CN104793028B - A kind of three-phase multifunctional test power device and its test method - Google Patents
A kind of three-phase multifunctional test power device and its test method Download PDFInfo
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- CN104793028B CN104793028B CN201510221526.7A CN201510221526A CN104793028B CN 104793028 B CN104793028 B CN 104793028B CN 201510221526 A CN201510221526 A CN 201510221526A CN 104793028 B CN104793028 B CN 104793028B
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Abstract
The present invention provides a kind of three-phase multifunctional test power device and its test method, and supply unit comprises at least outside three phase mains, three-phase autocoupling type pressure regulator, three phase equilibrium rectifiers, the first three-phase isolation transformer, the second three-phase isolation transformer.Each electrical equipment is made rational planning for integrated and is uniformly controlled by test method, three-phase autocoupling type pressure regulator is in the case of on-load, by fixed three-phase alternating voltage is stepless, smooth, continuously output is the alternating voltage adjustable at any time of different voltage class within the specific limits；Three-phase voltage or electric current after bridge rectifier, are formed dc source by three phase equilibrium rectifiers；Three-phase isolation transformer is variable into voltage constant output current by the power source transition of certain power using electromagnetic induction principle.The present invention provides the power of alterating and direct current of different voltage class for scene, while also realizes the functions such as the D.C. resistance of current transformer ratio in electrical equipment commissioning test, C-V characteristic, polarity measurement and electrical equipment, loop resistance measurement.
Description
Technical field
The present invention relates to the commissioning test of electric automatization engineering and operation maintenance field, and in particular to a kind of three-phase multifunctional
Test power device and its test method.
Background technology
Debugging and operation field in electric automatization, generally require to use a variety of different electric currents, voltage signal to enter
Row debugging and inspection.Common practice has two kinds：(1) by the use of single-phase voltage regulator as main control source, isolating transformer, rectification are added
Loop etc. reaches the purpose of experiment；(2) desired power supply is obtained using the directly output of program-controlled technology and controllable digital technology.Side
Method (1) can only realize single-phase electric current and voltage, when being required for the power supply of three-phase for the debugging of modernization electrical equipment and experiment,
It can only repeatedly do and test three times, waste time and energy, not be consistent with real work situation under many circumstances, do not reach actual requirement,
And waveform smoothness is inadequate in direct current output, during for the higher experiment of required precision, reading is relatively unstable, does not reach technology
It is required that；Method (2) cost easy to use but required is too high, and during for needing large power supply, often seems capacity not
It is enough, the experiment of simulation can only be carried out.
The open file 1 of Application No. 201110062494.2 discloses a kind of multifunction test supply unit, will be numerous
The common portion of monomer electrical test apparatus reasonably plan and integrated, and separately designed according to different test functions
Intelligentized defencive function, effectively ensure the security reliability in the case of Different field condition, different operating librarian use, together
When integrate the operation principles of various different tests, implement rational solidification connection to different tests equipment and instrument function circuit；
The cumbersome problem of technique that different tests function wiring is brought is efficiently solved, the various conventional handing-over of high-voltage power supply and distribution system can be implemented
Experiment, meet the electrical test need of work of job site to greatest extent.But the device can not provide three phase mains simultaneously,
And the stability of some aspect outputs is inadequate.
The open file 2 of Application No. 201420162688.9 discloses a kind of portable multi-function test power device,
Using direct current 12V batteries, the first inverter and the second inverter, the output end of direct current 12V batteries connects the first inverter
Input, the output end of the first inverter leads to two-phase output line by the first breaker, its two-phase output line connection the
The input of two breakers, the output end of the second breaker lead to two-phase output line, three tunnels of two-phase output line point：The first via two
Phase output line provides alternating current 220V output port through swept resistance, and it is defeated that the rectified device of the second tunnel two-phase output line provides direct current 220V
Exit port, the 3rd tunnel two-phase output line provide direct current 110V output ports and direct current 48V output ports through the second inverter, and first
Inverter is the inverter that direct current 12V turns alternating current 220V, and the second inverter is that alternating current 220V turns the inverse of direct current 110V and direct current 48V
Become device；More power output apparatus, it is Site Service, it is exported is converted to direct current 220V by rectifier, by the second inversion
Device exports direct current 110V and direct current 48V；The device can single-phase output voltage 220V, output current 16A；Export direct current 220V, straight
Flow 110V, direct current 48V；Cost is low, small volume, easy to carry；Defect is that several fixed movable power sources can only be provided, defeated
Go out scope to fix, and the power limited exported.
The open file 3 of Application No. 201310151312.8 discloses a kind of Multifunctional three-phase transformer CT loop-around tests
Instrument, a side test terminal and secondary side test terminal are connected in the primary side and secondary side of three-phase transformer respectively, wherein：
Side test terminal is made up of primary side polarity test module, primary side switch and three-phase current inductor；Secondary side
Terminal is tested by test connection terminal, secondary side switch and secondary side polarity test module, this multi-functional loop-around test instrument
The front-rear switch cabinet working equipment that polarity test and loop resistance are tested is focused in one group of device before switch cubicle, reduced
Working strength.The device provides a kind of Multifunctional three-phase transformer CT loops for testing CT polarity tests and CT loop resistances and surveyed
Instrument is tried, defect is that CT polarity tests and loop resistance test can only be carried out.
The content of the invention
The technical problem to be solved in the present invention is, for existing multifunction test supply unit above shortcomings, to carry
For the strong three-phase multifunctional test power device of a kind of reliability, stability and its test method.
The present invention is that technical scheme is used by solving above-mentioned technical problem：
Three-phase multifunctional test power device, including at least outside three phase mains, three-phase autocoupling type pressure regulator, three phase equilibriums
Rectifier, the first three-phase isolation transformer, the second three-phase isolation transformer, outside three phase mains is through threephase switch and three-phase self coupling
The input connection of formula pressure regulator, the output end of three-phase autocoupling type pressure regulator pass through four tunnels：The first via through the first three-phase alternating current after
Electrical equipment is connected with three-phase voltage meter；Second tunnel the second three-phase and four-line AC relay accesses three phase equilibrium rectifiers；3rd tunnel
Connect after the 3rd three-phase alternating current relay is connected with the first three-phase isolation transformer, then by the 5th three-phase and four-line AC relay
Enter three phase equilibrium rectifiers；4th tunnel is divided into two after the 4th three-phase alternating current relay is connected with the second three-phase isolation transformer
Branch road, tie point are equal by the 6th three-phase and four-line AC relay, the access three of the 5th three-phase and four-line AC relay successively
Steady rectifier, the second branch road access threephase current transformer.
By such scheme, outside three phase mains A, B, C respectively with threephase switch Q0One end be connected, while B phases with it is single-phase
Switch Q1One end be connected；Threephase switch Q0The other end respectively with three-phase alternating current relay K0Normally opened main contacts be connected, three-phase
AC relay K0Normally opened main contacts the other end respectively with three-phase autocoupling type pressure regulator TY1Input be connected, three-phase self coupling
Formula pressure regulator TY1Common port be connected with the N lines of power input, three-phase autocoupling type pressure regulator TY1Output end respectively with three-phase
AC relay K1、K3、K4And three-phase and four-line AC relay K2Normally opened main contacts be connected, three-phase and four-line AC relay K2's
One end is connected with the N lines of three phase mains simultaneously；Three-phase alternating current relay K1Normally opened main contacts other end respectively with exchanging
The output terminals A of controllable voltageV、BV、CVWith three-phase voltage Table V3Input phase and company, three-phase voltage Table V3Public tail end for hand over
Flow the output end common port COM of controllable voltage；Three-phase and four-line AC relay K2Normally opened main contacts other end respectively with
Three phase equilibrium rectifier ZL three-phase input end and N-terminal is connected, three phase equilibrium rectifier ZL direct current output "+" end respectively with guarantor
Protect resistance R1It is connected with inductor rectifier L one end, the inductor rectifier L other end and current divider R one end and digital voltmeter V1's
"+" end is connected, current divider the R other end and digital voltmeter V1"-" end it is in parallel, as the "+" output end of dc source, protect
Protect resistance R1The rectified electric capacity C of the other end1With commutation capacitor C2One end be connected, three phase equilibrium rectifier ZL direct current output
"-" end and commutation capacitor C2The other end be connected and be used as the "-" output end of dc source；Three-phase alternating current relay K7At least contain
There are two groups of auxiliary contact, three-phase alternating current relay K7One group of auxiliary contact common port and voltmeter V2"+" end be connected, its
Corresponding normally opened contact is connected with the "+" output end of dc source, "+" end of its normally-closed contact as DC voltage measurement, and three
Intersecting current relay K7Another set auxiliary contact common port and voltmeter V2"-" end be connected, its corresponding normally opened contact
It is connected with the "-" output end of dc source, "-" end of its normally-closed contact as DC voltage measurement；Three-phase alternating current relay K3
The other end and the first three-phase isolation transformer T1Three-phase input end is connected, and common port is connected with the N lines of power supply, and the one or three is separated by
From transformer T1Three-phase output end and public output respectively with three-phase and four-line AC relay K2、K5One end be connected, three-phase four
Line AC relay K2、K5The other end be connected respectively with three-phase rectifier ZL three-phase and common port；Three-phase alternating current relay K4
The other end and the second three-phase isolation transformer T2Input be connected, the second three-phase isolation transformer T2Input common port with
The N lines of three phase mains are connected, the second three-phase isolation transformer T2Output end and three-phase and four-line AC relay K6It is connected and passes through
Cross threephase current transformer CT and current output terminal AA、BA、CA、NAIt is connected, the second three-phase isolation transformer T2Output common port
With three-phase and four-line AC relay K6One end and current output terminal NAIt is connected, three-phase and four-line AC relay K6The other end point
Not with three-phase and four-line AC relay K5One end be connected；
Single-phase switch Q1One end be connected respectively with the B phases of three phase mains and the N lines of three phase mains, single-phase switch Q1It is another
One end L1 respectively with self-holding button SB1、SB2、SB3、SB4、SB5、SB6One end, meter with overheat protector FR normally closed node
When device JS power supply terminals one end, operation power indicator lamp D one end be connected, the timer JS power supply terminals other end and operation power
The indicator lamp D other end be connected and with the N of power supply1Line is connected；The other end of overheat protector FR normally closed node respectively with point
One end of dynamic formula stop button SS normally closed node, three-phase alternating current relay K0One end of normally closed node be connected, three-phase alternating current
Relay K0Normally closed node the other end and light emitting diode DSSOne end be connected, light emitting diode DSSThe other end and power supply
N1Line is connected；The other end of point dynamic formula stop button SS normally closed node respectively with dynamic formula start button ST one end and three
Intersecting current relay K0Auxiliary normally opened contact one end be connected, point dynamic formula start button the ST other end and three-phase type pressure regulator TY1
Zero point auxiliary node TK1One end be connected, zero point auxiliary node TK1The other end and three-phase alternating current relay K0Auxiliary it is normal
Open the contact other end and light emitting diode DSTOne end, three-phase alternating current relay K0Coil one end be connected, light emitting diode DST
The other end and three-phase alternating current relay K0The coil other end be connected and with the N of power supply1Line is connected；
Self-holding button SB1The other end respectively with three-phase alternating current relay K1Coil one end and light emitting diode D1's
One end is connected, three-phase alternating current relay K1The coil other end and light emitting diode D1The other end be connected and with the N of power supply1Line
It is connected；
Self-holding button SB2The other end respectively with three-phase alternating current relay K3One end of normally closed contact be connected, three is intersecting
Current relay K3Normally closed contact the other end and three-phase alternating current relay K4One end of normally closed contact be connected, three-phase alternating current after
Electrical equipment K4Normally closed contact the other end and three-phase and four-line AC relay K2Coil one end and light emitting diode D2One end phase
Even, three-phase and four-line AC relay K2The coil other end and light emitting diode D2The other end be connected and with the N of power supply1Line phase
Even；
Self-holding button SB3The other end respectively with three-phase and four-line AC relay K2One end of normally closed contact be connected, three
The line AC relay K of phase four2Normally closed contact the other end and three-phase alternating current relay K4One end of normally closed contact be connected, three
Intersecting current relay K4Normally closed contact the other end and three-phase and four-line AC relay K5One end of coil, light emitting diode D3
One end, the line AC relay K of three line four6One end of normally closed contact be connected, three-phase and four-line AC relay K6Normally closed contact
The other end and three-phase alternating current relay K3One end of coil be connected, three-phase alternating current relay K3Coil the other end difference
With light emitting diode D3The other end, three-phase and four-line AC relay K5The other end of coil be connected and with the N of power supply1Line is connected；
Self-holding button SB4The other end respectively with three-phase and four-line AC relay K2One end of normally closed contact be connected, three
The line AC relay K of phase four2Normally closed contact the other end and three-phase and four-line AC relay K6Normally closed contact one end phase
Even, three-phase and four-line AC relay K6Normally closed contact the other end and three-phase alternating current relay K4Coil one end and light-emitting diodes
Pipe D2One end be connected, three-phase alternating current relay K4The coil other end and light emitting diode D2The other end be connected and and power supply
N1Line is connected；
Self-holding button SB5The other end respectively with three-phase and four-line AC relay K2One end of normally closed contact be connected, three
The line AC relay K of phase four2Normally closed contact the other end and three-phase alternating current relay K4One end of normally closed contact be connected, three
Intersecting current relay K4Normally closed contact the other end and three-phase and four-line AC relay K6One end of coil, light emitting diode D5
One end, three-phase and four-line AC relay K5One end of normally closed contact be connected, three-phase and four-line AC relay K5Normally closed contact
The other end and three-phase alternating current relay K3One end of coil be connected, three-phase alternating current relay K3Coil the other end difference
With light emitting diode D5The other end, three-phase and four-line AC relay K6The other end of coil be connected and with the N of power supply1Line is connected；
Self-holding button SB6The other end respectively with three-phase alternating current relay K7Coil one end and light emitting diode D6's
One end is connected, three-phase alternating current relay K7The coil other end and light emitting diode D6The other end be connected and with the N of power supply1Line
It is connected.
Present invention also offers a kind of test method of above-mentioned three-phase multifunctional test power device, following work is specifically included
Sequence：
(1) three-phase or single-phase voltage output：By required test requirements document, by voltage output end AV/BV/CV/ COM respectively with quilt
Examination equipment connects, and presses self-holding button SB1, three-phase alternating current relay K1Adhesive, slowly adjust three-phase autocoupling type pressure regulator
TY1, while observe three-phase voltage Table V3Reading, stop when reaching desired magnitude of voltage；When needing to utilize three-phase voltage Table V3Make
, only need to be by self-holding button SB when being measured for external power source1Upspring, three-phase alternating current relay K1Disconnection；
(2) three-phase or single-phase High-current output：By required test requirements document, by High-current output end AA/BA/CA/NARespectively with
Tested device connects, and is closed a floodgate after pressing a dynamic formula button ST, indicator lamp D0Light：
A. self-holding button SB is pressed4, three-phase alternating current relay K4Close a floodgate, indicator lamp D4Light；
B. self-holding button SB is pressed5, three-phase alternating current relay K3、K5Close a floodgate, indicator lamp D5Light；
Slowly regulation three-phase autocoupling type pressure regulator TY1, while observe ammeter A1/A2/A3, after reaching test current, quickly
The timing button on timer JS is pressed, until after testing equipment trip operation, corresponding timer stops timing, quick regulation
Three-phase type pressure regulator TY1To zero-bit, and press self-holding button SB4Or SB5Afterwards, indicator lamp D4Or D5Extinguish, then press a dynamic formula
Button SS, indicator lamp D0Extinguish；
(3) direct voltage output：Empirically necessary requirement, direct current output "+,-" end is connected with tested device respectively,
Press self-holding button SB2After close a floodgate, indicator lamp D2Light, slowly adjust three-phase autocoupling type pressure regulator TY1, it is defeated when needing to measure
When going out voltage, self-holding button SB is pressed6Afterwards, indicator lamp D3Light, voltmeter V2Start to measure, reach required DC voltage
Afterwards, regulation three-phase autocoupling type pressure regulator TY is stopped1, voltmeter V1Reading be current line in electric current；
(4) measurement of D.C. resistance, loop resistance：Make self-holding button SB3Ejection, indicator lamp D3Extinguish, by test requirements document
By direct current output "+,-" end and voltmeter V2Input "+,-" end connected respectively with tested device, slowly adjust three-phase self coupling
Formula pressure regulator TY1, DC voltage Table V1、V2Start reading, when electric current reaches a certain permissible value, utilize resistance measurement with voltammetry
Principle is：Voltmeter V2Reading divided by voltmeter V1Reading.
The operation principle of the present invention：By electricity such as three-phase autocoupling type pressure regulator, three phase equilibrium rectifiers, three-phase isolation transformers
Gas equipment carries out rational plan by automatic technology and integrates and be uniformly controlled, and three-phase autocoupling type pressure regulator can be in on-load feelings
Under condition, by fixed three-phase alternating voltage it is stepless, it is smooth, continuously output for different voltage class within the specific limits at any time
Adjustable alternating voltage；Three-phase voltage or electric current after bridge rectifier, are formed dc source by three phase equilibrium rectifiers；Three are isolated
Transformer is variable into voltage constant output current by the power source transition of certain power using electromagnetic induction principle, due to secondary discord ground
It is connected, secondary, which is appointed, does not have potential difference between single line and ground, safe to use.The friendship of different voltage class is effectively provided for scene
Dc source, to realize the purpose of the required electric current in output scene, voltage, while also it is aided with automatic measurement technology, to realize
The D.C. resistance of current transformer ratio, C-V characteristic, polarity measurement and electrical equipment in respective electric equipment commissioning test,
The functions such as loop resistance measurement, ensure the reliability in the case of varying environment, different operating librarian use, meet to greatest extent
The needs of work on the spot.
The present invention has the advantages that compared with prior art：
1st, the present invention can preferably simulate the practical operation situation of electrical equipment simultaneously from side three-phase of electrical equipment,
And the parameter testing and verification of electrical equipment are carried out, and the actual use situation of each equipment can be more really simulated, it is convenient timely
Discovering device and equipment between on connection line the problem of；
2nd, apparatus of the present invention relative contrast file 1 can not only provide single phase poaer supply and may also provide three phase mains, and export more
Add steadily, effect is more preferable, and applicability is stronger；Relative contrast's file 2 provides the electricity that can adjust output size in certain limit at any time
Source device, significantly meets the various demands at scene, and can provide three phase mains, moreover it is possible to which high-voltage power supply and distribution system is carried out
Experiment；The compatible major function of multinomial equipment of relative contrast's file 3, can efficiently accomplish the electric current in electrical equipment commissioning test
Mutual inductor ratio, C-V characteristic, D.C. resistance, loop resistance measurement function and the relay of secondary side polarity measurement and electrical equipment
Most of function of comprehensive tester is protected, preferably, reaches test requirements document faster, effectively shortens test period.
Brief description of the drawings
Fig. 1 is the main circuit diagram of three-phase multifunctional test power device of the present invention；
Fig. 2 is the electric operation control circuit figure of three-phase multifunctional test power device of the present invention；
In figure：Q0- threephase switch, Q1- single-phase switch；K0、K1、K3、K4、K7- three-phase alternating current relay；K2、K5、K6- three-phase
Four line AC relays；TY1- three-phase autocoupling type pressure regulator, TK1The zero-bit contact of-three-phase autocoupling type pressure regulator；FR- overcurrent protections
Device, T1- the first three-phase isolation transformer, T2- the second three-phase isolation transformer；The phase equilibrium rectifiers of ZL- tri-；R1- protective resistance,
L- inductor rectifiers, C1、C2- commutation capacitor, R- current dividers；CT- three-phase type current transformers, SS, ST- point dynamic formula button；SB1、
SB2、SB3、SB4、SB5、SB6- self-holding button (tape light D respectively1、D2、D3、D4、D5、D6)；D- operation power indicator lamps,
JS- timers；Dst- major loop combined floodgate indicator lamp, Dss- major loop disconnects indicator lamp.
Embodiment
Below according to specific embodiment and with reference to accompanying drawing, the present invention is further detailed explanation.
Shown in 1~Fig. 2 of reference picture, three-phase multifunctional test power device provided by the invention, including at least outside three-phase
Power supply, three-phase autocoupling type pressure regulator TY1, three phase equilibrium rectifier ZL, the first three-phase isolation transformer T1, the two or three isolate change
Depressor T2, as shown in figure 1, described outside three phase mains A, B, C respectively with threephase switch Q0One end be connected, while B phases with it is single-phase
Switch Q1One end be connected；Threephase switch Q0The other end respectively with three-phase alternating current relay K0Normally opened main contacts be connected, three-phase
AC relay K0Normally opened main contacts the other end respectively with three-phase autocoupling type pressure regulator TY1Input be connected, three-phase self coupling
Formula pressure regulator TY1Common port be connected with the N lines of power input, three-phase autocoupling type pressure regulator TY1Output end respectively with three-phase
AC relay K1、K3、K4And three-phase and four-line AC relay K2Normally opened main contacts be connected, three-phase and four-line AC relay K2's
One end is connected with the N lines of three phase mains simultaneously；Three-phase alternating current relay K1Normally opened main contacts other end respectively with exchanging
The output terminals A of controllable voltageV、BV、CVWith three-phase voltage Table V3Input phase and company, three-phase voltage Table V3Public tail end for hand over
Flow the output end common port COM of controllable voltage；Three-phase and four-line AC relay K2Normally opened main contacts other end respectively with
Three phase equilibrium rectifier ZL three-phase input end and N-terminal is connected, three phase equilibrium rectifier ZL direct current output "+" end respectively with guarantor
Protect resistance R1It is connected with inductor rectifier L one end, the inductor rectifier L other end and current divider R one end and digital voltmeter V1's
"+" end is connected, current divider the R other end and digital voltmeter V1"-" end it is in parallel, as the "+" output end of dc source, protect
Protect resistance R1The rectified electric capacity C of the other end1With commutation capacitor C2One end be connected, three phase equilibrium rectifier ZL direct current output
"-" end and commutation capacitor C2The other end be connected and be used as the "-" output end of dc source；Three-phase alternating current relay K7At least contain
There are two groups of auxiliary contact, three-phase alternating current relay K7One group of auxiliary contact common port and voltmeter V2"+" end be connected, its
Corresponding normally opened contact is connected with the "+" output end of dc source, "+" end of its normally-closed contact as DC voltage measurement, and three
Intersecting current relay K7Another set auxiliary contact common port and voltmeter V2"-" end be connected, its corresponding normally opened contact
It is connected with the "-" output end of dc source, "-" end of its normally-closed contact as DC voltage measurement；Three-phase alternating current relay K3
The other end and the first three-phase isolation transformer T1Three-phase input end is connected, and common port is connected with the N lines of power supply, and the one or three is separated by
From transformer T1Three-phase output end and public output respectively with three-phase and four-line AC relay K2、K5One end be connected, three-phase four
Line AC relay K2、K5The other end be connected respectively with three-phase rectifier ZL three-phase and common port；Three-phase alternating current relay K4
The other end and the second three-phase isolation transformer T2Input be connected, the second three-phase isolation transformer T2Input common port with
The N lines of three phase mains are connected, the second three-phase isolation transformer T2Output end and three-phase and four-line AC relay K6It is connected and passes through
Cross threephase current transformer CT and current output terminal AA、BA、CA、NAIt is connected, the second three-phase isolation transformer T2Output common port
With three-phase and four-line AC relay K6One end and current output terminal NAIt is connected, three-phase and four-line AC relay K6The other end point
Not with three-phase and four-line AC relay K5One end be connected；
As shown in Fig. 2 single-phase switch Q1One end be connected respectively with the B phases of three phase mains and the N lines of three phase mains, it is single-phase
Switch Q1Other end L1 respectively with self-holding button SB1、SB2、SB3、SB4、SB5、SB6With overheat protector FR normally closed node
One end, timer JS power supply terminals one end, operation power indicator lamp D one end be connected, the timer JS power supply terminal other ends
Be connected with the operation power indicator lamp D other end and with the N of power supply1Line (single-phase switch Q1Other end N1) be connected；Overtemperature protection
The other end of device FR normally closed node respectively with one end of dynamic formula stop button SS normally closed node, three-phase alternating current relay K0
One end of normally closed node be connected, three-phase alternating current relay K0Normally closed node the other end and light emitting diode DSSOne end phase
Even, light emitting diode DSSThe other end and power supply N1Line is connected；The other end minute of point dynamic formula stop button SS normally closed node
Not one end with point dynamic formula start button ST and three-phase alternating current relay K0Auxiliary normally opened contact one end be connected, point dynamic formula start
The button ST other end and three-phase type pressure regulator TY1Zero point auxiliary node TK1One end be connected, zero point auxiliary node TK1It is another
One end and three-phase alternating current relay K0The auxiliary normally opened contact other end and light emitting diode DSTOne end, three-phase alternating current relay
K0Coil one end be connected, light emitting diode DSTThe other end and three-phase alternating current relay K0The coil other end be connected and with
The N of power supply1Line is connected；
Self-holding button SB1The other end respectively with three-phase alternating current relay K1Coil one end and light emitting diode D1's
One end is connected, three-phase alternating current relay K1The coil other end and light emitting diode D1The other end be connected and with the N of power supply1Line
It is connected；
Self-holding button SB2The other end respectively with three-phase alternating current relay K3One end of normally closed contact be connected, three is intersecting
Current relay K3Normally closed contact the other end and three-phase alternating current relay K4One end of normally closed contact be connected, three-phase alternating current after
Electrical equipment K4Normally closed contact the other end and three-phase and four-line AC relay K2Coil one end and light emitting diode D2One end phase
Even, three-phase and four-line AC relay K2The coil other end and light emitting diode D2The other end be connected and with the N of power supply1Line phase
Even；
Self-holding button SB3The other end respectively with three-phase and four-line AC relay K2One end of normally closed contact be connected, three
The line AC relay K of phase four2Normally closed contact the other end and three-phase alternating current relay K4One end of normally closed contact be connected, three
Intersecting current relay K4Normally closed contact the other end and three-phase and four-line AC relay K5One end of coil, light emitting diode D3
One end, the line AC relay K of three line four6One end of normally closed contact be connected, three-phase and four-line AC relay K6Normally closed contact
The other end and three-phase alternating current relay K3One end of coil be connected, three-phase alternating current relay K3Coil the other end difference
With light emitting diode D3The other end, three-phase and four-line AC relay K5The other end of coil be connected and with the N of power supply1Line is connected；
Self-holding button SB4The other end respectively with three-phase and four-line AC relay K2One end of normally closed contact be connected, three
The line AC relay K of phase four2Normally closed contact the other end and three-phase and four-line AC relay K6Normally closed contact one end phase
Even, three-phase and four-line AC relay K6Normally closed contact the other end and three-phase alternating current relay K4Coil one end and light-emitting diodes
Pipe D2One end be connected, three-phase alternating current relay K4The coil other end and light emitting diode D2The other end be connected and and power supply
N1Line is connected；
Self-holding button SB5The other end respectively with three-phase and four-line AC relay K2One end of normally closed contact be connected, three
The line AC relay K of phase four2Normally closed contact the other end and three-phase alternating current relay K4One end of normally closed contact be connected, three
Intersecting current relay K4Normally closed contact the other end and three-phase and four-line AC relay K6One end of coil, light emitting diode D5
One end, three-phase and four-line AC relay K5One end of normally closed contact be connected, three-phase and four-line AC relay K5Normally closed contact
The other end and three-phase alternating current relay K3One end of coil be connected, three-phase alternating current relay K3Coil the other end difference
With light emitting diode D5The other end, three-phase and four-line AC relay K6The other end of coil be connected and with the N of power supply1Line is connected；
Self-holding button SB6The other end respectively with three-phase alternating current relay K7Coil one end and light emitting diode D6's
One end is connected, three-phase alternating current relay K7The coil other end and light emitting diode D6The other end be connected and with the N of power supply1Line
It is connected.
In order that the purpose of the present invention and technical scheme become apparent from substantially, enter traveling one to the present invention below in conjunction with accompanying drawing
Walk explanation.Electric wiring is connected by the above process, closes air switch Q0And Q1, by three-phase autocoupling type pressure regulator TY1Adjust
Zero-bit, as three-phase autocoupling type pressure regulator TY need to be known during experiment1Output voltage, only need to press self-holding button SB1, three
Intersecting current relay K1Adhesive, three-phase voltage Table V3Reading difference three phase-to-ground voltages (another three-phase voltage Table V3In three-phase alternating current
Relay K1After disconnection, the voltage measurement that may also act as other purposes is carried out), it is specific as follows：
(1) three-phase or single-phase voltage output：By required test requirements document, by voltage output end AV/BV/CV/ COM respectively with quilt
Examination equipment connects, and presses self-holding button SB1, three-phase alternating current relay K1Adhesive, slowly adjust three-phase autocoupling type pressure regulator
TY1, while observe three-phase voltage Table V3Reading, stop when reaching desired magnitude of voltage；When needing to utilize three-phase voltage Table V3Make
, only need to be by self-holding button SB when being measured for external power source1Upspring, three-phase alternating current relay K1Disconnection；
(2) three-phase or single-phase High-current output：By required test requirements document, by High-current output end AA/BA/CA/NARespectively with
Tested device, which connects, (if desired for timing, need to seal in the action normally opened node of test item timer JS control input or straight
Connect short circuit), closed a floodgate after pressing a dynamic formula button ST, indicator lamp D lights the (size and degree of regulation of present invention electric current needed for
Difference is divided into A, B two ways)：
A. self-holding button SB is pressed4, three-phase alternating current relay K4Close a floodgate, indicator lamp D4Light；
B. self-holding button SB is pressed5, three-phase alternating current relay K3、K5Close a floodgate, indicator lamp D5Light；
Slowly regulation three-phase autocoupling type pressure regulator TY1, while observe ammeter A1/A2/A3, after reaching test current, quickly
The timing button on timer JS (single control digital timer) is pressed, until after testing equipment trip operation, corresponding timing
Device stops timing, quick regulation three-phase type pressure regulator TY1To zero-bit, and press self-holding button SB4Or SB5Afterwards, indicator lamp D4Or
D5Extinguish, then press dynamic formula button SS, indicator lamp D an extinguishing；
(3) direct voltage output：Empirically necessary requirement, direct current output "+,-" end is connected with tested device respectively,
Press self-holding button SB2After close a floodgate, indicator lamp D2Light, slowly adjust three-phase autocoupling type pressure regulator TY1, it is defeated when needing to measure
When going out voltage, self-holding button SB is pressed6Afterwards, indicator lamp D3Light, voltmeter V2Start to measure, reach required DC voltage
Afterwards, regulation three-phase autocoupling type pressure regulator TY is stopped1, voltmeter V1Reading be current line in electric current；
(4) measurement of D.C. resistance, loop resistance：Make self-holding button SB3Ejection, indicator lamp D3Extinguish, by test requirements document
By direct current output "+,-" end and voltmeter V2Input "+,-" end connected respectively with tested device, slowly adjust three-phase self coupling
Formula pressure regulator TY1, DC voltage Table V1、V2Start reading (voltmeter V1Reading be actually DC current in loop
Value), when electric current reaches a certain permissible value, be using the principle of resistance measurement with voltammetry：Voltmeter V2Reading divided by voltmeter V1
Reading.
It should be understood that above-described embodiment is only illustrative of the invention and is not intended to limit the scope of the invention.In addition, it is to be understood that
After the content of the invention lectured has been read, those skilled in the art can make various changes or modifications to the present invention, without
Depart from the spirit and scope of technical solution of the present invention, it all should cover in scope of the presently claimed invention.
Claims (2)
1. three-phase multifunctional test power device, it is characterised in that including at least outside three phase mains, three-phase autocoupling type pressure regulator
TY1, three phase equilibrium rectifier ZL, the first three-phase isolation transformer T1, the second three-phase isolation transformer T2, outside three phase mains warp
Threephase switch Q0With three-phase autocoupling type pressure regulator TY1Input connection, three-phase autocoupling type pressure regulator TY1Output end pass through four
Road：The first via is through three-phase alternating current relay K1With three-phase voltage Table V3Connection；Second tunnel is through three-phase and four-line AC relay K2Access
Three phase equilibrium rectifier ZL；3rd tunnel is through three-phase alternating current relay K3With three-phase isolation transformer T1After connection, then by three-phase four
Line AC relay K5Access three phase equilibrium rectifier ZL；4th tunnel is through three-phase alternating current relay K4Transformation is isolated with the two or three
Device T2It is divided into two branch roads after connection, tie point passes through three-phase and four-line AC relay K successively6, three-phase and four-line AC relay
K5Access three phase equilibrium rectifier ZL, the second branch road access threephase current transformer CT；
Outside three phase mains A, B, C respectively with threephase switch Q0One end be connected, while B phases and single-phase switch Q1One end be connected；
Threephase switch Q0The other end respectively with three-phase alternating current relay K0Normally opened main contacts be connected, three-phase alternating current relay K0It is normal
Open the other end of main contacts respectively with three-phase autocoupling type pressure regulator TY1Input be connected, three-phase autocoupling type pressure regulator TY1Public affairs
End is connected with the N lines of power input altogether, three-phase autocoupling type pressure regulator TY1Output end respectively with three-phase alternating current relay K1、
K3、K4And three-phase and four-line AC relay K2Normally opened main contacts be connected, three-phase and four-line AC relay K2One end simultaneously with three
The N lines of phase power supply are connected；Three-phase alternating current relay K1Normally opened main contacts other end respectively with exchanging the defeated of controllable voltage
Go out to hold AV、BV、CVWith three-phase voltage Table V3Input phase and company, three-phase voltage Table V3Public tail end be exchange controllable voltage
Output end common port COM；Three-phase and four-line AC relay K2Normally opened main contacts other end respectively with three phase equilibrium rectifications
Device ZL three-phase input end and N-terminal is connected, three phase equilibrium rectifier ZL direct current output "+" end respectively with protective resistance R1With it is whole
Stream inductance L one end is connected, the inductor rectifier L other end and current divider R one end and digital voltmeter V1"+" end be connected,
The current divider R other end and digital voltmeter V1"-" end it is in parallel, as the "+" output end of dc source, protective resistance R1's
The rectified electric capacity C of the other end1With commutation capacitor C2One end be connected, three phase equilibrium rectifier ZL direct current output "-" end and rectification
Electric capacity C2The other end be connected and be used as the "-" output end of dc source；Three-phase alternating current relay K7At least contain two groups of auxiliary
Contact, three-phase alternating current relay K7One group of auxiliary contact common port and voltmeter V2"+" end be connected, be normally opened corresponding to it
Contact is connected with the "+" output end of dc source, "+" end of its normally-closed contact as DC voltage measurement, three-phase alternating current relay
Device K7Another set auxiliary contact common port and voltmeter V2"-" end be connected, its corresponding normally opened contact and dc source
"-" output end be connected, "-" end of its normally-closed contact as DC voltage measurement；Three-phase alternating current relay K3The other end with
First three-phase isolation transformer T1Three-phase input end is connected, and common port is connected with the N lines of power supply, the first three-phase isolation transformer T1
Three-phase output end and public output respectively with three-phase and four-line AC relay K2、K5One end be connected, three-phase and four-line exchange relay
Device K2、K5The other end be connected respectively with three-phase rectifier ZL three-phase and common port；Three-phase alternating current relay K4The other end with
Second three-phase isolation transformer T2Input be connected, the second three-phase isolation transformer T2Input common port and three phase mains N
Line is connected, the second three-phase isolation transformer T2Output end and three-phase and four-line AC relay K6It is connected and mutual by three-phase current
Sensor CT and current output terminal AA、BA、CA、NAIt is connected, the second three-phase isolation transformer T2Output common port and three-phase and four-line hand over
Current relay K6One end and current output terminal NAIt is connected, three-phase and four-line AC relay K6The other end respectively with three-phase and four-line
AC relay K5One end be connected；
Single-phase switch Q1One end be connected respectively with the B phases of three phase mains and the N lines of three phase mains, single-phase switch Q1The other end
L1 respectively with self-holding button SB1、SB2、SB3、SB4、SB5、SB6One end, timer with overheat protector FR normally closed node
JS power supply terminals one end, operation power indicator lamp D one end are connected, the timer JS power supply terminals other end and operation power instruction
The lamp D other end be connected and with the N of power supply1Line is connected；The other end of overheat protector FR normally closed node respectively with a dynamic formula
One end of stop button SS normally closed node, three-phase alternating current relay K0One end of normally closed node be connected, three-phase alternating current relay
Device K0Normally closed node the other end and light emitting diode DSSOne end be connected, light emitting diode DSSThe other end and power supply N1
Line is connected；The other end of point dynamic formula stop button SS normally closed node intersects with a dynamic formula start button ST one end and three respectively
Current relay K0Auxiliary normally opened contact one end be connected, point dynamic formula start button the ST other end and three-phase type pressure regulator TY1Zero
Point auxiliary node TK1One end be connected, zero point auxiliary node TK1The other end and three-phase alternating current relay K0Auxiliary it is normally opened touch
The point other end and light emitting diode DSTOne end, three-phase alternating current relay K0Coil one end be connected, light emitting diode DSTIt is another
One end and three-phase alternating current relay K0The coil other end be connected and with the N of power supply1Line is connected；
Self-holding button SB1The other end respectively with three-phase alternating current relay K1Coil one end and light emitting diode D1One end
It is connected, three-phase alternating current relay K1The coil other end and light emitting diode D1The other end be connected and with the N of power supply1Line is connected；
Self-holding button SB2The other end respectively with three-phase alternating current relay K3One end of normally closed contact be connected, three-phase alternating current after
Electrical equipment K3Normally closed contact the other end and three-phase alternating current relay K4One end of normally closed contact be connected, three-phase alternating current relay
K4Normally closed contact the other end and three-phase and four-line AC relay K2Coil one end and light emitting diode D2One end be connected, three
The line AC relay K of phase four2The coil other end and light emitting diode D2The other end be connected and with the N of power supply1Line is connected；
Self-holding button SB3The other end respectively with three-phase and four-line AC relay K2One end of normally closed contact be connected, three-phase four
Line AC relay K2Normally closed contact the other end and three-phase alternating current relay K4One end of normally closed contact be connected, three is intersecting
Current relay K4Normally closed contact the other end and three-phase and four-line AC relay K5One end of coil, light emitting diode D3One
End, the line AC relay K of three line four6One end of normally closed contact be connected, three-phase and four-line AC relay K6Normally closed contact it is another
One end and three-phase alternating current relay K3One end of coil be connected, three-phase alternating current relay K3Coil the other end respectively with hair
Optical diode D3The other end, three-phase and four-line AC relay K5The other end of coil be connected and with the N of power supply1Line is connected；
Self-holding button SB4The other end respectively with three-phase and four-line AC relay K2One end of normally closed contact be connected, three-phase four
Line AC relay K2Normally closed contact the other end and three-phase and four-line AC relay K6One end of normally closed contact be connected, three
The line AC relay K of phase four6Normally closed contact the other end and three-phase alternating current relay K4Coil one end and light emitting diode D2's
One end is connected, three-phase alternating current relay K4The coil other end and light emitting diode D2The other end be connected and with the N of power supply1Line
It is connected；
Self-holding button SB5The other end respectively with three-phase and four-line AC relay K2One end of normally closed contact be connected, three-phase four
Line AC relay K2Normally closed contact the other end and three-phase alternating current relay K4One end of normally closed contact be connected, three is intersecting
Current relay K4Normally closed contact the other end and three-phase and four-line AC relay K6One end of coil, light emitting diode D5One
End, three-phase and four-line AC relay K5One end of normally closed contact be connected, three-phase and four-line AC relay K5Normally closed contact it is another
One end and three-phase alternating current relay K3One end of coil be connected, three-phase alternating current relay K3Coil the other end respectively with hair
Optical diode D5The other end, three-phase and four-line AC relay K6The other end of coil be connected and with the N of power supply1Line is connected；
Self-holding button SB6The other end respectively with three-phase alternating current relay K7Coil one end and light emitting diode D6One end
It is connected, three-phase alternating current relay K7The coil other end and light emitting diode D6The other end be connected and with the N of power supply1Line is connected.
2. the test method of the three-phase multifunctional test power device described in a kind of the claims 1, it is characterised in that specific
Including following process：
（1）Three-phase or single-phase voltage output：By required test requirements document, by voltage output end AV/BV/CV/ COM is set with subject respectively
It is standby to connect, press self-holding button SB1, three-phase alternating current relay K1Adhesive, slowly adjust three-phase autocoupling type pressure regulator TY1, together
When observe three-phase voltage Table V3Reading, stop when reaching desired magnitude of voltage；When needing to utilize three-phase voltage Table V3As outside
, only need to be by self-holding button SB during power measurement1Upspring, three-phase alternating current relay K1Disconnection；
（2）Three-phase or single-phase High-current output：By required test requirements document, by High-current output end AA/BA/CA/NARespectively with subject
Equipment connects, and is closed a floodgate after pressing a dynamic formula button ST, indicator lamp D0Light：
A. self-holding button SB is pressed4, three-phase alternating current relay K4Close a floodgate, indicator lamp D4Light；
B. self-holding button SB is pressed5, three-phase alternating current relay K3、K5Close a floodgate, indicator lamp D5Light；
Slowly regulation three-phase autocoupling type pressure regulator TY1, while observe ammeter A1/A2/A3, after reaching test current, quickly press
Timing button on timer JS, until after testing equipment trip operation, corresponding timer stops timing, quick regulation three-phase
Formula pressure regulator TY1To zero-bit, and press self-holding button SB4Or SB5Afterwards, indicator lamp D4Or D5Extinguish, then press a dynamic formula button
SS, indicator lamp D0Extinguish；
（3）Direct voltage output：Empirically necessary requirement, direct current output "+,-" end is connected with tested device respectively, pressed
Self-holding button SB2After close a floodgate, indicator lamp D2Light, slowly adjust three-phase autocoupling type pressure regulator TY1, electricity is exported when needing to measure
During pressure, self-holding button SB is pressed6Afterwards, indicator lamp D3Light, voltmeter V2Start to measure, after reaching required DC voltage, stop
Only adjust three-phase autocoupling type pressure regulator TY1, voltmeter V1Reading be current line in electric current；
（4）The measurement of D.C. resistance, loop resistance：Make self-holding button SB3Ejection, indicator lamp D3Extinguish, will be straight by test requirements document
Stream output "+,-" hold and voltmeter V2Input "+,-" end connected respectively with tested device, slowly adjust three-phase autocoupling type and adjust
Depressor TY1, DC voltage Table V1、V2Start reading, when electric current reaches a certain permissible value, utilize the principle of resistance measurement with voltammetry
I.e.：Voltmeter V2Reading divided by voltmeter V1Reading.
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| CN108845195A (en) * | 2018-04-15 | 2018-11-20 | 武汉市整流器研究所 | A kind of DC converter station earthing pole parameter tester |
| CN108802527B (en) * | 2018-06-11 | 2020-10-27 | 国家电网有限公司 | Excitation small current closed loop test trolley |
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