge, and institute
Stating ohmic load circuit has at least one load resistance and fling-cut switch being cascaded；
Controller, the controller is connected with the driving end of the stepper motor of the three-phase electric pressure regulator, so as to described
Controller is used to control the action of the stepper motor, and the control output end of the controller is connected with the fling-cut switch, institute
State action of the controller for controlling each fling-cut switch.
Further for the positive and negative rotation for preferably controlling stepper motor, it is provided with and is connected in the three-phase electric pressure regulator
Rotating forward directional contactor between power grid and the power input of stepper motor and reversion directional contactor, the control of the controller
Output end processed is connected with rotating forward directional contactor and reversion directional contactor respectively, so that the controller is described just by control
Turn directional contactor and invert the action of directional contactor, to realize the positive and negative rotation of stepper motor.
Further, the ohmic load circuit is provided at least two groups, and at least two groups ohmic load circuit is in that shape in parallel is set
It sets.
Further, the controller is PLC controller.
Further, the test device applied to active power compensator further includes load-side current sampling mutual inductor,
The input terminal of the load-side current sampling mutual inductor is connected on the circuit between three-phase electric pressure regulator and three-phase commutation bridge.
Further, the active power compensator is provided with two sets, respectively the first active power compensator and the second active benefit
Repay device, the output end of the load-side current sampling mutual inductor and the load-side current input terminal phase of the first active power compensator
Even, described on the main line between the load-compensating current output end access power grid and harmonic load of the first active power compensator
The power network compensation current output terminal of second active power compensator is connected with grid-connected circuit, and the grid-connected circuit accesses main line, and
Grid entry point is formed, grid side current sample mutual inductance is connected on the grid side current input terminal of second active power compensator
The input terminal of device, the grid side current sampling mutual inductor is connected on the circuit between power grid and grid entry point.
Above-mentioned technical proposal is used, the utility model has advantageous effect below：
1, the controller of the utility model is used to control the action of the stepper motor of three-phase electric pressure regulator, and then controls three
The voltage of the output end of phase electric voltage regulator, controller control three-phase commutation bridge by the action for controlling each fling-cut switch
DC side and the quantity of ohmic load circuit connect, it is convenient and efficient；
2, the utility model uses the scheme that the first active power compensator and the second active power compensator mutually compensate for, and passes through
Load-side current sampling mutual inductor acquires the electric current of load-side, carries out the compensation electric current of equal proportion amplification and output harmonic wave load,
Grid side current sampling mutual inductor detects and compensates the harmonic current of grid side, filters out the harmonic current that may beat into power grid,
The testing requirement of the active power compensator full-load run of the test device driving high current of low capacity, and low capacity may be implemented
Low energy consumption for test device.
Description of the drawings
Fig. 1 is the harmonic load schematic diagram of the test device applied to active power compensator of the utility model；
Fig. 2 is the controller control principle drawing of the test device applied to active power compensator of the utility model；
Fig. 3 is the first active power compensator and second of the test device applied to active power compensator of the utility model
The schematic diagram that active power compensator mutually compensates for.
Specific implementation mode
In order to make the content of the utility model be easier to be clearly understood, below according to specific embodiment and combine attached
Figure, is described in further detail the utility model.
As shown in Figures 1 to 3, a kind of test device applied to active power compensator, it include access power grid 1 harmonic wave it is negative
2 are carried, active power compensator is connected on the main line between power grid 1 and harmonic load 2, and the harmonic load 2 includes：
Three-phase commutation bridge 3；
Three-phase electric pressure regulator 4, the output end of three-phase electric pressure regulator 4 and the exchange side input terminal phase of three-phase commutation bridge 3
Even；
At least one set of ohmic load circuit 5, the ohmic load circuit are attempted by the DC side of three-phase commutation bridge 3, and
The ohmic load circuit has at least one load resistance 5-1 being cascaded and fling-cut switch 5-2；
Controller 6, the controller 6 is connected with the driving end of the stepper motor of the three-phase electric pressure regulator 4, with toilet
State action of the controller 6 for controlling the stepper motor, the control output end of the controller 6 and the fling-cut switch 5-2
It is connected, the controller 6 is used to control the action of each fling-cut switch 5-2.
As shown in Fig. 2, being provided with rotating forward commutation contact on the driving circuit of the stepper motor of the three-phase electric pressure regulator 4
Device 7-1 and reversion directional contactor 7-2, the control output end of the controller 6 respectively with rotate forward directional contactor 7-1 and reversion
Directional contactor 7-2 is connected, so that the controller 6 is by controlling the rotating forward directional contactor 7-1 and reversion commutation contact
The action of device 7-2, to control the positive and negative rotation of stepper motor.
As shown in Figure 1, the ohmic load circuit 5 is provided at least two groups, at least two groups ohmic load circuit 5 is in parallel connection
Shape is arranged.
As shown in Fig. 2, the controller 6 is PLC controller；For that can realize that test device generates the size of harmonic current
Variation and rate of transformation, the present apparatus are controlled using PLC controller, can by the high-speed pulse output function of PLC controller
With the PT0 pulses that PWM (pulsewidth modulation) pulses or output frequency that generate high speed on specific output point can be changed, to control
The position control of stepper motor and speed governing utilize PLC to adjust the voltage up-down and lifting speed of three-phase commutation bridge exchange side
The Timer Controlling relay delivery outlet of controller, change three phase rectifying bridge DC side input ohmic load circuit 5 number,
Change curve is exported to formulate test device harmonic current using the high-speed pulse output and Timer Controlling of PLC controller,
To be applicable in and the testing requirement of compensation device.
As shown in Figure 1, the test device applied to active power compensator, further includes load-side current sample mutual inductance
The input terminal of device 8, the load-side current sampling mutual inductor 8 is connected between three-phase electric pressure regulator 4 and three-phase commutation bridge 3
On circuit.
As shown in figure 3, the active power compensator is provided with two sets, respectively the first active power compensator 9-1 and second
Active power compensator 9-2, the load of the output end of the load-side current sampling mutual inductor 8 and the first active power compensator 9-1
Side current input terminal is connected, the load-compensating current output end access power grid 1 and harmonic load 2 of the first active power compensator 9-1
Between main line on, the power network compensation current output terminal of the second active power compensator 9-2 is connected with grid-connected circuit 10, institute
It states grid-connected circuit 10 and accesses main line 11, and form grid entry point 12, the 1 side electric current of power grid of the second active power compensator 9-2
Grid side current sampling mutual inductor 13 is connected on input terminal, the input terminal of the grid side current sampling mutual inductor 13 is connected to
On circuit between power grid 1 and grid entry point 12.
The operation principle of the utility model is as follows：
The controller 6 of the utility model controls the action of the stepper motor of three-phase electric pressure regulator 4, and then controls three-phase electricity
The voltage of the ac output end of dynamic pressure regulator 4, it is whole that controller 6 controls three-phase by controlling the action of each fling-cut switch 5-2
The quantity of ohmic load circuit 5 for flowing the DC side of bridge 3 and connecing, it is easy to operate；The utility model uses the first active benefit
The scheme that device 9-1 and the second active power compensator 9-2 are mutually compensated for is repaid, is acquired by load-side current sampling mutual inductor 8 negative
The electric current of side is carried, the compensation electric current of equal proportion amplification and output harmonic wave load is carried out, grid side current sampling mutual inductor 13 detects
And the harmonic current of grid side is compensated, the harmonic current that may beat into power grid 1 is filtered out, the test device of low capacity may be implemented
The testing requirement of the active power compensator full-load run of high current is driven, and low energy consumption for the test device of low capacity.
Particular embodiments described above, the technical issues of the utility model is solved, technical solution and advantageous effect into
It has gone further description, it should be understood that the foregoing is merely specific embodiment of the utility model, and has not had to
In limitation the utility model, within the spirit and principle of the utility model, any modification, equivalent substitution and improvements done
Deng should be included within the scope of protection of this utility model.
Claims (6)
1. a kind of test device applied to active power compensator, it includes the harmonic load (2) of access power grid (1), active benefit
It repays on the main line that device is connected between power grid (1) and harmonic load (2), it is characterised in that：Harmonic load (2) packet
It includes：
Three-phase commutation bridge (3)；
Three-phase electric pressure regulator (4), the exchange side input terminal of the output end and three-phase commutation bridge (3) of three-phase electric pressure regulator (4)
It is connected；
At least one set of ohmic load circuit (5), the ohmic load circuit are attempted by the DC side of three-phase commutation bridge (3), and
The ohmic load circuit has at least one load resistance (5-1) being cascaded and fling-cut switch (5-2)；
Controller (6), the controller (6) are connected with the driving end of the stepper motor of the three-phase electric pressure regulator (4), so as to
The controller (6) is used to control the action of the stepper motor, and the control output end of the controller (6) is opened with the switching
It closes (5-2) to be connected, the controller (6) is used to control the action of each fling-cut switch (5-2).
2. the test device according to claim 1 applied to active power compensator, it is characterised in that：The three-phase electric
It is provided on the driving circuit of the stepper motor of pressure regulator (4) and rotates forward directional contactor (7-1) and reversion directional contactor (7-
2), the control output end of the controller (6) respectively with rotate forward directional contactor (7-1) and invert directional contactor (7-2) phase
Even, so that the controller (6) is by controlling the rotating forward directional contactor (7-1) and inverting the dynamic of directional contactor (7-2)
Make, to control the positive and negative rotation of stepper motor.
3. the test device according to claim 1 applied to active power compensator, it is characterised in that：The ohmic load
Circuit (5) is provided at least two groups, and at least two groups ohmic load circuit (5) is in that shape in parallel is arranged.
4. the test device according to claim 1 applied to active power compensator, it is characterised in that：The controller
(6) it is PLC controller.
5. the test device according to claim 1 applied to active power compensator, it is characterised in that：It further include load-side
The input terminal of current sampling mutual inductor (8), the load-side current sampling mutual inductor (8) is connected to three-phase electric pressure regulator (4)
On circuit between three-phase commutation bridge (3).
6. the test device according to claim 5 applied to active power compensator, it is characterised in that：The active compensation
Device is provided with two sets, respectively the first active power compensator (9-1) and the second active power compensator (9-2), the load-side
The output end of current sampling mutual inductor (8) is connected with the load-side current input terminal of the first active power compensator (9-1), and first has
On main line between the load-compensating current output end access power grid (1) and harmonic load (2) of source compensation device (9-1), institute
The power network compensation current output terminal for stating the second active power compensator (9-2) is connected with grid-connected circuit (10), the grid-connected circuit
(10) access main line (11), and grid entry point (12) is formed, the grid side electric current input of second active power compensator (9-2)
Grid side current sampling mutual inductor (13) is connected on end, the input terminal of the grid side current sampling mutual inductor (13) is connected to
On circuit between power grid (1) and grid entry point (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820076084.0U CN207743697U (en) | 2018-01-17 | 2018-01-17 | Test device applied to active power compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820076084.0U CN207743697U (en) | 2018-01-17 | 2018-01-17 | Test device applied to active power compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207743697U true CN207743697U (en) | 2018-08-17 |
Family
ID=63121917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820076084.0U Active CN207743697U (en) | 2018-01-17 | 2018-01-17 | Test device applied to active power compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207743697U (en) |
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2018
- 2018-01-17 CN CN201820076084.0U patent/CN207743697U/en active Active
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