CN104953587A - Active filter device based on wireless sensing technology - Google Patents

Active filter device based on wireless sensing technology Download PDF

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Publication number
CN104953587A
CN104953587A CN201410111991.0A CN201410111991A CN104953587A CN 104953587 A CN104953587 A CN 104953587A CN 201410111991 A CN201410111991 A CN 201410111991A CN 104953587 A CN104953587 A CN 104953587A
Authority
CN
China
Prior art keywords
wireless
digital signal
signal processor
active filter
inverter
Prior art date
Application number
CN201410111991.0A
Other languages
Chinese (zh)
Inventor
戴维
Original Assignee
利思电气(上海)有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 利思电气(上海)有限公司 filed Critical 利思电气(上海)有限公司
Priority to CN201410111991.0A priority Critical patent/CN104953587A/en
Publication of CN104953587A publication Critical patent/CN104953587A/en

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Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/40Arrangements for reducing harmonics
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/7853
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/126Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission

Abstract

The invention relates to an active filter device based on a wireless sensing technology. The active filter device comprises a mutual inductor, a digital signal processor and an inverter, wherein the inverter is connected with the digital signal processor, a wireless sensing sampling converter is installed on the mutual inductor, a wireless receiver is connected to the digital signal processor, the wireless sensing sampling converter comprises an internal acquisition conversion circuit and a wireless sending circuit which are connected, and the wireless sending circuit is connected with a wireless receiver through a wireless network; the wireless sensing sampling converter converts the sampling signal acquired from the mutual inductor to a digital signal and sends out the digital signal through the wireless network, the wireless receiver receives the digital signal and then transmits the digital signal to the digital signal processor, and the digital signal processor controls the output of the inverter according to the received signal. Compared with the prior art, the active filter device disclosed by the invention has the advantages of being low in transmission interference, long in transmission distance, and the like.

Description

A kind of active filter based on wireless sensor technology
Technical field
The present invention relates to a kind of active filter, especially relate to a kind of active filter based on wireless sensor technology.
Background technology
The application of active filter can overcome the shortcoming (traditional can only fixed compensation) of traditional harmonics restraint such as LC filter and reactive-load compensation method, achieves dynamic tracing compensation, and not only can mend harmonic wave but also mend idle.Active filter needs the input (instrument transformer) of one group of sampled signal in use, analyzes the harmonic wave of tested electric current thus control inverter exports the harmonic wave of contrary equivalent by its canceling compensation with this signal.The quality of sampled signal determines compensation effect in actual applications, with the degree of stability of equipment, in a lot of spot sampling source (position that instrument transformer is installed) to filter distance length (more than 30 meters) very, much have simultaneously and produce the chance of interfering with electric power cable, so the final sampled signal distortion factor obtained is high.
Summary of the invention
Object of the present invention be exactly provide that a kind of transmission disturbance is low to overcome defect that above-mentioned prior art exists, the active filter based on wireless sensor technology that transmission range is long.
Object of the present invention can be achieved through the following technical solutions:
A kind of active filter based on wireless sensor technology, comprise instrument transformer, digital signal processor and inverter, described inverter is connected with digital signal processor, described instrument transformer is provided with wireless sensing oversampling converter, described digital signal processor is connected with wireless receiver, described wireless sensing oversampling converter comprises the built-in Collect conversion circuit and wireless transmission circuit that are connected, and described wireless transmission circuit is connected with wireless receiver by wireless network;
Wireless sensing oversampling converter converts the sampled signal gathered from instrument transformer to digital signal, and sent by wireless network, wireless receiver is transferred to digital signal processor after receiving this digital signal, and digital signal processor is according to the output of the signal controlling inverter received.
Described wireless transmission circuit is connected with transmitting antenna.
Described wireless receiver is connected with reception antenna.
Described wireless network comprises WiFi, GPRS or ZigBee.
Compared with prior art, the present invention employs wireless sensor technology in sampling section, therefore cable of not sampling, transmission disturbance is reduced to minimum; In addition, be installed on the antenna that the wireless transceiver on instrument transformer and digital signal processor configures, transmission reliability and transmission range can improved.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.The present embodiment is implemented premised on technical solution of the present invention, give detailed execution mode and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, a kind of active filter based on wireless sensor technology, comprise instrument transformer 1, digital signal processor 2 and inverter 3, described inverter 3 is connected with digital signal processor (DSP) 2, described instrument transformer 1 is provided with wireless sensing oversampling converter 4, described digital signal processor 2 is connected with wireless receiver 5, described wireless sensing oversampling converter 4 comprises the built-in Collect conversion circuit 41 and wireless transmission circuit 42 that are connected, described wireless transmission circuit 42 is connected with wireless receiver 5 by wireless network, wireless network comprises WiFi, GPRS or ZigBee.
During above-mentioned active filter work, wireless sensing oversampling converter 4 converts the sampled signal gathered from instrument transformer 1 to digital signal, and sent by wireless network, wireless receiver 5 is transferred to digital signal processor 2 after receiving this digital signal, digital signal processor 2 according to the output of the signal controlling inverter 3 received, thus carries out canceling compensation to harmonic wave.
Wireless transmission circuit and the configurable transmitting antenna of wireless receiver and reception antenna, to improve transmission reliability and transmission range.

Claims (4)

1. the active filter based on wireless sensor technology, comprise instrument transformer, digital signal processor and inverter, described inverter is connected with digital signal processor, it is characterized in that, described instrument transformer is provided with wireless sensing oversampling converter, described digital signal processor is connected with wireless receiver, described wireless sensing oversampling converter comprises the built-in Collect conversion circuit and wireless transmission circuit that are connected, and described wireless transmission circuit is connected with wireless receiver by wireless network;
Wireless sensing oversampling converter converts the sampled signal gathered from instrument transformer to digital signal, and sent by wireless network, wireless receiver is transferred to digital signal processor after receiving this digital signal, and digital signal processor is according to the output of the signal controlling inverter received.
2. a kind of active filter based on wireless sensor technology according to claim 1, is characterized in that, described wireless transmission circuit is connected with transmitting antenna.
3. a kind of active filter based on wireless sensor technology according to claim 1, is characterized in that, described wireless receiver is connected with reception antenna.
4. a kind of active filter based on wireless sensor technology according to claim 1, it is characterized in that, described wireless network comprises WiFi, GPRS or ZigBee.
CN201410111991.0A 2014-03-24 2014-03-24 Active filter device based on wireless sensing technology CN104953587A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410111991.0A CN104953587A (en) 2014-03-24 2014-03-24 Active filter device based on wireless sensing technology

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410111991.0A CN104953587A (en) 2014-03-24 2014-03-24 Active filter device based on wireless sensing technology

Publications (1)

Publication Number Publication Date
CN104953587A true CN104953587A (en) 2015-09-30

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CN201410111991.0A CN104953587A (en) 2014-03-24 2014-03-24 Active filter device based on wireless sensing technology

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CN (1) CN104953587A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106374622A (en) * 2016-09-26 2017-02-01 湖南文理学院 Power grid control apparatus based on wireless sensing distribution technology

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001011763A1 (en) * 1999-08-06 2001-02-15 The Regents Of The University Of California Unified constant-frequency integration control of three-phase power factor corrected rectifiers, active power filters, and grid-connected inverters
CN201402520Y (en) * 2009-05-14 2010-02-10 长安大学 Bridge strain collecting instrument based on wireless sensing network interface
CN201608532U (en) * 2010-02-10 2010-10-13 南京亚派科技实业有限公司 Active power filter system
CN201821510U (en) * 2010-08-26 2011-05-04 李中兵 Fish pond environmental information detection system based on wireless sensor network
CN203883474U (en) * 2014-03-24 2014-10-15 上海利思电气有限公司 Active filtering device based on wireless sensing technology

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001011763A1 (en) * 1999-08-06 2001-02-15 The Regents Of The University Of California Unified constant-frequency integration control of three-phase power factor corrected rectifiers, active power filters, and grid-connected inverters
CN201402520Y (en) * 2009-05-14 2010-02-10 长安大学 Bridge strain collecting instrument based on wireless sensing network interface
CN201608532U (en) * 2010-02-10 2010-10-13 南京亚派科技实业有限公司 Active power filter system
CN201821510U (en) * 2010-08-26 2011-05-04 李中兵 Fish pond environmental information detection system based on wireless sensor network
CN203883474U (en) * 2014-03-24 2014-10-15 上海利思电气有限公司 Active filtering device based on wireless sensing technology

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106374622A (en) * 2016-09-26 2017-02-01 湖南文理学院 Power grid control apparatus based on wireless sensing distribution technology

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Application publication date: 20150930

RJ01 Rejection of invention patent application after publication