CN104950734B - Current transformer TT＆C system based on electric system high frequency carrier - Google Patents
Current transformer TT＆C system based on electric system high frequency carrier Download PDFInfo
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- CN104950734B CN104950734B CN201410112419.6A CN201410112419A CN104950734B CN 104950734 B CN104950734 B CN 104950734B CN 201410112419 A CN201410112419 A CN 201410112419A CN 104950734 B CN104950734 B CN 104950734B
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- current transformer
- carrier
- signal
- negative anodes
- wave transmitter
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Inverter Devices (AREA)
Abstract
The present invention relates to a kind of current transformer TT＆C systems based on electric system high frequency carrier, including three phase full bridge current transformer, carrier transceiver, controller, acquisition sensor, unsteady flow signal output transducer and AD converter；The three phase full bridge current transformer includes exchange side and DC side；The DC side includes DC side positive and negative anodes；The carrier transceiver includes multicarrier receiver and carrier wave transmitter；The unsteady flow signal output transducer is connect with AD converter；The carrier wave transmitter is connect with DC side positive and negative anodes, acquisition sensor and AD converter respectively；The acquisition sensor is connect with DC side；The DC side positive and negative anodes are connect with controller, multicarrier receiver and carrier wave transmitter respectively.Compared with prior art, the present invention has many advantages, such as that safe and reliable, rationally distributed, dilatation is convenient.
Description
Technical field
The present invention relates to a kind of current transformer TT＆C systems, more particularly, to a kind of unsteady flow based on electric system high frequency carrier
Device TT＆C system.
Background technology
Its main circuit of electronic power convertor is generally 2 level block of three phase full bridge current transformer, and element is generally full-control type
Power switch, control signal is using cable or optical fiber as transmission medium.Due to the low-pressure section and current transformer of controller
High-pressure section signal is not isolated, and the transmission of quotation marks is influenced so that electrical layout is unreasonable, and is difficult to realize dilatation.
Invention content
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide one kind being based on electric system
The current transformer TT＆C system of high frequency carrier.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of current transformer TT＆C system based on electric system high frequency carrier, which is characterized in that including three phase full bridge unsteady flow
Device, carrier transceiver, controller, acquisition sensor, unsteady flow signal output transducer and AD converter；The three phase full bridge becomes
It includes exchange side and DC side to flow device；The DC side includes DC side positive and negative anodes；The carrier transceiver includes carrier wave
Receiver and carrier wave transmitter；
The unsteady flow signal output transducer is connect with AD converter；The carrier wave transmitter respectively with DC side just
Cathode, acquisition sensor are connected with AD converter；The acquisition sensor is connect with DC side；The DC side positive and negative anodes
It is connect respectively with controller, multicarrier receiver and carrier wave transmitter.
The multicarrier receiver is arranged on each power switch in three phase full bridge current transformer.
The three phase full bridge current transformer is three-phase full-bridge rectifier or three-phase full-bridge inverter.
The DC side positive and negative anodes are as power switch control signal, fault-signal and unsteady flow signal output transducer
The telecommunication media of output signal.
This TT＆C system power switch controls signal and uses RF power high frequency carrier transceiver, passes through current transformer DC side
Positive and negative anodes are transmitted, and a multicarrier receiver is installed on each power switch, receive control signal, while fault-signal being led to
It crosses carrier wave transmitter and sends controller to through DC side positive and negative anodes, while the output signal of unsteady flow signal output transducer is first through AD
Converter is converted into digital signal and is transmitted on DC side positive and negative anodes again by carrier wave transmitter, and controller realizes Variable flow control
The acquisition positive and negative pole tension of DC side is also needed, DC side acquisition sensor is connected on carrier wave transmitter at this time, with carrier transmitting-receiving
Device realizes control to power switch control, the transmitting-receiving of fault-signal, output current sampled signal as the main interface of carrier-wave transmission.
This design can make the high-pressure section of controller low-pressure section and current transformer be all in DC side sampling sensing transceiver
Upper realization isolation and model transmission, electrical layout becomes very reasonable, and can easily realize the dilatation of parallel connection type, by unsteady flow
Device DC side parallel can be realized, and controller hardware only needs adjustment programme to be arranged without increasing any configuration.
Compared with prior art, the present invention has many advantages, such as that safe and reliable, rationally distributed, dilatation is convenient.
Description of the drawings
Fig. 1 is the structural diagram of the present invention
Wherein, 1 be exchange side, 2 be three phase full bridge current transformer, 3 be DC side, 4 be carrier transceiver, 5 be carrier wave receive
Device, 6 be carrier wave transmitter, 7 in order to control device, 8 be acquisition sensor, 9 be unsteady flow signal output transducer, 10 be AD converter,
11 be DC side positive and negative anodes.
Specific implementation mode
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of current transformer TT＆C system based on electric system high frequency carrier, including three phase full bridge current transformer
2, carrier transceiver 4, controller 7, acquisition sensor 8, unsteady flow signal output transducer 9 and AD converter 10；The carrier wave
Transceiver 4 includes multicarrier receiver 5 and carrier wave transmitter 6；The three phase full bridge current transformer 2 includes exchange side 1 and DC side
3, the DC side 3 includes DC side positive and negative anodes 11；
The carrier wave transmitter 5 is connect with DC side positive and negative anodes 11, acquisition sensor 8 and AD converter 10 respectively；Institute
The unsteady flow signal output transducer 9 stated is connect with AD converter 10；The acquisition sensor 8 is connect with DC side 3；Described
DC side positive and negative anodes 11 are connect with controller 7, multicarrier receiver 5 and carrier wave transmitter 6 respectively.
This TT＆C system power switch controls signal and uses RF power high frequency carrier transceiver, passes through current transformer DC side
Positive and negative anodes 11 are transmitted, and a multicarrier receiver 5 is installed on each power switch, receive control signal, while failure being believed
Number controller 7, while the output of unsteady flow signal output transducer 9 are sent to through DC side positive and negative anodes 11 by carrier wave transmitter 6
Signal is first converted into digital signal through AD converter 10 and is transmitted on DC side positive and negative anodes 11 again by carrier wave transmitter 6, control
Device 7 processed realizes that Variable flow control also needs the acquisition positive and negative pole tension of DC side, and DC side acquisition sensor 8 is connected to carrier wave hair at this time
It send on device 6, realizes control to power switch control, fault-signal, output using carrier transceiver 4 as the main interface of carrier-wave transmission
The transmitting-receiving of current sampling signal.
Claims (2)
1. a kind of current transformer TT＆C system based on electric system high frequency carrier, which is characterized in that including three phase full bridge current transformer
(2), carrier transceiver (4), controller (7), acquisition sensor (8), unsteady flow signal output transducer (9) and AD converter
(10)；The three phase full bridge current transformer (2) includes exchange side (1) and DC side (3)；The DC side (3) includes direct current
Side positive and negative anodes (11)；The carrier transceiver (4) includes multicarrier receiver (5) and carrier wave transmitter (6)；
The unsteady flow signal output transducer (9) is connect with AD converter (10)；The carrier wave transmitter (6) respectively with directly
Flow side positive and negative anodes (11), acquisition sensor (8) and AD converter (10) connection；The acquisition sensor (8) and DC side (3)
Connection；The DC side positive and negative anodes (11) are connect with controller (7), multicarrier receiver (5) and carrier wave transmitter (6) respectively；
The DC side positive and negative anodes (11) are as power switch control signal, fault-signal and unsteady flow signal output transducer
(9) telecommunication media of output signal；The TT＆C system power switch control signal is received using RF power high frequency carrier
Device is sent out, and is transmitted by current transformer DC side positive and negative anodes, a multicarrier receiver is installed on each power switch, receives control
Signal processed, while fault-signal is sent to controller through DC side positive and negative anodes by carrier wave transmitter, while unsteady flow signal is defeated
The output signal for going out sensor is first converted into digital signal through AD converter and is being transmitted to DC side just again by carrier wave transmitter
On cathode, controller realizes that Variable flow control also needs the acquisition positive and negative pole tension of DC side, at this time by DC side acquisition sensor connection
Onto carrier wave transmitter, power switch control, fault-signal, output are realized using carrier transceiver as the main interface of carrier-wave transmission
The transmitting-receiving of current sampling signal.
2. a kind of current transformer TT＆C system based on electric system high frequency carrier according to claim 1, which is characterized in that
The three phase full bridge current transformer (2) is three-phase full-bridge rectifier or three-phase full-bridge inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410112419.6A CN104950734B (en) | 2014-03-25 | 2014-03-25 | Current transformer TT＆C system based on electric system high frequency carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410112419.6A CN104950734B (en) | 2014-03-25 | 2014-03-25 | Current transformer TT＆C system based on electric system high frequency carrier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104950734A CN104950734A (en) | 2015-09-30 |
| CN104950734B true CN104950734B (en) | 2018-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410112419.6A Active CN104950734B (en) | 2014-03-25 | 2014-03-25 | Current transformer TT＆C system based on electric system high frequency carrier |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106301476B (en) * | 2016-09-28 | 2019-01-15 | 浙江方大智控科技有限公司 | A kind of carrier signal coupling circuit and carrier module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6381506B1 (en) * | 1996-11-27 | 2002-04-30 | Victor Grappone | Fail-safe microprocessor-based control and monitoring of electrical devices |
| CN201054505Y (en) * | 2007-05-29 | 2008-04-30 | 北京自动化技术研究院 | Data centralizer for optical voltage grid-parallel station |
| CN202906492U (en) * | 2012-11-28 | 2013-04-24 | 东方日立(成都)电控设备有限公司 | Solar cell panel generating monitoring system based on DC carrier wave technology |
| CN103246258B (en) * | 2013-04-17 | 2015-06-17 | 苏州市职业大学 | Welding machine power supply control system adopting power line carrier networking technology |
| CN103532417B (en) * | 2013-10-31 | 2015-10-28 | 哈尔滨工业大学 | A kind of control method of topology variable combining inverter |
| CN203894581U (en) * | 2014-03-25 | 2014-10-22 | 上海利思电气有限公司 | Current transformer measurement and control system based on electrical power system high-frequency carrier wave |
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