CN104091482B - Operation and maintenance simulating training system of smart distribution grid - Google Patents

Operation and maintenance simulating training system of smart distribution grid Download PDF

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Publication number
CN104091482B
CN104091482B CN201410340035.XA CN201410340035A CN104091482B CN 104091482 B CN104091482 B CN 104091482B CN 201410340035 A CN201410340035 A CN 201410340035A CN 104091482 B CN104091482 B CN 104091482B
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distribution
power distribution
simulation
training
circuit
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CN201410340035.XA
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Chinese (zh)
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CN104091482A (en
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李宏伟
潘志远
张正茂
郑鑫
许光
王兴念
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国家电网公司
国网技术学院
珠海许继电气有限公司
珠海许继芝电网自动化有限公司
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Priority to CN201410340035.XA priority Critical patent/CN104091482B/en
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Abstract

The invention discloses an operation and maintenance simulating training system of a smart distribution grid. The operation and maintenance simulating training system comprises a power distribution automation system and a distribution network hybrid simulation system. The power distribution automation system comprises a power distribution automation main station system, a feeder automation system, a communication system and a power distribution simulation information system. The power distribution automation system is used for power distribution dispatching operation and maintenance simulating training. The distribution network hybrid simulation system comprises power distribution primary equipment, power distribution secondary equipment, a power distribution network real-time simulator, a digital physical interface device, a secondary circuit fault simulation device and a training station machine. When the distribution network hybrid simulation system is used for simulating power grid faults, the primary equipment and the secondary equipment can be switched on and off. According to the operation and maintenance simulating training system of the smart distribution grid, the real power distribution automation main station system is used as a core, a simulation power distribution automation terminal, a power distribution automation simulation main station, the real power distribution automation primary equipment, the real power distribution automation secondary equipment and the communication system are integrated, and therefore a comprehensive and real power distribution automation training environment from the terminal to the system can be achieved.

Description

Intelligent distribution network O&M simulation training system
Technical field
The present invention relates to intelligent distribution network O&M simulation training system.
Background technology
In recent years, intelligent power distribution network construction is fast-developing, and the update of distribution net equipment and electrical power distribution automatization system makes the on-the-spot demand to distribution fortune maintainer increase rapidly, and the training requirement of power distribution network operation and producers is very urgent.As everyone knows, the academic level of distribution operation and maintenance personnel and difference of technology level are comparatively large, and overall qualities are in urgent need to be improved.Therefore, distribution regulation and control one simulation training system must be set up, set up half Training Environment in kind, it is combined with digital simulation technique, the demand of high-level distribution operation maintenance personnel training could be met.
At present, what domestic distribution O&M simulation training system investigation and application was carried out is fewer.The training method of usual employing is that trainer explains the+mode of equipment material object display, and owing to lacking simulation training environment, student is difficult to obtain the training of image and grasps O&M practical operation technology fast, and result of training cannot reach requirement.The proposition of intelligent distribution network O&M simulation training system, for the training of distribution operation maintenance personnel is filled with new intension, also for the development of power distribution automation specifies direction.
In order to the operation maintenance technology that distribution operation maintenance personnel can be made skillfully to grasp distribution first and second equipment and electrical power distribution automatization system, power distribution network one secondary device model and scene should be set up based on virtual reality technology, and set up distribution regulation and control main station simulation system, build intelligent distribution network O&M simulation training system.In distribution virtual reality emulation scene and regulation and control main station simulation system, distribution regulation and control run and operation maintenance personnel can carry out operation on the spot in person and tour to the equipment used in scene and system, to ensureing that safe, reliable, efficient, the high-quality of power distribution network have run good facilitation.
Intelligent distribution network O&M simulation training system will link closely the actual training requirements such as on-the-spot actual new equipment, new technology, realize typical distribution net one secondary device, the Physical Mechanism of main station system emulates and operative scenario emulates, support the training to distribution operation and maintenance professional and technical personnel, examination and qualification, possess and improve and Training Management flexibly, examination, test experiments and scientific research function.System has the design feature of authenticity, consistance, dirigibility, opening and practicality, and laminating training on electric power education is actual, has broad application prospects.
Summary of the invention
For solving the deficiency that prior art exists, the invention discloses intelligent distribution network O&M simulation training system, in conjunction with content and the mechanical floor aggregated(particle) structure of actual electrical power distribution automatization system, build the simulation learning situation of four corresponding levels such as distribution primary equipment layer, distribution automation main website layer, distribution network terminal mechanical floor, distribution communication system layer, realize each professional real training target of power distribution automation.
For achieving the above object, concrete scheme of the present invention is as follows:
Intelligent distribution network O&M simulation training system, comprises electrical power distribution automatization system and distribution hybrid simulation system, and described electrical power distribution automatization system comprises power distribution automation main station system, feed line automatization system, communication system and power distribution simulation infosystem; Described electrical power distribution automatization system is used for distribution management and running and safeguards emulation training; Described distribution hybrid simulation system comprises distribution primary equipment, distribution secondary device, power distribution network real-time simulator, digital physical interface device, secondary circuit fault simulation apparatus and training station machine, when described distribution hybrid simulation system is used for simulating grid fault, the folding condition of primary equipment, secondary device switch;
Described power distribution automation main station system is divided into distribution main website layer and terminating layer double-layer structure, wherein adopts optical fiber communication terminal by fiber optic communication network through gathering the advance data acquisition server of net access power distribution automation main station system; " the distribution hybrid simulation equipment " of simulation great amount of terminals data is through gathering the advance data acquisition server of net access power distribution automation main station system; The terminal of radio communication is adopted after radio channel couple in router, to access public network acquisition server through fire wall by wireless communication networks, and through forward and reverse spacer assembly access power distribution automation main station system.
Described feed line automatization system comprises feeder automation circuit and circuit dynamic similation platform, and described feeder automation circuit comprises overhead transmission line type feeder automation circuit, overhead transmission line concentrated feeder automation circuit, cable line concentrated feeder automation circuit and overground cable joint line concentrated feeder automation circuit on the spot; Described circuit dynamic similation platform emulates each section singlephase earth fault of backbone of 10kV circuit by current-source arrangement simulated failure and phase fault electric current is also sent into once, secondary device, realizes the simulation of type overhead transmission line, concentrated overhead transmission line, concentrated cable and concentrated overground cable mixed line fault and logical relation on the spot.
Described feeder automation circuit comprises three groups of analog lines, and wherein first group is two interconnectors, for the concentrated feeder automation fault handling pattern of analog demenstration overground cable joint line and cable line; Second and third group for single interconnector, for concentrated and the type feeder automation fault handling pattern on the spot of analog demenstration overhead transmission line.
Described power distribution simulation infosystem is for generation of great amount of terminals information and adopt 104, the 101 communication protocols access power distribution automation main station systems of DL/T634 " telecontrol equipment and system " standard (IEC60870), has the little but regulation and control running environment that is power distribution automation main website under the huge running environment of number of nodes of single communication node data traffic for analog ligand operation of power networks data message.
Described communication system comprises optical fiber telecommunications system and wireless communication system, adopt radio communication access at feeder automation user demarcation switchgear, the equipment except feeder automation user demarcation switchgear adopts optical fiber communication mode to access power distribution automation main station system; Wherein optical fiber communication Access Network adopts EPON (PON) technology, and transmission network adopts intelligent acess power distribution automation main website; Radio communication access way adopts public network GPRS technology.
The communication mode of described communication system, all adopts the unilateral authentication encryption technology of unsymmetrical key technology to carry out security protection for distant control function.
Described distribution real-time simulator is for setting up the electrical-magnetic model of power distribution network primary equipment, by hybrid simulation interfacing equipment by the AC network electromagnetic transient digital simulation of distribution real-time simulator and real physical equipment slitless connection, form the combination of distribution Digital Simulation and real physical equipment and analogue means;
Described distribution real-time simulator comprises the power distribution network electromagnetic transient Model such as power supply, feeder line, transformer, load breaker, disconnecting link and lumped resistance, inductance and electric capacity, realizes the system optional position such as short circuit and broken string of the equipment such as bus, circuit, transformer and the fault model of any type.
Described digital physical interface device comprises the digital analog converter of high-speed, high precision synchronism output, high-speed communication and On-off signal output system and special intelligent electric current, the voltage power amplifier of hybrid simulation, described digital analog converter by signal transmission to high-speed communication and On-off signal output system, the signal obtained is sent to intelligent electric current, voltage power amplifier by high-speed communication and On-off signal output system, carries out the amplification of signal.
Described secondary circuit fault simulation apparatus simulates various broken string, ground connection, short circuit, wrong line, coil burnout by the various node of serial or parallel connection, resistance and electric capacity in the secondary circuit of distribution terminal with low-voltage variation, it is bad to contact, fuse blows and stray capacitance fault.
Distribution primary equipment and distribution secondary device adopt true physical equipment, set up typical localized power distribution net, based on digital physical mixed emulation technology, emulated the operation characteristic of power distribution network first and second equipment by digital analog interface technology exactly, promote day-to-day operation and the accident treatment technical ability of distribution operation maintenance personnel.Distribution hybrid simulation real training switchgear adopts transparent design for ease of understanding terminal inner structure &processes, and course of action is high-visible, and inner structure is very clear; Distribution hybrid simulation real training switchgear machinery long service life, is applicable to frequent operation.Distribution hybrid simulation system comprises 1 and overlaps user demarcation switchgear (containing distribution terminal), 3 real training DTU, 2 covers real training intelligent vacuum ring main unit (4 load switching units), 1 covers real training intelligent vacuum ring main unit (3 load switching units, 1 demarcation circuit breaker unit) on type real training on-pole switch equipment (containing distribution terminal), 1 cover concentrated real training on-pole switch equipment (containing distribution terminal), 1 cover real training post on the spot.
Controller switching equipment station training system is for equipment training machine corresponding to this equipment configuration.Equipment training machine loads the supporting courseware supporting distribution primary equipment, secondary device and related application thereof, can the contents such as distribution first and second equipment inner structure, element composition, principle of work and using method be described in detail and be analyzed, also can to scene once, secondary device carries out interactive operation, and is furnished with the practical operation checking system for controller switching equipment.
Distribution hybrid simulation system realizes comprehensive trainings such as distribution primary equipment, the secondary device principle of work and power, concrete structure, interactive operation, operation maintenance.
Beneficial effect of the present invention:
The application contain electrical power distribution automatization system from main website, once, secondary device and communication, meet the training of the use object of the electrical power distribution automatization systems such as power distribution network management and running personnel, operation maintenance and operation maintainer.
The application with true power distribution automation main station system for core, application simulation distribution power automation terminal, power distribution automation emulation main website and true power distribution automation are once, secondary device, communication system be integrated, realize the comprehensively real Training Environment of power distribution automation from terminal to system.Student is giveed training with the completely the same production environment of electrical power distribution automatization system by setting up, allow student at real environment learning and rest in electrical power distribution automatization system the various tasks that may occur, every basic skills such as training power distribution network operational management personnel, dispatcher's scheduling, installation, debugging, O&M, and the ability how applying that intelligent system correctly judges and process distribution network failure.
Accompanying drawing explanation
Fig. 1 intelligent distribution network O&M simulation training system hardware structure and schematic diagram data;
Fig. 2 power distribution automation main station system (containing real training) software architecture figure;
The relation schematic diagram of Fig. 3 circuit dynamic similation platform, controller switching equipment and power distribution automation main station system;
Fig. 4 concentrated robotization real training district wiring schematic diagram;
Fig. 5 (a) overhead transmission line is type feeder automation circuit schematic diagram on the spot;
Fig. 5 (b) overhead transmission line concentrated feeder automation circuit schematic diagram;
Fig. 6 distribution hybrid simulation system structural representation;
In figure, 1, power distribution automation main station system, 2, distribution terminal, 3, secondary circuit fault simulation apparatus, 4, electric current, voltage amplifier, 5, real-time interface device, 6, distribution hybrid simulation system, 7, switch, 9, station machine is trained, 10, power distribution network real-time simulator, 11, digital physical interface device, 12, the mutual machine of optical fiber, 13, switch.
Embodiment:
Below in conjunction with accompanying drawing, the present invention is described in detail:
As shown in Figure 1, intelligent distribution network O&M simulation training system, comprise electrical power distribution automatization system and distribution hybrid simulation system, described electrical power distribution automatization system comprises power distribution automation main station system, feed line automatization system, communication system and power distribution simulation infosystem; Described electrical power distribution automatization system is used for distribution management and running and safeguards emulation training; Described distribution hybrid simulation system comprises distribution primary equipment, distribution secondary device, power distribution network real-time simulator, digital physical interface device, secondary circuit fault simulation apparatus and training station machine, when described distribution hybrid simulation system is used for simulating grid fault, the folding condition of primary equipment, secondary device switch.
electrical power distribution automatization system
Power distribution automation main website experience system adopts layering, distributed structure/architecture pattern, mainly comprise basic platform, distribution SCADA, apply based on the distribution SCADA of geographical background, feeder fault process, distribution analytical applications, WEB issuing function, power distribution simulation, courseware and check function, typical case function etc., meet the real training demand of auxiliary tone SCADA day-to-day operation, supervision, use, data maintenance, preposition, stipulations etc., its concrete software configuration as shown in Figure 2.Wherein power distribution automation main station system is divided into student's workstation, teacher's workstation according to application scenarios.Student's workstation is used for the training of student, and teacher's workstation user teacher sets the work such as typical case, courseware, examination and student management.
By overhead transmission line, type feeder automation circuit, overhead transmission line concentrated feeder automation circuit, cable line concentrated feeder automation circuit, overground cable joint line concentrated feeder automation circuit and circuit dynamic similation platform form feed line automatization system on the spot.Circuit dynamic similation platform emulates each section singlephase earth fault of backbone of 10kV circuit by current-source arrangement simulated failure and phase fault electric current is also sent into once, secondary device, realize the simulation of type overhead transmission line, concentrated overhead transmission line, concentrated cable and concentrated overground cable mixed line fault and logical process relation on the spot, as shown in Figure 3.Feeder automation circuit is made up of 3 groups of analog lines, and wherein the 1st group is two interconnectors, the concentrated feeder automation fault handling pattern of analog demenstration overground cable joint line and cable line; 2nd, 3 groups is single interconnector, the concentrated of analog demenstration overhead transmission line and on the spot type feeder automation fault handling pattern.
As shown in Fig. 4 and Fig. 5 a-Fig. 5 b; CB1, CB2, CB3, CB4, CB5, CB6, CB7 are the intelligent protection device for imitating substation wire-outgoing breaker; FS1-FS5 is built on stilts backbone segmentation load switch equipment (containing distribution terminal); LS1, LS3 are interconnection switch equipment (containing distribution terminal); PS2-PS4 is user demarcation load switch equipment (containing distribution terminal); FN is distributed electrical source apparatus (wind power generation), TYN distributed electrical source apparatus (solar electrical energy generation).
In Fig. 4 there is the explanation of permanent fault feeder automation principle of work in D point:
(1) transformer station 10 kV outgoing line isolating switch CB5 detects separating brake after fault.
(2) be installed on distribution terminal DTU in the VSR3 vacuum ring main unit between D district and G district and detect that electric current transfinites and continues decompression, produce fault remote signalling and be uploaded to main website.
(3) after power distribution automation main website receives the fault-signal of CB5 switch changed position and FS1, FS2, by the D district of localization of fault after FS2.
(4) power distribution automation main website sends the instruction of remote control separating brake, and L1 switch and block switch FS2 in the VSR3 vacuum ring main unit separately between D district and G district, by fault isolation.
(5) isolate successfully, power distribution automation main website during decision-making goes out between H district and K district VSR3 vacuum ring main unit as calculated L2 interconnection switch turn confession, power distribution automation main website sends remote control reclosing command, close L2 interconnection switch in outlet breaker CB5 and the VSR3 vacuum ring main unit between H district and K district, recovers the power supply of non-faulting section.
The feeder automation principle of work that breaks down of C district in Fig. 5 (a) is illustrated:
(1) CB1 detects fault current separating brake, at full line dead electricity, and line switching corresponding to FS1, FS2 is because of the whole separating brake of circuit decompression.
(2) CB1 is through 1S time delay reclosing, and switch FS1, FS2 obtain electric rear time-delay closing, if fault is transient fault, then closes a floodgate successfully; If fault is permanent fault, then CB1 detects that fault current trips again, and localization of fault is between switch FS2 and switch FS3, and main website closes a floodgate according to result of determination control CB1 between emergency area, the power supply of non-faulting section before recovery fault.
(3) power distribution automation main website closes a floodgate according to result of determination remote control LS3 between emergency area, and switch FS3 obtains electric rear time delay (delay time is setting value) and closes a floodgate, the power supply of non-faulting section after recovery fault.
There is phase fault in H district
(1), after fault occurs, wire-outgoing breaker CB1 detects separating brake after fault.Meanwhile, demarcation switch PS3 detects fault, separating brake, isolated fault.
(2), after transformer station's wire-outgoing breaker CB1 separating brake 1S, reclosing success, restores electricity.
There is singlephase earth fault in H district
Singlephase earth fault occurs, and demarcation switch PS3 directly excises fault, does not affect backbone and other user.
There is permanent fault feeder automation principle of work to C district in Fig. 5 (b) to illustrate:
(1) transformer station 10 kV outgoing line isolating switch CB3 detects separating brake after fault.
(2) FS1, FS2 detect that electric current transfinites and continues decompression, produce fault remote signalling and are uploaded to power distribution automation main website.
(3) after power distribution automation main website receives CB3 switch changed position, FS1, FS2 fault-signal, by localization of fault C district between block switch FS2 and FS3.
(4) power distribution automation main website sends the instruction of remote control separating brake, separately FS2, FS3, by fault section isolation.
(5) isolate successfully, power distribution automation main website sends remote control reclosing command, and close outlet breaker CB3, recovers the power supply of fault front end.
(6) isolate successfully, power distribution automation main website as calculated decision-making goes out LS3 interconnection switch and turns confession, and power distribution automation main website sends remote control reclosing command, and close LS2 interconnection switch, recovers the power supply of non-faulting section.
Power distribution simulation infosystem is for generation of great amount of terminals information and adopt 104, the 101 communication protocols access power distribution automation main station systems of DL/T634 " telecontrol equipment and system " standard (IEC60870), and analog ligand operation of power networks data message has the little but regulation and control running environment that is power distribution automation main website under the huge running environment of number of nodes of single communication node data traffic.
Communication system is made up of optical fiber telecommunications system and wireless communication system, adopts radio communication access at feeder automation user demarcation switchgear, and all the other equipment adopts optical fiber communication mode to access power distribution automation main station system.Wherein optical fiber communication Access Network adopts EPON (PON) technology, and transmission network adopts intelligent acess power distribution automation main website; Radio communication access way adopts public network GPRS technology.All communication modes, comprise optical fiber private network communication, the unilateral authentication encryption technology of unsymmetrical key technology need be adopted to carry out security protection for distant control function.
distribution hybrid simulation system
Distribution hybrid simulation system comprises distribution real-time simulator, hybrid simulation interfacing equipment, secondary circuit fault simulation apparatus, distribution secondary device and training station machine, wherein distribution real-time simulator is for setting up the electrical-magnetic model of power distribution network primary equipment, by hybrid simulation interfacing equipment by the AC network electromagnetic transient digital simulation of distribution real-time simulator and real physical equipment slitless connection, form distribution Digital Simulation and real physical equipment and analogue means and organically combine.(see Fig. 6)
Power distribution network real-time simulator is used for setting up power distribution network electromagnetic transient Model, comprise power supply, feeder line, transformer, load breaker, disconnecting link and lumped resistance, inductance and electric capacity etc., achieve the fault model of the system optional positions such as the short circuit of the equipment such as bus, circuit, transformer and broken string and any type simultaneously, arbitrary combination can be carried out to build more complicated combined failure model.
Hybrid simulation interfacing equipment is made up of high-speed, high precision synchronism output digital analog converter, high-speed communication and On-off signal output system and hybrid simulation special intelligent type electric current, voltage power amplifier.
Secondary circuit fault simulation apparatus is by simulating various broken string, ground connection, short circuit, wrong line, coil burnout at distribution terminal with the open various node of serial or parallel connection, resistance, the electric capacity etc. in the secondary circuits such as entry loop, control loop, ac circuit, straight-flow system, current/voltage loop of low-voltage variation, contact bad, the fault such as fuse blows, stray capacitance.
Distribution secondary device adopts true physical equipment, set up typical localized power distribution net, based on digital physical mixed emulation technology, emulated the operation characteristic of power distribution network first and second equipment exactly by digital analog interface technology, promote day-to-day operation and the accident treatment technical ability of distribution operation maintenance personnel.Distribution hybrid simulation real training switchgear adopts transparent design for ease of understanding terminal inner structure &processes, and course of action is high-visible, and inner structure is very clear; Adopt special processing, extension device machinery serviceable life, be applicable to frequent operation.Distribution hybrid simulation system comprises 1 and overlaps user demarcation switchgear (containing distribution terminal), 3 real training DTU, 2 covers real training intelligent vacuum ring main unit (4 load switching units), 1 covers real training intelligent vacuum ring main unit (3 load switching units, 1 demarcation circuit breaker unit) on type real training on-pole switch equipment (containing distribution terminal), 1 cover concentrated real training on-pole switch equipment (containing distribution terminal), 1 cover real training post on the spot.
Controller switching equipment station training system is for equipment training machine corresponding to this equipment configuration.Equipment training machine loads the supporting courseware supporting distribution primary equipment, secondary device and related application thereof, can the contents such as distribution first and second equipment inner structure, element composition, principle of work and using method be described in detail and be analyzed, also can to scene once, secondary device carries out interactive operation, and is furnished with the practical operation checking system for controller switching equipment.
As shown in Figure 3, circuit dynamic similation platform through real-time interface device through electric current, power amplifier pulse current injectingt secondary circuit analogue means, secondary circuit analogue means produces power distribution network accident information and injects distribution terminal, distribution terminal, by communication system, adopts 104 stipulations signal being given power distribution automation main station system.When electric current exceedes the restriction of setting, terminal sends signal by secondary circuit analogue means, driving switch emergency stop valve trip, and switch sub-signal by secondary circuit analogue means and terminal deliver to power distribution automation main station system.
As shown in Figure 6, by training station machine setting power distribution network real-time simulator analogue simulation power distribution network accident, power distribution network real-time simulator accesses distribution terminal equipment simulate signal through secondary circuit fault simulation apparatus and Data Physical interfacing equipment, distribution terminal equipment is through communication network signal being given power distribution automation main station system, and distribution terminal equipment drives distribution primary equipment switch or ring main unit exploitation to carry out action according to the signal received simultaneously.
Distribution hybrid simulation system realizes comprehensive trainings such as distribution primary equipment, the secondary device principle of work and power, concrete structure, interactive operation, operation maintenance.

Claims (9)

1. intelligent distribution network O&M simulation training system, it is characterized in that, comprise electrical power distribution automatization system and distribution hybrid simulation system, described electrical power distribution automatization system comprises power distribution automation main station system, feed line automatization system, communication system and power distribution simulation infosystem; Described electrical power distribution automatization system is used for distribution management and running and safeguards emulation training; Described distribution hybrid simulation system comprises distribution primary equipment, distribution secondary device, power distribution network real-time simulator, digital physical interface device, secondary circuit fault simulation apparatus and training station machine, when described distribution hybrid simulation system is used for simulating grid fault, the folding condition of primary equipment, secondary device switch;
Described power distribution automation main station system is divided into two-way by switch, each road is all connected with distribution terminal by corresponding switch, each distribution terminal is all furnished with switchgear, distribution terminal is all connected with power distribution network real-time simulator by digital physical interface device, and power distribution network real-time simulator is connected with training station machine.
2. intelligent distribution network O&M simulation training system as claimed in claim 1, is characterized in that, described power distribution automation main station system adopts layering, distributed structure/architecture pattern.
3. intelligent distribution network O&M simulation training system as claimed in claim 1, it is characterized in that, described feed line automatization system comprises feeder automation circuit and circuit dynamic similation platform, and described feeder automation circuit comprises overhead transmission line type feeder automation circuit, overhead transmission line concentrated feeder automation circuit, cable line concentrated feeder automation circuit and overground cable joint line concentrated feeder automation circuit on the spot; Described circuit dynamic similation platform emulates each section singlephase earth fault of backbone of 10kV circuit by current-source arrangement simulated failure and phase fault electric current is also sent into once, secondary device, realizes the simulation of type overhead transmission line, concentrated overhead transmission line, concentrated cable and concentrated overground cable mixed line fault and logical relation on the spot.
4. intelligent distribution network O&M simulation training system as claimed in claim 3, it is characterized in that, described feeder automation circuit comprises three groups of analog lines, wherein first group is two interconnectors, for the concentrated feeder automation fault handling pattern of analog demenstration overground cable joint line and cable line; Second and third group for single interconnector, for concentrated and the type feeder automation fault handling pattern on the spot of analog demenstration overhead transmission line.
5. intelligent distribution network O&M simulation training system as claimed in claim 1, it is characterized in that, described communication system comprises optical fiber telecommunications system and wireless communication system, adopt radio communication access at feeder automation user demarcation switchgear, the equipment except feeder automation user demarcation switchgear adopts optical fiber communication mode to access power distribution automation main station system; Wherein optical fiber communication Access Network adopts passive optical network PON technology, and transmission network adopts intelligent acess power distribution automation main website; Radio communication access way adopts public network GPRS technology.
6. intelligent distribution network O&M simulation training system as claimed in claim 5, is characterized in that, the communication mode of described communication system, all adopts the unilateral authentication encryption technology of unsymmetrical key technology to carry out security protection for distant control function.
7. intelligent distribution network O&M simulation training system as claimed in claim 1, it is characterized in that, described distribution real-time simulator is for setting up the electrical-magnetic model of power distribution network primary equipment, by hybrid simulation interfacing equipment by the AC network electromagnetic transient digital simulation of distribution real-time simulator and real physical equipment slitless connection, form the combination of distribution Digital Simulation and real physical equipment and analogue means;
Described distribution real-time simulator comprises power supply, feeder line, transformer, load breaker, disconnecting link and lumped resistance, inductance and electric capacity, for the fault model of the short circuit of analog bus, circuit and transformer equipment and the system optional position of broken string and any type.
8. intelligent distribution network O&M simulation training system as claimed in claim 1, it is characterized in that, described digital physical interface device comprises the digital analog converter of high-speed, high precision synchronism output, high-speed communication and On-off signal output system and special intelligent electric current, the voltage power amplifier of hybrid simulation, described digital analog converter by signal transmission to high-speed communication and On-off signal output system, the signal obtained is sent to intelligent electric current, voltage power amplifier by high-speed communication and On-off signal output system, carries out the amplification of signal.
9. intelligent distribution network O&M simulation training system as claimed in claim 1; it is characterized in that, described secondary circuit fault simulation apparatus simulates various broken string, ground connection, short circuit, wrong line, coil burnout by the various node of serial or parallel connection, resistance and electric capacity in the secondary circuit of distribution terminal with low-voltage variation, contact bad, fuse blows and stray capacitance fault.
CN201410340035.XA 2014-07-17 2014-07-17 Operation and maintenance simulating training system of smart distribution grid CN104091482B (en)

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