CN203326610U - Optical fibre communication system for static var generator - Google Patents
Optical fibre communication system for static var generator Download PDFInfo
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- CN203326610U CN203326610U CN2013203203244U CN201320320324U CN203326610U CN 203326610 U CN203326610 U CN 203326610U CN 2013203203244 U CN2013203203244 U CN 2013203203244U CN 201320320324 U CN201320320324 U CN 201320320324U CN 203326610 U CN203326610 U CN 203326610U
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- optical fiber
- master controller
- power cell
- cell circuit
- communication system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/10—Flexible AC transmission systems [FACTS]
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Abstract
The utility model discloses an optical fibre communication system for a static var generator. The optical fibre communication system comprises a master controller and power unit circuits, wherein a plurality of the power unit circuits are arranged, and two optical fibre communication devices used for performing communication in a serial synchronous communication mode are connected between the master controller and each power unit circuit. The utility model discloses an optical fibre communication system for a static var generator, which is fast in response speed and low in production cost, and capable of finishing mutual conversion between a rated capacitive reactive power and a rated inductive capacitive reactive power in an extremely short time, so as to realize compensation for an impact load.
Description
Technical field
The utility model relates to electric and electronic technical field, is specifically related to a kind of optical fiber communication system of static reacance generator.
Background technology
At present, the fast development of power electronic technology, employing is from the Static Var Compensator of commutation convertor circuit, be SVG, can realize the wide region Continuous Compensation from the perception to the capacitive reactive power, can also suppress in addition negative phase-sequence reactive current and inhibition current break that laod unbalance produces, reduce the functions such as harmonic wave, in electric power system and in the flexible transmission technology, obtained approval, SVG has become the development trend in Intelligent reactive power compensation field.
Have the four optical fiber communications of the most of employing of optical fiber communication system for SVG now, comprise that three send optical fiber, a root receiving fiber.Send in optical fiber wherein one be the unit controls order that master controller is handed down to cascade, be self check, clear fault, locking, normal output command etc., other two are used for sending the PWM level signal modulate, are used for respectively the IGBT of two brachium pontis of control unit H bridge or the turn-on and turn-off of IGCT.Receive optical fiber and be used for unit fault message, temperature and vertical compression value send master controller to.Hardware receives the light film and generally adopts HFBR2521, sends the light film and generally adopts HFBR1521.
The SVG of 10KV grade can also bear for communication IO interface and the number of fibers of Master control chip, but for direct screening chain type SVG, power unit cascade progression is many, no matter its number of fibers is all to have demonstrated from communication IO interface, number of fibers and the PCB cabling of Master control chip the restriction that adopts four optical fiber, its direct drawback is that response speed is slow, production cost is high.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and provide a kind of fast response time, the communication system of the optical fiber for static reacance generator that production cost is low, can within the extremely short time, complete the mutual conversion from specified capacitive reactive power to specified lagging reactive power, realize the compensation of impact load.
The purpose of this utility model is achieved in that a kind of optical fiber communication system of static reacance generator, comprise master controller, power cell circuit, the power cell circuit is a plurality of, it is characterized in that: be connected with two optical fiber communication devices that carry out communication with the serial synchronous communications portal between master controller and each power cell circuit.
Described two optical fiber communication devices include the optical fiber transmitting terminal and optical fiber receiving terminal, the optical fiber transmitting terminal be connected with the power cell circuit and optical fiber receiving terminal be connected with master controller, be provided with downlink optical fiber between the optical fiber transmitting terminal of master controller and the optical fiber receiving terminal of power cell circuit, between the optical fiber receiving terminal of master controller and the optical fiber transmitting terminal of power cell circuit, be provided with uplink optical fibers.
Described optical fiber hardware interface adopts the transmission light film and reception light film of pulsewidth >=20 μ s.
Compared with prior art, the utility model adopts two optical fiber communication devices that carry out communication with the serial synchronous communications portal between master controller and each power cell circuit, the information of uploading by power cell, according to transmitting the gradation of data selection position, upload, the optical fiber hardware interface is adopted to the transmission light film and reception light film of pulsewidth >=20 μ s simultaneously, can make system complete the mutual conversion from specified capacitive reactive power to specified lagging reactive power within the extremely short time, realize the compensation of impact load, guaranteed the reliable high speed of communication signal, quantity and the cost of manufacture of master controller and power cell circuit communication optical fiber have been saved, the PCB cabling layout difficulty that has reduced the communication IO interface quantity of Master control chip and caused.
The accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Fig. 2 is optical fiber send and receive hardware circuit diagram.
In figure: master controller 1, power cell circuit 1 ... N, power cell circuit 3, optical fiber transmitting terminal 31a and 32a, optical fiber receiving terminal 31b and 32b, downlink optical fiber 33, uplink optical fibers 34.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Referring to Fig. 1, a kind of optical fiber communication system of static reacance generator, comprise master controller 1 and power cell circuit 2, and power cell circuit 2 is N.Be connected with two optical fiber communication devices 3 that carry out communication with the serial synchronous communications portal between master controller 1 and each power cell circuit 2.
Two optical fiber communication devices include the optical fiber transmitting terminal 31a and optical fiber receiving terminal 31b, the optical fiber transmitting terminal 32a be connected with power cell circuit 2 and optical fiber receiving terminal 32b be connected with master controller 1.Be provided with downlink optical fiber 33 between the optical fiber receiving terminal 32b of the optical fiber transmitting terminal 31a of master controller 1 and power cell circuit 2, between the optical fiber transmitting terminal 32a of the optical fiber receiving terminal 31b of master controller 1 and power cell circuit 2, be provided with uplink optical fibers 34.
The master controller core is controlled FPGA1 and is adopted electric current directly to control, being following-up type PWM control technology carries out FEEDBACK CONTROL to the instantaneous value of current waveform, with triangle wave, carry out the direct control of electric current, thereby generate the direct control level signal of PWM, complete the generation of all cascade unit controls command words simultaneously.
Downlink optical fiber 33 adopts the serial synchronous communication with up communication optical fiber 34, can guarantee that the arrival rate of recipient's bit is consistent, and makes receiving-transmitting sides enter synchronous, the fast detecting of optical fiber communication fault.Master controller 1 is when sending serial clock to cascade power cell circuit 2, and received power element circuit 2 sends to cell failure information and temperature and the vertical compression data of master controller 1 simultaneously; Power cell circuit 2, when to master controller 1, sending serial clock, receives the direct level signal of PWM and control command that master controller 1 sends to power cell circuit 2 simultaneously.Because power cell circuit 2 sends to serial data (the over current fault position that comprises unit of master controller 1, overvoltage fault position, under-voltage fault position, the open fault position, the short trouble position, superhigh temperature fault position, the Temperature numerical of IGBT, power unit direct voltage numerical value etc.) figure place is many, if disposable all information power cell circuit 2 all transmit complete, certainly will affect the PWM driving control that master controller 1 is handed down to power cell circuit 2, therefore, the utility model is by the information of uploading of power cell circuit 2, according to transmitting the gradation of data selection position, upload, with the rapidity that guarantees that PWM drives signal to issue.
Master controller 1 sends to the data frame format of cascade power cell circuit 2 as table 1.Cascade power cell circuit 2 sends to the data frame format of master controller 1 as table 2.
Table 1:
Table 2:
After the PWM level drive signal that power cell circuit 2 is responsible for that master controller 1 is issued adds reasonable dead band delay time, IGBT or the IGCT of direct controlling and driving power cell circuit H bridge carry out the control command issued simultaneously.
Referring to Fig. 2, optical fiber input hardware interface adopts the coupler of HFBRx528 series, sends light film HFBR1528 and receives light film HFBR2528, pulsewidth >=20 μ s, to meet the fast response time of static reacance generator SVG, optical fiber must keep communication speed at a high speed.The less light film HFBR1528 forward current larger (in normal range of operation) that sends of resistance in figure, the rate of climb of signal level is faster, and transmission range is far away.
Claims (3)
1. the optical fiber communication system of a static reacance generator, comprise master controller (1), power cell circuit (2), power cell circuit (2) is a plurality of, it is characterized in that: between master controller (1) and each power cell circuit (2), be connected with the two optical fiber communication devices (3) that carry out communication with the serial synchronous communications portal.
2. according to the optical fiber communication system of claims 1 described a kind of static reacance generator, it is characterized in that described two optical fiber communication devices (3) include optical fiber transmitting terminal (31a) and the optical fiber receiving terminal (31b) be connected with master controller (1), the optical fiber transmitting terminal (32a) be connected with power cell circuit (2) and optical fiber receiving terminal (32b), be provided with downlink optical fiber (33) between the optical fiber transmitting terminal (31a) of master controller (1) and the optical fiber receiving terminal (32b) of power cell circuit (2), be provided with uplink optical fibers (34) between the optical fiber receiving terminal (31b) of master controller (1) and the optical fiber transmitting terminal (32a) of power cell circuit (2).
3. according to the optical fiber communication system of claims 1 or 2 described a kind of static reacance generator, it is characterized in that described optical fiber hardware interface adopts the transmission light film and reception light film of pulsewidth >=20 μ s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203203244U CN203326610U (en) | 2013-06-05 | 2013-06-05 | Optical fibre communication system for static var generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203203244U CN203326610U (en) | 2013-06-05 | 2013-06-05 | Optical fibre communication system for static var generator |
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| Publication Number | Publication Date |
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| CN203326610U true CN203326610U (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203203244U Expired - Fee Related CN203326610U (en) | 2013-06-05 | 2013-06-05 | Optical fibre communication system for static var generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048787A (en) * | 2015-06-09 | 2015-11-11 | 江苏镇安电力设备有限公司 | Fiber integrated communication method for multi-level cascading type high-voltage frequency converter |
-
2013
- 2013-06-05 CN CN2013203203244U patent/CN203326610U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048787A (en) * | 2015-06-09 | 2015-11-11 | 江苏镇安电力设备有限公司 | Fiber integrated communication method for multi-level cascading type high-voltage frequency converter |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20190605 |
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| CF01 | Termination of patent right due to non-payment of annual fee |