CN101162839B - Circuit relay protection information exchange method and device thereof - Google Patents
Circuit relay protection information exchange method and device thereof Download PDFInfo
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- CN101162839B CN101162839B CN200710133866XA CN200710133866A CN101162839B CN 101162839 B CN101162839 B CN 101162839B CN 200710133866X A CN200710133866X A CN 200710133866XA CN 200710133866 A CN200710133866 A CN 200710133866A CN 101162839 B CN101162839 B CN 101162839B
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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
- 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
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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
- 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
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Abstract
The present invention relates to a line relay protection information exchange method, and comprises performing continuous data communication through optical fiber SDH annular net by a bi-side microcomputer protection device with 2ME1 optical fiber interface, exchanging three-phase voltage, three-phase current and electrical total data information of line voltage on two sides of lines in interrupt mode, calculating the original electrical total data on the side and the electrical total data transmitted through information exchange after T delay by passage from the opposite side to the side applying distance algorithm of the relay principle, getting the fault judge amount of the side and the opposite side and judging and cutting the fault according the calculated result. The device comprises the bi-side microcomputer protection device with 2ME1 optical fiber interface, an photoelectric conversion interface and an optical fiber SDH annular net device. The bi-side microcomputer protection device is connected with the photoelectric conversion interface of the side by the optical fiber, and connected with the optical fiber SDH annular net device by a cable while the bi-side optical fiber annular net devices are connected with each other by the optical fiber.
Description
Technical field
The present invention relates to a kind of relay protecting method and device thereof of electric power system extra high voltage network, relate in particular to based on the method and the device thereof that carry out information exchange and fault verification between the microcomputer protecting device of optical-fibre communications.
Background technology
In the main protection of supertension line protective device, be respectively to be the Current Differential Protection of medium and with optical fiber based on the vhf range protection of protection transceiver passage.It is identical that present fibre-optic current differential protection principle is based on the transceiver channel route, when protective device transceiver passage is walked different route, false synchronia can occur.Though device can not sent out the communication alarm signal when false synchronia occurring, has differential current under the normal duty electric current.The time-delay of transmitting-receiving routing channel differs big more, and big more to the influence of protection, influence will cause the incorrect operation of protection when acquiring a certain degree.Though the optical fiber self-healing looped network of SDH can improve the communication system reliability of operation greatly; but, therefore the SDH optical fiber ring network is directly applied to and have uncertain risk in the Current Differential Protection engineering because optical-fiber longitudinal difference protection need be identical based on route.
Vhf range protection need add channel unit in addition based on the carrier channel of transceiver, transmission be 0,1 voting signal.Be not subjected to synchronously and the advantage of delaying time and influencing though have, the amount of information of transmitting is few, correctly various complex faults in the distinguishing system.For the integrity of test channel, responsiveness is less than optical fiber differential protective simultaneously.Patent of invention " method of directional cirrcuit longitudinal connection protection information exchange and device thereof " (patent No. CN 01110622.0) discloses the method for transmitting pilot protection information with optical-fibre channel; but the information of its transmission remains 0,1 voting signal; only be confined to result, the range finding of fault direction information, select the information of phase and some one-sided result of calculations such as information of transfer trip; can't spy upon the overall picture of electric power system fault, more can't be deeply fault state be carried out deep analysis in conjunction with the of ac of both sides.
Summary of the invention
Technical problem to be solved by this invention is; overcoming existing route protection method is confined to synchronous, the same route of transceiver channel, transmits the few shortcoming of amount of information; provide a kind of based on the new method and the device thereof that carry out information exchange and fault verification between the microcomputer protecting device of optical-fibre communications; asynchronous and take place under the situation of multiple route, make protective device finish the task of excision bilateral fault rapidly and accurately.
The technical solution adopted for the present invention to solve the technical problems is as follows: the method for circuit relay protection information exchange; it is characterized in that carrying out continuous digital communication by optical fiber SDH looped network, with the three-phase voltage U of interrupt mode exchange line bilateral by the bilateral microcomputer protecting device that possesses the 2ME1 optical fiber interface
A, U
B, U
C, three-phase current I
A, I
B, I
C, line voltage distribution U
1AElectric full dose data message, each one-sided distance algorithm of using traditional and ripe relay principle, respectively original electric full dose data of this side and the electric full dose data that are delivered to the offside of this side by information exchange behind communication channel delay T are calculated, calculate the failure criterion of this side and the failure criterion of offside, failure criterion comprises sudden change amount distance, delta Z, apart from I section ZI, apart from II section ZII, start-up criterion QD, multiple failure criterion Fu, weak feedback criterion RK, select phase XX as a result, carry out fault distinguishing and excision according to result of calculation.
It is as follows that the present invention solves the further technical scheme that its technical problem adopts: the device of circuit relay protection information switching method; it is characterized in that forming and comprise bilateral microcomputer protecting device, opto-electronic conversion interface, the optical fiber SDH looped network equipment that possesses the 2ME1 optical fiber interface; the bilateral microcomputer protecting device is connected with the optical fiber SDH looped network equipment of this side by cable connect the opto-electronic conversion interface of this side respectively by optical fiber after again, and bilateral optical fiber SDH looped network equipment interconnects by optical fiber.
Beneficial effect of the present invention is as follows: use the method for information exchange provided by the present invention and fault judgement, the information of exchange is not 0,1 voting signal, but the three-phase voltage U of circuit bilateral
A, U
B, U
C, three-phase current I
A, I
B, I
C, line voltage distribution U
1AElectric full dose data message; the one-sided calculating of carrying out the electric full dose of bilateral simultaneously of each of route protection; the distance algorithm of the relay principle that utilization is traditional and ripe; criterion contains much information; differentiate each other in conjunction with the both sides criterion, can spy on the overall picture of fault, fault state is carried out deep analysis; can reach the purpose of acceleration disturbance tripping operation at the different faults in the electric power system.Realize that the inventive method need not the bilateral data sync; need not to consider the consistency of bilateral communication route; necessary bilateral data sync of bilateral Current Differential Protection method and the identical shortcoming of route have been abandoned; microcomputer protecting device can be connected with optical fiber SDH looped network equipment; improve the communication system reliability of operation greatly, make protective value more perfect.
Description of drawings
Fig. 1 is the inventive method embodiment 1 fault trip criterion logic diagram.
Fig. 2 is the inventive method embodiment 2 fault trip criterion logic diagrams.
Fig. 3 is the inventive method embodiment 3 fault trip criterion logic diagrams.
Fig. 4 is for realizing the apparatus structure schematic diagram of the inventive method.
Fig. 5 is the electrical schematic diagram of microcomputer protecting device among Fig. 4.
Embodiment
With reference to the accompanying drawings and in conjunction with the embodiments the present invention is described in further detail.But the invention is not restricted to given example.
Specifically, the method for circuit relay protection information exchange of the present invention is carried out continuous digital communication by the bilateral microcomputer protecting device that possesses the 2ME1 optical fiber interface by optical fiber SDH looped network, with the three-phase voltage U of interrupt mode exchange line bilateral
A, U
B, UC, three-phase current I
A, I
B, I
C, line voltage distribution U
1AElectric full dose data message, information format is as follows:
| This interrupt number of this side |
| This interrupts receiving the offside interrupt number |
| A phase voltage U A |
| B phase voltage U B |
| C phase voltage U C |
| A phase current I A |
| B phase current I B |
| C phase current I C |
| This interrupt number of this side |
| Line voltage distribution U 1A |
Each is one-sided use tradition and the distance algorithm of ripe relay principle (write " high-voltage fence Principles of Relay Protection and technology " China Electric Power Publishing House referring to Zhu Shengshi, in April, 2005 third edition; Wang Meiyi writes " high-voltage fence relay protected operation and design " China Electric Power Publishing House; in February, 2007 front page); respectively original electric full dose data of this side and the electric full dose data that are delivered to the offside of this side by information exchange behind communication channel delay T are calculated; the size of communication channel delay T determines according to track kilometrage; distinguish out according to 300kM/ms whether route is different between data and continuous next data; T≤5ms during with route; T＜10ms when different route is arranged; calculate the failure criterion of this side and the failure criterion of offside; failure criterion comprises that the sudden change span of this side (M side) is from M Δ Z; apart from I section MZI; apart from II section MZII; start-up criterion MQD; multiple failure criterion MFu; weak feedback criterion MRK; select phase as a result MXX (at the phase of selecting of homodyne; zero-sequence current select phase); and the sudden change span of offside (N side) is from N Δ Z; apart from I section NZI; apart from II section NZII; start-up criterion NQD; multiple failure criterion NFu; weak feedback criterion NRK; select phase as a result NXX (at the phase of selecting of homodyne; zero-sequence current select phase), carry out fault distinguishing and excision according to result of calculation according to representational three kinds of schemes hereinafter:
In embodiment shown in Figure 11, the sudden change span that utilizes the M side is from action, and the action of the II segment distance of N side, utilizes the both sides electric parameters to select the result of phase again, quick and precisely determines fault φ also tripping operation outlet mutually.Fault trip criterion logical formula (1) shown in Figure 1 is as follows:
MXXφ[MQD(MΔZ·MZI)(NZII·NZI)NQD]NXXφ ……(1)
In embodiment shown in Figure 22, utilize the multiple failure criterion of N side, in conjunction with the M side apart from the II section, calculate at M side device and equally correctly to select the φ outlet of tripping mutually when multiple fault takes place the N side.Fault trip criterion logical formula (2) shown in Figure 2 is as follows:
(MQD·MZII)(NFu·NXXφ·NQD) ……(2)
In embodiment shown in Figure 33, when a little less than the M side, presenting, can't correct decision fault overall picture, the multicriterion of calculating in conjunction with the N side result of calculation of M side draws final result, tripping operation outlet rapidly and accurately.Fault trip criterion logical formula (3) shown in Figure 3 is as follows:
(MQD·MRK)[(NZII·NΔZ·NZI)NQD·NXXφ] ……(3)
As shown in Figure 4; the device of circuit relay protection information switching method of the present invention utilizes optical fiber SDH looped network to carry out communication; its composition comprises circuit bilateral microcomputer protecting device; the opto-electronic conversion interface; optical fiber SDH looped network equipment; the bilateral microcomputer protecting device has the A and the B mouth of 2M ability to communicate; the opto-electronic conversion interface that connects this side by optical fiber respectively; the opto-electronic conversion interface casually is converted to the light of the synchronous communication data of microcomputer protecting device the signal of telecommunication of E1 interface; pass to the optical fiber SDH looped network equipment of this side by coaxial cable; the E1 electrical signal conversion that while opto-electronic conversion interface also sends offside is the microcomputer protecting device that light signal passes to this side; bilateral optical fiber SDH looped network equipment interconnects by optical fiber, constitutes the 155M light signal of following the looped network route after the signal of telecommunication of E1 mouth is handled and is passed to offside.
As shown in Figure 5; among the embodiment; the circuit of the microcomputer protecting device in the device of circuit relay protection information switching method of the present invention is formed and is comprised central control chip ARM, digital processing chip TMS320C, communication protocol chip PEF; the control chip ARM of central authorities connects digital processing chip TMS320C by the HPI interface; digital processing chip TMS320C connects communication protocol chip PEF by bus B US; communication protocol chip PEF has the A mouth and the B mouth of 2M ability to communicate; be connected the electric full dose U of circuit bilateral with communication media optical fiber
A, U
B, U
C, I
A, I
B, I
C, U
1ABy the input input of central control chip ARM and digital processing chip TMS320C, the tripping operation output behind the start-up control circuit of TMS320C control of ARM output start-up criterion.ARM handles and to open into, man-machine interface and automation function in the circuit, and TMS320C handles A/B mouth optical-fibre communications and each one-sided protection computing to the electric full dose of circuit bilateral, logic discrimination, start-up control, tripping operation output is carried out, and is the core of this hardware.The model of circuit chip is as follows among the embodiment:
The control chip ARM925T of central authorities,
Digital processing chip TMS320C6713,
Communication protocol chip PEF20532.
Claims (1)
1. the method for circuit relay protection information exchange; it is characterized in that carrying out continuous digital communication by optical fiber SDH looped network by the bilateral microcomputer protecting device of the E1 optical fiber interface that possesses the 2M transmission rate; three-phase voltage U A with interrupt mode exchange line bilateral; UB; UC; three-phase current IA; IB; IC; the electric full dose data message of line voltage distribution U1A; the distance algorithm of each one-sided application relay principle; respectively original electric full dose data of this side and the electric full dose data that are delivered to the offside of this side by information exchange behind communication channel delay T are calculated; calculate the fault distinguishing amount of this side and the fault distinguishing amount of offside; the fault distinguishing amount comprises sudden change amount distance, delta Z; apart from I section ZI; apart from II section ZII; start-up criterion QD; multiple failure criterion Fu; weak feedback criterion RK; select phase XX as a result, carry out fault distinguishing and excision according to result of calculation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710133866XA CN101162839B (en) | 2007-10-24 | 2007-10-24 | Circuit relay protection information exchange method and device thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710133866XA CN101162839B (en) | 2007-10-24 | 2007-10-24 | Circuit relay protection information exchange method and device thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101162839A CN101162839A (en) | 2008-04-16 |
| CN101162839B true CN101162839B (en) | 2010-11-24 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807819B (en) * | 2010-03-12 | 2012-06-20 | 中国南方电网有限责任公司 | Electric line protection system and method for transmitting relay protection signals |
| CN102097784B (en) * | 2011-01-25 | 2014-02-05 | 许继集团有限公司 | Relay protective optical fiber digital interface device |
| CN103414170B (en) * | 2013-07-08 | 2016-07-06 | 南京南瑞继保电气有限公司 | The method for pilot protection of circuit of intelligent substation |
| CN103606908B (en) * | 2013-11-15 | 2017-01-04 | 中国能源建设集团广东省电力设计研究院有限公司 | It is applicable to the protection system of power grid integrated circuit |
| CN104734358B (en) * | 2015-03-20 | 2016-09-21 | 南京国电南自电网自动化有限公司 | A kind of intelligent switch controller with quick outlet loop |
| CN106877299B (en) * | 2017-04-01 | 2018-09-18 | 国网山东省电力公司信息通信公司 | A kind of 500kV substation relay protections system and its test system, test method |
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Owner name: GUODIAN NANNUI TECH CO., LTD. Free format text: FORMER OWNER: STATE NETWORK ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20091218 |
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Effective date of registration: 20091218 Address after: Jiangsu Province, Nanjing high tech Development Zone of High Road No. 20 post encoding: 210061 Applicant after: NARI Technology Development Co., Ltd. Address before: Nanjing City, Jiangsu Province, South ruilu No. 8 post encoding: 210003 Applicant before: Power Science Research Institute of national network Co-applicant before: Nanjing Nari Co., Ltd. |
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Owner name: NARI NANJING CONTROL SYSTEM LTD. Effective date: 20141202 |
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Effective date of registration: 20141202 Address after: High road high tech Development Zone Nanjing city Jiangsu province 210061 No. 20 Patentee after: NARI Technology Development Co., Ltd. Patentee after: SGCC NARI Nanjing Control System Co., Ltd. Address before: 210061 Jiangsu Province, Nanjing high tech Development Zone of High Road No. 20 Patentee before: NARI Technology Development Co., Ltd. |