CN108802527A - Excitation low current closed test trolley - Google Patents
Excitation low current closed test trolley Download PDFInfo
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- CN108802527A CN108802527A CN201810592285.0A CN201810592285A CN108802527A CN 108802527 A CN108802527 A CN 108802527A CN 201810592285 A CN201810592285 A CN 201810592285A CN 108802527 A CN108802527 A CN 108802527A
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- voltage
- pressure regulator
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- low current
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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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- General Physics & Mathematics (AREA)
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
The invention discloses a kind of excitation low current closed test trolleies, including power input, the power input is connect through the first switching ac voltage, the first pressure regulator with synchronous AC voltage output end successively, the rear circuit of first pressure regulator is connect through three-phase current-limiting resistance with rotor alternating current output end, and the rear circuit of the first pressure regulator is also connect through corner transformer, the first change-over switch, the second change-over switch with rectifier cabinet ac voltage output successively；The power input is connect through the first switching ac voltage, the second pressure regulator with buckling ac voltage output successively, and the power input is also connected through the second switching ac voltage, isolating transformer, oscillograph with rectifier cabinet DC voltage output end successively.Therefore, the present invention is suitable for excitation low current closed test, has the characteristics that use scope is wide, improves the safety of experiment, improves experiment correctness.
Description
Technical field
The present invention relates to a kind of test cart, especially a kind of excitation low current closed test trolley.
Background technology
When synchronous generator is run, it is necessary to be passed through DC current in rotor windings, to establish magnetic field, this electric current claims
For exciting current, and the whole system for supplying electric current is known as excitation system.After operation each time or unit maintenance, in order to examine
Excitation system adjuster and power cabinet synchronization, phase shift, triggering and thyristor control Trigger Function, verify the standard of each parameter of power cabinet
True property will carry out low current experiment to excitation system.In the prior art, experiment using test apparatus component overlapped mode into
Row, which haves the shortcomings that following apparent：1. test equipment is carried arduously, and occupies space after disk, testing crew can
Activity space remains little, and testing ground seems disorderly and unsystematic.2. test connection is more, each test connection is taken out stitches and will be spent
Take the long period, and more people is needed repeatedly to check to confirm the correctness of wiring, greatly reduces working efficiency.3. pressure regulator
There is no intuitive numerical value to show when adjusting voltage, a people is needed to adjust one people of the runner real-time survey measurements of multimeter；Operate excitation
The output waveform of immediate observation oscillograph is unable to when adjuster, it is inconvenient.4. overlapping circuit connection column, there are exposed part, examinations
There are security risks when testing personnel's observation and record data, while wasting time and energy.
In view of the above problems, Chinese patent literature discloses, a kind of application No. is the examinations of 201310500351.4 excitation system
Trolley is tested, the equipment for integrating low current experiment and relay checking forms an entirety, can complete small electricity on a device
Stream experiment and relay checking solve existing excitation system low current experiment and need to repeat to tear open for the test equipment of dispersion
Wiring is unfavorable for the defect of security management and control.But said program is only applicable to excitation system excitation low current open loop experiment, is only capable of
Check static waveform, input and output voltage, set of currents number are few, and adjustable transformer is few, synchronous AC voltage and rectifier cabinet alternating current
Press differential seat angle unadjustable, using flexible is poor, use scope is narrow, voltage, ammeter is fitted without, when pressure regulator adjusts voltage
There is no intuitive numerical value to show, a people is needed to adjust one people of the runner real-time survey measurements of multimeter；When operation field regulator not
The output waveform of energy immediate observation oscillograph, it is inconvenient, have certain safety wind dangerous；And need to provide respectively 380V and
The AC power of 220V increases wiring, and operation complexity and wiring error probability increase, and reduce experiment correctness.Therefore, existing
With the presence of excitation system test trolley be only applicable to excitation low current open loop experiment, use scope it is narrow, with certain safety
Risk reduces the problem of experiment correctness.
Invention content
The object of the present invention is to provide a kind of excitation low current closed test trolleies.The present invention is suitable for the small electricity of excitation
Closed test is flowed, has the characteristics that use scope is wide, improve the safety of experiment, improve experiment correctness.
Technical scheme of the present invention：Excitation low current closed test trolley, including power input, the power input
It is connect successively with synchronous AC voltage output end through the first switching ac voltage, the first pressure regulator, the rear circuit of the first pressure regulator
Connect with rotor alternating current output end through three-phase current-limiting resistance, the rear circuit of the first pressure regulator also successively through corner transformer,
First change-over switch, the second change-over switch are connect with rectifier cabinet ac voltage output；The power input is successively through first
Switching ac voltage, the second pressure regulator are connect with buckling ac voltage output, and the power input is also handed over through second successively
Galvanic electricity compresses switch, isolating transformer, oscillograph are connected with rectifier cabinet DC voltage output end.
In excitation low current closed test trolley above-mentioned, the rectifier cabinet DC voltage output end is introduced by terminal and is filled
It sets and is connect with oscillograph, partial pressure D.C. resistance is in series between rectifier cabinet DC voltage output end and oscillograph.
In excitation low current closed test trolley above-mentioned, rear circuit and the second pressure regulation of second switching ac voltage
It is in series with the first A.C. voltmeter between the rear circuit of device.
In excitation low current closed test trolley above-mentioned, rear circuit and the first pressure regulation of second switching ac voltage
It is in series with the second A.C. voltmeter between the rear circuit of device.
In excitation low current closed test trolley above-mentioned, the three-phase current-limiting resistance and rotor alternating current output end it
Between be in series with alternating current ammeter.
In excitation low current closed test trolley above-mentioned, the power input uses 380V three-phase and four-line alternating currents
Source, i.e. A phase, B phase, C phase and N phases.
In excitation low current closed test trolley above-mentioned, second switching ac voltage is handed over from 380V three-phase and four-lines
A phases in galvanic electricity source are connected with N.
Compared with prior art, this programme is defeated using three groups of ac output voltages, one group of DC input voitage, a group rotor
Go out electric current, two adjustable transformers, wherein synchronous AC voltage can be opened with rectifier cabinet alternating voltage differential seat angle by the first conversion
It closes and the mode of connection of the second change-over switch adjustment corner transformer is adjusted for the mode of connection of Y/ △ -11 or Y/ △ -1 modes
Section is suitble to the excitation excitation system of the different synchronous modes of connection, applied widely, highly practical；And the supply in entire scheme
Power supply only needs all the way, i.e. three-phase four-wire system 380V exchanges, wiring is few, reduces operation complexity and test connection error probability, carries
Height experiment correctness.Suitable for excitation low current closed test, wherein field regulator uses excitation voltage closed loop mode, excitation
Adjuster makes silicon controlled rectifier circuit lead according to the silicon-controlled Trigger Angle (adjuster participation closed-loop control) of the given control of voltage
Logical, DC side the output phase answers DC voltage when exchange side input ac voltage, can check dynamic waveform and adjustment process；And it is straight
It connects and each test parts current-voltage measurement step is intuitively simply avoided, together using alternating current ammeter, voltmeter display reading
When avoid and measure the risk brought, improve the safety of experiment.Therefore, the present invention is tried suitable for excitation low current closed loop
It tests, has the characteristics that use scope is wide, improves the safety of experiment, improves experiment correctness.
Description of the drawings
Fig. 1 is the circuit diagram of the present invention.
Label in attached drawing be：1, power input；2, the first switching ac voltage；3, the first pressure regulator；4, timed delivery
Flow voltage output end；5, three-phase current-limiting resistance；6, rotor alternating current output end；7, corner transformer；8, the first change-over switch；
9, the second change-over switch；10, rectifier cabinet ac voltage output；11, the second pressure regulator；12, buckling ac voltage output；
13, the second switching ac voltage；14, isolating transformer；15, oscillograph；16, rectifier cabinet DC voltage output end；17, partial pressure is straight
Leakage resistance；18, the first A.C. voltmeter；19, the second A.C. voltmeter；20, alternating current ammeter.
Specific implementation mode
The present invention is further illustrated with reference to the accompanying drawings and examples, but be not intended as to the present invention limit according to
According to.
Embodiment.
As shown in Figure 1, excitation low current closed test trolley, including power input 1, the power input 1 is successively
It is connect with synchronous AC voltage output end 4 through the first switching ac voltage 2, the first pressure regulator 3, the rear circuit of the first pressure regulator 3
It is connect with rotor alternating current output end 6 through three-phase current-limiting resistance 5, the rear circuit of the first pressure regulator 3 is also successively through corner transformation
Device 7, the first change-over switch 8, the second change-over switch 9 are connect with rectifier cabinet ac voltage output 10；The power input 1 according to
It is secondary to be connect with buckling ac voltage output 12 through the first switching ac voltage 2, the second pressure regulator 11, the power input 1
Also connected successively through the second switching ac voltage 13, isolating transformer 14, oscillograph 15 and rectifier cabinet DC voltage output end 16.
The rectifier cabinet DC voltage output end 16 is connect by terminal introducing device with oscillograph 15, rectifier cabinet direct current
Partial pressure D.C. resistance 17 is in series between pressure output end 16 and oscillograph 15.
It is in series with the first friendship between the rear circuit of second switching ac voltage 13 and the rear circuit of the second pressure regulator 11
Ampere-voltage meter 18.
Second is in series between the rear circuit of second switching ac voltage 13 and the rear circuit of the first pressure regulator 3 to exchange
Voltmeter 19.
It is in series with alternating current ammeter 20 between the three-phase current-limiting resistance 5 and rotor alternating current output end 6.
The power input 1 uses 380V three-phase and four-line AC powers, i.e. A phase, B phase, C phase and N phases.
Second switching ac voltage 13 with from 380V three-phase and four-line AC powers A phases and N be connected.
The operation principle of the present invention：
The circuit that the present invention mainly uses is including the use of the first pressure regulator 3, the second pressure regulator 11 and corner transformer 7 to electricity
Potential source carries out voltage adjusting and phase angular transformation, in the input of power input 1 380V three-phase alternating-current supplies all the way, i.e., A phases, B phases,
C phases and N phases, wiring is few, reduces operation complexity and test connection error probability, improves experiment correctness；By the first exchange
After voltage switch 2, required voltage output is adjusted by the first pressure regulator 3 respectively and gives synchronous AC voltage, passes through the second pressure regulator
Voltage needed for 11 adjustment is inputted from the output of buckling ac voltage output 12 as field regulator set end voltage；First pressure regulation
Circuit exports respective rotor alternating current to adjustment of field excitation through three-phase current-limiting resistance 5 from rotor alternating current output end 6 after device 3
Device, circuit is also suitble to through corner transformer 7 and the first change-over switch 8, the cooperation selection of the second change-over switch 9 after the first pressure regulator 3
Level angle Y/ △ -11 or Y/ △ -1 from rectifier cabinet ac voltage output 10 export, as rectifier cabinet alternating voltage input,
It is suitble to the excitation excitation system of the different synchronous modes of connection, it is applied widely, highly practical.
The power supply of the first A.C. voltmeter 18 and the second A.C. voltmeter 19 in circuit is pressed off by the second alternating current
It closes 13 and introduces supply, the upper level power supply of the second switching ac voltage 13 is derived from the A phases and N of 220V in 380V three-phase alternating-current supplies
Phase.Oscillograph 15 is also higher for the quality requirement of power supply because its precision is higher, therefore oscillograph 15 passes through isolating transformer
14 and second switching ac voltage 13 introduce supply.The voltage of the input and output of the present invention, current-mode analog quantity can meet hair
All additional conditions of motor excitation system low current experiment, while there is the meter monitored in real time to voltage, the magnitude of current,
Directly read, it is intuitive simple, each test parts current-voltage measurement step is avoided, while avoiding the risk for measuring and bringing,
Improve the safety of experiment.Rectifier cabinet DC voltage output end 16 is connected by terminal introducing device with the probe of oscillograph 15
It connects, partial pressure D.C. resistance 17 is connected on as high-power resistance between rectifier cabinet DC voltage output end 16 and oscillograph 15.
In the experiment of low current voltage close loop, field regulator uses voltage close loop pattern (identical as normal operating mode),
Adjuster makes silicon controlled rectifier circuit lead according to the silicon-controlled Trigger Angle (adjuster participation closed-loop control) of the given control of voltage
Logical, DC side the output phase answers DC voltage when exchange side input ac voltage, can check dynamic waveform and adjustment process.The present invention
It is designed using closed composition, saves space, keep testing ground neatly orderly；Substantially reduce excitation low current after teams and groups overhaul
It tests the required time, mitigates the workload of teams and groups personnel, improve working efficiency.
The model LW12-16/4.3293.11 of wherein the first change-over switch 8, the second change-over switch 9, corner transformer 7
Using 380V/100V, isolating transformer 14 uses NR-G423,170VA, 220V/190V, the first pressure regulator 3 and the second pressure regulator
11 model is TSGC2-3KVA, and the first A.C. voltmeter 18 and the second A.C. voltmeter 19 use PZ194U-9XY3/
150V/AC220V, alternating current ammeter 20 use PA194I-9XY3/5A/AC220V, the model GOS-6021 of oscillograph 15, three
Phase current-limiting resistance 5 is using the resistance of three 150W/60-80 Ω, and partial pressure D.C. resistance 17 is using 150W/50-60 Ω.
Claims (7)
1. excitation low current closed test trolley, it is characterised in that：Including power input (1), the power input (1) according to
It is secondary to be connect with synchronous AC voltage output end (4) through the first switching ac voltage (2), the first pressure regulator (3), the first pressure regulator
(3) rear circuit is connect through three-phase current-limiting resistance (5) with rotor alternating current output end (6), the rear circuit of the first pressure regulator (3)
Also successively through corner transformer (7), the first change-over switch (8), the second change-over switch (9) and rectifier cabinet ac voltage output
(10) it connects；The power input (1) exchanges through the first switching ac voltage (2), the second pressure regulator (11) with buckling successively
Voltage output end (12) connects, and the power input (1) is also successively through the second switching ac voltage (13), isolating transformer
(14), oscillograph (15) and rectifier cabinet DC voltage output end (16) connection.
2. excitation low current closed test trolley according to claim 1, it is characterised in that：The rectifier cabinet DC voltage
Output end (16) is connect by terminal introducing device with oscillograph (15), rectifier cabinet DC voltage output end (16) and oscillograph
(15) partial pressure D.C. resistance (17) is in series between.
3. excitation low current closed test trolley according to claim 1, it is characterised in that：Second alternating current presses off
It is in series with the first A.C. voltmeter (18) between the rear circuit and the rear circuit of the second pressure regulator (11) of pass (13).
4. excitation low current closed test trolley according to claim 1, it is characterised in that：Second alternating current presses off
It is in series with the second A.C. voltmeter (19) between the rear circuit and the rear circuit of the first pressure regulator (3) of pass (13).
5. excitation low current closed test trolley according to claim 1, it is characterised in that：The three-phase current-limiting resistance
(5) alternating current ammeter (20) is in series between rotor alternating current output end (6).
6. excitation low current closed test trolley according to claim 1, it is characterised in that：The power input (1)
Using 380V three-phase and four-line AC powers, i.e. A phase, B phase, C phase and N phases.
7. excitation low current closed test trolley according to claim 6, it is characterised in that：Second alternating current presses off
Close (13) with from 380V three-phase and four-line AC powers A phases and N be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810592285.0A CN108802527B (en) | 2018-06-11 | 2018-06-11 | Excitation small current closed loop test trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810592285.0A CN108802527B (en) | 2018-06-11 | 2018-06-11 | Excitation small current closed loop test trolley |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108802527A true CN108802527A (en) | 2018-11-13 |
| CN108802527B CN108802527B (en) | 2020-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810592285.0A Active CN108802527B (en) | 2018-06-11 | 2018-06-11 | Excitation small current closed loop test trolley |
Country Status (1)
| Country | Link |
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| CN (1) | CN108802527B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111879991A (en) * | 2020-07-13 | 2020-11-03 | 中国水利水电第十二工程局有限公司 | Test device for primary through-flow secondary pressurization and excitation small current |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5785529A (en) * | 1980-09-23 | 1982-05-28 | Bosch Gmbh Robert | Overvoltage protecting device |
| CN200990560Y (en) * | 2006-12-12 | 2007-12-12 | 乳源瑶族自治县东阳光化成箔有限公司 | Wide voltage range power supply device |
| CN103605012A (en) * | 2013-10-23 | 2014-02-26 | 国家电网公司 | Excitation system test trolley |
| CN104793028A (en) * | 2015-04-30 | 2015-07-22 | 中国一冶集团有限公司 | Three-phase multifunctional test power supply device and test method thereof |
| CN205725544U (en) * | 2016-06-16 | 2016-11-23 | 凯工电气（苏州）有限公司 | Brushless generator compound rectifier excitation system |
-
2018
- 2018-06-11 CN CN201810592285.0A patent/CN108802527B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5785529A (en) * | 1980-09-23 | 1982-05-28 | Bosch Gmbh Robert | Overvoltage protecting device |
| CN200990560Y (en) * | 2006-12-12 | 2007-12-12 | 乳源瑶族自治县东阳光化成箔有限公司 | Wide voltage range power supply device |
| CN103605012A (en) * | 2013-10-23 | 2014-02-26 | 国家电网公司 | Excitation system test trolley |
| CN104793028A (en) * | 2015-04-30 | 2015-07-22 | 中国一冶集团有限公司 | Three-phase multifunctional test power supply device and test method thereof |
| CN205725544U (en) * | 2016-06-16 | 2016-11-23 | 凯工电气（苏州）有限公司 | Brushless generator compound rectifier excitation system |
Non-Patent Citations (1)
| Title |
|---|
| 王斌等: "浅议SAVR-2000型励磁系统小电流调试", 《中国水能及电气化》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111879991A (en) * | 2020-07-13 | 2020-11-03 | 中国水利水电第十二工程局有限公司 | Test device for primary through-flow secondary pressurization and excitation small current |
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| Publication number | Publication date |
|---|---|
| CN108802527B (en) | 2020-10-27 |
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