CN102497029B - Parallel medium resistance line selection apparatus based on IEC 61850 standard and method thereof - Google Patents
Parallel medium resistance line selection apparatus based on IEC 61850 standard and method thereof Download PDFInfo
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- CN102497029B CN102497029B CN201110445974.7A CN201110445974A CN102497029B CN 102497029 B CN102497029 B CN 102497029B CN 201110445974 A CN201110445974 A CN 201110445974A CN 102497029 B CN102497029 B CN 102497029B
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Abstract
The invention discloses a parallel medium resistance line selection apparatus based on an IEC 61850 standard and a method thereof. The line selection apparatus is composed of a voltage transformer, a local intelligent unit, a controller, a GOOSE network switch, a transformer station automation background and an MMS network switch. The voltage transformer samples electrical network neutral point voltage in real time and transmits the voltage to the local intelligent unit. The local intelligent unit completes digitization conversion of the neutral point voltage and transmits the neutral point voltage to the controller through an IEC61850-9-2SMV sampling value protocol. The controller determines whether a system is in single-phase grounding or not according to the neutral point voltage, and simultaneously the controller acquires zero sequence current 3I0 of each outgoing line of a switch cabinet group from the GOOSE network switch through a GOOSE protocol and selects a grounding line when is in grounding. The controller accesses the MMS network switch and sends a line selection result to the transformer station automation back ground in a MMS message format. According to the apparatus and the method of the invention, a data format is completely in accordance with the IEC 61850 standard, and a digitized transformer station requirement is satisfied.
Description
Technical field
The present invention relates to a kind of single-phase grounding selecting technology of distribution network system, relate in particular to a kind of paralleled medium resistance line selection apparatus and corresponding selection method based on IEC61850 standard.
Background technology
The construction of the digital transformer substation based on IEC61850 standard is already in full swing in China, and along with the construction of increasing digital transformer substation, traditional line selection device for low current can not meet the requirement of digital transformer substation.Especially for neutral point, adopt the network system of grounding through arc, during system single-phase earthing, fault current is very little, only has the accuracy of the line selection apparatus guarantee route selection that adopts paralleled medium resistance.
Traditional paralleled medium resistance line selection apparatus is applicable to the network system that neutral point adopts arc suppression coil, during work, can, by Arc Suppression Coil Control, also can control voluntarily.Generally according to neutral point voltage, judge whether system single-phase earthing occurs, by cable, obtain the zero-sequence current of every line switching cabinet, when ground connection occurs, control input and the excision of paralleled medium resistance, thereby obtain, drop into and excision paralleled medium resistance circuit zero-sequence current constantly, according to certain computational methods, find out ground path, and route selection result is transferred to automation backstage.
Publication number is CN101540499A, and open day is the patent document of on September 23rd, 2009 (application number is 200910029854.1), and it has recorded " central value resistance grounding quick-circuit selecting trip gear in urban distribution network and selection method ".
But said apparatus and selection method can not meet the communication need of IEC61850, cannot be applicable to the requirement of digital transformer substation, be badly in need of for this reason exploitation a kind of the paralleled medium resistance selection method that digital transformer substation requires that meets based on IEC61850 standard.
Summary of the invention
The present invention is directed to the communication need that existing apparatus and selection method can not meet IEC61850, cannot be applicable to the problem of digital transformer substation requirement, and a kind of paralleled medium resistance line selection apparatus based on IEC61850 standard is provided, a kind of paralleled medium resistance selection method based on IEC61850 standard is also provided simultaneously.The present invention is by making the digitlization of neutral point voltage sampling, the digitlization of zero-sequence current sampling, the networking of the digital control of paralleled medium resistance and automation Background communication, thereby realize data transmission network, make data format meet IEC61850 standard completely, be satisfied with digital transformer substation requirement.
In order to achieve the above object, the present invention adopts following technical scheme:
A paralleled medium resistance line selection apparatus based on IEC61850 standard, this device comprises voltage transformer, intelligent cell, controller, the GOOSE network switch, automation of transformation substations backstage, the MMS network switch on the spot; Described voltage transformer real-time sampling neutral point of electric network voltage, and intelligent cell on the spot described in reaching; Described intelligent cell on the spot completes neutral point voltage digitlization and transforms, and is transferred to controller by IEC61850-9-2SMV sampled value stipulations; Described controller judges according to neutral point voltage whether system single-phase earthing occurs, and described controller obtains the zero-sequence current 3I0 of every outlet of switch group from described GOOSE network switch by GOOSE stipulations simultaneously, and when ground connection, selects ground path; The described controller access MMS network switch, sends to automation of transformation substations backstage by route selection result with MMS message format.
A paralleled medium resistance selection method based on IEC61850 standard, the method comprises the steps:
(1) by the service of IEC61850-9-2SMV sampled value, gather neutral point voltage;
(2) according to neutral point voltage, judge whether system single-phase earthing occurs, and by GOOSE stipulations, from GOOSE network switch, obtain the zero-sequence current 3I0 of every outlet of line switching group;
(3) when ground connection occurs, control input, the excision of paralleled medium resistance, record is also selected ground path according to the circuit zero-sequence current before paralleled medium resistance input, after input;
(4) route selection result sends to automation of transformation substations backstage with MMS message format.
Further, accessible N bar outlet in above-mentioned steps (2).
Further, in above-mentioned steps (3), adopt comprehensive selection method of queuing up contrast to select the circuit that single-phase earthing occurs.
The present invention who obtains according to technique scheme has the following advantages:
(1) all signals that, the present invention relates to are realized in-situ digitalization, data transmission network.Communication media conventionally adopts optical fiber but is not limited to optical fiber.
(2), the inventive method neutral point voltage sampling meets IEC61850-9-2 < < particular communication service mapping (SCSM)-by the sampled value > > standard of ISO/IEC8802-3, the analog signal that both can meet conventional voltage instrument transformer turns digitized requirement, also can meet the signal sampling of digitized voltage instrument transformer.Neutral point voltage adopts Optical Fiber Transmission.
(3), the inventive method adopts the GOOSE network switch of optical cable or netting twine access intelligent switchboard, by GOOSE stipulations, obtains circuit zero-sequence current 3I0.
(4), the digitlization of the whole control procedure round Realization of the inventive method, meet IEC61850 standard-required, adopt control command and the state state feedback of resistance in GOOSE stipulations transmission parallel connection.
(5), the automation background network communication of the inventive method adopts the manufacture message specification MMS Standards Code that meets IEC61850 standard-required completely, for transmitting remote signalling service and remote measurement service.
(6) the paralleled medium resistance line selection apparatus that, the inventive method goes for isolated operation also can with digital arc suppression coil and paralleled medium resistance the complete sets of equipment.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention.
Fig. 1 is the schematic diagram of apparatus of the present invention.
Fig. 2 is the flow chart of the inventive method.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Referring to Fig. 1, paralleled medium resistance line selection apparatus based on IEC61850 standard provided by the invention, its formation comprises paralleled medium resistance primary equipment cabinet 1, voltage transformer 2, intelligent cell 3, controller 4, line switching group 5, the process layer GOOSE network switch 6, automation of transformation substations backstage 7, the MMS network switch 8 on the spot.
Paralleled medium resistance primary equipment cabinet 1 and adopt on the spot cable to connect between intelligent cell 3 wherein, control signal and the feedback signal of transmission paralleled medium resistance.
Voltage transformer 2 and adopt on the spot cable to connect between intelligent cell 3, the analog signals of transmission neutral point voltage.
Between intelligent cell 3 and controller 4, adopt on the spot optical cable to connect, transmission meets the neutral point voltage of IEC61850-9-2SMV sampled value stipulations, meets control signal and the feedback signal of the paralleled medium resistance of GOOSE stipulations.
Between controller 4 and the GOOSE network switch 6, adopt optical cable or netting twine to connect, transmission meets the circuit zero-sequence current 3I0 of GOOSE stipulations.
Between controller 4 and the MMS network switch 8, optical fiber or netting twine connect, and the route selection result of transmission MMS message format is to automation of transformation substations backstage 7.
Referring to Fig. 2, the paralleled medium resistance selection method based on IEC61850 standard providing, it comprises the steps:
(I) by the service of IEC61850-9-2SMV sampled value, gather neutral point voltage;
(II) according to neutral point voltage, judge whether system single-phase earthing occurs, and by GOOSE stipulations, from GOOSE network switch, obtain the zero-sequence current 3I0 of every outlet of line switching group;
(III) when ground connection occurs, control input, the excision of paralleled medium resistance, record is also selected ground path according to the circuit zero-sequence current before paralleled medium resistance input, after input;
(IV) route selection result sends to automation of transformation substations backstage with MMS message format.
Based on such scheme, specific embodiment of the invention is as follows:
The first step, voltage transformer 2 real-time sampling neutral point of electric network voltages are given intelligent cell 3 on the spot.
Second step, intelligent cell 3 completes neutral point voltage digitlization conversion and is transferred to controller 4 by IEC61850-9-2SMV sampled value stipulations on the spot.
The 3rd step, controller 4 judges according to neutral point voltage whether system single-phase earthing occurs, and obtains the zero-sequence current 3I0 of every outlet of switch group 5 with Time Controller 4 by GOOSE stipulations from GOOSE network switch 6, accessible N (N=1,2 ..., n-1, n) bar outlet.
The 4th step, when ground connection occurs, input, the excision of controller control paralleled medium resistance, and record the circuit zero-sequence current 3I0 before paralleled medium resistance input, after input, the selection method that adopts comprehensive queuing to contrast is selected the circuit of generation single-phase earthing.
The 5th step, the controller 4 access MMS network switchs 8, send to automation of transformation substations backstage 7 by route selection result with MMS message format, complete whole route selection process.
Such scheme has solved the problem that traditional paralleled medium resistance line selection apparatus can not be applicable to digital transformer substation, and the present invention is suitable for but is not limited to the network system that digital transformer substation neutral point adopts the route selection of grounding through arc paralleled medium resistance.
More than show and described basic principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (4)
1. the paralleled medium resistance line selection apparatus based on IEC61850 standard, it is characterized in that, described line selection apparatus comprises paralleled medium resistance primary equipment cabinet, voltage transformer, intelligent cell, controller, the GOOSE network switch, automation of transformation substations backstage, the MMS network switch on the spot;
Described paralleled medium resistance primary equipment cabinet and adopt on the spot cable to connect between intelligent cell, joins between described paralleled medium resistance primary equipment cabinet and voltage transformer; Described voltage transformer and adopt on the spot cable to connect between intelligent cell; Between described intelligent cell on the spot and controller, adopt optical cable to connect; Between described controller and the GOOSE network switch, adopt optical cable or netting twine to connect, between described controller and the MMS network switch, optical fiber or netting twine connect;
Described paralleled medium resistance primary equipment cabinet is to control signal and the feedback signal of the transmission of intelligent cell on the spot paralleled medium resistance; Described voltage transformer real-time sampling neutral point of electric network voltage, and intelligent cell on the spot described in reaching; Described intelligent cell on the spot completes neutral point voltage digitlization and transforms, and is transferred to controller by IEC61850-9-2SMV sampled value stipulations; Described controller judges according to neutral point voltage whether system single-phase earthing occurs, and described controller obtains the zero-sequence current 3I0 of every outlet of switch group from described GOOSE network switch by GOOSE stipulations simultaneously, and when ground connection, selects ground path; The described controller access MMS network switch, sends to automation of transformation substations backstage by route selection result with MMS message format.
2. the paralleled medium resistance selection method based on IEC61850 standard, is characterized in that, described selection method comprises the steps:
(1) voltage transformer real-time sampling neutral point of electric network voltage is given intelligent cell on the spot, and paralleled medium resistance primary equipment cabinet is to control signal and the feedback signal of intelligent cell transmission paralleled medium resistance on the spot;
(2) intelligent cell completes neutral point voltage digitlization conversion and is transferred to controller by IEC61850-9-2SMV sampled value stipulations on the spot;
(3) controller judges according to neutral point voltage whether system single-phase earthing occurs, and obtains the zero-sequence current 3I0 of every outlet of switch group with Time Controller by GOOSE stipulations from GOOSE network switch;
(4) when ground connection occurs, controller is controlled input, the excision of paralleled medium resistance, and records the circuit zero-sequence current 3I0 before paralleled medium resistance input, after input, selects the circuit that single-phase earthing occurs;
(5) the controller access MMS network switch, sends to automation of transformation substations backstage by route selection result with MMS message format, completes whole route selection process.
3. a kind of paralleled medium resistance selection method based on IEC61850 standard according to claim 2, is characterized in that, accessible N bar outlet in described step (3).
4. a kind of paralleled medium resistance selection method based on IEC61850 standard according to claim 2, is characterized in that, adopts comprehensive selection method of queuing up contrast to select the circuit that single-phase earthing occurs in described step (4).
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| CN201110445974.7A CN102497029B (en) | 2011-12-27 | 2011-12-27 | Parallel medium resistance line selection apparatus based on IEC 61850 standard and method thereof |
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| CN102497029B true CN102497029B (en) | 2014-03-26 |
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| CN109634893B (en) * | 2018-11-12 | 2020-06-16 | 西北工业大学 | Multi-channel extensible cable line selector labeling device and line selection method |
| CN110456218B (en) * | 2019-08-08 | 2021-09-21 | 三峡大学 | Rapid fault line selection method based on power frequency increment coefficients before and after medium resistance switching |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101447122A (en) * | 2008-12-08 | 2009-06-03 | 中国电力科学研究院 | Intelligent device for collecting, transmitting and controlling data of substation |
| CN101540499A (en) * | 2009-03-19 | 2009-09-23 | 江苏省电力公司南京供电公司 | Fast line selection tripping device for medium resistance grounding for urban distribution network and line selection method |
| CN101719662A (en) * | 2009-11-06 | 2010-06-02 | 北京衡天北斗科技有限公司 | Fault line selection device for distribution line of small-current grounding system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7443308B2 (en) * | 2006-03-16 | 2008-10-28 | Adc Dls Systems, Inc. | Enhanced AC immunity in ground fault detection |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101447122A (en) * | 2008-12-08 | 2009-06-03 | 中国电力科学研究院 | Intelligent device for collecting, transmitting and controlling data of substation |
| CN101540499A (en) * | 2009-03-19 | 2009-09-23 | 江苏省电力公司南京供电公司 | Fast line selection tripping device for medium resistance grounding for urban distribution network and line selection method |
| CN101719662A (en) * | 2009-11-06 | 2010-06-02 | 北京衡天北斗科技有限公司 | Fault line selection device for distribution line of small-current grounding system |
Non-Patent Citations (2)
| Title |
|---|
| 李新永.采用暂态原理配合中值电阻的小电流接地选线技术.《第十一届全国石油和化学工业电气技术年会论文集 》.2010,158-160. |
| 采用暂态原理配合中值电阻的小电流接地选线技术;李新永;《第十一届全国石油和化学工业电气技术年会论文集 》;20101101;158-160 * |
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Effective date of registration: 20191227 Address after: 201108 building 3 and 4, No. 4399, Jindu Road, Minhang District, Shanghai Patentee after: Shanghai Sieyuan Opti-Electronic Co., Ltd. Address before: 201108, No. 4399 Jin Du Road, Shanghai, Minhang District Patentee before: Siyuan Electric Co., Ltd. |
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