CN104037945A - Distribution network automation system - Google Patents
Distribution network automation system Download PDFInfo
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- CN104037945A CN104037945A CN201410291384.7A CN201410291384A CN104037945A CN 104037945 A CN104037945 A CN 104037945A CN 201410291384 A CN201410291384 A CN 201410291384A CN 104037945 A CN104037945 A CN 104037945A
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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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
Abstract
A distribution network automation system comprises a power distribution main station, power distribution substations and power distribution terminals. The power distribution main station is responsible for monitoring and managing global information and used for monitoring and acquiring data of a whole distribution network to complete fault handling within the whole network; the power distribution substations are used for managing distribution station terminal monitoring equipment such as switchgear cubicles for loop networks, switching stations for distribution networks and the like, acquiring, gathering and uploading signals of the power distribution terminals to the power distribution main station, and transmitting orders of the power distribution main station to the power distribution terminals; the power distribution terminals mainly used for acquiring data of primary equipment, controlling switchgears, detecting and recognizing faults and sending fault information to the power distribution substations and the power distribution main station. The distribution network automation system has the advantages that power supply reliability can be greatly improved, fault time can be greatly shortened, voltage quality can be greatly improved to provide optimal voltage for users, and labor intensity can be relieved for operators; management level of the whole power distribution system can be improved, working efficiency is improved, and user service level is improved.
Description
Technical field
The present invention relates to a kind of Distribution Management System, specifically a kind of distribution automation system.
Background technology
Along with the high speed development of national economy and going deep into of reform and opening-up, power consumer is more and more higher to the requirement of the quality of power supply and power supply reliability, and voltage fluctuation and power failure in short-term all can cause huge loss.Therefore, need in power distribution network, realize in conjunction with electric network reconstruction power distribution automation, to improve the managerial skills of power distribution network, provide high-quality electric energy for vast power consumer is continual.
Power distribution automation is the concept of the western developed country proposition seventies, has obtained abundant development at present Japan, America and Europe.Domestic also had a lot of trials, but mainly concentrate on city.For power distribution automation; in " distribution system automation design directive/guide ", provide very definite definition for its feature: " utilize hyundai electronics, computer, communication and network technology; power distribution network online data and off-line data, power distribution network data and user data, electric network composition and geographical graphic are carried out to information integrated; the automated system of complete, realize monitoring under the normal operation of power distribution network and equipment thereof and accident condition, protection, control, modernization with electric charge distribution management ".The work management of the power distribution automation monitoring under normal and accident conditions, protection, control, metering and power supply department by power distribution network organically merges; improve power supply quality; set up more closely more responsible relation with user; meet with reasonable prices the diversity that user requires, make every effort to power supply economics best.At present, most of distribution automation systems also can play and monitor that power distribution network operation conditions and remote control change the effect of operational mode in the time that power distribution network normally moves, when fault, can discover in time, still, present distribution automation system lacks automatic control function mostly.Even if minority distribution automation system has automatic control function, also because system is too complicated, redundancy, make with high costsly, be not suitable for applying.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of distribution automation system, promote power supply reliability, promote distribution planning level, reduce grid line loss, improve distribution scheduling managerial skills, improve repairing operating efficiency.
The present invention solves the technical scheme that its technical problem takes: distribution automation system, comprise distribution main website, distribution substation and distribution terminal, it is characterized in that, described distribution main website is connected with distribution substation by fiber optic Ethernet, and described distribution substation is connected with distribution terminal by dicyclo self-healing optical fiber ring network;
Responsible supervision and the management to global information of described distribution main website, in order to whole power distribution network is carried out to data acquisition and monitoring, complete the troubleshooting in network-wide basis, equipment control and GIS-Geographic Information System are provided simultaneously, and improve distribution advanced applied software, to realize the optimization operation to whole distribution system;
Described distribution substation is connecting distribution terminal and distribution main website, in order to manage power distribution station end watch-dog, the signal of distribution terminal is gathered, gathers, is uploaded to distribution main website, the instruction of distribution main website is forwarded to distribution terminal simultaneously;
Described distribution terminal mainly, in order to complete data acquisition, the control of switching devices and the detection of fault and the identification to primary equipment, has the functions such as remote measurement, remote signalling, remote control, data remote, and fault message is sent to distribution substation and distribution main website.
As a preferred embodiment of the present invention, described distribution main website comprises primary data server, preliminary data server, GIS work station, traffic control station, electric energy metered system, form work station, maintenance work station, the first prepositive communication computer, second communication front end processor and clock system, described primary data server, preliminary data server, GIS work station, traffic control station, electric energy metered system, form work station, maintenance work station, the first prepositive communication computer, second communication front end processor and clock system respectively access data bus interconnect between two, described the first prepositive communication computer and second communication front end processor respectively incoming fiber optic Ethernet are connected with distribution substation.
As a preferred embodiment of the present invention, described fiber optic Ethernet comprises SDH fiber optic Ethernet.
As a preferred embodiment of the present invention, described optical fiber ring network is for adopting dicyclo self-healing optical fiber ring network.
As a preferred embodiment of the present invention, described power distribution station end comprises loop-network switch cabinet and/or distribution switching station.
As a preferred embodiment of the present invention, described distribution terminal comprises FTU, DTU and TTU, and described FTU connects outdoor pole top switch, and described DTU connects loop-network switch cabinet, and described TTU connects distribution transformer.
As a preferred embodiment of the present invention, described primary equipment comprises one or more in outdoor pole top switch, loop-network switch cabinet, distribution transformer and distribution switching station.
As a preferred embodiment of the present invention, described distribution main website comprises electrical power distribution automatization system, distribution GIS-Geographic Information System and Distribution Management System, described electrical power distribution automatization system comprises distribution SCADA subsystem, substation automation subsystem and feeder automation subsystem, processes in real time in order to realize data acquisition, operating condition monitoring and controlling, fault; Described distribution GIS-Geographic Information System comprises the equipment management subsystem and user profile subsystem, in order to distribution SCADA system interconnect, real time data is shown on geography information figure; Described Distribution Management System comprises distribution Work management system, management of power use automated system, distribution advanced applied software, in order to realize the senior application of distribution management, outage management, engineering management, electric energy measuring management and distribution.
The invention has the beneficial effects as follows:
(1) electrical power distribution automatization system can greatly improve power supply reliability, shortens fault time, improve quality of voltage, offers user with optimal voltage, and can alleviate operations staff's labour intensity.
(2) can make operations staff grasp frequently the state (as the formation of system, the folding condition of switch, load current, the situation that accident occurs etc.) of distribution system.
(3) can make distribution system in the time having a power failure, comprise that accident interruption and construction have a power failure, can show the situation of power failure, calculate the method for recovering power transmission after having a power failure, and automatically carry out the operation of switch, thereby the operation and maintenance of distribution system is rationalized, and can process rapidly all reactions of user and system.
(4) can defend the managerial skills of high whole distribution system, increase work efficiency, improve user's service level.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Embodiment
For clearly demonstrating the technical characterstic of this programme, below by embodiment, and in conjunction with its accompanying drawing, the present invention will be described in detail.Disclosing below provides many different embodiment or example to be used for realizing different structure of the present invention.Of the present invention open in order to simplify, hereinafter the parts to specific examples and setting are described.In addition, the present invention can be in different examples repeat reference numerals and/or letter.This repetition is in order to simplify and object clearly, itself do not indicate the relation between discussed various embodiment and/or setting.It should be noted that illustrated parts are not necessarily drawn in proportion in the accompanying drawings.The present invention has omitted the description of known assemblies and treatment technology and technique to avoid unnecessarily limiting the present invention.
As shown in Figure 1, a kind of distribution automation system of the present invention, it comprises distribution main website, distribution substation and distribution terminal, and described distribution main website is connected with distribution substation by SDH fiber optic Ethernet, and described distribution substation is connected with distribution terminal by dicyclo self-healing optical fiber ring network.
The hardware of described distribution main website comprises primary data server, preliminary data server, GIS work station, traffic control station, electric energy metered system, form work station, maintenance work station, the first prepositive communication computer, second communication front end processor and clock system, described primary data server, preliminary data server, GIS work station, traffic control station, electric energy metered system, form work station, maintenance work station, the first prepositive communication computer, second communication front end processor and clock system respectively access data bus interconnect between two, described the first prepositive communication computer accesses respectively SDH fiber optic Ethernet with second communication front end processor and is connected with distribution substation.Described distribution Master Station Software system comprises electrical power distribution automatization system, distribution GIS-Geographic Information System and Distribution Management System, described electrical power distribution automatization system comprises distribution SCADA subsystem, substation automation subsystem and feeder automation subsystem, processes in real time in order to realize data acquisition, operating condition monitoring and controlling, fault; Described distribution GIS-Geographic Information System comprises the equipment management subsystem and user profile subsystem, in order to distribution SCADA system interconnect, real time data is shown on geography information figure; Described Distribution Management System comprises distribution Work management system, management of power use automated system, distribution advanced applied software, in order to realize the senior application of distribution management, outage management, engineering management, electric energy measuring management and distribution.Responsible supervision and the management to global information of described distribution main website, in order to whole power distribution network is carried out to data acquisition and monitoring, complete the troubleshooting in network-wide basis, equipment control and GIS-Geographic Information System are provided simultaneously, and improve distribution advanced applied software, to realize the optimization operation to whole distribution system.
Described distribution substation is connecting distribution terminal and distribution main website, in order to manage the power distribution station end watch-dog such as loop-network switch cabinet, distribution switching station, signal to distribution terminal gathers, gathers, is uploaded to distribution main website, the instruction of distribution main website is forwarded to distribution terminal simultaneously.
Described distribution terminal comprises FTU, DTU and TTU, and described FTU connects outdoor pole top switch, and described DTU connects loop-network switch cabinet, and described TTU connects distribution transformer.Described distribution terminal is mainly in order to complete data acquisition, the control of switching devices and the detection of fault and the identification to primary equipments such as outdoor pole top switch, loop-network switch cabinet, distribution transformer and distribution switching stations, there is the functions such as remote measurement, remote signalling, remote control, data remote, and fault message is sent to distribution substation and distribution main website.
Distribution automation system of the present invention adopts configuration distribution main website, distribution substation and distribution terminal three layer models, it is complete electrical power distribution automatization system pattern, promote power supply reliability, promote distribution planning level, reduce grid line loss, improve distribution scheduling managerial skills, improved repairing operating efficiency.
Distribution main website is the control and management center of distribution automation system, mainly complete that real time data to whole distribution network systems, facility information, information about power, user profile etc. gather, man-machine interaction, analysis management, with the function such as information sharing and FA of other system.Distribution main website also can be used as Regional Control Center, as node and the networking of higher level main website of higher level main website, carries out information exchange and shares with higher level main website.
Distribution main station system function is as follows:
One, auxiliary tone SCADA
(1) functional overview
SCADA is the basis of power distribution automation main station system, and its major function is data acquisition and remote control and management.
(2) data acquisition and processing
1, data acquisition
This module is responsible for gathering the information such as remote measurement that each distribution terminal of sending here from distribution substation and RTU gather, remote signalling, pulsed quantity, digital quantity, the clock information that the channel monitoring information that channel monitoring device is sent here and gps clock are sent here.
Analog quantity: active power, reactive power, power factor, electric current, voltage, temperature of oil in transformer, frequency, pressure etc.
Digital quantity: frequency, Pulse Electric tolerance, water level etc.
Quantity of state: on-load switch, circuit breaker, disconnecting link position signalling, load tap changer position signalling, protection and automatics actuating signal, channel failure information, sequence of events recording (SOE).
Pulsed quantity: the pulse value of on-the-spot pulse electricity meter.
Time quantum: the time pulse of gps clock or to time instruction.
2, data processing
(1) analog quantity processing
1. engineering value is calculated: use side-play amount, coefficient to calculate original value, will give birth to data and transform ripe data.
2. allow mark setting: allow user to set following functions switch.
Whether scanning allows: allow this analog quantity to scan.
Report to the police and allow: whether allow this analog quantity to produce and report to the police.
Remote regulating allows: whether can carry out remote regulating operation to this analog quantity.
Emergency review: whether this analog quantity is carried out to emergency review.
Absolute value: whether this analog quantity engineering value is taken absolute value.
Audio alert: whether this analog quantity is used to audio alert.
3. historical storage
Can carry out following several effective calculating and storage to various analog quantitys.
The meritorious statistical value such as daily load rate, monthly load factor
Normal time day, day be upper limit time, more lower limit time day more
The normal time moon, the moon be upper limit time, the more lower limit time moon more
Engineering maximum on duty for the day, the day such as day minimum, per day statistical value
Month statistical values such as engineering value moon maximum, month minimum, monthly average
Voltage day qualification rate, day more upper limit rate, day lower limit rate more
The voltage moon qualification rate, the moon more upper limit rate, the moon lower limit rate more
4. report to the police and arrange
The grade of definition warning message, is divided into general, serious and urgent three kinds of grades.When system operation, can screen warning message according to the grade of warning message.
Alarm limit, dead band are set and set, in the time that the engineering value of analog quantity is fallen outside alarm limit, produce remote measurement off-limit alarm, produce a large amount of warning when avoiding analog quantity to fluctuate near alarm limit, also allow user to set alarm dead band.
5. effective value is set
In the time that the engineering value of analog quantity is fallen outside valid value range, think that analog quantity is in halted state.
(2) quantity of state processing
1. according to the on-load switch, electric substation's switch, the disconnecting link state that gather, load tap changer position, shows distribution running status in real time.
2. send rapidly warning when state variation, information after treatment is sent database, man-machine interface, print system, imitation screen etc.
3. state setting, comprising:
Remote control is blocked and is allowed.
SOE arranges.
Maintenance mark arranges, and ground connection symbol, maintenance symbol, security fence can be set.
Shielding remote signalling alarm action too frequently.
(3) electric flux processing
1. the electric degree truth of a matter is manually set, carries out the scale conversion of electricity.
2. the electric weight in computing cycle, and preserve in real time the pulse value in upper cycle.
3. set high and low, Pinggu load period, and calculate the super use value of owing of day part electric weight, result of calculation enters in real time and history library.The point of acrotism momentum, can take integral way or point electric degree account form to calculate electric weight, and the time of integration is adjustable.
3, statistical computation
(1) user can quote by high-level language grammer the special calculation functions such as constant, variable, function definition integration constant, dibit remote signalling, and computing formula definition is convenient, multiple functional.
(2) can always complete add, add up, the calculating such as mean value, qualification rate, line loss, load factor, operation ratio, power factor, integration.
(3) can complete the statistics of switch, protection action frequency, passage switching statistics, passage Bit Error Code Statistics, number of times and the relevant quantitative statistics of operating a switch of rationing the power supply of the each electric pressure of statistics of maximum, minimum value and the time of occurrence of various data.
(4) can realize the statistics of reliability index, as voltage, frequency qualification rate, power supply reliability etc.
(3) operation is controlled
1, realize on-load switch, circuit breaker, disconnecting link etc. are carried out to long-range breaking-closing operating.
2, regulate on-load transformer tap changer.
3, the distant place switching of capacitor, reactor.
4, control and have reliable check, return to school and the anti-misoperation measure such as item examination & verification.
5, can realize the functions such as the amendment of distribution terminal remote parameter, program download.
6, can realize the sequential control being made up of multiple control commands, system is controlled multiple equipment according to the good serial control command of predefined, comprises security inspection and the delay etc. of control.
(4) alarming and managing
1, various warnings can define flexibly, and warning message is by data base administration, and can retrieve and process.
2, provide the various forms such as figure, word, voice, printing to report to the police, electronics function on duty can be by system operation troubles and power grid accident by dialing or pager notification operation personnel, and operations staff also can carry out Help by Phone to alarm content.
3, can say that row remote measurement off-limit alarm, quantity of state change the setting of warning, accident alarming and condition alarm.
4, when accident, the alarm of release accident automatically picture, accident alarm picture can be set voluntarily by user.
(5) man-machine interface
(MND close friend, rich color use simple man-machine interface.On the line chart of power distribution network geographical wiring diagram (or line chart) and relevant area power grid, show the running status of power distribution network and relevant area power grid.
1, show operation, stop the equipment states such as labour, recovery and maintenance.
2, the warning of out-of-limit, the unit exception situation of power distribution network and relevant regional operation of power networks parameter.
(6) Report Server Management
1, the practicable start by set date of report printing, manually start and three kinds of Starting mode of event-driven.
2, timed print comprises integral point record, daily sheet, month form, year form etc., and printing interval can be set.
3, out-of-limit, the straighforward operation of the exportable telemechanical state of event-driven, remote measurement, the record of relieving, system equipment fault, remote signalling displacement, logout, emergency review etc.
4, print What can manually define, as distribution reliability data statistical report form is printed.
5, system to time, system receives gps satellite clock, clocking error is less than 1ms, also can receive higher level's dispatching down distributing to time order, meanwhile, DA main website downwards grating electronic station, distribution terminal etc. issue to time order, the unification of guarantee the whole network clock accuracy.
(7) user management
1, all Systems Operators (system manager, system maintenance person, dispatcher etc.) need to be endowed different range of managements and operating right according to it, according to behaviors such as the control of authority operating personnel's of login reading and writing, maintenance, execution.
2, password control is carried out in important remote control, carries out password verification in the time carrying out straighforward operation, to guarantee that unrelated person can not carry out straighforward operation.
3, all logins (exiting) and change password, authority, important operation can record for future reference on time.
Under the abnormal conditions such as 4, unauthorized operation, misoperation, network failure, printer fault, system provides correct prompting.
(8) communication management
1, the operating condition of each node on energy monitoring network, produces and reports to the police when fault, and function is re-started to distribution.
2, monitor the ruuning situation of distribution substation and distribution terminal, equipment state changes the processing of reporting to the police.
3, monitor passage true form and the statistics error rate, can show and type channel transmitting-receiving true form, remote control signaling can file by 24 hour records, and the Bit Error Ratio Measurement time interval can be selected to arrange.
4, the various faults of in-circuit diagnostic system, can realize by designated lane or dialing the functions such as telemonitoring, remote maintenance and remote diagnosis.
(9) WEB issuing function
By the electric power data browing system of Web server, can realize the data interaction of the other system such as PD2100 main station system and MIS net, the various pictures such as the winding diagram of automated system, form, curve all can change into the Web page, client user is carried out to rights management simultaneously, check relevant information by authorization conditions.
Two, feeder automation (FA)
(1) major function
Information gathering and processing capacity;
SOE record and reporting functions;
Quality of power supply statistical function;
Local operation function;
Switch on-line monitoring function;
Distant place parameter setting function;
Local debug function;
System time adjustment function;
Complete defencive function;
Accurately fault detect, location and service restoration function;
Two-way locking overcurrent protection function;
Stage backup protection function;
Reclosing, after accelerated protection function;
Breaker fail protection function;
Fault Isolation function;
Fast network recombination function;
High reliability and non-maintaining;
Equipment self-diagnosis, self-recovering function;
The Power supply function of multiple voltage grade;
Loss protecting and power monitoring function;
Complete storage battery operation is controlled and maintenance function;
Input, output loop have function of safety protection;
Networking capability flexibly;
Adapt to distribution network structure ring-like, star-like, chain structure combination in any;
Distribution FA system has plurality of operating modes, chooses at random;
Have the features such as high speed, selectivity, reliability, high sensitivity, failure removal reaches Millisecond:
Support the multiple stipulations such as IEC101/103/104, CDT, DNP3.0
Distribution substation is the intermediate link of distribution automation system, between distribution main website and distribution terminal (FTU, TTU etc.), realize collection and the forwarding of the data such as remote measurement, remote signalling, remote control, completing Fault Identification, the Fault Isolation of region within the jurisdiction and restoring electricity is FA function.Distribution substation is generally placed on electric substation, can communicate by letter with the RTU of electric substation, and by RTU, the information such as state information, protection information and the electric weight of collection outlet switch, for feeder automation provides basis for estimation.
Distribution terminal is distribution automation system data acquisition and control actuating equipment, has the functions such as remote measurement, remote signalling, remote control, data remote.Distribution terminal comprises FTU, DTU, TTU etc.FTU, DTU, except normal remote moving function, also have fault detection capability, and fault message is sent to substation and main website, together with distribution main website, realize feeder automation function with distribution substation.The information of distribution transforming is gathered by TTU, and TTU utilizes GPRS module by commmunication company's data network, and data are sent to distribution substation or distribution main website.
Distribution terminal mainly comprises feeder terminal unit, distribution transformer terminal unit, distribution automation remote terminal.
One, distribution detection and control terminal equipment
(1) feeder terminal unit
Feeder terminal unit comprises FTU (Feeder Terminal Unit) and DTU (Distribution Terminal Unit).FTU is arranged on the post in distribution feeder loop, switch rule etc. are located, and DTU is arranged on switching station, distribution substation etc. and locates, and has remote signalling, remote measurement, remote control and fault current detection function.
(2) distribution transforming terminal unit
TTU (Transformer Terminal Unit) is the various operational factor collections that are applied to distribution transformer, the terminal unit of measurement.
Two, the basic function of detection and control terminal
(1) three is distant
Remote measurement (YC), remote measurement is often divided into again important remote measurement, less important remote measurement, general remote measurement and always adds remote measurement etc., and telemetry function is usually used in: the 1. meritorious and idle collection of transformer; 2. the active power collection of circuit; 3. busbar voltage and line signal current acquisition; 4. the collection such as temperature, pressure, flow; 5. frequency collection; 6. main transformer oil temperature gathers and other analog signal amounts collections.
Remote signalling (YX), generally adopts passive touch point mode, i.e. the input of a certain road remote signalling amount is exactly the contact of a pair of relay, or closed, or disconnects.By YX terminal board by the closed of relay contact or disconnect and convert low level or high level signal to and send into substation and process.
Remote control (YK), generally adopts passive touch point mode, requires its performance factor to be greater than 99.99%.The performance factor of so-called YX refers to the probability of its not misoperation, and general tripping is not thought incorrect.Distant control function be usually used in circuit breaker, on-pole switch etc. point, close the function that can adopt Control with the switching of capacitor, reactor and other.
(2) sequence of events recording (SOE)
An important indicator of sequence of events recording is temporal resolution.Resolution can be divided into station in and station between two kinds.
The station intrinsic resolution of SOE, refers in same substation (RTU), occurs in sequence after a string event the minimum time that can recognize between two events.In the station of SOE, resolution General Requirements is less than 5ms.The size of its resolution depends on the clock accuracy and the method for obtaining event of substation, and this is the performance requirement to substation.
Resolution between the station of SOE, refers between each substation (RTU) and occurs in sequence after a string event, discernmible minimum time between two events, and this depends on the error of system clock and the error in dipping of channel delay etc.Between the station of SOE, resolution General Requirements is less than 10ms, and this is the performance requirement to whole automated system.
(3) system clock check and correction
Between distribution substation (FTU), SOE resolution is a system index, and it requires the clock of each substation/FTU strictly to synchronize with the clock at height center.At present, the measure of taking has:
The temporal frequency providing with global position system GPS synchronously to time, effectively ensure SOE resolution index.This method need to be laid GPS receiver, antenna and amplifier by point between the station at each station, and is connected with substation etc. by port.
Adopt software to time, the communication protocols such as SC1801, CDT, DNP, IEC104, IEC101 provide software to time means.Software on time owing to being subject to the impact of traffic rate, need to take correction measure.Adopt software to time method do not need to increase hardware device.
(4) certainly recover and certainly detect
Distribution substation, FTU, DTU etc. are as the data acquisition unit of power distribution automation, must guarantee to keep to complete sustainedly and stably and the communicating by letter of SCADA, and report current collection situation and receive every order that main station system is assigned.But substation, FTU, DTU in one have powerful electromagnetic interference " race flies ' or the abnormal conditions such as instantaneous interruption of communicating by letter; if do not add special processing; all likely cause substation, FTU to crash; therefore to require substation, FTU; DTU, in the time running into above-mentioned situation, recover in the short period of time automatically, restarts executive program.
(5) communication function
Communicating requirement substation, FTU, DTU can and accept the order of upper level equipment by the information reporting collecting.Communication should have the function of supporting multiple stipulations and multiple communication channel.
(6) fault detection capability should have fault-signal capturing ability, and the location, isolation and the non-fault zone that the possess fault zone ability that restores electricity.
The above is the preferred embodiment of the present invention, for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, and these improvements and modifications are also regarded as protection scope of the present invention.
Claims (8)
1. distribution automation system, comprises distribution main website, distribution substation and distribution terminal, it is characterized in that, described distribution main website is connected with distribution substation by fiber optic Ethernet, and described distribution substation is connected with distribution terminal by optical fiber ring network;
Responsible supervision and the management to global information of described distribution main website, in order to whole power distribution network is carried out to data acquisition and monitoring, complete the troubleshooting in network-wide basis, equipment control and GIS-Geographic Information System are provided simultaneously, and improve distribution advanced applied software, to realize the optimization operation to whole distribution system;
Described distribution substation is connecting distribution terminal and distribution main website, in order to manage power distribution station end watch-dog, the signal of distribution terminal is gathered, gathers, is uploaded to distribution main website, the instruction of distribution main website is forwarded to distribution terminal simultaneously;
Described distribution terminal mainly, in order to complete data acquisition, the control of switching devices and the detection of fault and the identification to primary equipment, has the functions such as remote measurement, remote signalling, remote control, data remote, and fault message is sent to distribution substation and distribution main website.
2. distribution automation system according to claim 1, it is characterized in that, described distribution main website comprises primary data server, preliminary data server, GIS work station, traffic control station, electric energy metered system, form work station, maintenance work station, the first prepositive communication computer, second communication front end processor and clock system, described primary data server, preliminary data server, GIS work station, traffic control station, electric energy metered system, form work station, maintenance work station, the first prepositive communication computer, second communication front end processor and clock system respectively access data bus interconnect between two, described the first prepositive communication computer and second communication front end processor respectively incoming fiber optic Ethernet are connected with distribution substation.
3. distribution automation system according to claim 1, is characterized in that, described fiber optic Ethernet comprises SDH fiber optic Ethernet.
4. distribution automation system according to claim 1, is characterized in that, described optical fiber ring network is for adopting dicyclo self-healing optical fiber ring network.
5. distribution automation system according to claim 1, is characterized in that, described power distribution station end comprises loop-network switch cabinet and/or distribution switching station.
6. distribution automation system according to claim 1, is characterized in that, described distribution terminal comprises FTU, DTU and TTU, and described FTU connects outdoor pole top switch, and described DTU connects loop-network switch cabinet, and described TTU connects distribution transformer.
7. distribution automation system according to claim 1, is characterized in that, described primary equipment comprises one or more in outdoor pole top switch, loop-network switch cabinet, distribution transformer and distribution switching station.
8. according to the distribution automation system described in claim 1 to 7 any one, it is characterized in that, described distribution main website comprises electrical power distribution automatization system, distribution GIS-Geographic Information System and Distribution Management System, described electrical power distribution automatization system comprises distribution SCADA subsystem, substation automation subsystem and feeder automation subsystem, processes in real time in order to realize data acquisition, operating condition monitoring and controlling, fault; Described distribution GIS-Geographic Information System comprises the equipment management subsystem and user profile subsystem, in order to distribution SCADA system interconnect, real time data is shown on geography information figure; Described Distribution Management System comprises distribution Work management system, management of power use automated system, distribution advanced applied software, in order to realize the senior application of distribution management, outage management, engineering management, electric energy measuring management and distribution.
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