CN105954610B - A kind of (PCC) power power examination test system - Google Patents
A kind of (PCC) power power examination test system Download PDFInfo
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- CN105954610B CN105954610B CN201610266292.2A CN201610266292A CN105954610B CN 105954610 B CN105954610 B CN 105954610B CN 201610266292 A CN201610266292 A CN 201610266292A CN 105954610 B CN105954610 B CN 105954610B
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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
This application discloses a kind of (PCC) power power examination test systems, including power supply module, (PCC) power to be measured and load blocks；Wherein, the power supply module includes voltage transformation unit, the first rectifier, the second rectifier, the first functional unit, the second functional unit and the first change-over switch；The load blocks include the first load, the second load and third load；The pilot system can adjust the series-parallel relationship of first rectifier and the second rectifier by first change-over switch to meet requirement of the power examination test of different type (PCC) power to be measured for power supply；And the pilot system can adjust the connection relationship of the first load, the second load and third load in the load blocks by second change-over switch to meet requirement of the power examination test of different type (PCC) power to be measured for load.
Description
Technical field
This application involves technical field of circuit design, more specifically to a kind of (PCC) power power examination test system
System.
Background technique
(PCC) power refer to be integrated with insulated gate bipolar transistor (Insulated Gate Bipolar Transistor,
) or integrated gate commutated thyristor (Integrated Gate Commutated Thyristors, IGCT) derailing switch IGBT
The device of part, DC support capacitor and low-inductance bus etc. is the core devices in various current transformers, now the (PCC) power of mainstream
It mainly include IGBT three phase power component and the single-phase three level powers component of IGCT.The (PCC) power before being delivered for use all
It needs to carry out power examination test to it, to verify its reliability.
The (PCC) power power examination test system used in the prior art is as shown in Figure 1, mainly include main circuit breaker
QX1, power supply module 11, subject module MX and load blocks 12；Wherein, subject module MX is the unsteady flow comprising (PCC) power to be measured
Device；The power supply module 11 includes pressure regulator TX1, transformer TX2, rectifier Z, the first normally opened contact KX1, the second normally opened contact
KX2, third normally opened contact KX3, first resistor RX1, second resistance RX2,3rd resistor RX3, first voltage sensor VX1,
Two voltage sensor VX2 and the first current sensor LX1；The load blocks 12 include three-phase ac contactor KX4, first negative
LX1, the second load LX2, third load LX3, the second current sensor LX2, third current sensor LX3, the 4th electric current is carried to pass
Sensor LX4, tertiary voltage sensor VX3, the 4th voltage sensor VX4 and the 5th voltage sensor VX5；The pilot system is logical
Pressure regulator TX1 and transformer TX2 are crossed to input rectifier Z after the alternating voltage progress voltage conversion of input, makes the rectifier Z
Direct current 50-4000V voltage can be exported, to provide test power supply for the subject module MX；In the power supply module 11
KX1, KX2, KX3, RX1 and RX2 composition function module, by passing through in the corresponding input coil of control KX1, KX2 and KX3
Electric current realize it is electrically operated to the charge and discharge of the DC support capacitor in the (PCC) power to be measured, to guarantee DC support electricity
The normal function of appearance.It, can be by disconnecting main circuit breaker QX1 in the case that the test process of the (PCC) power breaks down
Realize the isolation between fault loop and AC power source.
But the voltage range for the test power supply that the pilot system can provide for the subject module MX is limited, is not enough to
Meet the power examination test requirement of high-voltage power component (such as the single-phase three level powers component of IGCT).
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of (PCC) power power examination test systems, to meet height
Press the power examination test requirement of (PCC) power.
To realize the above-mentioned technical purpose, the embodiment of the invention provides following technical solutions：
A kind of (PCC) power power examination test system, including power supply module, (PCC) power to be measured and load blocks；Its
In,
The power supply module includes voltage transformation unit, the first rectifier, the second rectifier, the first functional unit, the second function
Unit and the first change-over switch；Wherein, the input terminal of the voltage transformation unit is as ac voltage input, output end and described the
The connection of the voltage input end of the voltage input end of one rectifier and the second rectifier；The voltage output end of first rectifier with
The input terminal of first functional unit connects, and the voltage output end of second rectifier is defeated with second functional unit
Enter end connection；
First output end of the first end of first change-over switch and first functional unit and described to power scale
The first input end of component connects, and second end is connect with the second output terminal of first functional unit, third end with it is described to
Second input terminal of power scale component connects, and the 4th end is connect with the first output end of second functional unit, the 5th end and
The third input terminal of the second output terminal of second functional unit and the (PCC) power to be measured connection, for controlling described the
One rectifier and the second rectifier are serial or parallel connection；
The load blocks include that third functional unit, the first load, the second load, third load and the second conversion are opened
It closes；Wherein, the first input end of the third functional unit is connect with the first output end of the (PCC) power to be measured, and second is defeated
Enter end to connect with the second output terminal of the (PCC) power to be measured, the third of third input terminal and the (PCC) power to be measured exports
End connection；
One end of first load is connect with the first output end of the third functional unit, the other end and described second
The first end of change-over switch connects；One end of second load simultaneously with the third end of second change-over switch and described the
The second output terminal of three functional units connects, and the other end is loaded with the second end of second change-over switch and the third simultaneously
One end connection；The third load connects far from the third output end of described second load one end and the third functional unit
It connects；
Second change-over switch is used to control the connection relationship of first load, the second load and third load.
Preferably, first change-over switch includes first switch and the second switch, the first switch include main contacts,
First contact and the second contact；Wherein,
The main contacts is the third end of first change-over switch, and first contact is first change-over switch
First end, second contact are the second end of first change-over switch；One end of the second switch is as described first
4th end of change-over switch, fiveth end of the other end as first change-over switch；
When the main contacts is connect with first contact, the second switch closure, first rectifier and second
Rectifier is to be connected in parallel；When the main contacts is connect with second contact, the second switch is disconnected, first rectification
Device and second rectifier are to be connected in series.
Preferably, the pilot system further includes switch, and an end of the switch is connected to the of first change-over switch
On the connecting line of second input terminal of three ends and the (PCC) power to be measured, other end ground connection.
Preferably, the connection relationship of first load, the second load and third load includes series connection and star-like company
It connects.
Preferably, second change-over switch includes the second main contacts, third contact and the 4th contact；Wherein,
First end of second main contacts as second change-over switch, the third contact are second conversion
The third end of switch, the 4th contact are the second end of second change-over switch；
When second main contacts is connect with the third contact, first load, the second load and third load
To be connected in series；When second main contacts is connect with the 4th contact, first load, the second load and third are negative
Carrying is star-like connection.
Preferably, the pilot system further includes breaker；
One end of the breaker is as the ac voltage input, the input terminal company of the other end and the voltage transformation unit
It connects.
Preferably, the voltage transformation unit includes pressure regulator and transformer；
The pressure regulator and the transformer series, the pressure regulator is far from described transformer one end as the transformation list
The input terminal of member, output end of the transformer far from described pressure regulator one end as the voltage transformation unit.
Preferably, first functional unit includes the first normally opened contact, first resistor, second resistance, the first electric current biography
Sensor and first voltage sensor；Wherein,
First normally opened contact is in parallel with the second resistance after concatenating with the first resistor, the second resistance
A pole of the one end as the first functional unit input terminal, the other end are another as the first functional unit input terminal
Pole；
One end of first current sensor is connected to one end of the second resistance, and the other end and the first voltage pass
One end of sensor is connected to the first output end of first functional unit；
The first voltage sensor is far from first current sensor one end and the second resistance far from described the
The connection of one current sensor one end, the second output terminal as first functional unit.
Preferably, second functional unit includes the second normally opened contact, 3rd resistor, the 4th resistance, the second electric current biography
Sensor and second voltage sensor；Wherein,
Second normally opened contact concatenated with the 3rd resistor after with the 4th resistor coupled in parallel, the 4th resistance
A pole of the one end as the second functional unit input terminal, the other end are another as the second functional unit input terminal
Pole；
One end of second current sensor is connected to one end of the 4th resistance, and the other end and the second voltage pass
One end of sensor is connected to the first output end of second functional unit；
The second voltage sensor is far from second current sensor one end and the 4th resistance far from described the
The connection of two current sensor one end, the second output terminal as second functional unit.
Preferably, the third functional unit includes：Three-phase ac contactor, third current sensor, the 4th electric current pass
Sensor, the 5th current sensor, tertiary voltage sensor, the 4th voltage sensor and the 5th voltage sensor；Wherein,
Three contacts of the three-phase ac contactor are connected to first load and the (PCC) power to be measured respectively
Between first output end, between second load and the second output terminal of the (PCC) power to be measured and the third is loaded
Between the third output end of the (PCC) power to be measured；
The third current sensor is connected between the first output end of the (PCC) power to be measured and first load；
4th current sensor is connected between the second output terminal of the (PCC) power to be measured and second load；
5th current sensor is connected between the third output end of the (PCC) power to be measured and third load；
One end of the tertiary voltage sensor is connected to the first output of first load with the (PCC) power to be measured
On the connecting line at end, on the connecting line of another second output terminal for being terminated at second load and the (PCC) power to be measured；
One end of the 4th voltage sensor is connected to the second output of second load with the (PCC) power to be measured
On the connecting line at end, on the connecting line of another third output end for being terminated at the third load and the (PCC) power to be measured；
One end of the 5th voltage sensor is connected to the first output of first load with the (PCC) power to be measured
On the connecting line at end, on the connecting line of another third output end for being terminated at the third load and the (PCC) power to be measured.
It can be seen from the above technical proposal that the embodiment of the invention provides a kind of (PCC) power power examination test systems
System can be opened when the type of the (PCC) power to be measured is IGBT (PCC) power by the first conversion of the pilot system
Close control first rectifier with the connection relationship of the second rectifier be it is in parallel, it is electric greatly with the input for meeting IGBT (PCC) power
Stream requires, and controls the connection relationship of first load, the second load and third load by the second change-over switch to expire
Requirement of the sufficient IGBT (PCC) power for load；When the type of the (PCC) power to be measured is the high-voltage powers such as IGCT (PCC) power
When component, can control first rectifier with the second rectifier by the first change-over switch of the pilot system is to connect
Connection relationship to meet the high input voltage requirement of the high pressures (PCC) power such as IGCT (PCC) power, and passes through described second turn
The connection relationship of the first load, the second load and third load described in switch control is changed to meet IGCT (PCC) power for load
Requirement.
By above-mentioned analysis it can be found that the pilot system can convert described first by first change-over switch
Connection relationship between rectifier and the second rectifier converts first load, second negative by second change-over switch
The connection relationship between third load is carried, power examination test is wanted to meet different types of (PCC) power to be measured
It asks.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the electrical block diagram of (PCC) power power examination test system in the prior art；
Fig. 2 is that a kind of circuit structure for (PCC) power power examination test system that one embodiment of the application provides shows
It is intended to；
Fig. 3 is a kind of circuit structure for (PCC) power power examination test system that another embodiment of the application provides
Schematic diagram；
Fig. 4 is a kind of circuit structure for (PCC) power power examination test system that another embodiment of the application provides
Schematic diagram；
Fig. 5 is a kind of circuit structure for (PCC) power power examination test system that the further embodiment of the application provides
Schematic diagram；
Fig. 6 is a kind of circuit knot for (PCC) power power examination test system that the specific embodiment of the application provides
Structure schematic diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the present application provides a kind of (PCC) power power examination test system, as shown in Fig. 2, including power supply module
100, (PCC) power M to be measured and load blocks 200；Wherein,
The power supply module 100 includes voltage transformation unit T, the first rectifier Z1, the second rectifier Z2, the first functional unit
A1, the second functional unit A2 and the first change-over switch CT1；Wherein, the input terminal of the voltage transformation unit T is inputted as alternating voltage
End, output end are connect with the voltage input end of the voltage input end of the first rectifier Z1 and the second rectifier Z2；Described
The voltage output end of one rectifier Z1 is connect with the input terminal of the first functional unit A1, the voltage of the second rectifier Z2
Output end is connect with the input terminal of the second functional unit A2；
The first output end of the first end of the first change-over switch CT1 and the first functional unit A1 and described to be measured
The first input end of (PCC) power M connects, and second end is connect with the second output terminal of the first functional unit A1, third end and
The second input terminal of the (PCC) power M to be measured connects, and the 4th end is connect with the first output end of the second functional unit A2,
5th end is connect with the third input terminal of the second output terminal of the second functional unit A2 and the (PCC) power M to be measured, is used
It is serial or parallel connection in controlling the first rectifier Z1 and the second rectifier Z2；
The load blocks 200 include third functional unit A3, first load L1, second load L2, third load L3 and
Second change-over switch CT2；Wherein, the first input end of the third functional unit A3 and the first of the (PCC) power M to be measured
Output end connection, the second input terminal connect with the second output terminal of the (PCC) power M to be measured, third input terminal with it is described to be measured
The third output end of (PCC) power M connects；
It is described first load L1 one end connect with the first output end of the third functional unit A3, the other end with it is described
The first end of second change-over switch CT2 connects；One end of the second load L2 simultaneously with the second change-over switch CT2 the
The connection of the second output terminal of three ends and the third functional unit A3, the other end simultaneously with the second change-over switch CT2 the
One end connection of two ends and third load L3；The third load L3 is far from described second load one end L2 and the third
The third output end of functional unit A3 connects；
The second change-over switch CT2 is used to control the company of the first load L1, the second load L2 and third load L3
Connect relationship.
It should be noted that the (PCC) power type of mainstream includes IGBT three phase power component and the single-phase three level function of IGCT
Rate component, requirement of the IGBT three phase power component when carrying out power examination test for input voltage are generally 3000V
Within, therefore when the (PCC) power M to be measured is IGBT three phase power component, it is opened by the first conversion of the pilot system
Close CT1 control the first rectifier Z1 and the connection relationship of the second rectifier Z2 be it is in parallel, pass through the adjusting voltage transformation unit T
So that the voltage exported after the first rectifier Z1 and the second rectifier Z2 are in parallel is within 3000V, and by described in adjusting
Second change-over switch CT2 makes the connection relationship of the first load L1, the second load L2 and third load L3 meet IGBT three-phase
The load requirement of (PCC) power；The single-phase three level powers component of IGCT is when carrying out power examination test for input voltage
Requirement be generally within 6000V, therefore when the (PCC) power M to be measured is the single-phase three level powers component of IGCT, pass through
The first change-over switch CT1 controls the connection relationship of the first rectifier Z1 and the second rectifier Z2 as series connection, passes through tune
Save the electricity that can be exported within 6000V after the voltage transformation unit T makes the first rectifier Z1 and the second rectifier Z2 connect
Pressure, and by adjusting the second change-over switch CT2, make the company of the first load L1, the second load L2 and third load L3
The relationship of connecing meets the load requirement of the single-phase three level powers component of IGCT.
Therefore described in the pilot system provided by the embodiments of the present application can be realized by the first change-over switch CT1
The series-parallel conversion of first rectifier Z1 and the second rectifier Z2 are examined with meeting the power of different types of (PCC) power M to be measured
Nuclear test requires；And the flexible conversion that load connection relationship can be realized by the second change-over switch CT2, does not need to survey
Examination personnel carry out the wiring conversion operation of the big line of cable, save the testing time, improve the efficiency of power examination test.
Further, the pilot system can carry out power examination test to individually (PCC) power M to be measured, without
Power examination test is carried out again after (PCC) power M to be measured is assembled with corresponding current transformer, increases the test
The flexibility of system.
It should also be noted that, in one embodiment of the application, the first functional unit A1 and the second function list
First A2 grasps the charge and discharge of the DC support capacitor in the (PCC) power M to be measured for realizing during power examination test
Make；But in another embodiment of the application, the first functional unit A1 and the second functional unit A2 are only used for realizing
To the discharge operation of the DC support capacitor in the (PCC) power M to be measured during power examination test, in this embodiment,
By adding the realization of AC charging component to the charging operations of the DC support capacitor in the (PCC) power M to be measured.The application
To this and without limitation, specifically depending on actual conditions.In addition the first functional unit A1 and the second functional unit A2 also have
There is the function of electric current and voltage in observation circuit, can be realized by current sensor or voltage sensor.
The on-off control and the monitoring of electric current, voltage of load blocks 200 may be implemented in the third functional unit A3.It is right
The on-off control of the load blocks 200 can be realized by contactor；Likewise, can be with to the monitoring of the electric current, voltage
It is realized by current sensor or voltage sensor.The application to this and without limitation, specifically depending on actual conditions.
On the basis of the above embodiments, the application another embodiment provide one kind first change-over switch CT1 with
The specific implementation form of second change-over switch CT2, as shown in figure 3, the first change-over switch CT1 include first switch QS1 and
Second switch QS2, the first switch QS1 include main contacts, the first contact and the second contact；Wherein,
The main contacts is the third end of the first change-over switch CT1, and first contact is that first conversion is opened
The first end of CT1 is closed, second contact is the second end of the first change-over switch CT1；One end of the second switch QS2
As the 4th end of the first change-over switch CT1, fiveth end of the other end as the first change-over switch CT1；
When the main contacts is connect with first contact, second switch QS2 closure, the first rectifier Z1 with
Second rectifier Z2 is to be connected in parallel；When the main contacts is connect with second contact, the second switch QS2 is disconnected, institute
The first rectifier Z1 and the second rectifier Z2 are stated to be connected in series.
The second change-over switch CT2 includes the second main contacts, third contact and the 4th contact；Wherein,
First end of second main contacts as the second change-over switch CT2, the third contact are described second
The third end of change-over switch CT2, the 4th contact are the second end of the second change-over switch CT2；
When second main contacts is connect with the third contact, the first load L1, the second load L2 and third
Loading L3 is to be connected in series；When second main contacts is connect with the 4th contact, the first load L1, the second load
L2 and third load L3 is star-like connection.
It should be noted that in the present embodiment, the connection of the first load L1, the second load L2 and third load L3
Relationship includes series connection and star-like connection.
On the basis of the above embodiments, in another embodiment of the application, as shown in figure 4, the pilot system
Further include switch K, an end of the switch K be connected to the first change-over switch CT1 third end and the (PCC) power M to be measured
The second input terminal connecting line on, the other end ground connection.
It should be noted that in the present embodiment, when the (PCC) power M to be measured is the single-phase three level powers component of IGCT
When, since the voltage inputted to the single-phase three level powers component of IGCT needs up to 6000V, the switch K can be closed at this time
It closes so that the current potential of neutral potential is zero, so that the voltage class of the pilot system reduces, avoids the test
System is in high voltage state for a long time.
On the basis of the above embodiments, in the further embodiment of the application, as shown in figure 5, the pilot system
It further include circuit breaker Q F1；
One end of the circuit breaker Q F1 is as the ac voltage input, the input of the other end and the voltage transformation unit T
End connection.
It should be noted that when the (PCC) power M to be measured breaks down or a certain during power examination test
When branch breaks down, the power supply inputted to the pilot system can be disconnected by disconnecting the circuit breaker Q F1, realize failure
The quick separating in circuit and power supply.
On the basis of the above embodiments, the specific embodiment of the application provides a kind of voltage transformation unit T,
The specific implementation form of one functional unit A1, the second functional unit A2 and third functional unit A3, as shown in fig. 6, the transformation
Unit T includes pressure regulator T1 and transformer T2；
The pressure regulator T1 connects with the transformer T2, and the pressure regulator T1 is far from the one end the transformer T2 as institute
State the input terminal of voltage transformation unit T, output of the transformer T2 far from the one end the pressure regulator T1 as the voltage transformation unit T
End.
The first functional unit A1 includes the first normally opened contact KS1, first resistor R1, second resistance R2, the first electric current
Sensor LH1 and first voltage sensor VH1；Wherein,
The first normally opened contact KS1 is in parallel with the second resistance R2 after concatenating with the first resistor R1, and described
A pole of the one end of two resistance R2 as the first functional unit A1 input terminal, the other end is as the first functional unit A1
Another pole of input terminal；
An end of the first current sensor LH1 is connected to one end of the second resistance R2, the other end and described first
One end of voltage sensor VH1 is connected to the first output end of the first functional unit A1；
The first voltage sensor VH1 is remote with the second resistance R2 far from described one end first current sensor LH1
It is connected from described one end first current sensor LH1, the second output terminal as the first functional unit A1.
The second functional unit A2 includes the second normally opened contact KS2,3rd resistor R3, the 4th resistance R4, the second electric current
Sensor LH2 and second voltage sensor VH2；Wherein,
The second normally opened contact KS2 is in parallel with the 4th resistance R4 after concatenating with the 3rd resistor R3, and described
A pole of the one end of four resistance R4 as the second functional unit A2 input terminal, the other end is as the second functional unit A2
Another pole of input terminal；
An end of the second current sensor LH2 is connected to one end of the 4th resistance R4, the other end and described second
One end of voltage sensor VH2 is connected to the first output end of the second functional unit A2；
The second voltage sensor VH2 is remote with the 4th resistance R4 far from described one end second current sensor LH2
It is connected from described one end second current sensor LH2, the second output terminal as the second functional unit A2.
The third functional unit A3 includes：Three-phase ac contactor KS3, third current sensor LH3, the 4th electric current pass
Sensor LH4, the 5th current sensor LH5, tertiary voltage sensor VH3, the 4th voltage sensor VH4 and the 5th voltage sensor
VH5；Wherein,
Three contacts of the three-phase ac contactor KS3 are connected to the first load L1 and the power packages to be measured respectively
It is between the second load L2 and the second output terminal of the (PCC) power M to be measured and described between the first output end of part M
Third loads between L3 and the third output end of the (PCC) power M to be measured；
The third current sensor LH3 is connected to the first output end of the (PCC) power M to be measured and described first and loads
Between L1；
The 4th current sensor LH4 is connected to the second output terminal and second load of the (PCC) power M to be measured
Between L2；
The 5th current sensor LH5 is connected to the third output end of the (PCC) power M to be measured and the third loads
Between L3；
An end of the tertiary voltage sensor VH3 is connected to the of the first load L1 and (PCC) power M to be measured
On the connecting line of one output end, another second output terminal for being terminated at the second load L2 and (PCC) power M to be measured
On connecting line；
An end of the 4th voltage sensor VH4 is connected to the of the second load L2 and (PCC) power M to be measured
On the connecting line of two output ends, another third output end for being terminated at the third load L3 and (PCC) power M to be measured
On connecting line；
An end of the 5th voltage sensor VH5 is connected to the of the first load L1 and (PCC) power M to be measured
On the connecting line of one output end, another third output end for being terminated at the third load L3 and (PCC) power M to be measured
On connecting line.
It should be noted that can be by adjusting described in pressure regulator T1 and transformer T2 realization in the voltage transformation unit T
The output voltage of power supply module 100 is continuously adjusted.
The present embodiment provides only the possible voltage transformation unit T of one kind, the first functional unit A1, the second functional unit A2
With the way of realization of third functional unit A3, in the present embodiment, the first functional unit A1, the second functional unit A2 are only capable of
Enough discharge operations realized to the DC support capacitor in the (PCC) power M to be measured；Charging assembly of increasing exchanges can be passed through
(can be made of two charging three-phase contactors and three charging resistors) realizes the charging operations to the DC support capacitor；
It can also be by increasing charging into the first functional unit A1, the second functional unit A2 in the other embodiments of the application
The normally opened contact and charging resistor of contactor realize the charging operations to the DC support capacitor.The application does not do this
It limits, specifically depending on actual conditions.And it can also be by the first functional unit A1, the second functional unit A2 and
Increase and decrease a number of current sensor in three functional unit A3 or voltage sensor is realized to different node currents and voltage
Monitoring, the application to this also without limitation, specifically depending on actual conditions.
In conclusion the embodiment of the present application provides a kind of (PCC) power power examination test system, when described to measurement of power
When the type of rate component M is IGBT (PCC) power, institute can be controlled by the first change-over switch CT1 of the pilot system at this time
State the first rectifier Z1 and the connection relationship of the second rectifier Z2 be it is in parallel, wanted with meeting the input high current of IGBT (PCC) power
It asks, and the connection relationship that the first load L1, the second load L2 and third load L3 is controlled by the second change-over switch CT2
To meet requirement of the IGBT (PCC) power for load；When the type of the (PCC) power M to be measured is that IGCT (PCC) power is contour
When pressing (PCC) power, can be controlled at this time by the first change-over switch CT1 of the pilot system the first rectifier Z1 with
Second rectifier Z2 is series connection relationship, to meet the high input voltage requirement of the high pressures (PCC) power such as IGCT (PCC) power,
And the connection pass that the first load L1, the second load L2 and third load L3 is controlled by the second change-over switch CT2
System is to meet requirement of the IGCT (PCC) power for load.
By above-mentioned analysis it can be found that the pilot system can be by described in the first change-over switch CT1 conversion
Connection relationship between first rectifier Z1 and the second rectifier Z2 passes through the second change-over switch CT2 conversion described first
The connection relationship between L1, the second load L2 and third load L3 is loaded, to meet different types of M pairs of (PCC) power to be measured
In the requirement of power examination test.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of (PCC) power power examination test system, which is characterized in that including power supply module, (PCC) power to be measured and load
Module；Wherein,
The power supply module includes voltage transformation unit, the first rectifier, the second rectifier, the first functional unit, the second functional unit
And first change-over switch；Wherein, the input terminal of the voltage transformation unit is as ac voltage input, output end and described first whole
Flow the voltage input end connection of the voltage input end and the second rectifier of device；The voltage output end of first rectifier with it is described
The input terminal of first functional unit connects, the input terminal of the voltage output end of second rectifier and second functional unit
Connection；
The first output end and the (PCC) power to be measured of the first end of first change-over switch and first functional unit
First input end connection, second end connect with the second output terminal of first functional unit, third end with it is described to measurement of power
Second input terminal of rate component connects, and the 4th end is connect with the first output end of second functional unit, the 5th end with it is described
The connection of the third input terminal of the second output terminal of second functional unit and the (PCC) power to be measured, it is whole for controlling described first
It flows device and the second rectifier is serial or parallel connection；
The load blocks include third functional unit, the first load, the second load, third load and the second change-over switch；Its
In, the first input end of the third functional unit is connect with the first output end of the (PCC) power to be measured, the second input terminal
It is connect with the second output terminal of the (PCC) power to be measured, the third output end of third input terminal and the (PCC) power to be measured connects
It connects；
One end of first load is connect with the first output end of the third functional unit, the other end and second conversion
The first end of switch connects；One end of second load third end with second change-over switch and the third function simultaneously
Can unit second output terminal connection, the other end loaded simultaneously with the second end of second change-over switch and the third one
End connection；The third load is connect far from second load one end with the third output end of the third functional unit；
Second change-over switch is used to control the connection relationship of first load, the second load and third load；
First functional unit and the second functional unit for realizing during power examination test to described to power scale
The charge and discharge of DC support capacitor in component is electrically operated；
The third functional unit A3 controls for realizing the on-off of load blocks and the monitoring of electric current, voltage；
The pilot system converts the connection between first rectifier and the second rectifier by first change-over switch
Relationship converts the connection relationship between first load, the second load and third load by second change-over switch, with
Meet requirement of different types of (PCC) power to be measured for power examination test.
2. (PCC) power power examination test system according to claim 1, which is characterized in that first change-over switch
Including first switch and the second switch, the first switch includes main contacts, the first contact and the second contact；Wherein,
The main contacts is the third end of first change-over switch, and first contact is the first of first change-over switch
End, second contact are the second end of first change-over switch；One end of the second switch is as first conversion
4th end of switch, fiveth end of the other end as first change-over switch；
When the main contacts is connect with first contact, the second switch closure, first rectifier and second is rectified
Device is to be connected in parallel；When the main contacts is connect with second contact, the second switch is disconnected, first rectifier with
Second rectifier is to be connected in series.
3. (PCC) power power examination test system according to claim 2, which is characterized in that the pilot system is also wrapped
Switch is included, an end of the switch is connected to the third end of first change-over switch and the second input of the (PCC) power to be measured
On the connecting line at end, other end ground connection.
4. (PCC) power power examination test system according to claim 1, which is characterized in that first load, the
The connection relationship of two loads and third load includes series connection and star-like connection.
5. (PCC) power power examination test system according to claim 4, which is characterized in that second change-over switch
Including the second main contacts, third contact and the 4th contact；Wherein,
First end of second main contacts as second change-over switch, the third contact are second change-over switch
Third end, the 4th contact be second change-over switch second end；
When second main contacts is connect with the third contact, first load, the second load and third load are string
Connection connection；When second main contacts is connect with the 4th contact, first load, the second load and third load are
Star-like connection.
6. (PCC) power power examination test system according to claim 1, which is characterized in that the pilot system is also wrapped
Include breaker；
One end of the breaker is connect as the ac voltage input, the other end with the input terminal of the voltage transformation unit.
7. (PCC) power power examination test system according to claim 1, which is characterized in that the voltage transformation unit includes
Pressure regulator and transformer；
The pressure regulator and the transformer series, the pressure regulator is far from described transformer one end as the voltage transformation unit
Input terminal, output end of the transformer far from described pressure regulator one end as the voltage transformation unit.
8. (PCC) power power examination test system according to claim 1, which is characterized in that first functional unit
Including the first normally opened contact, first resistor, second resistance, the first current sensor and first voltage sensor；Wherein,
First normally opened contact is in parallel with the second resistance after concatenating with the first resistor, one end of the second resistance
As a pole of the first functional unit input terminal, another pole of the other end as the first functional unit input terminal；
One end of first current sensor is connected to one end of the second resistance, the other end and the first voltage sensor
One end be connected to the first output end of first functional unit；
The first voltage sensor is far from first current sensor one end and the second resistance far from first electricity
The connection of flow sensor one end, the second output terminal as first functional unit.
9. (PCC) power power examination test system according to claim 1, which is characterized in that second functional unit
Including the second normally opened contact, 3rd resistor, the 4th resistance, the second current sensor and second voltage sensor；Wherein,
Second normally opened contact concatenated with the 3rd resistor after with the 4th resistor coupled in parallel, one end of the 4th resistance
As a pole of the second functional unit input terminal, another pole of the other end as the second functional unit input terminal；
One end of second current sensor is connected to one end of the 4th resistance, the other end and the second voltage sensor
One end be connected to the first output end of second functional unit；
The second voltage sensor is far from second current sensor one end and the 4th resistance far from second electricity
The connection of flow sensor one end, the second output terminal as second functional unit.
10. (PCC) power power examination test system according to claim 1, which is characterized in that the third function list
Member includes：Three-phase ac contactor, third current sensor, the 4th current sensor, the 5th current sensor, tertiary voltage pass
Sensor, the 4th voltage sensor and the 5th voltage sensor；Wherein,
Three contacts of the three-phase ac contactor are connected to first load and the first of the (PCC) power to be measured respectively
Between output end, between second load and the second output terminal of the (PCC) power to be measured and the third loads and institute
It states between the third output end of (PCC) power to be measured；
The third current sensor is connected between the first output end of the (PCC) power to be measured and first load；
4th current sensor is connected between the second output terminal of the (PCC) power to be measured and second load；
5th current sensor is connected between the third output end of the (PCC) power to be measured and third load；
One end of the tertiary voltage sensor is connected to first load and the first output end of the (PCC) power to be measured
On connecting line, on the connecting line of another second output terminal for being terminated at second load and the (PCC) power to be measured；
One end of the 4th voltage sensor is connected to second load and the second output terminal of the (PCC) power to be measured
On connecting line, on the connecting line of another third output end for being terminated at the third load and the (PCC) power to be measured；
One end of the 5th voltage sensor is connected to first load and the first output end of the (PCC) power to be measured
On connecting line, on the connecting line of another third output end for being terminated at the third load and the (PCC) power to be measured.
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| CN109474189A (en) * | 2017-09-08 | 2019-03-15 | 株洲中车时代电气股份有限公司 | A kind of high-power DC power supply |
| CN110649809B (en) * | 2019-11-06 | 2020-09-08 | 唐山标先电子有限公司 | High-power asymmetric bipolar pulse bias power supply, method and application thereof |
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