CN104377636A - Direct-current deicing rectifier - Google Patents
Direct-current deicing rectifier Download PDFInfo
- Publication number
- CN104377636A CN104377636A CN201410710907.7A CN201410710907A CN104377636A CN 104377636 A CN104377636 A CN 104377636A CN 201410710907 A CN201410710907 A CN 201410710907A CN 104377636 A CN104377636 A CN 104377636A
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- CN
- China
- Prior art keywords
- switch
- reactor
- ice melting
- connect
- rectifier bridge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/16—Devices for removing snow or ice from lines or cables
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/145—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/155—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/145—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/155—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
- H02M7/1552—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only in a biphase or polyphase arrangement
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/145—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/155—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
- H02M7/1555—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with control circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/145—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/155—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
- H02M7/1555—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with control circuit
- H02M7/1557—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with control circuit with automatic control of the output voltage or current
Abstract
The invention discloses a direct-current deicing rectifier comprising a thyristor phase-controlled reactor, a direct-current deicing smoothing reactor and a switch unit. The thyristor phase-controlled reactor is connected with a three-phase alternating current system. The thyristor phase-controlled reactor allows conduction angle of a thyristor valve to be adjusted, thus equivalent inductive impedance of the thyristor valve changes continuously; the thyristor phase-controlled reactor is used for absorbing reactive power of the three-phase alternating current system. The direct-current deicing smoothing reactor connected to a rectifier bridge and an output terminal is used for reducing alternating current component of current, increasing direct current component of the current and outputting direct current power for deicing. The switch unit comprises a plurality of switches connected to the thyristor phase-controlled reactor and the direct-current deicing smoothing reactor; the switch unit is used for controlling switching operation of the thyristor phase-controlled reactor and operation of the direct-current deicing smoothing reactor.
Description
Technical field
The present invention relates to electronic circuit technology, especially, relate to a kind of DC ice melting rectifying device.
Background technology
The area such as China Central China, southwest, East China is due to geographical reason, and be easy to freezing rain and snow disaster occurs, grid equipment icing snowberg is serious, and broken string, tower, line tripping phenomenon take place frequently, and cause electrical network massive losses, some areas electrical network even suffers crushing blow.In prior art, DC ice melting equipment is usually used to carry out electrical network ice-melt.But, due to ice damage occur time and frequency all less, the DC ice melting equipment most of the time does not work, and causes hardware device to waste.
Not work the problem causing hardware device to waste for the DC ice melting equipment most of the time, not yet have effective solution at present.
Summary of the invention
Not work the problem causing hardware device to waste for the DC ice melting equipment most of the time in prior art, the object of the invention is to propose a kind of DC ice melting rectifying device, DC ice melting equipment switching working mode at work can be made, improve utilization rate of equipment and installations.
Based on above-mentioned purpose, technical scheme provided by the invention is as follows:
According to an aspect of the present invention, a kind of DC ice melting rectifying device is provided.
Thyristor Controlled Reactor is comprised according to DC ice melting rectifying device provided by the invention, Thyristor Controlled Reactor is connected to three-phase alternating current system, Thyristor Controlled Reactor can adjust the angle of flow of thyristor valve, make its equivalent inductive reactance consecutive variations, for absorbing the reactive power in three-phase alternating current system; DC ice melting smoothing reactor, DC ice melting smoothing reactor is connected to rectifier bridge and output, and DC ice melting smoothing reactor can reduce the alternating current component in electric current, the DC component improved in electric current, carries out ice-melt for exporting direct current power; Diverter switch group, diverter switch group comprises multiple switch, diverter switch group is connected to Thyristor Controlled Reactor and DC ice melting smoothing reactor, and diverter switch group switches in the work of Thyristor Controlled Reactor and DC ice melting smoothing reactor for controlling DC ice melting rectifying device.
Wherein, Thyristor Controlled Reactor and DC ice melting smoothing reactor comprise shared reactor; Diverter switch group switches by the opening and closing of multiple switch the annexation reconstructing and share between reactor.
It can be Six-pulse Bridge or 12 pulse rectification bridge that above-mentioned rectifier bridge comprises.
Further, DC ice melting rectifying device comprise 6 reactors, the 3 pairs of thyristors, 8 and connect three inputs, two inputs of rectifier bridge, an output of switch, three-phase alternating current system.
In a preferred embodiment, the input IN1 of rectifier bridge by and connect one end that switch GZ1 is connected to 3 reactors, the other end of 3 reactors by and company switch GZ3 is connected to output OU; The input IN2 of rectifier bridge by and connect one end that switch GZ2 is connected to other 3 reactors, the other end of other 3 reactors by and company switch GZ4 is connected to output OU; The input IN1 of rectifier bridge also pass through and connect switch GZ1 with and connect three end A, B, C that switch GS1 is connected to three-phase alternating current system; The input IN2 of rectifier bridge also pass through and connect switch GZ2 with and connect three end A, B, C that switch GS2 is connected to three-phase alternating current system; The output OU of rectifier bridge also pass through and connect switch GZ3 with and connect one end that switch GS3 is connected to 3 pairs of thyristors; The output OU of rectifier bridge also passes through and connects switch GZ4 and and connect the other end that switch GS4 is connected to 3 pairs of thyristors.
As can be seen from above, technical scheme provided by the invention shares reactor by using, and use diverter switch group to reconstruct the annexation shared between reactor, diverter switch group can control DC ice melting rectifying device and switch on demand in the work of Thyristor Controlled Reactor and DC ice melting smoothing reactor, has put forward utilization rate of equipment and installations.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structure chart of the DC ice melting rectifying device according to the embodiment of the present invention;
Fig. 2 is the overall circuit diagram of the DC ice melting rectifying device according to the embodiment of the present invention;
Equivalent circuit diagram when Fig. 3 is the Thyristor Controlled Reactor work according to the DC ice melting rectifying device of the embodiment of the present invention;
Equivalent circuit diagram when Fig. 4 is the DC ice melting smoothing reactor work according to the DC ice melting rectifying device of the embodiment of the present invention;
Fig. 5 is the equivalent circuit diagram be electrically connected according to DC ice melting smoothing reactor and two groups of Six-pulse Bridges of the DC ice melting rectifying device of the embodiment of the present invention;
Fig. 6 is the equivalent circuit diagram be electrically connected according to DC ice melting smoothing reactor and one group of 12 pulse rectification bridge of the DC ice melting rectifying device of the embodiment of the present invention.
Embodiment
Clearly understand for making the object, technical solutions and advantages of the present invention, below in conjunction with the accompanying drawing in the embodiment of the present invention, to the technical scheme in the embodiment of the present invention carry out further clear, complete, describe in detail, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain, all belongs to the scope of protection of the invention.
According to one embodiment of present invention, a kind of DC ice melting rectifying device is provided.
As shown in Figure 1, the DC ice melting rectifying device provided according to embodiments of the invention comprises:
Thyristor Controlled Reactor 11, Thyristor Controlled Reactor 11 is connected to three-phase alternating current system, and Thyristor Controlled Reactor 11 can adjust the angle of flow of thyristor valve, makes its equivalent inductive reactance consecutive variations, for absorbing the reactive power in three-phase alternating current system;
DC ice melting smoothing reactor 12, DC ice melting smoothing reactor 12 is connected to rectifier bridge and output, and DC ice melting smoothing reactor 12 can reduce the alternating current component in electric current, the DC component improved in electric current, carries out ice-melt for exporting direct current power;
Diverter switch group 13, diverter switch group 13 comprises multiple switch, diverter switch group 13 is connected to Thyristor Controlled Reactor 11 and DC ice melting smoothing reactor 12, and diverter switch group switches in Thyristor Controlled Reactor 11 with the work of DC ice melting smoothing reactor 12 for controlling DC ice melting rectifying device.
Wherein, Thyristor Controlled Reactor 11 and DC ice melting smoothing reactor 12 comprise shared reactor; Diverter switch group 13 switches by the opening and closing of multiple switch the annexation reconstructing and share between reactor.
Above-mentioned rectifier bridge can be Six-pulse Bridge or 12 pulse rectification bridge.
Further, DC ice melting rectifying device comprise 6 reactors, the 3 pairs of thyristors, 8 and connect three inputs, two inputs of rectifier bridge, an output of switch, three-phase alternating current system.
In a preferred embodiment, the input IN1 of rectifier bridge by and connect one end that switch GZ1 is connected to 3 reactors, the other end of 3 reactors by and company switch GZ3 is connected to output OU; The input IN2 of rectifier bridge by and connect one end that switch GZ2 is connected to other 3 reactors, the other end of other 3 reactors by and company switch GZ4 is connected to output OU; The input IN1 of rectifier bridge also pass through and connect switch GZ1 with and connect three end A, B, C that switch GS1 is connected to three-phase alternating current system; The input IN2 of rectifier bridge also pass through and connect switch GZ2 with and connect three end A, B, C that switch GS2 is connected to three-phase alternating current system; The output OU of rectifier bridge also pass through and connect switch GZ3 with and connect one end that switch GS3 is connected to 3 pairs of thyristors; The output OU of rectifier bridge also passes through and connects switch GZ4 and and connect the other end that switch GS4 is connected to 3 pairs of thyristors.
Technical scheme of the present invention is set forth further below according to specific embodiment.
Shown in Fig. 2 is the overall circuit diagram of DC ice melting rectifying device.As shown in Figure 2, Thyristor Controlled Reactor and DC ice melting smoothing reactor can be made up of six reactors altogether, the connected mode of six reactors reconstructs by the connected mode of control switch group point reactor, form the different topology forming Thyristor Controlled Reactor and DC ice melting smoothing reactor, reach the switching of static reactive power compensation mode of operation and ice-melt rectification mode of operation, Thyristor Controlled Reactor is for performing static reactive power compensation work, and DC ice melting smoothing reactor is for performing ice-melt rectification work.
Time under static reactive power compensation mode of operation, pull open GZ1, GZ2, GZ3, GZ4, close GS1, GS2, GS3, GS4, such six reactors and direct current system are kept apart, access SVC AC system power supply A, B, C and switch V1, V2, V3, form Thyristor Controlled Reactor, its equivalent circuit diagram as shown in Figure 3.Regulate the volume output of static reactive power compensation to meet system pressure regulating and stability contorting needs by the angle of flow changing thyristor different.
Time under ice-melt rectification mode of operation, pull open GS1, GS2, GS3, GS4, close GZ1, GZ2, GZ3, GZ4, such six reactors and SVC AC system power supply A, B, C and switch V1, V2, V3 keep apart, form DC ice melting smoothing reactor, its equivalent circuit diagram as shown in Figure 4, forms two groups of smoothing reactor groups, often group is connected by three reactors, adapts to different ice-melt rectification circuits.
When ice-melt rectification circuit form is two groups of Six-pulse Bridges and connects, two groups of smoothing reactor groups respectively as the smoothing reactor often organizing Six-pulse Bridge, as shown in Figure 5.IN1, IN2 connect a pole of two Six-pulse Bridges respectively, and OU is then and connects rear direct current output cathode, another pole of two Six-pulse Bridges, and is direct current output negative pole after connecting.
When ice-melt rectification circuit form is one group of 12 pulse rectification bridge, two groups of smoothing reactor groups are also linked to be one group of smoothing reactor, as shown in Figure 6.IN1, IN2 also connect into a pole of rectifier bridge, are exported after smoothing reactor group by OU.
In sum, by means of technique scheme of the present invention, by using shared reactor, and use diverter switch group to reconstruct the annexation shared between reactor, diverter switch group can control DC ice melting rectifying device and switch on demand in the work of Thyristor Controlled Reactor and DC ice melting smoothing reactor, has put forward utilization rate of equipment and installations.
Those of ordinary skill in the field are to be understood that: the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a DC ice melting rectifying device, comprising:
Thyristor Controlled Reactor, described Thyristor Controlled Reactor is connected to three-phase alternating current system, described Thyristor Controlled Reactor can adjust the angle of flow of thyristor valve, makes its equivalent inductive reactance consecutive variations, for absorbing the reactive power in three-phase alternating current system;
DC ice melting smoothing reactor, described DC ice melting smoothing reactor is connected to rectifier bridge and output, and described DC ice melting smoothing reactor can reduce the alternating current component in electric current, the DC component improved in electric current, carries out ice-melt for exporting direct current power;
Diverter switch group, described diverter switch group comprises multiple switch, described diverter switch group is connected to described Thyristor Controlled Reactor and described DC ice melting smoothing reactor, and described diverter switch group switches in the work of Thyristor Controlled Reactor and DC ice melting smoothing reactor for controlling DC ice melting rectifying device.
2. a kind of DC ice melting rectifying device according to claim 1, is characterized in that, described Thyristor Controlled Reactor and described DC ice melting smoothing reactor comprise shared reactor; Described diverter switch group switches by the opening and closing of multiple switch the annexation reconstructed between described shared reactor.
3. a kind of DC ice melting rectifying device according to claim 1, is characterized in that, described rectifier bridge comprises one of following: Six-pulse Bridge, 12 pulse rectification bridge.
4. a kind of DC ice melting rectifying device according to claim 3, it is characterized in that, described DC ice melting rectifying device comprise 6 reactors, the 3 pairs of thyristors, 8 and connect three inputs, two inputs of rectifier bridge, an output of switch, three-phase alternating current system.
5. a kind of DC ice melting rectifying device according to claim 4, is characterized in that, the input IN1 of described rectifier bridge by and connect one end that switch GZ1 is connected to 3 reactors, the other end of 3 reactors by and company switch GZ3 is connected to output OU; The input IN2 of described rectifier bridge by and connect one end that switch GZ2 is connected to other 3 reactors, the other end of other 3 reactors by and company switch GZ4 is connected to output OU; The input IN1 of described rectifier bridge also pass through and connect switch GZ1 with and connect three end A, B, C that switch GS1 is connected to three-phase alternating current system; The input IN2 of described rectifier bridge also pass through and connect switch GZ2 with and connect three end A, B, C that switch GS2 is connected to three-phase alternating current system; The output OU of described rectifier bridge also pass through and connect switch GZ3 with and connect one end that switch GS3 is connected to 3 pairs of thyristors; The output OU of described rectifier bridge also passes through and connects switch GZ4 and and connect the other end that switch GS4 is connected to 3 pairs of thyristors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410710907.7A CN104377636A (en) | 2014-11-28 | 2014-11-28 | Direct-current deicing rectifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410710907.7A CN104377636A (en) | 2014-11-28 | 2014-11-28 | Direct-current deicing rectifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104377636A true CN104377636A (en) | 2015-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410710907.7A Pending CN104377636A (en) | 2014-11-28 | 2014-11-28 | Direct-current deicing rectifier |
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| CN (1) | CN104377636A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101540508A (en) * | 2009-01-16 | 2009-09-23 | 中国电力科学研究院 | Reconfigurable device of static var compensation (SVC) and direct-current thawing |
| CN101673950A (en) * | 2009-10-15 | 2010-03-17 | 中电普瑞科技有限公司 | Static var compensator (SVC) and DC ice melting device and realization method thereof |
| CN103840416A (en) * | 2014-03-19 | 2014-06-04 | 南京南瑞继保电气有限公司 | Direct-current deicing and reactive compensation device and implementation method |
-
2014
- 2014-11-28 CN CN201410710907.7A patent/CN104377636A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101540508A (en) * | 2009-01-16 | 2009-09-23 | 中国电力科学研究院 | Reconfigurable device of static var compensation (SVC) and direct-current thawing |
| CN101673950A (en) * | 2009-10-15 | 2010-03-17 | 中电普瑞科技有限公司 | Static var compensator (SVC) and DC ice melting device and realization method thereof |
| CN103840416A (en) * | 2014-03-19 | 2014-06-04 | 南京南瑞继保电气有限公司 | Direct-current deicing and reactive compensation device and implementation method |
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Application publication date: 20150225 |