CN203894581U - Current transformer measurement and control system based on electrical power system high-frequency carrier wave - Google Patents
Current transformer measurement and control system based on electrical power system high-frequency carrier wave Download PDFInfo
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- CN203894581U CN203894581U CN201420135961.9U CN201420135961U CN203894581U CN 203894581 U CN203894581 U CN 203894581U CN 201420135961 U CN201420135961 U CN 201420135961U CN 203894581 U CN203894581 U CN 203894581U
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- carrier wave
- current transformer
- direct current
- current side
- phase full
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- 238000005259 measurement Methods 0.000 title abstract 4
- 230000001131 transforming effect Effects 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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Abstract
The utility model relates to a current transformer measurement and control system based on an electrical power system high-frequency carrier wave. The current transformer measurement and control system comprises a three-phase full-bridge current transformer, a carrier wave transceiver, a controller, an acquisition sensor, a current transforming signal output sensor and an AD converter. The three-phase full-bridge current transformer comprises an alternating current side and a direct current side. The direct current side comprises a direct current side positive electrode and a direct current side negative electrode. The carrier wave transceiver comprises a carrier wave receiver and a carrier wave transmitter. The current transforming signal output sensor is connected with the AD converter. The carrier wave transmitter is connected with the direct current side positive electrode, the direct current side negative electrode, the acquisition sensor and the AD converter respectively. The acquisition sensor is connected with the direct current side. The direct current side positive electrode and the direct current side negative electrode are connected with the controller, the carrier wave receiver and the carrier wave transmitter respectively. Compared with the prior art, the measurement and control system has advantages of safety, reliability, reasonable arrangement, convenient expansion and the like.
Description
Technical field
The utility model relates to a kind of current transformer TT&C system, especially relates to a kind of current transformer TT&C system based on electric system high frequency carrier.
Background technology
Its main circuit of electronic power convertor is generally three phase full bridge current transformer 2 level structures, and element is generally full-control type power switch, and its control signal adopts cable or optical fiber as transmission medium.Do not isolate due to the low-pressure section of controller and the high-pressure section signal of current transformer, affect the transmission of quotation marks, make electrical layout unreasonable, and be difficult to realize dilatation.
Utility model content
The purpose of this utility model is exactly to provide a kind of current transformer TT&C system based on electric system high frequency carrier in order to overcome the defect that above-mentioned prior art exists.
The purpose of this utility model can be achieved through the following technical solutions:
A current transformer TT&C system based on electric system high frequency carrier, is characterized in that, comprises three phase full bridge current transformer, carrier transmitting-receiving device, controller, pick-up transducers, unsteady flow signal output transducer and AD converter; Described three phase full bridge current transformer comprises AC and DC side; Described DC side comprises DC side both positive and negative polarity; Described carrier transmitting-receiving device comprises carrier wave receiver and carrier wave transmitter;
Described unsteady flow signal output transducer is connected with AD converter; Described carrier wave transmitter is connected with DC side both positive and negative polarity, pick-up transducers and AD converter respectively; Described pick-up transducers is connected with DC side; Described DC side both positive and negative polarity is connected with controller, carrier wave receiver and carrier wave transmitter respectively.
Described carrier wave receiver is arranged on the each power switch in three phase full bridge current transformer.
Described three phase full bridge current transformer is three-phase full-bridge rectifier or three-phase full-bridge inverter.
Described DC side both positive and negative polarity is as the telecommunication media of the output signal of power switch control signal, fault-signal and unsteady flow signal output transducer.
This TT&C system power switch control signal adopts High frequency power high frequency carrier transceiver, transmit by current transformer DC side both positive and negative polarity, a carrier wave receiver is installed on each power switch, reception control signal, send fault-signal to controller by carrier wave transmitter through DC side both positive and negative polarity simultaneously, the output signal of while unsteady flow signal output transducer first converts digital signal to through AD converter and is sent on DC side both positive and negative polarity by carrier wave transmitter equally, controller is realized Variable flow control and is also needed to gather DC side both positive and negative polarity voltage, now DC side pick-up transducers is connected on carrier wave transmitter, main interface using carrier transmitting-receiving device as carrier-wave transmission is realized and is controlled to power switch control, fault-signal, the transmitting-receiving of output current sampled signal.
This design can make the high-pressure section of controller low-pressure section and current transformer be all on DC side sampling sensing transceiver and realize isolation and model transmission, it is very reasonable that electrical layout becomes, and can realize easily the dilatation of parallel connection type, current transformer DC side parallel can be realized, controller hardware, without increasing any configuration, only needs adjustment programme setting.
Compared with prior art, the utlity model has the advantages such as safe and reliable, rationally distributed, dilatation is convenient.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model
Wherein, 1 is that AC, 2 is that three phase full bridge current transformer, 3 is that DC side, 4 is that carrier transmitting-receiving device, 5 is that carrier wave receiver, 6 is that carrier wave transmitter, 7 is that controller, 8 is that pick-up transducers, 9 is that unsteady flow signal output transducer, 10 is that AD converter, 11 is DC side both positive and negative polarity.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
As shown in Figure 1, a kind of current transformer TT&C system based on electric system high frequency carrier, comprises three phase full bridge current transformer 2, carrier transmitting-receiving device 4, controller 7, pick-up transducers 8, unsteady flow signal output transducer 9 and AD converter 10; Described carrier transmitting-receiving device 4 comprises carrier wave receiver 5 and carrier wave transmitter 6; Described three phase full bridge current transformer 2 comprises AC 1 and DC side 3, and described DC side 3 comprises DC side both positive and negative polarity 11;
Described carrier wave transmitter 5 is connected with DC side both positive and negative polarity 11, pick-up transducers 8 and AD converter 10 respectively; Described unsteady flow signal output transducer 9 is connected with AD converter 10; Described pick-up transducers 8 is connected with DC side 3; Described DC side both positive and negative polarity 11 is connected with controller 7, carrier wave receiver 5 and carrier wave transmitter 6 respectively.
This TT&C system power switch control signal adopts High frequency power high frequency carrier transceiver, transmit by current transformer DC side both positive and negative polarity 11, a carrier wave receiver 5 is installed on each power switch, reception control signal, send fault-signal to controller 7 by carrier wave transmitter 6 through DC side both positive and negative polarity 11 simultaneously, the output signal of while unsteady flow signal output transducer 9 first converts digital signal to through AD converter 10 and is sent on DC side both positive and negative polarity 11 by carrier wave flow passages 6 equally, controller 7 is realized Variable flow control and is also needed to gather DC side both positive and negative polarity voltage, now DC side pick-up transducers 8 is connected on carrier wave transmitter 6, main interface using carrier transmitting-receiving device 4 as carrier-wave transmission is realized and is controlled to power switch control, fault-signal, the transmitting-receiving of output current sampled signal.
Claims (4)
1. the current transformer TT&C system based on electric system high frequency carrier, it is characterized in that, comprise three phase full bridge current transformer (2), carrier transmitting-receiving device (4), controller (7), pick-up transducers (8), unsteady flow signal output transducer (9) and AD converter (10); Described three phase full bridge current transformer (2) comprises AC (1) and DC side (3); Described DC side (3) comprises DC side both positive and negative polarity (11); Described carrier transmitting-receiving device (4) comprises carrier wave receiver (5) and carrier wave transmitter (6):
Described unsteady flow signal output transducer (9) is connected with AD converter (10); Described carrier wave transmitter (6) is connected with DC side both positive and negative polarity (11), pick-up transducers (8) and AD converter (10) respectively; Described pick-up transducers (8) is connected with DC side (3); Described DC side both positive and negative polarity (11) is connected with controller (7), carrier wave receiver (5) and carrier wave transmitter (6) respectively.
2. a kind of current transformer TT&C system based on electric system high frequency carrier according to claim 1, is characterized in that, described carrier wave receiver (5) is arranged on the each power switch in three phase full bridge current transformer (2).
3. a kind of current transformer TT&C system based on electric system high frequency carrier according to claim 1, is characterized in that, described three phase full bridge current transformer (2) is three-phase full-bridge rectifier or three-phase full-bridge inverter.
4. a kind of current transformer TT&C system based on electric system high frequency carrier according to claim 1, it is characterized in that, described DC side both positive and negative polarity (11) is as the telecommunication media of the output signal of power switch control signal, fault-signal and unsteady flow signal output transducer (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135961.9U CN203894581U (en) | 2014-03-25 | 2014-03-25 | Current transformer measurement and control system based on electrical power system high-frequency carrier wave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135961.9U CN203894581U (en) | 2014-03-25 | 2014-03-25 | Current transformer measurement and control system based on electrical power system high-frequency carrier wave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203894581U true CN203894581U (en) | 2014-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420135961.9U Expired - Lifetime CN203894581U (en) | 2014-03-25 | 2014-03-25 | Current transformer measurement and control system based on electrical power system high-frequency carrier wave |
Country Status (1)
| Country | Link |
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| CN (1) | CN203894581U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104950734A (en) * | 2014-03-25 | 2015-09-30 | 利思电气（上海）有限公司 | Current transformer measurement and control system based on high-frequency carrier of electrical power system |
-
2014
- 2014-03-25 CN CN201420135961.9U patent/CN203894581U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104950734A (en) * | 2014-03-25 | 2015-09-30 | 利思电气（上海）有限公司 | Current transformer measurement and control system based on high-frequency carrier of electrical power system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: LIVESINE ELECTRIC (SHANGHAI) CO., LTD. Free format text: FORMER NAME: SHANGHAI DOUBLE X TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 201108 Shanghai, Minhang District, Hong Jian Road, No. third, building 1, building 99, 2 Patentee after: SHANGHAI LIVESINE ELECTRIC Co.,Ltd. Address before: 200240 C building, No. 4299 Jin Du Road, Shanghai, Minhang District, 1-773 Patentee before: SHANGHAI DOUBLE X TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141022 |