CN104950734A - Current transformer measurement and control system based on high-frequency carrier of electrical power system - Google Patents
Current transformer measurement and control system based on high-frequency carrier of electrical power system Download PDFInfo
- Publication number
- CN104950734A CN104950734A CN201410112419.6A CN201410112419A CN104950734A CN 104950734 A CN104950734 A CN 104950734A CN 201410112419 A CN201410112419 A CN 201410112419A CN 104950734 A CN104950734 A CN 104950734A
- Authority
- CN
- China
- Prior art keywords
- current transformer
- carrier
- converter
- phase full
- positive
- 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.)
- Granted
Links
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Inverter Devices (AREA)
Abstract
The invention relates to a current transformer measurement and control system based on the high-frequency carrier of an electrical power system. The current transformer measurement and control system comprises a three-phase full-bridge converter, a carrier transceiver, a controller, an acquisition sensor, a conversion signal output sensor and an AD converter, wherein the three-phase full-bridge converter comprises an alternating-current side and a direct-current side; the direct-current side comprises a positive electrode and a negative electrode of the direct-current side; the carrier transceiver comprises a carrier receiver and a carrier transmitter; the conversion signal output sensor is connected with the AD converter; the carrier transmitter is connected with the positive electrode and the negative electrode of the direct-current side, the acquisition sensor and the AD converter respectively; the acquisition sensor is connected with the direct-current side; the positive electrode and the negative electrode of the direct-current side are connected with the controller, the carrier receiver and the carrier transmitter respectively. Compared with the prior art, the current transformer measurement and control system disclosed by the invention has the advantages of being safe and reliable, reasonable in layout, convenient to expand capacity, and the like.
Description
Technical field
The present invention relates to a kind of current transformer TT&C system, especially relate 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 block, and element is generally full-control type power switch, and its control signal adopts cable or optical fiber as transmission medium.Because the low-pressure section of controller and the high-pressure section signal of current transformer are not isolated, affect the transmission of quotation marks, make electrical layout unreasonable, and be difficult to realize dilatation.
Summary of the invention
Object of the present invention be exactly in order to overcome above-mentioned prior art exist defect and a kind of current transformer TT&C system based on electric system high frequency carrier is provided.
Object of the present invention can be achieved through the following technical solutions:
Based on a current transformer TT&C system for electric system high frequency carrier, it is characterized in that, comprise three phase full bridge current transformer, carrier transceiver, 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 transceiver comprises multicarrier 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, multicarrier receiver and carrier wave transmitter respectively.
Described multicarrier receiver is arranged on 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, transmitted by current transformer DC side both positive and negative polarity, each power switch installs a multicarrier receiver, reception control signal, send fault-signal to controller by carrier wave transmitter through DC side both positive and negative polarity simultaneously, simultaneously the output signal of 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 realizes Variable flow control also to be needed to gather DC side both positive and negative polarity voltage, now DC side pick-up transducers is connected on carrier wave transmitter, realize controlling to power switch using carrier transceiver as the main interface of carrier-wave transmission to 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 the dilatation of parallel connection type can be realized easily, current transformer DC side parallel can be realized, controller hardware, without the need to increasing any configuration, only needs adjustment programme to arrange.
Compared with prior art, the present invention has the advantages such as safe and reliable, rationally distributed, dilatation is convenient.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention
Wherein, 1 be AC, 2 be three phase full bridge current transformer, 3 be DC side, 4 be carrier transceiver, 5 be multicarrier receiver, 6 be carrier wave transmitter, 7 be controller, 8 be pick-up transducers, 9 be unsteady flow signal output transducer, 10 be AD converter, 11 for DC side both positive and negative polarity.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
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 transceiver 4, controller 7, pick-up transducers 8, unsteady flow signal output transducer 9 and AD converter 10; Described carrier transceiver 4 comprises multicarrier 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, multicarrier receiver 5 and carrier wave transmitter 6 respectively.
This TT&C system power switch control signal adopts High frequency power high frequency carrier transceiver, transmitted by current transformer DC side both positive and negative polarity 11, each power switch installs a multicarrier receiver 5, reception control signal, send fault-signal to controller 7 by carrier wave transmitter 6 through DC side both positive and negative polarity 11 simultaneously, simultaneously the output signal of 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 transmitter 6 equally, controller 7 realizes Variable flow control also to be 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, realize controlling to power switch using carrier transceiver 4 as the main interface of carrier-wave transmission to 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 transceiver (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 transceiver (4) comprises multicarrier 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), multicarrier 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 multicarrier receiver (5) is arranged on 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 |
|---|---|---|---|
| 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 true CN104950734A (en) | 2015-09-30 |
| CN104950734B CN104950734B (en) | 2018-07-27 |
Family
ID=54165466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410112419.6A Active CN104950734B (en) | 2014-03-25 | 2014-03-25 | Current transformer TT＆C system based on electric system high frequency carrier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104950734B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106301476A (en) * | 2016-09-28 | 2017-01-04 | 浙江方大智控科技有限公司 | A kind of carrier signal coupling circuit and carrier module |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103246258A (en) * | 2013-04-17 | 2013-08-14 | 苏州市职业大学 | Welding machine power supply control system adopting power line carrier networking technology |
| CN103532417A (en) * | 2013-10-31 | 2014-01-22 | 哈尔滨工业大学 | Control method of topology variable grid-connected 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 |
-
2014
- 2014-03-25 CN CN201410112419.6A patent/CN104950734B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103246258A (en) * | 2013-04-17 | 2013-08-14 | 苏州市职业大学 | Welding machine power supply control system adopting power line carrier networking technology |
| CN103532417A (en) * | 2013-10-31 | 2014-01-22 | 哈尔滨工业大学 | Control method of topology variable grid-connected 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 |
Non-Patent Citations (1)
| Title |
|---|
| 朱锐等: "基于电力载波的光伏数据采集系统设计", 《中国科技信息》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106301476A (en) * | 2016-09-28 | 2017-01-04 | 浙江方大智控科技有限公司 | A kind of carrier signal coupling circuit and carrier module |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104950734B (en) | 2018-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103063904A (en) | Zero cross detection circuit | |
| WO2011070512A3 (en) | Enhanced power supply unit for powerline networks | |
| CN203894581U (en) | Current transformer measurement and control system based on electrical power system high-frequency carrier wave | |
| CN103728496A (en) | Antenna tuner impedance detection method based on phase detection | |
| CN104950734A (en) | Current transformer measurement and control system based on high-frequency carrier of electrical power system | |
| CN104077260B (en) | A kind of concentrator M BUS host communication interface arrangements | |
| CN109962518A (en) | A kind of locomotive storage batteries status monitoring and intelligence control system | |
| CN101969296A (en) | Power line carrier communication-based impedance adaptive power amplifier circuit and realization method thereof | |
| CN111404580A (en) | OFDM-based DC/DC converter power line power signal composite transmission system and transmission method | |
| CN204179952U (en) | There is the low-voltage and high-current variable frequency power supply of real-time leakage current test function | |
| CN103197132A (en) | Three-model redundant (TMR) digital current sensor | |
| CN203301361U (en) | Intelligent current and voltage isolated transmitter for photovoltaic grid-connected inverter | |
| CN202798501U (en) | Voltage transducer circuit of online monitoring device of switch cabinet | |
| CN103856071B (en) | The power cell control circuit of high voltage converter | |
| CN103729008B (en) | Wide-current-range alternating-current and constant-current source compensation type control method | |
| CN101783592A (en) | Modulation-demodulation method of high-voltage frequency converter | |
| CN103427502A (en) | Circuit and method for modulating envelope curves of IPT (inductive power transfer) system on basis of pulse width recognition | |
| CN203101499U (en) | Voltage acquisition circuit | |
| CN202210801U (en) | Power carrier data wireless transceiver | |
| CN104319802A (en) | Long-distance power transmission system | |
| CN205335852U (en) | External device of low pressure line termination pressure regulating and pressure regulating equipment | |
| CN203883474U (en) | Active filtering device based on wireless sensing technology | |
| CN205453642U (en) | Based on MCU control power amplifier offset voltage device | |
| CN105186891B (en) | A method of it allows rectification module to have and stabilizes the output voltage | |
| CN201402983Y (en) | Digitalized dynamic intelligent reactive-load compensating gear |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |