CN102255271A - Low-voltage rectifying device - Google Patents
Low-voltage rectifying device Download PDFInfo
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- CN102255271A CN102255271A CN2011101906344A CN201110190634A CN102255271A CN 102255271 A CN102255271 A CN 102255271A CN 2011101906344 A CN2011101906344 A CN 2011101906344A CN 201110190634 A CN201110190634 A CN 201110190634A CN 102255271 A CN102255271 A CN 102255271A
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Abstract
The invention discloses a low-voltage rectifying device, comprising a switch (1), a three-phase analog voltage transformer (2), a voltage regulator (3) and a boosting transformer (4), wherein an input end of the switch (1) is connected with an AC (alternating current) three-phase 380V power supply; a voltage output end of the switch (1) is connected with a voltage input end of the voltage regulator (3); a voltage output end of the voltage regulator (3) is connected with a voltage input end of the boosting transformer (4); and the three-phase analog voltage transformer (2) is connected with the AC three-phase 380V power supply by the input end of the switch (1). The low-voltage rectifying device can test a DC (direct current) de-icing device conveniently and ensures the normal operation of the DC de-icing device during circuit icing. The low-voltage rectifying device is convenient to move and use for field test, and is simple in structure and operation processes and low in cost.
Description
Technical field
The present invention relates to the power equipment field tests, especially to the test of DC de-icing device.
Background technology
DC de-icing device belongs to a kind of novel device, the DC ice melting technology mainly is meant when circuit icing phenomenon is serious, icing circuit two ends are disconnected with major network, and with the line end short circuit, insert DC power supply at the circuit head end simultaneously, make it to form a loop, thereby the utilization circuit makes the ice sheet that adheres on the line melt to come off by big electric current heating alleviates the burden of circuit, and then prevent breaking of circuit and collapsing of iron tower, ensure transmission line safety, after finishing the deicing task, the excision of DC ice melting equipment can be returned to normal condition.Because DC de-icing device just puts into operation during the power circuit icing in winter, perhaps puts into operation every year several times, does not perhaps move in several years, its most of the time all is in cold standby state.For guaranteeing that DC de-icing device can both normally move during each circuit icing, must whether can normally move with Authentication devices regularly checking at ordinary times and preventive trial.Because DC de-icing device belongs to a kind of novel device, should carry out which preventive trial at DC de-icing device, adopt which type of testing equipment also in the process of groping; Test to DC de-icing device is to test by cutting off the transmission of electricity circuit at the transmission line scene at present, and this method need have a power failure to station equipment, not only influences the normal operation of transmission line, causes unnecessary economic loss; And every DC de-icing device need be removed to the transmission line scene and be tested, very inconvenient, increase testing cost.
Summary of the invention
The technical problem to be solved in the present invention: a kind of simple light lower pressure rectifier device is provided, DC de-icing device is tested, need deliver to the variety of issue that the transmission line on-the-spot test produces to solve DC de-icing device.
Technical solution of the present invention: the lower pressure rectifier device comprises switch, three-phase simulation voltage transformer, voltage regulator and the change of boosting; Switch input terminal connects and exchanges three-phase 380V power supply; Switching voltage output termination voltage regulator voltage input end; The voltage regulator voltage output end connects the time variant voltage input that boosts; The three-phase simulation voltage transformer connects from switch input terminal and exchanges three-phase 380V power supply.
Switch is the three-phase alternating current air switch; Voltage regulator is the 380/430V specification; Boost and become the 400/1000V specification; The three-phase simulation voltage transformer is the 380V/100V specification.
Beneficial effect of the present invention:
According to the present invention program, can easily test DC de-icing device, guarantee that it normally puts into operation during the circuit icing, prevent that the sleet freezing weather from bringing loss to electrical network; Structure of the present invention and operating procedure are simple, do not need station equipment is had a power failure, reduced the loss that needs power failure to bring for testing to DC de-icing device, equipment is installed in the control cubicle, be convenient to move and the field test use, do not need to move DC de-icing device.
Description of drawings:
Fig. 1 is a principle of the invention schematic diagram.
Embodiment:
Lower pressure rectifier device and equipment under test see that Fig. 1 comprises switch 1, three-phase simulation voltage transformer 2, voltage regulator 3, change 4, tested DC de-icing device 5, resistance 6 and oscilloscope 7 boost.
Switch 1 input termination exchanges three-phase 380V, voltage regulator 3 voltage input ends connect switch 1 voltage output end, change 4 voltage input ends that boost connect voltage regulator 3 voltage output ends, the voltage input end of tested DC de-icing device 5 connects to boost and becomes 4 voltage output ends, and resistance 6, oscilloscope 7 connect A+, the B-end of tested DC de-icing device 5; Three-phase simulation voltage transformer 2 exchanges three-phase 380V from switch 1 input termination.
Switch 1 is the three-phase alternating current air switch, and voltage regulator 3 is the 380/430V specification; The change 4 of boosting is the 400/1000V specification, and three-phase simulation voltage transformer 2 is the 380V/100V specification; Resistance 6 is 100 ohm/500 watts.
Input: 380V three-phase alternating-current supply in standing
The tested output of DC de-icing device 5 direct currents A+, B-terminate to the positive and negative terminal of resistance 6 loads and oscilloscope 7.
Output: the 100V three-phase alternating voltage is as the control device synchronizing voltage.
The 500V three-phase alternating-current supply is as the input power supply of tested DC de-icing device 5 rectifying valves.
Start the water system of tested DC de-icing device 5, check that the water system operation is normal.
The circuit breaker of tested DC de-icing device 5 place ac bus (10kV bus or 35kV) is in the branch position, and the ground cutter on the ac bus is opened; The switching isolation switch of DC de-icing device 5 DC side is in branch position state; 1,3,5,7 the weak point of the synchronizing voltage terminal 1K4.X1 of PCP screen cabinet is opened in flakes;
According to the test connection of finishing shown in Figure 1, check the phase sequence correctness.The output of three-phase simulation voltage transformer 2 is connected to the lower end of 1,3,5,7 terminals of PCP screen cabinet terminal 1K4.X1, also is the ABCN end; Boost and become the power input that 4 output is received DC de-icing device 5; Ohmic load is received direct current outlet A+, B-end;
Before system's energising,, check synchronizing voltage phase sequence correctness at OWS interface record ripple; Check that the 380/430V voltage regulator makes zero; Confirm that DC de-icing device converter valve three-phase input side ground connection disconnecting link separates; Select the lower pressure rectifier test at the OWS interface.(put 1 with RFO this moment, and the angle of synchronizing voltage needs to revise, and protection is withdrawed from);
System's energising: run jointly and close 1, slowly regulate voltage regulator 3, change 4 output voltages that will boost are adjusted to about 500V; The synchronous voltage signal of control system needs is provided by the three-phase simulation voltage transformer simultaneously; With the load resistance of 100 ohm/500 watts resistance as DC de-icing device; Selecting trigger angle at the OWS interface is 90 degree, input unlock command, the waveform of recording oscillometer and reading.Revise trigger angle (selecting 60,30) then, the waveform of recording oscillometer and reading at the interface.Also can trigger the record ripple at the OWS interface, the voltage waveform that produces on the load resistance is surveyed waveform with institute and typical waveform compares.
By observing under different trigger angle, the voltage waveform that produces on the load resistance can be tested the correctness of tested DC de-icing device 5 equipment and controlled function; Check and trigger control signal is connected to each thyristor TCU unit of valve group from the control flow cabinet by optical fiber/cable correctness; Check the correctly conducting under trigger impulse control of each thyristor element; Check that can getting of converter valve thyristor can, trigger the loop and correctly work.
By various controlled function and the device quality that the present invention can conveniently test DC de-icing device 5, it is carried out comprehensive assessment, guarantee that DC de-icing device 5 can put into operation at any time.
Claims (2)
1. a lower pressure rectifier device comprises switch (1), three-phase simulation voltage transformer (2), voltage regulator (3) and the change (4) of boosting; It is characterized in that: switch (1) input termination exchanges three-phase 380V power supply; Switch (1) voltage output end connects voltage regulator (3) voltage input end; Voltage regulator (3) voltage output end connects change (4) voltage input end that boosts; Three-phase simulation voltage transformer (2) exchanges three-phase 380V power supply from switch (1) input termination.
2. according to the described lower pressure rectifier device of claim 1, it is characterized in that: switch (1) is the three-phase alternating current air switch; Voltage regulator (3) is the 380/430V specification; The change (4) of boosting is the 400/1000V specification; Three-phase simulation voltage transformer (2) is the 380V/100V specification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101906344A CN102255271A (en) | 2011-07-08 | 2011-07-08 | Low-voltage rectifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101906344A CN102255271A (en) | 2011-07-08 | 2011-07-08 | Low-voltage rectifying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102255271A true CN102255271A (en) | 2011-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101906344A Pending CN102255271A (en) | 2011-07-08 | 2011-07-08 | Low-voltage rectifying device |
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| CN (1) | CN102255271A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590664A (en) * | 2012-02-08 | 2012-07-18 | 湖南省电力公司科学研究院 | Low-voltage large-current testing platform of direct-current ice melting device |
| CN102707172A (en) * | 2012-06-01 | 2012-10-03 | 湖南省电力公司科学研究院 | Test device for simulating icing of power transmission line |
| CN104849655A (en) * | 2015-04-10 | 2015-08-19 | 国家电网公司 | Heavy current testing device and method for extra-high voltage deicing isolating switch |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01202110A (en) * | 1988-02-05 | 1989-08-15 | Hitachi Ltd | Ice and snow removing method for transmission line and its device |
| CN2792015Y (en) * | 2004-12-24 | 2006-06-28 | 上海电器科学研究所（集团）有限公司 | High-current combined generator |
-
2011
- 2011-07-08 CN CN2011101906344A patent/CN102255271A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01202110A (en) * | 1988-02-05 | 1989-08-15 | Hitachi Ltd | Ice and snow removing method for transmission line and its device |
| CN2792015Y (en) * | 2004-12-24 | 2006-06-28 | 上海电器科学研究所（集团）有限公司 | High-current combined generator |
Non-Patent Citations (1)
| Title |
|---|
| 范瑞祥等: "《江西电网移动式直流融冰装置设计及其系统试验》", 《电力系统自动化》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590664A (en) * | 2012-02-08 | 2012-07-18 | 湖南省电力公司科学研究院 | Low-voltage large-current testing platform of direct-current ice melting device |
| CN102707172A (en) * | 2012-06-01 | 2012-10-03 | 湖南省电力公司科学研究院 | Test device for simulating icing of power transmission line |
| CN102707172B (en) * | 2012-06-01 | 2014-10-08 | 湖南省电力公司科学研究院 | Test device for simulating icing of power transmission line |
| CN104849655A (en) * | 2015-04-10 | 2015-08-19 | 国家电网公司 | Heavy current testing device and method for extra-high voltage deicing isolating switch |
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Application publication date: 20111123 |