CN106788690A - Multistage circuit Unit protection system and method - Google Patents
Multistage circuit Unit protection system and method Download PDFInfo
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- CN106788690A CN106788690A CN201611019428.6A CN201611019428A CN106788690A CN 106788690 A CN106788690 A CN 106788690A CN 201611019428 A CN201611019428 A CN 201611019428A CN 106788690 A CN106788690 A CN 106788690A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/03—Arrangements for fault recovery
- H04B10/032—Arrangements for fault recovery using working and protection systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
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Abstract
The invention discloses a kind of multistage circuit Unit protection system and method.The multistage circuit includes：It is Bulk Supply Substation, several from transformer station, and it is connected to Bulk Supply Substation and from the transmission line of electricity between transformer station, the system includes：Protected host, protection slave, optical line terminal, optical network unit and optical fiber；Protected host and optical line terminal are in the main transformation station；Protection slave and optical network unit are located at from transformation station；Protected host is connected by optical line terminal with optical fiber；Protection slave is connected by optical network unit with optical fiber.The present invention utilizes the time-delay characteristics and network scalability of the fast and stable of the point-to-point communication of Ethernet passive optical network; one optical line terminal can be communicated by between passive optical splitters and multiple optical network units; can flexible expansion multi-point circuit Unit protection slave number; the Unit protection of multiterminal transmission line of electricity is realized, the distal end configuration and information for realizing device are called.
Description
Technical field
The present invention relates to Relay Protection Technology in Power System field, more particularly to a kind of multistage circuit Unit protection system
System and method.
Background technology
With the propulsion of Chinese Urbanization development process, urban land resource growing tension, transmission of electricity gallery and switchyard choosing
Location is increasingly difficult, increasing T circuits is occurred in that in urban power network planning construction, even occurs in that multistage T connects (π connects) line
Road.The increasingly complicated mode of connection of correspondence, route protection particularly main protection need to be reconfigured.
Longitudinal differential protection system is, when line failure, both sides is switched a kind of protection device of fast trip simultaneously,
It is the main protection of circuit.Unit protection is the fault direction that alternative route two ends are each seen, is line-internal to judge
Failure or external fault.If the fault direction seen during with protected circuit internal fault is as positive direction, when being protected
During circuit external fault, always there is side it is seen that opposite direction.
For traditional double line terminal, its main protection generally configures differential protection or Unit protection.Traditional pilot direction
Protection is generally using carrier channel or optical-fibre channel as communication port.Because carrier channel antijamming capability is poor, have progressively
The trend replaced by optical-fibre channel.But optical-fibre channel is typically due to using point-to-point mode, if being used for multi-point circuit, it can expand
Malleability is relatively poor.
The content of the invention
Goal of the invention of the invention is to provide a kind of multistage circuit Unit protection system and method, solves multi-section-line
The problem of road Unit protection autgmentability difference.
First aspect according to embodiments of the present invention, there is provided a kind of multistage circuit Unit protection system, the multistage
Circuit includes：It is provided with the Bulk Supply Substation of main bus-bar and main circuit breaker, is provided with from bus and from the several from transformer station of breaker, with
And the Bulk Supply Substation and the transmission line of electricity between transformer station are connected to, the system includes：Protected host, protection from
Machine, optical line terminal, optical network unit and optical fiber；
The protected host and the optical line terminal are in the main transformation station；
The protection slave and the optical network unit are located at described from transformation station；
The protected host is connected by the optical line terminal with the optical fiber；
The protection slave is connected by the optical network unit with the optical fiber；
The optical fiber is made up of a fibre core.
The protected host is used to obtain Fisrt fault discriminating direction result according to the main bus-bar；Receive the second failure side
To differentiation result；Differentiate that result judges the multistage according to the Fisrt fault discriminating direction result and second fault direction
Whether circuit breaks down；If the multistage line failure, the protected host sends the main circuit breaker and institute
State the trip signal from breaker；
The protection slave according to described for synchronously obtaining the second fault direction differentiation result from bus.
Further, in described multistage circuit Unit protection system, the optical line terminal and the optical-fiber network
Unit only transmits commercial data.
Further, in described multistage circuit Unit protection system, the optical line terminal and the optical-fiber network
Unit is made up of special chip or field programmable gate array.
Second aspect according to embodiments of the present invention, there is provided a kind of multistage circuit Unit protection method, for above-mentioned
Multistage circuit Unit protection system, the described method comprises the following steps：
The protected host obtains Fisrt fault discriminating direction result according to main bus-bar；
The protected host receives the second fault direction and differentiates result, and second fault direction differentiates that result is the guarantor
Shield slave is synchronously obtained according to from bus；
The protected host differentiates that result is sentenced according to the Fisrt fault discriminating direction result and second fault direction
Whether the multistage circuit that breaks breaks down；
If the multistage line failure, the protected host sends the main circuit breaker and described from breaker
Trip signal.
Further, in the multistage circuit Unit protection method, the protected host receives the second fault direction
Differentiate result, specially：Sentenced by proprietary protocol exchange trouble direction between the optical line terminal and the optical network unit
Other object information, or SMV, GOOSE message and MMS messages are exchanged by the agreements of IEC 61850.
Further, in the multistage circuit Unit protection method, the optical line terminal and the optical-fiber network list
SMV, GOOSE message and MMS messages are exchanged by the agreements of IEC 61850 between unit, specially：The SMV, the GOOSE are reported
Literary and described MMS messages bandwidth allocation is using fixed polling cycle and the method for Dynamic Bandwidth Allocation.
Further, in the multistage circuit Unit protection method, the SMV, GOOSE message and MMS message bands
Method of the width distribution using polling cycle and Dynamic Bandwidth Allocation is fixed, specially：
Set a kind of new REPORT to upload and/or GATE issuing mechanisms, upstream bandwidth is divided into the SMV, described
GOOSE message, the class of MMS messages three, set three priority, and the SMV highest priorities, the GOOSE message is taken second place,
The MMS messages are minimum.
Further, in the multistage circuit Unit protection method, second fault direction differentiates that result is institute
State what protection slave was synchronously obtained according to from bus, specially：Using compensation of delay means or IEEE 1588 to when mode
Realize sample information synchronization.
Further, in the multistage circuit Unit protection method, the use compensation of delay means or IEEE
Mode realizes sample information synchronization at 1588 pairs, specially：
The optical line terminal according to internal crystal oscillator, be synchronized with external GPS or big dipper clock, output pulse per second (PPS) or to Times
Text is to the protected host；
The sampling pulse of the protected host be synchronized with the optical line terminal pulse per second (PPS) or pair when message；
The optical network unit is realized by the pulse per second (PPS) of compensation of delay means or IEEE 1588 and the optical line terminal
At synchronous pair, and export pulse per second (PPS) or pair when message；
It is described protection slave sampling pulse be synchronized with the optical network unit pulse per second (PPS) or pair when message.
A kind of multistage circuit Unit protection system and method provided from above technical scheme, the present invention.Institute
Stating multistage circuit includes：It is provided with the Bulk Supply Substation of main bus-bar and main circuit breaker, is provided with from bus and from the several from change of breaker
Power station, and the Bulk Supply Substation and the transmission line of electricity between transformer station are connected to, the system includes：Protection master
Machine, protection slave, optical line terminal, optical network unit and optical fiber；The protected host and the optical line terminal are located at described
In main transformation station, described to protect slave and the optical network unit located at described from transformation station, the protected host passes through institute
State optical line terminal to be connected with the optical fiber, the protection slave is connected by the optical network unit with the optical fiber, described
Optical fiber is made up of a fibre core.Methods described includes：Protected host obtains Fisrt fault discriminating direction result according to main bus-bar；Institute
State protected host and receive the second fault direction and differentiate result, second fault direction differentiate result be the protection slave according to
It is described from bus synchronously obtain；The protected host is according to the Fisrt fault discriminating direction result and the second failure side
Judge whether the multistage circuit breaks down to differentiation result.The present invention utilizes the point-to-point communication of Ethernet passive optical network
Fast and stable time-delay characteristics and network scalability, optical line terminal can be by passive optical splitters and multiple light nets
Communicated between network unit, the present invention can flexible expansion multi-point circuit Unit protection slave number, realize multiterminal transmit electricity
The Unit protection of circuit；And it is real on the basis of SMV, the fast and reliable transmission of GOOSE message, moreover it is possible to transmit MMS messages
The distal end configuration of existing device and information are called.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing for needing to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also obtain according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is a kind of multistage circuit Unit protection system structure diagram exemplified according to implementation；
Fig. 2 is another multistage circuit Unit protection system structure diagram exemplified according to implementation；
Fig. 3 is a kind of multistage circuit Unit protection method flow diagram exemplified according to implementation；
Fig. 4 is the schematic diagram according to the fixed polling cycle for implementing to exemplify and dynamic bandwidth allocation mechanism.
Illustrate：
Wherein, the main transformation stations of 1-, 2- main bus-bars, 3- main circuit breakers, 4- protected hosts, 5- transmission lines of electricity, 6- optical fiber, 7- from
Transformer station, 8- protects slave, 11- optical line terminals, 12- optical network units from bus, 9- from breaker, 10-.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Whole description, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
According to the first aspect of the invention, there is provided a kind of multistage circuit Unit protection system.
Embodiment one
Fig. 1 is referred to, a kind of multistage circuit Unit protection system, the multistage circuit bag is present embodiments provided
Include：It is provided with the Bulk Supply Substation 1 of main bus-bar 2 and main circuit breaker 3, is provided with from bus 8 and from the several from transformer station 7 of breaker 9, with
And the Bulk Supply Substation 1 and the transmission line of electricity 5 between transformer station 7 are connected to, the system includes：Protected host 4, guarantor
Shield slave 10, optical line terminal 11, optical network unit 12 and optical fiber 6；
The protected host 4 and the optical line terminal 11 are in the main transformation station 1；
The protection slave 10 and the optical network unit 12 are located at described from transformation station 7；
The protected host 4 is connected by the optical line terminal 11 with optical fiber 6；
The protection slave 10 is connected by the optical network unit 12 with optical fiber 6；
The optical fiber 6 is made up of a fibre core；
The protected host 4 is used to obtain Fisrt fault discriminating direction result according to main bus-bar 2；Receive the second fault direction
Differentiate result；Differentiate that result judges the multi-section-line according to the Fisrt fault discriminating direction result and second fault direction
Whether break down on road；If the multistage line failure, the protected host 4 sends the main circuit breaker 3 and institute
State the trip signal from breaker 9；
The protection slave 10 is used to differentiate result from synchronous second fault direction that obtains of bus 8 according to described.
A kind of course of work of multistage circuit Unit protection system of the invention is：Protection slave 10 is obtained by synchronous
Take from the second fault direction of bus 8 and differentiate result, and passed through EPON and be sent to protected host 4 in real time.Protection master
The Fisrt fault discriminating direction result and the second fault direction of the light protection transmission of slave 10 that machine 4 is gathered according to main bus-bar 2 differentiate
Result is judging whether the multistage circuit breaks down.If multistage line failure, main circuit breaker 3 is jumped and from breaker 9
With isolated fault.
The present invention can be expanded using the time-delay characteristics and network of the fast and stable of the point-to-point communication of Ethernet passive optical network
Malleability a, optical line terminal can be communicated by between passive optical splitters and multiple optical network units, and the present invention can spirit
Extension multi-point circuit Unit protection slave number living, realizes the Unit protection of multiterminal transmission line of electricity；And SMV,
On the basis of the fast and reliable transmission of GOOSE message, moreover it is possible to transmit MMS messages, the distal end configuration and information for realizing device are called.
Further, in described multistage circuit Unit protection system, the optical line terminal 11 and the light net
12 transmission commercial datas of network unit.The optical line terminal 11 and optical network unit 12 of Ethernet passive optical network is supported to be different from
Family online is conventionally used to, the optical line terminal 11 and optical network unit 12 of commercial data is only transmitted, its management function can phase
To simplification, quick, the transmitting of the high-precise synchronization and message between optical line terminal 11 and optical network unit 12 are realized.
Further, in described multistage circuit Unit protection system, the optical line terminal 11 and the light net
Network unit 12 is made up of special chip or field programmable gate array.Optical line terminal 11 and the management function phase of optical network unit 12
To simplification, quick, the transmitting of existing high-precise synchronization and message between optical line terminal 11 and optical network unit 12.
Embodiment two
Fig. 2 is referred to, another multistage circuit Unit protection system is present embodiments provided, in optical line terminal 11
It is placed in the protected host 4；Optical network unit 12 is built in the protection slave 10；The multistage circuit longitudinal that the present embodiment is provided
The multistage circuit Unit protection system that the other structures of direction protection system are provided with reference to embodiment one, no longer goes to live in the household of one's in-laws on getting married herein
State.
A kind of multistage circuit Unit protection system provided from above technical scheme, the present invention.The multistage
Circuit includes：It is provided with the Bulk Supply Substation 1 of main bus-bar 2 and main circuit breaker 3, is provided with from bus 8 and from the several from power transformation of breaker 9
Stand 7, and be connected to the Bulk Supply Substation 2 and the transmission line of electricity 5 between transformer station 7, the system includes：Protection master
Machine 4, protection slave 10, optical line terminal 11, optical network unit 12 and optical fiber 6；The protected host 4 and the optical line terminal
11 in the main transformation station 1；The protection slave 10 and the optical network unit 12 are located at described from transformation station 7；Institute
Protected host 4 is stated to be connected with optical fiber 6 by the optical line terminal 11；The protection slave 10 passes through the optical network unit 12
It is connected with optical fiber 6；The optical fiber 6 is made up of a fibre core.The present invention is using the point-to-point communication of Ethernet passive optical network
The time-delay characteristics and network scalability of fast and stable, an optical line terminal can be by passive optical splitters and multiple optical-fiber networks
Communicated between unit, the present invention can flexible expansion multi-point circuit Unit protection slave number, realize multiterminal power transmission line
The Unit protection on road；And on the basis of SMV, the fast and reliable transmission of GOOSE message, moreover it is possible to transmit MMS messages, realize
The distal end configuration of device and information are called.
According to the second aspect of the invention, there is provided a kind of multistage circuit Unit protection method.
Fig. 3 is referred to, a kind of multistage circuit Unit protection method is present embodiments provided, for of the invention first
The multistage circuit Unit protection system that aspect is provided, the described method comprises the following steps：
Step S1, the protected host obtain Fisrt fault discriminating direction result according to main bus-bar；
Step S2, the protected host receive the second fault direction and differentiate result, and second fault direction differentiates result
It is that the protection slave is synchronously obtained according to from bus；
Step S3, the protected host differentiate according to the Fisrt fault discriminating direction result and second fault direction
Result judges whether the multistage circuit breaks down；
If the multistage line failure, performs S4；
Step S4, the protected host send the main circuit breaker and the trip signal from breaker.
The present invention can be expanded using the time-delay characteristics and network of the fast and stable of the point-to-point communication of Ethernet passive optical network
Malleability a, optical line terminal can be communicated by between passive optical splitters and multiple optical network units, and the present invention can spirit
Extension multi-point circuit Unit protection slave number living, realizes the Unit protection of multiterminal transmission line of electricity；And SMV,
On the basis of the fast and reliable transmission of GOOSE message, moreover it is possible to transmit MMS messages, the distal end configuration and information for realizing device are called.
Further, in the multistage circuit Unit protection method, the protected host 4 receives the second fault direction
Differentiate result, specially：Pass through proprietary protocol exchange trouble side between the optical line terminal 11 and the optical network unit 12
To differentiation object information, or SMV, GOOSE message and MMS messages are exchanged by the agreements of IEC 61850.Route protection main frame and from
SMV, GOOSE message and MMS messages are exchanged with the agreements of IEC 61850 between machine, realizes that line fault direction is sentenced with above-mentioned message
Other result transmission, realizes that the configuration of a route protection distant place and information are called.
Further, in the multistage circuit Unit protection method, the optical line terminal 11 and the optical-fiber network
SMV, GOOSE message and MMS messages are exchanged by the agreements of IEC 61850 between unit 12, specially：It is the SMV, described
GOOSE message and the MMS messages bandwidth allocation are using fixed polling cycle and the method for Dynamic Bandwidth Allocation.Using fast pulley
SMV, GOOSE and MMS message are quick for communicating during the method for inquiry cycle and Dynamic Bandwidth Allocation solves IEC61850 agreements
Property, the coordination problem of reliability；Ensure that 4000 points per second of SMV is transmitted at equal intervals, whether GOOSE message switching value is conjugated with dynamic
Interval transmitting, while ensuring the efficiency of transmission of MMS messages.
Further, in the multistage circuit Unit protection method, the SMV, GOOSE message and MMS message bands
Method of the width distribution using polling cycle and Dynamic Bandwidth Allocation is fixed, specially：
Set a kind of new REPORT to upload and/or GATE issuing mechanisms, upstream bandwidth is divided into the SMV, described
GOOSE message, the class of MMS messages three, set three priority, and the SMV highest priorities, the GOOSE message is taken second place,
The MMS messages are minimum.
Fig. 4 is referred to, in each polling cycle, optical line terminal issues GATE twice and awards to each optical network unit
Power, the GATE for issuing for the first time is authorized includes highest priority traffic (SMV) bandwidth authorizing, such as G1, G2, G'1, G'2, second
The GATE for issuing is authorized includes the bandwidth authorizing of middle priority service (GOOSE message) and low priority traffice (MMS messages), such as
Gs1, Gs2, Gs'1 and Gs'2.
Optical network unit 1 (ONU1) uploads SMV first in G1 authorized windows, and one is and then uploaded after SMV
REPORT messages, during optical network unit bandwidth application, are separately applied by three priority levels, and optical line terminal receives ONU1 uploads
REPORT messages when, SMV bandwidth applications are allocated immediately first, and issue one mandate G'1 to ONU1；Similarly, light
NE 2 (ONU2) does same treatment in G2 authorized windows；Receive what all optical network units were uploaded in optical line terminal
After REPORT messages, in counting all optical network units, low priority bandwidth application, plan as a whole distribution bandwidth, and will in, it is low excellent
The bandwidth of first level traffic assignments is authorized to issue and reports to corresponding optical network unit by Gs'1, Gs'2.
This algorithm is according to the REPORT messages received in n-th polling cycle, to band in (N+1) individual polling cycle
Width carries out dynamically distributes.Dynamic bandwidth allocation algorithm calculating treatmenting time is can be seen that from above-mentioned principles illustrated, and is not take up band
Resource wide, does not exist any idle bandwidth and wastes in the whole Dynamic Bandwidth Allocation cycle.
This algorithm uses the sub-distribution of bandwidth three issuing mechanism twice：It is preferential that optical line terminal presses tri- kinds of SMV, GOOSE and MMS
Level is sequentially completed the bandwidth allocation to three types business；High priority SMV service bandwidths are individually with a GATE entitlement message
Issue；In, low priority GOOSE, MMS service bandwidth, in order to avoid frequently issue excessively GATE messages cause to take it is excessive descending
Bandwidth resources, GOOSE, MMS service bandwidth is merged into during a GATE is authorized and is issued.
Each dynamic bandwidth polling cycle is artificially divided into two sections by this algorithm：SMV uploads part Tup and GOOSE, MMS
Part Tdown, Tdba=Tup+Tdown are uploaded, Tup=TN/2, Tup and Tdown is set during initialization schematically illustrate such as Fig. 1 institutes
Show.Within the Tup time periods, when optical line terminal receives the REPORT messages of optical network unit upload, immediately in REPORT
Highest priority traffic (SMV) bandwidth application of application is authorized, and issues a mandate GATE to optical network unit, and more
Tup values in new polling cycle once；At the end of Tup windows, optical line terminal starts to count all optical network units uploads
GOOSE, MMS bandwidth application, first successively to middle priority service (GOOSE message) bandwidth of all optical network unit applications
Application carries out bandwidth allocation, then again successively to low priority traffice (MMS messages) bandwidth of the application of all optical network units
Application carries out bandwidth allocation, and finally GOOSE, MMS bandwidth authorizing are merged into a mandate GATE and corresponding light is handed down to
NE.
Wherein, Tup is that SMV uploads part；Tdown is GOOSE, and MMS uploads part；SV1, SV2 are respectively ONU1, ONU2
SMV in n-th BDA polling cycles；R1, R2 are respectively the REPORT reports of ONU1, ONU2 in n-th BDA polling cycles
Text；G1, G2 are respectively OLT and ONU1, ONU2 are handed down in n-th BDA polling cycles in the N+1 BDA polling cycle
The authorized window for transmitting SV1, SV2；GOOSE1, MMS1, GOOSE2, MMS2 are respectively ONU1, ONU2 in n-th BDA
GOOSE message and MMS messages in polling cycle；Gs1, Gs2 are respectively OLT and are handed down in n-th BDA polling cycles
The authorized window for transmitting GOOSE1, MMS1, GOOSE2, MMS2 that ONU1, ONU2 are used in the N+1 BDA polling cycle.
Using two kinds of bandwidth authorizings, three kinds of different bandwidth priority distribution；Wherein first bandwidth authorizing is used for IEC
61850 SMV transmission, second bandwidth authorizing is used for GOOSE message and MMS the messages transmission of the agreements of IEC 61850, Liang Zhechong
Preferential distribution bandwidth is to GOOSE message when prominent.Why two kinds of bandwidth authorizings are used, be first in order to ensure each polling cycle
Interior, all optical network units can obtain window mandate, it is ensured that real-time and reliability that each SMV is uploaded.By GOOSE and MMS
Mandate unification, be, in order to reduce mandate expense, to improve communication efficiency, authorized at second in, when GOOSE and MMS bandwidth Shen
When please conflict, band preference is distributed into GOOSE message, be the requirement in order to ensure GOOSE message to real-time.
Further, in the multistage circuit Unit protection method, second fault direction differentiates that result is institute
State protection slave 10 to be obtained from bus 8 is synchronous according to described, specially：Using compensation of delay means or ieee standard pair when side
Formula realizes sample information synchronization.Mode realizes that sample information can synchronously make event during using compensation of delay means or ieee standard pair
Barrier discriminating direction result is more accurate, it is to avoid produce error because the time is inaccurate.
Further, in the multistage circuit Unit protection method, the use compensation of delay means or IEEE
Mode realizes sample information synchronization at 1588 pairs, specially：
The optical line terminal 11 according to internal crystal oscillator, be synchronized with external GPS or big dipper clock, output pulse per second (PPS) or pair when
Message is to the protected host 4；
The sampling pulse of the protected host 4 be synchronized with the optical line terminal 11 pulse per second (PPS) or pair when message；
The pulse per second (PPS) that the optical network unit 12 passes through compensation of delay means or ieee standard and the optical line terminal 11
When realizing synchronous pair, and export pulse per second (PPS) or pair when message；
It is described protection slave 10 sampling pulse be synchronized with the optical network unit 12 pulse per second (PPS) or pair when message.
Optical line terminal foundation one local clock or the time counter being connected with protected host, by a sampling period
Produce a cycle sampling instant sequence, and will comprising sampling instant, sampling period, trip path time delay or downlink path when
The synchronized sampling information prolonged is handed down to and protects the optical network unit of slave, and slave sampling instant is all produced by main frame optical line terminal
Give birth to and issue, slave produces periodic samples pulse according to this synchronized sampling information；
A kind of multistage circuit Unit protection system and method provided from above technical scheme, the present invention.Institute
Stating multistage circuit includes：It is provided with the Bulk Supply Substation 1 of main bus-bar 2 and main circuit breaker 3, is provided with from bus 8 and from the several of breaker 9
From transformer station 7, and the Bulk Supply Substation 2 and the transmission line of electricity 5 between transformer station 7 are connected to, the system includes：
Protected host 4, protection slave 10, optical line terminal 11, optical network unit 12 and optical fiber 6；The protected host 4 and the light
Road terminal 11 is in the main transformation station 1；The protection slave 10 and the optical network unit 12 are located at described from transformation station 7
It is interior；The protected host 4 is connected by the optical line terminal 11 with optical fiber 6；The protection slave 10 passes through the optical-fiber network
Unit 12 is connected with optical fiber 6；The optical fiber 6 is made up of a fibre core.Methods described includes：The protected host 4 is according to main mother
Line 2 obtains Fisrt fault discriminating direction result；The protected host 4 receives the second fault direction and differentiates result, second event
Barrier discriminating direction result is that the protection slave 10 is obtained according to described from bus 8 is synchronous；The protected host 4 is according to described
Fisrt fault discriminating direction result and second fault direction differentiate that result judges whether the multistage circuit breaks down.This
Invention utilizes the time-delay characteristics and network scalability of the fast and stable of the point-to-point communication of Ethernet passive optical network, a light
Line terminal can be communicated by between passive optical splitters and multiple optical network units, and the present invention can flexible expansion multi-point circuit
Road Unit protection slave number, realizes the Unit protection of multiterminal transmission line of electricity；And it is quick in SMV, GOOSE message
On the basis of transmitting, moreover it is possible to transmit MMS messages, the distal end configuration and information for realizing device are called.
Those skilled in the art considering specification and after putting into practice invention disclosed herein, will readily occur to it is of the invention its
Its embodiment.The application is intended to any modification of the invention, purposes or adaptations, these modifications, purposes or
Person's adaptations follow general principle of the invention and including undocumented common knowledge in the art of the invention
Or conventional techniques.Description and embodiments are considered only as exemplary, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be appreciated that the invention is not limited in the precision architecture being described above and be shown in the drawings, and
And can without departing from the scope carry out various modifications and changes.The scope of the present invention is only limited by appended claim.
Claims (9)
1. a kind of multistage circuit Unit protection system, the multistage circuit includes：It is provided with the master of main bus-bar and main circuit breaker
Transformer station, it is provided with from bus and from the several from transformer station of breaker, and is connected to the Bulk Supply Substation with described from power transformation
Transmission line of electricity between standing, it is characterised in that the system includes：Protected host, protection slave, optical line terminal, optical-fiber network
Unit and optical fiber；
The protected host and the optical line terminal are in the main transformation station；
The protection slave and the optical network unit are located at described from transformation station；
The protected host is connected by the optical line terminal with the optical fiber；
The protection slave is connected by the optical network unit with the optical fiber；
The optical fiber is made up of a fibre core；
The protected host is used to obtain Fisrt fault discriminating direction result according to the main bus-bar；The second fault direction is received to sentence
Other result；Differentiate that result judges the multistage circuit according to the Fisrt fault discriminating direction result and second fault direction
Whether break down；If the multistage line failure, the protected host send the main circuit breaker and it is described from
The trip signal of breaker；
The protection slave according to described for synchronously obtaining the second fault direction differentiation result from bus.
2. multistage circuit Unit protection system according to claim 1, it is characterised in that the optical line terminal and
The optical network unit only transmits commercial data.
3. multistage circuit Unit protection system according to claim 1, it is characterised in that the optical line terminal and
The optical network unit is made up of special chip or field programmable gate array.
4. a kind of multistage circuit Unit protection method, for the multistage circuit Unit protection system described in claim 1
System, it is characterised in that the described method comprises the following steps：
Protected host obtains Fisrt fault discriminating direction result according to main bus-bar；
The protected host receives the second fault direction and differentiates result, and second fault direction differentiates that result is protection slave root
According to what is synchronously obtained from bus；
The protected host differentiates that result judges institute according to the Fisrt fault discriminating direction result and second fault direction
State whether multistage circuit breaks down；
If the multistage line failure, the protected host sends main circuit breaker and the trip signal from breaker.
5. method according to claim 4, it is characterised in that the protected host receives the second fault direction and differentiates knot
Really, specially：Pass through proprietary protocol exchange trouble discriminating direction result between the optical line terminal and the optical network unit
Information, or SMV, GOOSE message and MMS messages are exchanged by the agreements of IEC 61850.
6. method according to claim 5, it is characterised in that lead between the optical line terminal and the optical network unit
Cross the agreements of IEC 61850 and exchange SMV, GOOSE message and MMS messages, specially：The SMV, the GOOSE message and described
MMS messages bandwidth allocation is using fixed polling cycle and the method for Dynamic Bandwidth Allocation.
7. method according to claim 6, it is characterised in that the SMV, GOOSE message and MMS message bandwidth allocations are adopted
Method with polling cycle and Dynamic Bandwidth Allocation is fixed, specially：
Set a kind of new REPORT to upload and/or GATE issuing mechanisms, upstream bandwidth is divided into the SMV, the GOOSE report
Literary, the described class of MMS messages three, sets three priority, and the SMV highest priorities, the GOOSE message is taken second place, the MMS
Message is minimum.
8. method according to claim 4, it is characterised in that second fault direction differentiates that result is protection slave root
According to what is synchronously obtained from bus, specially：Mode realizes sample information synchronization during using compensation of delay means or ieee standard pair.
9. method according to claim 8, it is characterised in that the use compensation of delay means or ieee standard pair when side
Formula realizes sample information synchronization, specially：
The optical line terminal according to internal crystal oscillator, be synchronized with external GPS or big dipper clock, output pulse per second (PPS) or pair when message extremely
The protected host；
The sampling pulse of the protected host be synchronized with the optical line terminal pulse per second (PPS) or pair when message；
The optical network unit is realized synchronous by the pulse per second (PPS) of compensation of delay means or ieee standard and the optical line terminal
Pair when, and export pulse per second (PPS) or pair when message；
It is described protection slave sampling pulse be synchronized with the optical network unit pulse per second (PPS) or pair when message.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110166853A (en) * | 2018-02-13 | 2019-08-23 | 瞻博网络公司 | In the method and apparatus of the consistency check of the dense wavelength division multiplexing system of decomposition |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1595750A (en) * | 2004-07-07 | 2005-03-16 | 江苏省电力公司苏州供电公司 | 220 thousand volt high-voltage T-connection line three-side longitudinal protection device |
| CN204167882U (en) * | 2014-09-29 | 2015-02-18 | 国家电网公司 | Based on the current differential protection system of PON communication |
| CN104659765A (en) * | 2015-02-15 | 2015-05-27 | 国家电网公司 | Channel configuration and protection scheme applied to multi-terminal radiation network of power system |
| CN204832418U (en) * | 2015-08-19 | 2015-12-02 | 国网山东省电力公司检修公司 | Circuit generating line integration backup protection equipment based on trouble direction is indulged and is allied oneself with relatively |
| CN105655992A (en) * | 2016-01-26 | 2016-06-08 | 华北电力大学 | T line protection scheme fit for distributed electrical connection |
| CN106066451A (en) * | 2016-08-01 | 2016-11-02 | 西安工程大学 | A kind of T-type line based on longitudinal impedance protection computational methods |
-
2016
- 2016-11-17 CN CN201611019428.6A patent/CN106788690B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1595750A (en) * | 2004-07-07 | 2005-03-16 | 江苏省电力公司苏州供电公司 | 220 thousand volt high-voltage T-connection line three-side longitudinal protection device |
| CN204167882U (en) * | 2014-09-29 | 2015-02-18 | 国家电网公司 | Based on the current differential protection system of PON communication |
| CN104659765A (en) * | 2015-02-15 | 2015-05-27 | 国家电网公司 | Channel configuration and protection scheme applied to multi-terminal radiation network of power system |
| CN204832418U (en) * | 2015-08-19 | 2015-12-02 | 国网山东省电力公司检修公司 | Circuit generating line integration backup protection equipment based on trouble direction is indulged and is allied oneself with relatively |
| CN105655992A (en) * | 2016-01-26 | 2016-06-08 | 华北电力大学 | T line protection scheme fit for distributed electrical connection |
| CN106066451A (en) * | 2016-08-01 | 2016-11-02 | 西安工程大学 | A kind of T-type line based on longitudinal impedance protection computational methods |
Non-Patent Citations (1)
| Title |
|---|
| 刘桂言 等: "基于Opnet支持IEC 60870-5协议的配电网EPON通信仿真", 《电工电气》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110166853A (en) * | 2018-02-13 | 2019-08-23 | 瞻博网络公司 | In the method and apparatus of the consistency check of the dense wavelength division multiplexing system of decomposition |
| US11240573B2 (en) | 2018-02-13 | 2022-02-01 | Juniper Networks, Inc. | Methods and apparatus for consistency check for disaggregated dense wavelength-division multiplexing (DWDM) systems |
| CN110166853B (en) * | 2018-02-13 | 2022-06-03 | 瞻博网络公司 | Method and apparatus for consistency check in a decomposed DWDM system |
| US11617030B2 (en) | 2018-02-13 | 2023-03-28 | Juniper Networks, Inc. | Methods and apparatus for consistency check in disaggregated dense wavelength-division multiplexing (DWDM) systems |
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