CN106602525A - Differential protection system and method for power distribution network - Google Patents
Differential protection system and method for power distribution network Download PDFInfo
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- CN106602525A CN106602525A CN201611024117.9A CN201611024117A CN106602525A CN 106602525 A CN106602525 A CN 106602525A CN 201611024117 A CN201611024117 A CN 201611024117A CN 106602525 A CN106602525 A CN 106602525A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
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Abstract
The invention discloses a differential protection system and method for a power distribution network. The system comprises a differential protection host, an intelligent acquisition terminal, an optical line terminal and an optical network unit. The system and the method can achieve flexible expansion of differential protection to adapt to flexible wiring and running modes of a distribution network system and adapt to flexible access of distributed energy sources, thereby ensuring selectivity, rapidness, reliability and sensitivity of distribution network protection, and achieving rapid positioning and removal of faults; and meanwhile, an passive optical network is adopted, flexible access of multiple terminals can be achieved by using one trunk optical fiber core and a plurality of branch fiber cores, a lot of optical fiber resources can be saved, and on the basis that synchronization performance and rapid and reliable transmission of SMV and GOOSE messages are ensured, MMS messages can also be transmitted, thereby achieving far-end configuration and information calling of the intelligent acquisition terminal, and achieving differential protection of the power distribution network of a multi-power network.
Description
Technical field
The present invention relates to Relay Protection Technology in Power System field, more particularly to a kind of power distribution network differential protective system and side
Method.
Background technology
Conventional electrical distribution net does not consider that distributed energy is accessed, and fault current is existed only between power supply and trouble point, generally
Only the overcurrent protection with direction is configured in transformer station 10kV line outlets, the advantage of the program is that configuration is simple, has the disadvantage to select
Property it is poor, even if overcurrent protective device is installed for branched line, but due to distribution line electrical distance it is short, 10kV exits and branch
Circuit overcurrent protection definite value size cannot be distinguished by, and can only guarantee to select by allowing the overcurrent protection deferred action of 10kV exits
Property.On the other hand, when backbone breaks down, if do not install in backbone section switch protected, will cause completely to lose
Electricity；If section switch installs overcurrent protection, the selectivity of overcurrent protection still can only be guaranteed by time delay, be segmented more
When, protection act speed at substation exit will be caused very slow.
In order to meet the accuracy of the rapidity and fault location of failure removal, when the way of former main flow is that failure is sent out
When raw, failure is quickly cut off by substation exit chopper, then according to segment failure indicator positioning failure, i.e., before trouble point
Fault detector fault-signal is provided by fault current triggering, fault-signal is obtained by patrolman or networking then, it is final really
Determine trouble point.Trouble point relative can be accurately positioned using the program, but can also cause non-faulting section to have a power failure, power off time is from rather
Clock is to several tens minutes.
With the progressively popularization of distributed new, distribution network systems progressively develop into power network, failure by radial
The electric current of trouble point during generation, is not only flowed to from system side, also has the electric current from distributed power source effluent to trouble point, this makes
It is no longer desirable for the power distribution network of power network in obtaining existing technology according to fault detector come the method for the localization of faults.
The content of the invention
The goal of the invention of the present invention is to provide a kind of power distribution network differential protective system and method, to solve existing technology
The problem of the middle power distribution network for being no longer desirable for power network according to fault detector come the method for the localization of faults.
A kind of according to embodiments of the present invention first aspect, there is provided power distribution network differential protective system, main bus-bar, from bus with
And the main bus-bar and the distribution line between bus are connected to, the main bus-bar is provided with main circuit breaker, described from mother
Line is provided with from chopper, and the system includes：Differential protection main frame, several collecting terminals, optical line terminal and several
Optical network unit；
The differential protection main frame is connected with the main bus-bar；
Several collecting terminals are connected from bus with described；
The optical line terminal is connected with the differential protection main frame；
Several optical network units are connected with several collecting terminals respectively；
The optical line terminal is connected with a trunk optical fiber fibre core, the trunk optical fiber fibre core and several passive optical splitters
Connection, several optical network units are connected with several passive optical splitters respectively；
The differential protection main frame is for according to the main bus-bar the first electric parameters of collection；Receive described from the second of bus
Electric parameters；Difference current is calculated according to first electric parameters and second electric parameters；Sentenced according to the difference current
Whether the distribution line that breaks breaks down；If the distribution line breaks down, the differential protection main frame sends institute
State main circuit breaker and the trip signal from chopper；
The collecting terminal for according to it is described from bus synchronous acquisition described in the second electric parameters.
The optical line terminal and the optical network unit only transmit commercial data.
The optical line terminal and the optical network unit special chip or FPGA are realized, are independently transported as isolated system
OK.
A kind of second aspect according to embodiments of the present invention, there is provided power distribution network differential protecting method, it is poor for above-mentioned power distribution network
Dynamic protection system, methods described comprise the steps：
The differential protection main frame gathers the first electric parameters according to main bus-bar；
The differential protection main frame receives the second electric parameters, and second electric parameters are the collecting terminal according to institute
State from bus synchronous acquisition and obtain；
The differential protection main frame calculates difference current according to first electric parameters and second electric parameters；Root
Judge whether the distribution line breaks down according to the difference current；If the distribution line breaks down, the difference
Dynamic protected host sends the main circuit breaker and the trip signal from chopper.
The differential protection main frame receives the second electric parameters, specially：The optical line terminal and the optical network unit
Between electric quantity information is exchanged by proprietary protocol, or SMV, GOOSE message and MMS messages are exchanged by 61850 agreements of IEC.
SMV, GOOSE message are exchanged by 61850 agreements of IEC between the optical line terminal and the optical network unit
With MMS messages, specially：The SMV, the GOOSE message and the MMS messages bandwidth allocation using fixed polling cycle and
The method of Dynamic Bandwidth Allocation.
The SMV, GOOSE message and MMS messages bandwidth allocation are using fixed polling cycle and the side of Dynamic Bandwidth Allocation
Method, specially：
Arrange a kind of new REPORT to upload and/or GATE issuing mechanisms, upstream bandwidth is divided into the SMV, described
GOOSE message, three class of MMS messages, arrange three priority, and the SMV highest priorities, the GOOSE message are taken second place,
The MMS messages are minimum.
The collecting terminal according to described from bus synchronous acquisition, specially：Using compensation of delay means or IEEE
During standard pair, mode realizes sample information synchronization.
When the employing compensation of delay means or ieee standard pair, mode 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 to Times
Text is to the differential protection main frame；
The sampling pulse of the differential protection main frame be synchronized with the pulse per second (PPS) of the optical line terminal or pair when message；
The optical network unit passes through compensation of delay means or the pulse per second (PPS) of ieee standard and the optical line terminal is realized
When synchronous pair, and export pulse per second (PPS) or pair when message；
The sampling pulse of the collecting terminal be synchronized with the pulse per second (PPS) of the optical network unit or pair when message.
From above technical scheme, the power distribution network differential protective system and method for the present invention, the power distribution network include：It is main
Bus, from bus and the main bus-bar and the distribution line between bus are connected to, the main bus-bar is provided with main disconnected
Road device, it is described to be provided with from chopper from bus, main bus-bar, from bus and be connected to main bus-bar and between bus with netting twine
Road, main bus-bar are provided with main circuit breaker, are provided with from chopper from bus, and system includes：Differential protection main frame, several intelligent acquisition ends
End, optical line terminal and several optical network units；Differential protection main frame is connected with main bus-bar；Several collecting terminals with from
Bus connects；Optical line terminal is connected with differential protection main frame；Several optical network units are connected with several collecting terminals respectively
Connect；Optical line terminal is connected with a trunk optical fiber fibre core, and trunk optical fiber fibre core is connected with several passive optical splitters, several light nets
Network unit is connected with several passive optical splitters respectively；Differential protection main frame is for according to main bus-bar the first electric parameters of collection；Receive
From the second electric parameters of bus；Difference current is calculated according to the first electric parameters and the second electric parameters；Sentenced according to difference current
Whether disconnected distribution line breaks down；If distribution line breaks down, differential protection main frame sends main circuit breaker and from disconnected
The trip signal of road device；Collecting terminal is used for according to from the second electric parameters of bus synchronous acquisition；Achievable differential protection
Flexible expansion, adapts to the flexible and changeable wiring of distribution network systems and the method for operation, adapts to the flexible access of distributed energy, it is ensured that match somebody with somebody
The selectivity of net protection, rapidity, reliability and sensitivity, realize quick positioning and the excision of failure；Meanwhile, using passive light
Network, can realize the flexible access of multiple terminals, can save optical fiber in a large number with a trunk optical fiber fibre core and some branch's fibre cores
Resource, and on the basis of net synchronization capability and SMV, the transmission of GOOSE message fast and reliable is ensured, moreover it is possible to MMS messages are transmitted, it is real
The distal end configuration of existing collecting terminal and information are called, and realize the differential protection of the power distribution network to power network.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing that needs are used is briefly described, it should be apparent that, drawings in the following description are only some enforcements of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can be being obtained according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the schematic diagram according to an a kind of power distribution network differential protective system for being preferable to carry out exemplifying；
Fig. 2 is the flow chart according to an a kind of power distribution network differential protecting method for being preferable to carry out exemplifying；
Fig. 3 is improved fixed polling cycle dynamic bandwidth allocation algorithm principle schematic.
Illustrate：
Wherein, 1- differential protections main frame, 2- collecting terminals, 3- trunk optical fiber fibre cores, 10- main bus-bars, the main open circuits of 11-
Device, from bus, 21- is from chopper, 201- optical line terminals, 202- optical network units, 30- distribution lines for 20-.
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 the embodiment of whole.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.
Fig. 1 is referred to, according to the first aspect of present example, there is provided a kind of power distribution network differential protective system, it is described to match somebody with somebody
Electrical network includes：Main bus-bar 10, from bus 20 and it is connected to the main bus-bar 10 and the distribution line between bus 20
30, the main bus-bar 10 is provided with main circuit breaker 11, and described to be provided with from chopper 21 from bus 20, the system includes：Differential guarantor
Shield main frame 1, several collecting terminals 2, optical line terminal (English：Optical Line Terminal, abbreviation：OLT)201
And several optical network unit (English：Optical Network Unit, abbreviation：ONU)202；
The differential protection main frame 1 is connected with the main bus-bar 10；
Several collecting terminals 2 are connected from bus 20 with described；
The optical line terminal 201 is connected with the differential protection main frame 1；
Several optical network units 202 are connected with several collecting terminals 2 respectively；
The optical line terminal 201 is connected with a trunk optical fiber fibre core 3, and the trunk optical fiber fibre core 3 is passive with several
Beam splitter connects, and several optical network units 202 are connected with several passive optical splitters respectively；
The differential protection main frame 1 is for according to the first electric parameters of collection of the main bus-bar 10；Receive described from bus 20
The second electric parameters；Difference current is calculated according to first electric parameters and second electric parameters；According to described differential
Electric current judges whether the distribution line 30 breaks down；If the distribution line 30 breaks down, the differential protection
Main frame 1 sends the main circuit breaker 11 and the trip signal from chopper 21；
The collecting terminal 2 for according to it is described from 20 synchronous acquisition of bus described in the second electric parameters.
The optical line terminal 201 and the optical network unit 202 only transmit commercial data.
The optical line terminal 201 and the optical network unit 202 use special chip or FPGA to realize, used as isolated system
Independent operating.
Fig. 2 is referred to, according to the second aspect of present example, there is provided a kind of power distribution network differential protecting method, for
Power distribution network differential protective system is stated, methods described comprises the steps：
Step S1, the differential protection main frame gather the first electric parameters according to main bus-bar；
Step S2, the differential protection main frame receive the second electric parameters from bus, and second electric parameters are the intelligence
Energy acquisition terminal is obtained from bus synchronous acquisition according to described；
Step S3, the differential protection main frame calculate differential according to first electric parameters and second electric parameters
Electric current；
Step S4, judge whether the distribution line breaks down according to the difference current；
If step S5, the distribution line break down, the optical line terminal sends the main circuit breaker and institute
State the trip signal from chopper.
The differential protection main frame 1 receives the second electric parameters, specially：The optical line terminal 201 and the optical-fiber network
Between unit 202 by proprietary protocol exchange electric quantity information, or by 61850 agreements of IEC exchange SMV, GOOSE message and
MMS messages.
Between the optical line terminal 201 and the optical network unit 202 by 61850 agreements of IEC exchange SMV,
GOOSE message and MMS messages, specially：The SMV, the GOOSE message and the MMS messages bandwidth allocation are using fixation
The method of polling cycle and Dynamic Bandwidth Allocation.
The SMV, GOOSE message and MMS messages bandwidth allocation are using fixed polling cycle and the side of Dynamic Bandwidth Allocation
Method, specially：
Arrange a kind of new REPORT to upload and/or GATE issuing mechanisms, upstream bandwidth is divided into the SMV, described
GOOSE message, three class of MMS messages, arrange three priority, and the SMV highest priorities, the GOOSE message are taken second place,
The MMS messages are minimum.
The collecting terminal 2 according to described from 20 synchronous acquisition of bus, specially：Using compensation of delay means or
During ieee standard pair, mode realizes sample information synchronization.
When the employing compensation of delay means or ieee standard pair, mode realizes sample information synchronization, specially：
The optical line terminal 201 according to internal crystal oscillator, be synchronized with external GPS or big dipper clock, export pulse per second (PPS) or right
When message to the differential protection main frame 1；
The sampling pulse of the differential protection main frame 1 be synchronized with the pulse per second (PPS) of the optical line terminal 201 or pair when message；
The optical network unit 202 passes through the second arteries and veins of compensation of delay means or ieee standard and the optical line terminal 201
Punching is when realizing synchronous pair, and export pulse per second (PPS) or pair when message；
The sampling pulse of the collecting terminal 2 be synchronized with the pulse per second (PPS) of the optical network unit 202 or pair when message.
Key point in real time of the invention is to realize both sides sample-synchronous, high-speed data communication with EPON.Realize each side synchronization
The specific embodiment of sampling is as follows：The optical line terminal 201 being connected with differential protection main frame 1 according to a local clock or when
Between enumerator, produce a cycle sampling instant sequence by sampling period, and will comprising sampling instant, the sampling period,
The synchronized sampling information of trip path time delay or downlink path time delay is handed down to the optical network unit 202 with collecting terminal 2,
2 sampling instant of collecting terminal is all produced and is issued by the optical line terminal 201 of differential protection main frame 1, collecting terminal 2
Periodic samples pulse is produced according to this synchronized sampling information；Realize that the specific embodiment of high-speed data communication is as follows：Pass through
The method combined using fixed polling cycle and Dynamic Bandwidth Allocation, solves SMV, GOOSE and MMS in IEC61850 agreements
Message is for communication rapidity, the coordination problem of reliability；Guarantee that 4000 points per second of SMV is transmitted at equal intervals, GOOSE message switch
Whether amount is conjugated with dynamic interval transmitting, while guaranteeing the efficiency of transmission of MMS messages.
As shown in figure 3, in each polling cycle, OLT issues GATE twice to each ONU and authorizes, and issues for the first time
GATE authorize include highest priority traffic (SMV) bandwidth authorizing, such as G1, G2, G'1, G'2, the GATE for issuing for the second time is awarded
Power includes the bandwidth authorizing of middle priority service (GOOSE message) and low priority traffice (MMS messages), such as Gs1, Gs2, Gs'
1、Gs'2.ONU1 uploads SMV in G1 authorized windows first, and a REPORT message, ONU are and then uploaded after SMV
During bandwidth application, separately apply by three priority levels, when OLT receives the REPORT of ONU1 uploads, first to SMV bandwidth applications
It is allocated immediately, and issues a mandate G'1 to ONU1；In the same manner, ONU2 does same process in G2 authorized windows；In OLT
After receiving the REPORT that all ONU are uploaded, count in all ONU, low priority bandwidth application, plan as a whole distribution bandwidth, and will
In, the bandwidth of low priority traffice distribution authorized by Gs'1, Gs'2 and issues and report to corresponding ONU.
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 be can be seen that from above-mentioned principles illustrated, and be not take up band
There is no any idle bandwidth to waste in wide resource, whole Dynamic Bandwidth Allocation cycle.This algorithm adopts three sub-distribution of bandwidth
Issuing mechanism twice：OLT is sequentially completed the bandwidth allocation to three types business by tri- kinds of priority of SMV, GOOSE, MMS；It is high
Priority SMV service bandwidth is individually issued with a GATE entitlement message；In, low priority GOOSE, MMS service bandwidth, in order to
Avoiding frequently issuing GATE messages causes to take excessive downlink bandwidth resource, and GOOSE, MMS service bandwidth is merged into one
GATE is issued in authorizing.
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 OLT receives the REPORT messages of ONU uploads, the highest to applying in REPORT is preferential immediately
Level business (SMV) bandwidth application is authorized, and issues a mandate GATE to ONU, and updates the Tup in polling cycle
Value；At the end of Tup windows, OLT starts to count GOOSE, MMS bandwidth application that all ONU are uploaded, first successively to all
Middle priority service (GOOSE) the bandwidth application of ONU applications carries out bandwidth allocation, then again successively to the application of all ONU
Low priority traffice (MMS) bandwidth application carries out bandwidth allocation, and GOOSE, MMS bandwidth authorizing is merged into a mandate finally
In GATE and it is handed down to corresponding ONU.
From above technical scheme, the power distribution network differential protective system and method for the present invention, the power distribution network include：It is main
Bus, from bus and the main bus-bar and the distribution line between bus are connected to, the main bus-bar is provided with main disconnected
Road device, it is described to be provided with from chopper from bus, main bus-bar, from bus and be connected to main bus-bar and between bus with netting twine
Road, main bus-bar are provided with main circuit breaker, are provided with from chopper from bus, and system includes：Differential protection main frame, several intelligent acquisition ends
End, optical line terminal and several optical network units；Differential protection main frame is connected with main bus-bar；Several collecting terminals with from
Bus connects；Optical line terminal is connected with differential protection main frame；Several optical network units are connected with several collecting terminals respectively
Connect；Optical line terminal is connected with a trunk optical fiber fibre core, and trunk optical fiber fibre core is connected with several passive optical splitters, several light nets
Network unit is connected with several passive optical splitters respectively；Differential protection main frame is for according to main bus-bar the first electric parameters of collection；Receive
From the second electric parameters of bus；Difference current is calculated according to the first electric parameters and the second electric parameters；Sentenced according to difference current
Whether disconnected distribution line breaks down；If distribution line breaks down, differential protection main frame sends main circuit breaker and from disconnected
The trip signal of road device；Collecting terminal is used for according to from the second electric parameters of bus synchronous acquisition；Achievable differential protection
Flexible expansion, adapts to the flexible and changeable wiring of distribution network systems and the method for operation, adapts to the flexible access of distributed energy, it is ensured that match somebody with somebody
The selectivity of net protection, rapidity, reliability and sensitivity, realize quick positioning and the excision of failure；Meanwhile, using passive light
Network, can realize the flexible access of multiple terminals, can save optical fiber in a large number with a trunk optical fiber fibre core and some branch's fibre cores
Resource, and on the basis of net synchronization capability and SMV, the transmission of GOOSE message fast and reliable is ensured, moreover it is possible to MMS messages are transmitted, it is real
The distal end configuration of existing collecting terminal and information are called, and realize the differential protection of the power distribution network to power network.
Those skilled in the art will readily occur to its of the present invention after considering description and putting into practice invention disclosed herein
Its embodiment.The application is intended to any modification of the present invention, purposes or adaptations, these modifications, purposes or
Person's adaptations follow the general principle of the present invention and including the undocumented common knowledge in the art of the present 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 precision architecture for being described above and being shown in the drawings is the invention is not limited in, and
And various modifications and changes can be being carried out without departing from the scope.The scope of the present invention is limited only by appended claim.
Claims (9)
1. a kind of power distribution network differential protective system, the power distribution network include：Main bus-bar, from bus and it is connected to the main bus-bar
And the distribution line between bus, the main bus-bar is provided with main circuit breaker, described to be provided with from chopper from bus, and which is special
Levy and be, the system includes：Differential protection main frame, several collecting terminals, optical line terminal and several optical-fiber network lists
Unit；
The differential protection main frame is connected with the main bus-bar；
Several collecting terminals are connected from bus with described；
The optical line terminal is connected with the differential protection main frame；
Several optical network units are connected with several collecting terminals respectively；
The optical line terminal is connected with a trunk optical fiber fibre core, and the trunk optical fiber fibre core is connected with several passive optical splitters
Connect, several optical network units are connected with several passive optical splitters respectively；
The differential protection main frame is for according to the main bus-bar the first electric parameters of collection；Receive described electric from the second of bus
Amount；Difference current is calculated according to first electric parameters and second electric parameters；Institute is judged according to the difference current
State whether distribution line breaks down；If the distribution line breaks down, the differential protection main frame sends the master
Chopper and the trip signal from chopper；
The collecting terminal for according to it is described from bus synchronous acquisition described in the second electric parameters.
2. system according to claim 1, it is characterised in that the optical line terminal and the optical network unit are only transmitted
Commercial data.
3. system according to claim 2, it is characterised in that the optical line terminal and the optical network unit are with special
Chip or FPGA are realized, used as isolated system independent operating.
4. a kind of power distribution network differential protecting method, for the power distribution network differential protective system described in claim 1, methods described bag
Include following steps：
The differential protection main frame gathers the first electric parameters according to main bus-bar；
The differential protection main frame receives the second electric parameters, second electric parameters be the collecting terminal according to it is described from
Bus synchronous acquisition is obtained；
The differential protection main frame calculates difference current according to first electric parameters and second electric parameters；According to institute
State difference current and judge whether the distribution line breaks down；If the distribution line breaks down, the differential guarantor
Shield main frame sends the main circuit breaker and the trip signal from chopper.
5. method according to claim 4, it is characterised in that the differential protection main frame receives the second electric parameters, specially：
Electric quantity information is exchanged by proprietary protocol between the optical line terminal and the optical network unit, or passes through IEC 61850
Agreement exchanges SMV, GOOSE message and MMS messages.
6. method according to claim 5, it is characterised in that pass through between the optical line terminal and the optical network unit
61850 agreements of IEC exchange SMV, GOOSE message and MMS messages, specially：The SMV, the GOOSE message and the MMS
Message 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 messages bandwidth allocation are adopted
The method of fixed polling cycle and Dynamic Bandwidth Allocation, specially：
Arrange a kind of new REPORT to upload and/or GATE issuing mechanisms, upstream bandwidth is divided into the SMV, GOOSE report
Literary, described three class of MMS messages, arranges three priority, and the SMV highest priorities, the GOOSE message are taken second place, the MMS
Message is minimum.
8. method according to claim 4, it is characterised in that the collecting terminal is synchronously adopted from bus according to described
Collection, specially：Sample information synchronization is realized using mode when compensation of delay means or ieee standard pair.
9. method according to claim 8, it is characterised in that mode when the employing compensation of delay means or ieee standard pair
Sample information synchronization is realized, 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 differential protection main frame；
The sampling pulse of the differential protection main frame be synchronized with the pulse per second (PPS) of the optical line terminal or pair when message；
The optical network unit passes through compensation of delay means or the pulse per second (PPS) of ieee standard and the optical line terminal is realized synchronously
Pair when, and export pulse per second (PPS) or pair when message；
The sampling pulse of the collecting terminal be synchronized with the pulse per second (PPS) of the optical network unit or pair when message.
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| CN115134431A (en) * | 2022-05-27 | 2022-09-30 | 江苏金智科技股份有限公司 | UDP differential message extraction method and system for power distribution automation 5G differential protection |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101350520A (en) * | 2008-09-17 | 2009-01-21 | 中国南方电网有限责任公司 | Protection control system and method base on electric network synthesis information |
| CN101677183A (en) * | 2008-09-16 | 2010-03-24 | 河南省电力公司许昌供电公司 | Self-adaptive master-slave positioning method for three-terminal differential protection |
| CN101938117A (en) * | 2010-10-14 | 2011-01-05 | 山东大学 | Current differential protection method for smart distribution network |
| CN204559113U (en) * | 2015-04-30 | 2015-08-12 | 国家电网公司 | Power distribution network multistage loop grid vertical connection phase segregated differential protection device |
| CN105896489A (en) * | 2016-05-11 | 2016-08-24 | 许继集团有限公司 | Differential protection method and system for multi-end T connected transmission line |
| CN106099879A (en) * | 2016-08-09 | 2016-11-09 | 深圳供电局有限公司 | Differential protection system and differential protection implementation method for flexible direct current distribution network line |
-
2016
- 2016-11-17 CN CN201611024117.9A patent/CN106602525B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101677183A (en) * | 2008-09-16 | 2010-03-24 | 河南省电力公司许昌供电公司 | Self-adaptive master-slave positioning method for three-terminal differential protection |
| CN101350520A (en) * | 2008-09-17 | 2009-01-21 | 中国南方电网有限责任公司 | Protection control system and method base on electric network synthesis information |
| CN101938117A (en) * | 2010-10-14 | 2011-01-05 | 山东大学 | Current differential protection method for smart distribution network |
| CN204559113U (en) * | 2015-04-30 | 2015-08-12 | 国家电网公司 | Power distribution network multistage loop grid vertical connection phase segregated differential protection device |
| CN105896489A (en) * | 2016-05-11 | 2016-08-24 | 许继集团有限公司 | Differential protection method and system for multi-end T connected transmission line |
| CN106099879A (en) * | 2016-08-09 | 2016-11-09 | 深圳供电局有限公司 | Differential protection system and differential protection implementation method for flexible direct current distribution network line |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115134431A (en) * | 2022-05-27 | 2022-09-30 | 江苏金智科技股份有限公司 | UDP differential message extraction method and system for power distribution automation 5G differential protection |
| CN115134431B (en) * | 2022-05-27 | 2023-10-20 | 江苏金智科技股份有限公司 | UDP differential message extraction method and system for power distribution automation 5G differential protection |
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