CN102280853B - Intelligent overcurrent phase-failure protector of distribution transformer - Google Patents

Intelligent overcurrent phase-failure protector of distribution transformer Download PDF

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Publication number
CN102280853B
CN102280853B CN201010206741.7A CN201010206741A CN102280853B CN 102280853 B CN102280853 B CN 102280853B CN 201010206741 A CN201010206741 A CN 201010206741A CN 102280853 B CN102280853 B CN 102280853B
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China
Prior art keywords
circuit
signal data
distribution transformer
signal
decision circuitry
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Expired - Fee Related
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CN201010206741.7A
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Chinese (zh)
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CN102280853A (en
Inventor
陈家斌
张露江
朱秀文
易保华
沈磊
季钢
陈蕾
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Zhumadian Power Supply Co of Henan Electric Power Co
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Zhumadian Power Supply Co of Henan Electric Power Co
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Priority to CN201010206741.7A priority Critical patent/CN102280853B/en
Publication of CN102280853A publication Critical patent/CN102280853A/en
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    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS 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
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
    • Y—GENERAL 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS 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
    • Y04S40/00—Systems 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
    • Y04S40/12—Systems 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
    • Y04S40/124—Systems 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 wired telecommunication networks or data transmission busses

Abstract

The invention discloses an intelligent overcurrent phase-failure protector of a distribution transformer. The intelligent overcurrent phase-failure protector is characterized by comprising a signal data acquisition circuit, a signal data calculation judgment circuit, a switch operating circuit and an optical terminal circuit. The signal data acquisition circuit acquires signal data from a distribution transformer device system, and the output of the signal data acquisition circuit is connected with the signal data calculation judgment circuit and the optical terminal circuit. The output of the signal data calculation judgment circuit is connected with the switch operating circuit and the optical terminal circuit. The switch operating circuit is connected with the optical terminal circuit. The optical terminal circuit is connected with an optical fiber communication cable circuit, and the optical fiber communication cable circuit is connected with a distribution network intelligent control center. The intelligent protector can be applied to carry out intelligent overcurrent phase-failure protection management in the running process of the distribution transformer by utilizing an advanced electronic technique; and when high/low voltage overcurrent and phase failure accidents generate in the running process of the distribution transformer, an overhaul staff can immediately reach the accident scene to overhaul, thus the accident processing time is shortened, the power supply quality is increased, and the corporation and social benefits are increased. Meanwhile, the intelligent overcurrent phase-failure protector disclosed by the invention also exerts the positive facilitation to the development of an intelligent technique of an electric distribution system.

Description

Distribution transformer overcurrent, open-phase intelligent protector
Technical field
The present invention relates to a kind of distribution transformer overcurrent in service, open-phase protection technology, is to be a kind ofly applied to power distribution network supply transformer when operation while there is the melt fusing of high-low voltage overcurrent, fuse or report to the police in other reasons open phase protection and a distant place.
Background technology
At present, along with industrial and agricultural production great development, national economy improves rapidly, and living standards of the people constantly promote, and power industry is also developed on an unprecedented scale, and nationwide integrated power grid construction is maked rapid progress.The electric power of electrical network is delivered to huge numbers of families after by distribution transformer transformation, the distribution transformer of current operation, and following 400V distribution system, owing to not monitoring in real time, substantially be out of order, by user notification maintainer, carry out overhaul of the equipments, the time that troubleshooting is dragged is like this long, user is had a power failure to impact greatly, therefore power supply reliability is low, device damage rate is high, can not meet the requirement that living standards of the people improve constantly, if popularize application overcurrent in an all-round way, phase remote alarm technique, when transformer overcurrent occurs, during phase shortage accident, maintainer's very first time can rush to repair in time to scene, shorten the accident treatment time, improve amount of power supply, increase enterprise and social benefit.To distribution system intellectualized technology, positive facilitation is also played in development simultaneously.
Summary of the invention
Distribution transformer overcurrent, open-phase intelligent protector comprise signal data acquisition circuit, and signal data calculates decision circuitry, switching manipulation circuit, optical transmitter and receiver circuit;
Wherein, described signal data acquisition circuit, collects signal data output from distribution transformer device systems and connects described signal data calculating decision circuitry, optical transmitter and receiver circuit; Signal data calculates decision circuitry output and connects described switching manipulation circuit, optical transmitter and receiver circuit; Described switching manipulation circuit connects optical transmitter and receiver circuit, and optical transmitter and receiver circuit connects optical fibre communication cable circuit, and optical fibre communication cable circuit connects distribution intelligent control center.
Signal data acquisition circuit comprises a current transformer, a current relay; Described Current Mutual Inductance has four terminations, is respectively 1,2,3,4; Described current transformer 1,2 terminations connect power supply, and described current transformer 3 terminations connect described current relay coil one termination, and described current transformer 4 terminations connect ground connection behind another termination of described current relay coil.
Signal data calculates decision circuitry and comprises A/D translation circuit, calculates decision circuitry, executive component; Described A/D translation circuit input is exported a termination with described signal data acquisition circuit and is connected, and the output of A/D translation circuit connects described data and calculates decision circuitry, and data are calculated decision circuitry output and connected described executive component; Described executive component output has two terminations, and a termination connects described switching manipulation circuit, and another termination connects described optical transmitter and receiver circuit.
Switching manipulation circuit comprise distribution transformer high-voltage switch gear motor drive mechanism minute, contacting controling circuit, distribution transformer low tension switch motor drive mechanism minute, contacting controling circuit; Switching manipulation circuit input signal calculates decision circuitry, optical transmitter and receiver receiving circuit from signal data respectively;
Wherein, described distribution transformer high-voltage switch gear divides, contacting controling circuit, refers to that the high-voltage switch gear motor drive mechanism of described operation divides, closing circuit;
Described distribution transformer distribution transformer low tension switch divide-shut brake control circuit, refers to the low tension switch motor drive mechanism divide-shut brake loop of described operation.
Optical transmitter and receiver circuit comprises fiber optic cables, optical receiving circuit, optical transmission circuit; Described optical receiving circuit one end connects fiber optic cables, is to receive the signal transmitting from supply intelligent control centre, changes light signal into the signal of telecommunication and sends distribution transformer overcurrent, open-phase intelligent protector to; The other end connects optical transmission circuit, changes the signal of telecommunication of distribution transformer overcurrent, open-phase intelligent protector into light signal and is transmitted to supply intelligent control centre by fiber optic cables.
This distribution transformer overcurrent, open-phase intelligent protector is to utilize advanced electronic technology, develop a kind of for distribution transformer generation overcurrent in service, phase shortage intelligent management, the relatively existing technology of the present invention has outstanding substantive distinguishing features and significant progressive, specifically, this distribution transformer high-low voltage overcurrent phase shortage intelligent protection technological progress, reasonable in design, desirable realization distribution transformer overcurrent in service, phase shortage intelligent management, for electric power netting safe running, will play positive guarantee effect, the concrete advantage of this distribution transformer overcurrent open-phase intelligent protector in service:
Distribution transformer of the present invention overcurrent in service, open-phase intelligent protector; during for distribution transformer generation high-low voltage overcurrent in service, phase shortage accident, maintainer's very first time can rush to repair in time to scene, shortens the accident treatment time; improve amount of power supply, increase enterprise and social benefit.To distribution system intellectualized technology, positive facilitation is also played in development simultaneously.
Strengthen the safe operation management of power distribution network, greatly improved the reliability of power supply, promoted the effect of the safety management integral level of power distribution network.
Accompanying drawing explanation
Fig. 1 is distribution transformer overcurrent of the present invention, open-phase intelligent protector block diagram;
Fig. 2 is signal data acquisition circuit block diagram of the present invention;
Fig. 3 is that signal data of the present invention calculates decision circuitry block diagram;
Fig. 4 is switching manipulation circuit block diagram of the present invention;
Fig. 5 is optical transmitter and receiver the electric circuit constitute block diagram of the present invention
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
Fig. 1 is distribution transformer overcurrent of the present invention, open-phase intelligent protector block diagram, and this device comprises signal data acquisition circuit 1, and signal data calculates decision circuitry 2, switching manipulation circuit 3, optical transmitter and receiver circuit 4;
Described signal data acquisition circuit, from distribution transformer power supply unit system acquisition to signal data, output connects described signal data calculating decision circuitry, optical transmitter and receiver circuit; Signal data calculates decision circuitry output and connects described switching manipulation circuit, optical transmitter and receiver circuit; Optical transmitter and receiver circuit is connected with described switching manipulation circuit, and optical transmitter and receiver circuit connects optical fibre communication cable circuit, and optical fibre communication cable circuit connects distribution intelligent control center.
Signal acquisition circuit, signal judging circuit is arranged on respectively the high and low side of distribution transformer, when a certain side generation overcurrent or disconnected phase, signals collecting decision circuitry, immediately this signal is passed to optical transmitter and receiver circuit radiating circuit and report to the police, operator on duty obtains alarm condition, and the very first time processes to scene at once.
If equipment generation over current fault starting protection, actuating signal is transferred to switching manipulation circuit and carries out this switch trip, and simultaneously by signal light transmission terminal circuit radiating circuit, after on off state is changed, situation is informed electrician.
Fig. 2 is signals collecting of the present invention, decision circuitry winding diagram, and described signals collecting, decision circuitry comprise a current transformer, a current relay; Described Current Mutual Inductance has four terminations, is respectively 1,2,3,4; Described current transformer 1,2 terminations connect power supply, and described current transformer 3 terminations connect described current relay coil one termination, and described current transformer 4 terminations connect ground connection behind another termination of described current relay coil.
When the distribution transformer generation high-low voltage overcurrent of operation, the adhesive of current relay action normally opened contact, passes to this over-current signal the tripping operation of switching manipulation circuit immediately.The melt that a certain phase fuse occurs when the distribution transformer high-low pressure moving fuses or the disconnected phase of other reasons, current relay power-off action normally-closed contact is closed, immediately this default phase signal is passed to optical transmitter and receiver circuit radiating circuit and carry out distant place warning, operator on duty obtains alarm condition, and the very first time processes to scene at once.
Fig. 3 is that signal data of the present invention calculates decision circuitry block diagram, and signal data calculates decision circuitry and comprises: A/D translation circuit 31, calculating decision circuitry 32, executive component 33; Described executive component output has two terminations, and a termination connects described switching manipulation circuit, and another termination connects described optical transmitter and receiver circuit.
Described A/D translation circuit 31 inputs connect described signal data acquisition circuit and export a termination, the output of A/D translation circuit connects described calculating decision circuitry 32, calculate decision circuitry output and connect described executive component 33, executive component is exported a termination and is connected described switching manipulation circuit, and another termination connects described optical transmitter and receiver circuit.
When described data, calculate decision circuitry and from signal acquisition circuit, obtain various signal datas, signal data carries out A/D conversion input and calculates decision circuitry, calculates judgement relatively, and result is exported to executive component, carries out fling-cut switch or warning.
Fig. 4 is switching manipulation the electric circuit constitute block diagram of the present invention, and switching manipulation circuit comprises the contacting controling circuit 41 of transformer high-voltage switch motor structure, the sub-gate control circuit 42 of transformer high-voltage switch motor structure.The sub-gate control circuit 44 of the contacting controling circuit 43 of transformer low voltage switch motor structure, transformer low voltage switch motor structure.
Switching operation signal calculates decision circuitry, optical transmitter and receiver circuit receiving circuit output termination from signal data respectively;
Described high and low pressure switch divides, contacting controling circuit, refers to that the high and low pressure switch motor structure of described operation divides, closing circuit; When high and low pressure switch obtains minute, after switching signal, high and low pressure switch divides automatically, closing operation.When transformer generation overcurrent, transformer overcurrent, open-phase intelligent protector over-current signal send switch trip and warning; At supplying power allocation intelligent centre, send switching operation signal, by fiber optic cables, be transmitted to switching manipulation circuit and operate.
Fig. 5 is optical transmitter and receiver the electric circuit constitute block diagram of the present invention, and optical transmitter and receiver circuit comprises optical receiving circuit 51, optical transmission circuit 52, fiber optic cables 53; Described optical receiving circuit one end connects fiber optic cables, is to receive the signal transmitting from distribution intelligent control center, changes light signal into signal of telecommunication output and sends distribution transformer overcurrent, open-phase intelligent protector to; The other end connects optical transmission circuit, changes distribution transformer overcurrent, the open-phase intelligent protector signal of telecommunication into light signal, by fiber optic cables, is transmitted to distribution intelligent control center.
When distribution transformer overcurrent, open-phase intelligent protector outwards transmit, by optical transmitter and receiver radiating circuit, be carried out in accordance with regulations coding, change the signal of telecommunication into light signal and outwards launch by fiber optic cables.When optical transmitter and receiver receiving circuit receives certain light signal, change signal of telecommunication output into and send distribution transformer overcurrent, open-phase intelligent protector to.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the field are to be understood that: still can modify or part technical characterictic is equal to replacement the specific embodiment of the present invention; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.

Claims (4)

1. distribution transformer overcurrent, an open-phase intelligent protector, is characterized in that: comprise signal data acquisition circuit, signal data calculates decision circuitry, switching manipulation circuit, optical transmitter and receiver circuit;
Wherein, described signal data acquisition circuit, collects signal data output from distribution transformer device systems and connects described signal data calculating decision circuitry, optical transmitter and receiver circuit; Signal data calculates decision circuitry output and connects described switching manipulation circuit, optical transmitter and receiver circuit; Described switching manipulation circuit connects optical transmitter and receiver circuit, and optical transmitter and receiver circuit connects optical fibre communication cable circuit, and optical fibre communication cable circuit connects distribution intelligent control center; Signal data acquisition circuit comprises a current transformer, a current relay; Described current transformer has four terminations, is respectively 1,2,3,4; Described current transformer 1,2 terminations connect power supply, and described current transformer 3 terminations connect described current relay coil one termination, and described current transformer 4 terminations connect ground connection behind another termination of described current relay coil.
2. distribution transformer overcurrent according to claim 1, open-phase intelligent protector, is characterized in that: signal data calculates decision circuitry and comprises A/D translation circuit, calculates decision circuitry, executive component; Described A/D translation circuit input is exported a termination with described signal data acquisition circuit and is connected, and the output of A/D translation circuit connects described data and calculates decision circuitry, and data are calculated decision circuitry output and connected described executive component; Described executive component output has two terminations, and a termination connects described switching manipulation circuit, and another termination connects described optical transmitter and receiver circuit.
3. distribution transformer overcurrent according to claim 1, open-phase intelligent protector, it is characterized in that: switching manipulation circuit comprise distribution transformer high-voltage switch gear motor drive mechanism minute, contacting controling circuit, distribution transformer low tension switch motor drive mechanism minute, contacting controling circuit; Switching manipulation circuit input signal calculates decision circuitry, optical transmitter and receiver receiving circuit from signal data respectively;
Wherein, described distribution transformer high-voltage switch gear motor drive mechanism minute, contacting controling circuit, refer to that the high-voltage switch gear motor drive mechanism of operation divides, closing circuit;
Described distribution transformer low tension switch motor drive mechanism minute, contacting controling circuit, refer to the low tension switch motor drive mechanism divide-shut brake loop of operation.
4. distribution transformer overcurrent according to claim 1, open-phase intelligent protector, is characterized in that: optical transmitter and receiver circuit comprises fiber optic cables, optical receiving circuit, optical transmission circuit; Described optical receiving circuit one end connects fiber optic cables, is to receive the signal transmitting from supply intelligent control centre, changes light signal into the signal of telecommunication and sends distribution transformer overcurrent, open-phase intelligent protector to; The other end connects optical transmission circuit, changes the signal of telecommunication of distribution transformer overcurrent, open-phase intelligent protector into light signal and is transmitted to supply intelligent control centre by fiber optic cables.
CN201010206741.7A 2010-06-11 2010-06-11 Intelligent overcurrent phase-failure protector of distribution transformer Expired - Fee Related CN102280853B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201010206741.7A CN102280853B (en) 2010-06-11 2010-06-11 Intelligent overcurrent phase-failure protector of distribution transformer

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Application Number Priority Date Filing Date Title
CN201010206741.7A CN102280853B (en) 2010-06-11 2010-06-11 Intelligent overcurrent phase-failure protector of distribution transformer

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CN102280853B true CN102280853B (en) 2014-04-09

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102298098A (en) * 2010-06-24 2011-12-28 陈家斌 Intelligent remote phase-missing alarm device for distribution transformer
CN108169615B (en) * 2018-02-11 2020-02-11 南京南瑞继保电气有限公司 Optical CT-based phase failure detection method for starting standby transformer

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BRPI0504296B1 (en) * 2005-10-03 2018-11-21 Pedrosa Santos Eduardo system for control, protection and state monitoring of motors used for forced cooling of power transformers
CN101320909A (en) * 2008-03-28 2008-12-10 国电铭扬（北京）技术有限公司 Protector of transformer
CN201234165Y (en) * 2008-06-06 2009-05-06 陈家斌 Automatic control apparatus for power distribution system
CN201278008Y (en) * 2008-10-23 2009-07-22 山东达驰电气有限公司 Transformer integrated monitor
CN201327997Y (en) * 2008-12-19 2009-10-14 南京因泰莱配电自动化设备有限公司 Protection device of transformer

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