CN202634303U - Rectifying bridge parallel direct-current ice melting device capable of automatically equalizing flow - Google Patents
Rectifying bridge parallel direct-current ice melting device capable of automatically equalizing flow Download PDFInfo
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- CN202634303U CN202634303U CN 201220256030 CN201220256030U CN202634303U CN 202634303 U CN202634303 U CN 202634303U CN 201220256030 CN201220256030 CN 201220256030 CN 201220256030 U CN201220256030 U CN 201220256030U CN 202634303 U CN202634303 U CN 202634303U
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- ice melting
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Abstract
The utility model provides a rectifying bridge parallel direct-current ice melting device capable of automatically equalizing a flow, which is provided with an automatic flow equalizing controller (1). The automatic flow equalizing controller (1) is connected with at least two adjustable impedors (2). The adjustable impedors (2) are connected with a three-phase rectifying bridge (3). The three-phase rectifying bridge (3) is connected with a direct-current sensor (4); and the direct-current sensor (4) is connected with the automatic flow equalizing controller (1). In a use process, the adjustable impedors (2) of the device are externally connected with a power supply. The device has the advantages that 1), the automatic flow equalizing of the rectifying bridge parallel direct-current ice melting device is realized when an ice melting current changing range is larger and the safety of the equipment is guaranteed; 2), the flow equalizing effect is good and an output current error of each rectifying bridge is controlled within 5%; and 3), a modularized design is adopted so that a single set of the device can be used, and a plurality of sets of the devices can be used, so that the applicable ice melting range is improved.
Description
Technical field
The utility model belongs to the electrical engineering technical field, relates in particular to a kind of rectifier bridge parallel connection direct deicing device of automatic current equalizing.
Background technology
In recent years, China's electric power system ice damage outburst is frequent, and the transmission line broken string of falling tower phenomenon is serious, has brought enormous economic loss to China, has also had a strong impact on the people's ordinary production and life simultaneously.
For resisting the ice damage of transmission line, China has developed the ice-melt that a large amount of DC de-icing devices is used for transmission line at present, to guarantee the safe and stable operation of electrical network.The ice melting current required because of transmission line is bigger, and the DC de-icing device rectifier is limited owing to the rectifying tube manufacture level, and single three-phase commutation bridge can't be exported big electric current, needs a plurality of rectifier bridges parallel connections to realize the output of the big electric current of ice-melts.At this moment, if each rectifier bridge output current is uneven, will cause device damage accidents such as rectifier bridge heating sharp increase, components and parts damage.At present; The DC de-icing device of domestic rectifier bridge parallel connection generally adopts the method for rectifier bridge direct current output series connection interphase reactor to realize the current-sharing between each rectifier bridge; But only changing at average anode current, this method can guarantee the current-sharing between each rectifier bridge when little; And the lead ice melting current to various models is inconsistent during power line DC ice-melting; The average anode current excursion is bigger, and the method for series connection interphase reactor is difficult to be suitable for the rectifier bridge current-sharing effect under all line style ice-melt conditions.Therefore, can be suitable for the ice-melt of all line styles for guaranteeing the parallelly connected DC de-icing device of rectifier bridge, when promptly required ice melting current excursion was big, the automatic current equalizing of rectifier bridge was a urgent problem.
The utility model content
The technical problem that the utility model will solve is: to the power line DC ice-melting device that adopts the rectifier bridge parallel connection at present; Utilize interphase reactor can't be suitable for the defective of rectifier bridge current-sharing effect under all ice-melt conditions; A kind of rectifier bridge parallel connection direct deicing device of automatic current equalizing is provided; This device is realized the current-sharing between each rectifier bridge automatically when the DC ice melting current excursion is big, enlarging application range is guaranteed the current-sharing effect under various forms, the various ice melting current state.
The technical solution of the utility model is; The rectifier bridge parallel connection direct deicing device of said a kind of automatic current equalizing, referring to Fig. 1, it is as shown in Figure 1; Have an automatic current equalizing controller 1, the signal output part of this automatic current equalizing controller 1 connects at least two adjustable impedance 2 respectively.Said each adjustable impedance 2 is connected with the signal output part of said automatic current equalizing controller 1 respectively by its signal input part.The signal output part of said adjustable impedance 2 then is connected with a three-phase commutation bridge 3, and this three-phase commutation bridge 3 is connected by the signal output part of its signal input part with said adjustable impedance 2.And the signal output part of this three-phase commutation bridge 3 also is connected with a direct current transducer 4.This direct current transducer 4 is connected the cathode output end of said three-phase commutation bridge 3 by its signal input part.The signal output part of this direct current transducer 4 is connected with the signal input part of above-mentioned automatic current equalizing controller 1.
When the rectifier bridge parallel connection direct deicing device of this a kind of automatic current equalizing of the utility model of forming thus uses, by the input external AC power supply of above-mentioned each adjustable impedance 2 of this device.The positive pole of the external direct current bus of cathode output end parallel connection of each three-phase commutation bridge 3 that is connected with each adjustable impedance 2 by the above-mentioned of this device.The negative pole of the external direct current bus of output parallel connection of the direct current transducer 4 that is connected with each three-phase commutation bridge 3 by the above-mentioned of this device.
In the said structure of the utility model, the effect of adjustable impedance 2 provides the size that the output current of three-phase commutation bridge 3 is adjusted in different big or small impedances; The effect of three-phase commutation bridge 3 is to convert alternating current into direct current output; The effect of direct current transducer 4 is average anode currents of measuring three-phase commutation bridge 3; And the effect of automatic current equalizing controller 1 is the size according to the three-phase commutation bridge output current of direct current transducer 4 measurements; Through analyzing its error; Automatically regulate the impedance magnitude of corresponding adjustable impedance 2; Thereby regulate the size of the direct current of three-phase commutation bridge 3 outputs, realize the balance of each three-phase commutation bridge 3, guarantee that each output current error is in 5%.
The beneficial effect of the utility model is:
1), can realize the automatic current equalizing of DC de-icing device when the ice melting current excursion is big of rectifier bridge parallel connection, guaranteed the safety of equipment;
2), current-sharing is effective, each rectifier bridge output current ERROR CONTROL is in 5%;
3), adopt modularized design, so this device can singly overlap use, also can overlap simultaneously more and use, with the raising ice-melt scope of application.
Description of drawings
Fig. 1 is the structured flowchart of a specific embodiment of the utility model, is denoted as among the figure:
1-automatic current equalizing controller,
2-adjustable impedance,
3-three-phase commutation bridge,
4-direct current transducer.
Embodiment
Referring to Fig. 1, shown in Figure 1 is concrete embodiment of rectifier bridge parallel connection direct deicing device of a kind of automatic current equalizing of the utility model.This embodiment has on an automatic current equalizing controller 1, this automatic current equalizing controller 1 and is connected to three adjustable impedance 2; Each adjustable impedance 2 connects a three-phase commutation bridge 3; Each three-phase commutation bridge 3 connects a direct current transducer 4, so three-phase commutation bridge 3 has three, and direct current transducer 4 also has three.The automatic current equalizing controller 1 of this embodiment adopts Hunan China to economize the HCJLQ-10 type automatic current equalizing controller that the pure Power Tech Corp. Inc. of remittance produces; Adjustable impedance 2 adopt Chinese Hubei to continue KTZ type adjustable impedance that new extraordinary electric limited company produces; Adopt Hunan China to economize the HCZLQ-10 type diode three-phase commutation bridge that the pure Power Tech Corp. Inc. of remittance produces; Direct current transducer 4 adopts the HDC type DC current sensor that rising sun electronics technology Co., Ltd produces in the Nanjing of China.An above-mentioned automatic current equalizing controller 1, three adjustable impedance 2, three three-phase commutation bridges 3 and three direct current transducers 4; By above-mentioned technical solution; Reference connection shown in Figure 1, the wherein signal input part of three adjustable impedance 2 of the signal output part of automatic current equalizing controller 1 parallel connection.The signal output part of each adjustable impedance 2 connects the signal input part of three-phase commutation bridge 3.The cathode output end of each three-phase commutation bridge 3 connects the signal input part of direct current transducer 4.The signal output part of direct current transducer 4 then is connected with the signal input part of above-mentioned automatic current equalizing controller 1.
The rectifier bridge parallel connection direct deicing device of a kind of automatic current equalizing of said structure, it is respond well to be proved to be current-sharing through analogue test and simulation calculation, reaches designing requirement fully.
Claims (1)
1. the rectifier bridge parallel connection direct deicing device of an automatic current equalizing; It is characterized in that; It has an automatic current equalizing controller (1); The signal output part of this automatic current equalizing controller (1) connects at least two adjustable impedance (2) respectively; Said each adjustable impedance (2) is connected with the signal output part of said automatic current equalizing controller (1) respectively by its signal input part; The signal output part of said adjustable impedance (2) then is connected with a three-phase commutation bridge (3), and this three-phase commutation bridge (3) is connected by the signal output part of its signal input part with said adjustable impedance (2), and the signal output part of this three-phase commutation bridge (3) also is connected with a direct current transducer (4); This direct current transducer (4) connects the cathode output end of said three-phase commutation bridge (3) by its signal input part, and the signal output part of this direct current transducer (4) is connected with the signal input part of above-mentioned automatic current equalizing controller (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220256030 CN202634303U (en) | 2012-06-01 | 2012-06-01 | Rectifying bridge parallel direct-current ice melting device capable of automatically equalizing flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220256030 CN202634303U (en) | 2012-06-01 | 2012-06-01 | Rectifying bridge parallel direct-current ice melting device capable of automatically equalizing flow |
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| Publication Number | Publication Date |
|---|---|
| CN202634303U true CN202634303U (en) | 2012-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220256030 Expired - Fee Related CN202634303U (en) | 2012-06-01 | 2012-06-01 | Rectifying bridge parallel direct-current ice melting device capable of automatically equalizing flow |
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| CN (1) | CN202634303U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102694475A (en) * | 2012-06-01 | 2012-09-26 | 湖南省电力公司科学研究院 | Automatic current-sharing DC ice melting device with parallelly-connected rectifier bridges |
| CN103166161A (en) * | 2013-04-15 | 2013-06-19 | 都匀供电局 | Method and device for adjusting output impedance of ice melting reactor |
-
2012
- 2012-06-01 CN CN 201220256030 patent/CN202634303U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102694475A (en) * | 2012-06-01 | 2012-09-26 | 湖南省电力公司科学研究院 | Automatic current-sharing DC ice melting device with parallelly-connected rectifier bridges |
| CN103166161A (en) * | 2013-04-15 | 2013-06-19 | 都匀供电局 | Method and device for adjusting output impedance of ice melting reactor |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: INSTITUTE OF ELECTRIC POWER SCIENCES OF STATE GRID Free format text: FORMER OWNER: HU'NAN XIANGDIAN TRIAL RESEARCH TECHNOLOGY CO., LTD. STATE GRID CORPORATION OF CHINA Effective date: 20140624 Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: INSTITUTE OF ELECTRIC POWER SCIENCES OF STATE GRID HUNAN ELECTRIC POWER COMPANY Effective date: 20140624 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee |
Owner name: INSTITUTE OF ELECTRIC POWER SCIENCES OF STATE GRID Free format text: FORMER NAME: HU'NAN ELECTRIC POWER COMPANY RESEARCH ACADEMY |
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| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 410007 CHANGSHA, HUNAN PROVINCE TO: 100031 XICHENG, BEIJING |
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| CP01 | Change in the name or title of a patent holder |
Address after: 410007 No. 79 hydroelectric power street, east pond, Hunan, Changsha Patentee after: STATE GRID HUNAN ELECTRIC POWER COMPANY Research Institute Patentee after: XIANG-ELECTRIC EXPERIMENT AND RESEARCH TECHNOLOGY COMPANY OF HUNAN PROVINCE Patentee after: State Grid Corporation of China Address before: 410007 No. 79 hydroelectric power street, east pond, Hunan, Changsha Patentee before: SCIENCE RESEARCH INSTITUTE OF HUNAN ELECTRIC POWER Co.,Ltd. Patentee before: XIANG-ELECTRIC EXPERIMENT AND RESEARCH TECHNOLOGY COMPANY OF HUNAN PROVINCE Patentee before: State Grid Corporation of China |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140624 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: STATE GRID HUNAN ELECTRIC POWER COMPANY Research Institute Address before: 410007 No. 79 hydroelectric power street, east pond, Hunan, Changsha Patentee before: STATE GRID HUNAN ELECTRIC POWER COMPANY Research Institute Patentee before: XIANG-ELECTRIC EXPERIMENT AND RESEARCH TECHNOLOGY COMPANY OF HUNAN PROVINCE Patentee before: State Grid Corporation of China |
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| ASS | Succession or assignment of patent right |
Owner name: STATE GRID HUNAN ELECTRIC POWER COMPANY DISASTER P Free format text: FORMER OWNER: INSTITUTE OF ELECTRIC POWER SCIENCES OF STATE GRID HUNAN ELECTRIC POWER COMPANY Effective date: 20150529 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150529 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: STATE GRID HUNAN ELECTRIC POWER Co. Patentee after: STATE GRID HUNAN ELECTRIC COMPANY DISASTER PREVENTION AND REDUCTION CENTER Patentee after: STATE GRID HUNAN ELECTRIC POWER COMPANY Research Institute Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: STATE GRID HUNAN ELECTRIC POWER COMPANY Research Institute |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20190601 |