CN102955078A - Novel alternating-current nuclear phase circuit - Google Patents

Novel alternating-current nuclear phase circuit Download PDF

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Publication number
CN102955078A
CN102955078A CN2012104146770A CN201210414677A CN102955078A CN 102955078 A CN102955078 A CN 102955078A CN 2012104146770 A CN2012104146770 A CN 2012104146770A CN 201210414677 A CN201210414677 A CN 201210414677A CN 102955078 A CN102955078 A CN 102955078A
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CN
China
Prior art keywords
phase
photoisolator
voltage
rectifying
current nuclear
Prior art date
Application number
CN2012104146770A
Other languages
Chinese (zh)
Inventor
楼平
张从柱
吴兴华
唐明
顾亮
Original Assignee
湖州电力局
湖州泰仑电力自动化工程有限公司
国家电网公司
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.)
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Publication date
Application filed by 湖州电力局, 湖州泰仑电力自动化工程有限公司, 国家电网公司 filed Critical 湖州电力局
Priority to CN2012104146770A priority Critical patent/CN102955078A/en
Publication of CN102955078A publication Critical patent/CN102955078A/en

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Abstract

The invention discloses a novel alternating-current nuclear phase circuit. An output end is externally connected with two different power grid three-phase power supplies; the novel alternating-current nuclear phase circuit comprises rectifying modules and filtering capacitors, wherein a rectifying module and a filtering capacitor are configured for voltage of each phase of each three-phase power supply; the novel alternating-current nuclear phase circuit further comprises an optoelectronic isolator; the rectifying modules are used for obtaining same-phase voltage of all phases of the two different three-phase power supplies, rectifying a voltage signal, transmitting the rectifying signal to the filtering capacitors to be filtered and finally a judging voltage signal is output to the optoelectronic isolator; and an output end of the optoelectronic isolator is further connected with a rear-grade power grid power utilization load. According to the novel alternating-current nuclear phase circuit, three-phase voltage of the two power supplies is judged and a rear-grade circuit is locked in time, so as to avoid switching movement due to power supply selection and causing accident hidden dangers of an electric power system.

Description

A kind of novel interchange nuclear phase circuit

Technical field

The present invention relates generally to a kind of novel interchange nuclear phase circuit.

Background technology

Development along with power industry, the electrical network user is more and more higher to power supply reliability and security requirement, preventing that phase place is not the target that Operation of Electric Systems department is pursued all the time to the accident that causes in the dual power supply handoff procedure, also is one of main direction of electric system research.How guaranteeing not occur in the load switching process misphase and out-phase, is the key of technology by Real-Time Monitoring phase place situation and timely locking associative operation circuit.Traditional nuclear phase work is that the operation power personnel manually finish by phasing tester.Switch with the Intellectual computer monitoring means possesses computing power, but microcomputer device is higher to the requirement of environment, is not suitable for using under the abominable condition of environment.

Summary of the invention

The present invention is intended to solve the defective that prior art exists, design a kind of nuclear phase decision circuitry in the dual power supply handoff procedure, in the judgement of dual power supply switching preparatory condition, phase place to the three-phase voltage (Ua1, Ub1, Uc1 and Ua2, Ub2, Uc2) of two-way power supply is differentiated, detect when finding that phase differential surpasses certain certain value, then be judged to be the condition that does not possess mutual switching between the two-way power supply, timely lock operation circuit is in order to avoid the power supply that switching is controlled to the user brings larger loss.

In order to realize above-mentioned purpose of design, technical scheme 1 of the present invention designs a kind of interchange nuclear phase circuit, and it mainly is comprised of silicon stack (rectification module), photoisolator, filter capacitor and adjustable resistance, and the dual power supply situation is effectively judged and moved.Specific as follows: a kind of novel interchange nuclear phase circuit, its input end is external in two different electrical network three-phase supply, comprise the rectification module and the filter capacitor that are respectively each phase voltage configuration of three phase network, and further comprise photoisolator, wherein said rectification module obtains each phase in-phase voltage of two different three-phase supply, and described voltage signal carried out rectification, with rectified signal transfer to filter capacitor in addition after the filtering one of output judge voltage signal to photoisolator, the output terminal of described photoisolator further connects rear class electrical network electric loading.

Further, in a preferred embodiment of the invention, between described filter capacitor and photoisolator, connect and establish for the sensitivity of regulating photoisolator and the adjustable resistance of angle.

The invention has the beneficial effects as follows apparent, by the judgement to the three-phase voltage of two-way power supply, timely locking late-class circuit, thereby avoided selecting the switching action carried out, the accident potential that causes electric system because of power supply.

Description of drawings

The present invention is described further below in conjunction with accompanying drawing:

Fig. 1 is circuit theory diagrams of the present invention.

Embodiment

With reference to Fig. 1, the input end that the present invention exchanges the preferred embodiment of nuclear phase circuit is external in two different electrical network three-phase supply, comprise the A that is respectively three phase network, B, rectification module 31 and the filter capacitor C of each phase voltage configuration of C, and further comprise photoisolator 33, wherein said rectification module 31 obtains each phase in-phase voltage of two different three-phase supply, and described voltage signal carried out rectification, with rectified signal transfer to filter capacitor C in addition after the filtering one of output judge voltage signal to photoisolator 33, the output terminal of described photoisolator 33 further connects rear class electrical network electric loading.

Further, in a preferred embodiment of the invention, between described filter capacitor C and photoisolator 33, connect and establish for the sensitivity of regulating photoisolator 33 and the adjustable resistance 31 of angle.

In Fig. 1, for voltage U A1, UB1, UC1 and UA2, UB2, the UC2 of two different three-phase supply, be respectively rectifier module D 1201D of each phase voltage configuration, 1202 and D1203, each rectification module 31 receives the in-phase voltage signal of two power supplys.

In a preferred embodiment of the invention, take the A phase voltage as example, A phase voltage UA1 and the UA2 of two separate sources after rectifier module D 1201 rectifications, carry out filtering by filter capacitor C888.If wherein two voltage U A1 and UA2 homophase then the output voltage of rectification module 31 be 0, if UA1 and UA2 not homophase then export a voltage signal that plays the judgement effect, this voltage signal further drives block signal IN13 of photoisolator 33 output.

In a preferred embodiment of the invention, two photoisolator E1201 and E1202 have been used, wherein A phase and B mutually output signal share a photoisolator E1201, two function end also connects the identical output terminal of E1202, to realize the synchronous of three-phase voltage signal and to share, thereby output locking signal IN13, IN14, IN15 are with the on/off of further control rear class electrical network load equipment.

In a preferred embodiment of the invention, photoelectrical coupler 33(is the aforementioned E1201 that mentions and E1202) sensitivity and angle realize by adjustable resistance R1202.

Being preferred implementation of the present invention only below, being intended to embody outstanding technique effect of the present invention and advantage, is not to be restriction to technical scheme of the present invention.Those skilled in the art will appreciate that all modifications of having done based on the technology of the present invention content, variation or substitute technology feature, all should be covered by in the technology category of claims opinion of the present invention.

Claims (2)

1. novel interchange nuclear phase circuit, its input end is external in two different electrical network three-phase supply, it is characterized in that: comprise the rectification module (31) and the filter capacitor (C) that are respectively each phase voltage configuration of three phase network, and further comprise photoisolator (33), wherein said rectification module (31) obtains each phase in-phase voltage of two different three-phase supply, and described voltage signal carried out rectification, with rectified signal transfer to filter capacitor (C) in addition after the filtering one of output judge voltage signal to photoisolator (33), the output terminal of described photoisolator (33) further connects rear class electrical network electric loading.
2. novel interchange nuclear phase circuit as claimed in claim 1 is characterized in that: connect between described filter capacitor (C) and photoisolator (33) and establish for the sensitivity of regulating photoisolator (33) and the adjustable resistance (32) of angle.
CN2012104146770A 2012-10-25 2012-10-25 Novel alternating-current nuclear phase circuit CN102955078A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN2012104146770A CN102955078A (en) 2012-10-25 2012-10-25 Novel alternating-current nuclear phase circuit

Publications (1)

Publication Number Publication Date
CN102955078A true CN102955078A (en) 2013-03-06

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Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2289333Y (en) * 1996-06-11 1998-08-26 重庆科能电力技术开发公司 Device for automatic compensating single phase reactive power
CN2676212Y (en) * 2003-07-30 2005-02-02 刘源 Digital display phase detector
CN101419248A (en) * 2008-12-11 2009-04-29 北京合锐赛尔电力科技有限公司 Charge display device
CN201282359Y (en) * 2008-09-13 2009-07-29 Abb新会低压开关有限公司 Phase lack detection device for double power supply automatic transfer equipment
CN201327513Y (en) * 2008-12-11 2009-10-14 北京合锐赛尔电力科技有限公司 General-purpose electric phase detector
CN201425612Y (en) * 2009-04-13 2010-03-17 南京源纳科技有限公司 Wireless high voltage digital phase-checking instrument
CN101788615A (en) * 2010-01-11 2010-07-28 中色科技股份有限公司 Simple method for detecting phase sequence of three-phase industrial-frequency alternating current and detection device
CN201590615U (en) * 2009-11-24 2010-09-22 华北电网有限公司廊坊供电公司 High-pressure nuclear phase device for central-positioned high-voltage switch cabinets
CN101943719A (en) * 2010-09-09 2011-01-12 上海希明电气技术有限公司 Shared-frequency asynchronous phase-checking method
CN201876504U (en) * 2010-12-02 2011-06-22 河南省电力公司安阳供电公司 Nuclear phase handcart
CN201945634U (en) * 2010-08-31 2011-08-24 上海希明电气技术有限公司 Phase sequence post with signal output function
CN202330571U (en) * 2011-12-09 2012-07-11 辽宁省电力有限公司沈阳供电公司 Phasing testers realizing phasing function by utilizing relay contacts
CN202837414U (en) * 2012-10-25 2013-03-27 湖州电力局 Novel alternating-current phase checking circuit

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2289333Y (en) * 1996-06-11 1998-08-26 重庆科能电力技术开发公司 Device for automatic compensating single phase reactive power
CN2676212Y (en) * 2003-07-30 2005-02-02 刘源 Digital display phase detector
CN201282359Y (en) * 2008-09-13 2009-07-29 Abb新会低压开关有限公司 Phase lack detection device for double power supply automatic transfer equipment
CN101419248A (en) * 2008-12-11 2009-04-29 北京合锐赛尔电力科技有限公司 Charge display device
CN201327513Y (en) * 2008-12-11 2009-10-14 北京合锐赛尔电力科技有限公司 General-purpose electric phase detector
CN201425612Y (en) * 2009-04-13 2010-03-17 南京源纳科技有限公司 Wireless high voltage digital phase-checking instrument
CN201590615U (en) * 2009-11-24 2010-09-22 华北电网有限公司廊坊供电公司 High-pressure nuclear phase device for central-positioned high-voltage switch cabinets
CN101788615A (en) * 2010-01-11 2010-07-28 中色科技股份有限公司 Simple method for detecting phase sequence of three-phase industrial-frequency alternating current and detection device
CN201945634U (en) * 2010-08-31 2011-08-24 上海希明电气技术有限公司 Phase sequence post with signal output function
CN101943719A (en) * 2010-09-09 2011-01-12 上海希明电气技术有限公司 Shared-frequency asynchronous phase-checking method
CN201876504U (en) * 2010-12-02 2011-06-22 河南省电力公司安阳供电公司 Nuclear phase handcart
CN202330571U (en) * 2011-12-09 2012-07-11 辽宁省电力有限公司沈阳供电公司 Phasing testers realizing phasing function by utilizing relay contacts
CN202837414U (en) * 2012-10-25 2013-03-27 湖州电力局 Novel alternating-current phase checking circuit

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