CN102436766A - Simulation training system of relay protection in subway OCC power dispatching and method thereof - Google Patents
Simulation training system of relay protection in subway OCC power dispatching and method thereof Download PDFInfo
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Abstract
The invention discloses a simulation training system of relay protection in subway OCC power dispatching and a method thereof. The system comprises: a fault processing terminal, which is used for operation by a student; a fault arranging terminal, which is used for operation by a teacher; a microprocessor, which is used for receiving and processing operation data of the student and the teacher; a memory, which is used for storing a subway OCC power system simulated diagram program; and a database server, which is used for storing data supporting the operation of the microprocessor. Besides, the fault processing terminal, the fault arranging terminal, the memory and the database server are connected with the microprocessor. According to the invention, beneficial effects are as follows: various actual equipment faults can be accurately simulated as well as situations of failed operation and misoperation of a protection and breaker can also be simulated; a mixing simulation method is employed to establish a model; that is, if it is allowed to use a logic determination method for protection, the logic determination method is used whenever possible; if it is not allowed to use the logic determination method, a fixed value determination method is used; therefore, a motion rule of relay protection in reality can be accurately simulated; and requirements on accuracy and a real-time property can be met simultaneously.
Description
Technical field
The present invention relates to simulation/emulation technology, specifically be meant relay protection simulation training system and method in a kind of subway OCC power scheduling.
Background technology
Along with Chinese economic development, the railway cause also is in the stage of high speed development.Diversification, multi-form development be the direction of China railways development just, also is the inevitable outcome of China's national situation geographic distribution.Along with high-speed railway, urban light rail, the continuous development of city underground, various types of rolling stocks are also in development and update and application rapidly.System emulation is the comprehensive of new and high technologies such as computing machine, network, graph image, multimedia, soft project, information processing, automatic control as a comprehensive subject; Experienced physical model emulation; In the stages such as analog computer emulation and digital machine emulation, it is a complex art that system actual or imagination is carried out dynamic test research by system model.The development of Along with computer technology, appliance computer carries out the attention that system emulation receives people day by day.Computer simulation technique has combined experiment and has analyzed this two kinds of methods; The method of analyzing is used for simulated experiment; The fundamental physical quantity and the similarity principle that fully use oneself to have; Can set up the mathematical model of waiting the system of studying, adopt and the basic research method that experimentizes identical to the actual physical system, move emulation experiment on computers.Because emulation replaces entity to test with model; Therefore; It has characteristics such as economy, safety, experimental period is short, and these characteristics make emulation technology as a kind of analysis, design system and trainer's favourable instrument, have been widely used in nearly all engineering and non-engineering field.
The domestic city field of track traffic does not still have complete OCC power scheduling simulation training system at present, but increasing industry is progressively strengthening the application to emulation training, wherein the relay protection system simulation study is also had certain progress.
Existing relay protection emulation mode mainly includes logic determines method and definite value determining method.
The logic determines method is based on safeguard rule; In reality realizes; It searches relevant electric switch and protective device through setting up the action rules storehouse of corresponding each protective device according to fault scene, type, and the action rules according to correspondence judges whether to start protective device again.
Logical approach emulation reflects selectivity through the switching logic of setting from the trouble spot to the periphery with the cooperation of protective relaying device time delay of action, owing to need not to carry out calculation of fault, therefore can be good at satisfying the requirement of real-time, is convenient to debug.But receive the method for operation to influence bigger protection for accident that is not contemplated in advance or protection domain, then can produce false judgment.
The emulation of definite value determining method is meant when system breaks down judge according to the variation of each electric parameters in the electrical network whether protective relaying device satisfies certification condition, thereby judges that can protective device move.
Fixed value method emulation is the change of computing system electric parameters exactly, and the definite value that has with mathematical model cooperates to cooperate with time delay of action and reflect selectivity, reflects the sensitivity requirement by self model.The method need be set up mathematical model in detail accurately; Simultaneously owing to need carry out a large amount of electric power systems in the simulation process when being on a grand scale; Therefore the time that needs labor though can be good at satisfying the requirement of emulation degree of accuracy, well requirement of real time.
Summary of the invention
The objective of the invention is to overcome the shortcoming and defect of above-mentioned prior art; Relay protection simulation training system and method in a kind of subway OCC power scheduling is provided; Can satisfy the requirement of real-time and accuracy simultaneously, for subway OCC power dispatcher simulation training system provides good fault and defencive function.
The object of the invention is realized through following technical proposals: relay protection simulation training system in the subway OCC power scheduling; Comprise the fault handling end that is used for student operation, the fault that is used for teacher's operation end is set, be used to receive and handle student and teacher's service data microprocessor, store the storer of subway OCC power system simulation figure program and store the database server of support microcontroller computing, fault handling end, fault are provided with end, storer and database server and all are connected to microprocessor.
It all is common PC that said fault handling end and fault are provided with end.
Data in the said database server comprise bug list, protection equipment list, protection type list, protection relation table and input/output relation table.
Include AC side equipment and DC side equipment among the said subway OCC power system simulation figure, wherein AC side equipment comprises interchange 35KV bus, 35KV looped network inlet wire and outlet, prepared auto restart, isolating switch, disconnector, tractive transformer and step-down transformer; DC side equipment comprises rectifier, direct current 1500V bus, dc feeder, isolating switch, disconnector, contact net and track.
Relay protection emulation training method in the subway OCC power scheduling may further comprise the steps:
(1) with subway OCC power system simulation diagram data boot memory; Various support data, fault are provided with data and relay protection realistic model data importing database server, and microprocessor can be provided with subway OCC power system simulation figure on the end and the display of fault handling end in fault immediately and show;
When (2) teacher need be provided with fault in subway OCC electric system; Be that operating troubles is provided with end and sends a message to microprocessor; Microprocessor receives after fault is provided with the message of end, handles, and calls in the database server data then and calculates; Through subway OCC power system simulation figure program in the storer simulation drawing being carried out state changes; Immediately send to fault end and fault handling end are set, the normal position of simulation drawing is shown as blueness, redness or yellow, and abort situation promptly appears dimmed;
(3) student is after viewing fault on the display screen; Warning or signal according to simulation drawing shows send corresponding dispatch command, after service data sends to microprocessor; Microprocessor is handled data; Judge its correctness, represent then that correctly this student's dispatch command is correct, mistake is then represented this student's dispatch command mistake.
The relay protection realistic model comprises AC side model and DC side model described in the above-mentioned steps (1), and wherein, the AC side model comprises route protection model, ac bus protection model, tranformer protection model; The DC side model comprises catenary protection model, rectifier protection model, dc bus protection model, turnover line protection model, track protection model and automatic reclosing model.
The fault that teacher described in the above-mentioned steps (2) is provided with comprises equipment component short circuit, disconnection fault and protection tripping fault and isolating switch tripping fault.
The invention has the beneficial effects as follows:
(1) the present invention's various device fault of simulating reality accurately also can be simulated protection and isolating switch tripping, maloperation situation;
(2) the present invention sets up model and adopts the hybrid simulation method; Promptly use in the protection that can use the logic determines method as far as possible; Can not use the use definite value determining method of logic determines method; Relay protection action rule in the simulating reality accurately, the requirement that promptly reaches accuracy also can reach the requirement of real-time simultaneously;
(3) database back-up system of the present invention comprises all devices type, and protection and isolating switch when increasing other types fault and protection, needn't be revised code, only need to revise database, has reduced the workload of later stage debugging.
Description of drawings
Fig. 1 is a structured flowchart of the present invention;
Fig. 2 is the electric power system simple diagram of subway;
Fig. 3 is layering protection illustraton of model.
Embodiment
Below in conjunction with embodiment the present invention is done further detailed description:
As shown in Figure 1; Relay protection simulation training system in the subway OCC power scheduling; Comprise the fault handling end that is used for student operation, the fault that is used for teacher's operation end is set, be used to receive and handle student and teacher's service data microprocessor, store the storer of subway OCC power system simulation figure program and store the database server of support microcontroller computing, fault handling end, fault are provided with end, storer and database server and all are connected to microprocessor.
It all is common PC that said fault handling end and fault are provided with end.
Data in the said database server comprise bug list, protection equipment list, protection type list, protection relation table and input/output relation table.
Be provided with AC side equipment and DC side equipment among the subway OCC power system simulation figure, wherein AC side equipment comprises 35KV bus, 35KV looped network inlet wire, outlet, prepared auto restart, isolating switch, disconnector, tractive transformer, the equipment such as step-down transformer of exchanging; DC side equipment comprises rectifier, direct current 1500V bus, dc feeder, isolating switch, disconnector, contact net, equipment such as track.
Relay protection emulation training method in the subway OCC power scheduling may further comprise the steps:
(1) with subway OCC power system simulation diagram data boot memory; Various support data, fault are provided with data and relay protection realistic model data importing database server, and microprocessor can be provided with subway OCC power system simulation figure on the end and the display of fault handling end in fault immediately and show;
When (2) teacher need be provided with fault in subway OCC electric system; Be that operating troubles is provided with end and sends a message to microprocessor, microprocessor receives after fault is provided with the message of end, handles; Calling in the database server data then calculates; Through subway OCC power system simulation figure program in the storer simulation drawing is carried out state and change, send to fault immediately end and fault handling end are set, the normal position of simulation drawing is shown as blueness, redness or yellow; Use various colors according to the voltage different mining, and abort situation appears dimmed promptly;
(3) student is after viewing fault on the display screen; Warning or signal according to simulation drawing shows send corresponding dispatch command, after service data sends to microprocessor; Microprocessor is handled data; Judge its correctness, represent then that correctly this student's dispatch command is correct, mistake is then represented this student's dispatch command mistake.
Relay protection realistic model described in the above-mentioned steps (1) is corresponding with subway OCC power system simulation figure, comprises AC side model and DC side model, and wherein, the AC side model comprises route protection model, ac bus protection model, tranformer protection model; The DC side model comprises catenary protection model, rectifier protection model, dc bus protection model, turnover line protection model, track protection model and automatic reclosing model.
The fault that teacher described in the above-mentioned steps (2) is provided with comprises fault and protection tripping fault and isolating switch tripping faults such as equipment component short circuit, broken string.
The present invention is used to train yardman's emergency operation technical ability to fault handling when scheduler task and fault take place at ordinary times.Because electric power supply system for subway to the importance of subway, keep the reliability of this electric power system, yardman's functipnal capability, and skill level is very important.But train for environment of yardman at the electric power supply system for subway of reality, because electric power supply system for subway is very important in the reality, operation that can not be careless.
The teacher can be provided with operation and the dispatch command that end is seen the student in fault among the present invention, can intervene in real time student's operation.Relay protection system in the reality mainly is after breaking down, and relay protection judges whether to excise fault element according to data measured amount (electric current, voltage etc.), and after the excision, other electric power system can normally be moved, and reduces power supply dead electricity scope.The present invention is the relay protection behavior of simulating reality, how the simulation relay protection moves, and how to select the relay protection type of action, how to select to jump which isolating switch.Be mainly reflected in: real relay protection system comprises a lot of protections, and like protections such as differential, zero sequence, distances, the action rule of these protections is all inequality; These protection simulations one by one; Be exactly the protection model of setting up, like the differential protection model, the distance protection model.When the student need handle the somewhere fault, promptly can select corresponding protection model to operate.
Like Fig. 2, be an electric power supply system for subway simple diagram, be the both end power supplying system; Be provided with in the both sides of bus protective device 1, protective device 2 ..., protective device 8; The electric substation 9 at two ends is a feeder ear, and protective device all should be provided with the power direction decision element, so when 10 places, trouble spot break down; Protective device 3, protective device 4 are its main protection, and protective device 1, protective device 7, protective device 6 are the back-up protection of main protection.According to above-mentioned rule, can set up hierarchical model, when fault takes place; Always there are near the protective devices the trouble spot 10 that it is constituted protection, and during this main protection tripping situation, adopt back-up protection far away that it is constituted the rule of protecting; Has well-bedded situation; So utilize this rule, adopt layering thought, set up layering protection model.
Like Fig. 3, the fault layer is trouble spot 10, and the ground floor protection is protective device 3, protective device 4; The second layer is protective device 1, protective device 6, protective device 7, and when 10 faults of trouble spot, program is communicated with situation according to circuit; Near along communication line detection range trouble spot 10 protective device; Few because of the situation of protecting two-layer all trippings, can consider, so search gets final product for three layers.After search finishes, set up layering protection model.According to this model, the beginning overall procedure is handled.
When overall process flow begins; Be introduced into the ground floor protective device, i.e. protective device among Fig. 33 and protective device 4, the main protection in the protective device constitutes protection to fault thus; If the main protection tripping then has the back-up protection in protective device 3, the protective device 4 that fault is constituted protection.If also tripping is protected in this reserve, program gets into the model second layer, i.e. the protective device 1 of Fig. 3, protective device 7 and protective device 6, and the back-up protection far away of protective device constitutes protection to fault thus.This model can be simulated the protection situation accurately, and can not constitute the device of protection to fault because of having given up other, and it is few to expend time in, and real-time is relatively good, is applicable to extensive subway electric power system.
The present invention is in the situation to concrete protection simulation; Adopt the hybrid simulation method; The emulation mode that promptly adopts logic determines method, definite value determining method to use with, and a principle has been proposed: can use the protection of logic determines method to use as far as possible, can not use the use definite value determining method of logic determines method.So both can guarantee the accuracy simulated also can reduce computing time, guarantee real-time.
Concrete protection model emulation adopts Object-Oriented Design thought, to class of each device setup, the fault of each type is sorted out, and when increasing equipment, increases a class and gets final product, and debugging is convenient.Employing is divided into equipment the method for DC side and AC side.DC side has: the contact net class, respectively emulation current changing rate (di/dt) take off a mouthful protection, definite time-lag overcurrent protection, under-voltage protection, the hot inverse time-lag protection of contact net, bilateral jumping, automatic reclosing with current increment (DI) protection, big electric current.Class of track, respectively emulation track superpotential, frame clsss protection etc.The rectifier class, respectively emulation overcurrent protection, overvoltage protection, overload protection etc.The tractive transformer class, respectively emulation time-delay overcurrent protection, current quick, longitudinal differential protection, superpotential guarantor, overexcitation protection, overload protection.AC side has: the circuit class, respectively emulation light longitudinal differential protection, zero-sequenceprotection, specified time overcurrent protection.The bus class, bus differential protection etc.The main-transformer class, respectively emulation protection, longitudinal differential protection, overexcitation protection, overload protection, overcurrent protection, zero-sequenceprotection etc.
In sum, just can realize the present invention preferably.
Claims (7)
1. relay protection simulation training system in the subway OCC power scheduling; It is characterized in that; Comprise the fault handling end that is used for student operation, the fault that is used for teacher's operation end is set, be used to receive and handle student and teacher's service data microprocessor, store the storer of subway OCC power system simulation figure program and store the database server of support microcontroller computing, fault handling end, fault are provided with end, storer and database server and all are connected to microprocessor.
2. relay protection simulation training system in the subway OCC according to claim 1 power scheduling is characterized in that, it all is common PC that said fault handling end and fault are provided with end.
3. relay protection simulation training system in the subway OCC according to claim 1 power scheduling is characterized in that, the data in the said database server comprise bug list, protection equipment list, protection type list, protection relation table and input/output relation table.
4. relay protection simulation training system in the subway OCC according to claim 1 power scheduling; It is characterized in that; Include AC side equipment and DC side equipment among the said subway OCC power system simulation figure, wherein AC side equipment comprises interchange 35KV bus, 35KV looped network inlet wire and outlet, prepared auto restart, isolating switch, disconnector, tractive transformer and step-down transformer; DC side equipment comprises rectifier, direct current 1500V bus, dc feeder, isolating switch, disconnector, contact net and track.
5. relay protection emulation training method in the subway OCC power scheduling is characterized in that, may further comprise the steps:
(1) with subway OCC power system simulation diagram data boot memory; Various support data, fault are provided with data and relay protection realistic model data importing database server, and microprocessor can be provided with subway OCC power system simulation figure on the end and the display of fault handling end in fault immediately and show;
When (2) teacher need be provided with fault in subway OCC electric system; Be that operating troubles is provided with end and sends a message to microprocessor; Microprocessor receives after fault is provided with the message of end, handles, and calls in the database server data then and calculates; Through subway OCC power system simulation figure program in the storer simulation drawing being carried out state changes; Immediately send to fault end and fault handling end are set, the normal position of simulation drawing is shown as blueness, redness or yellow, and abort situation promptly appears dimmed;
(3) student is after viewing fault on the display screen; Warning or signal according to simulation drawing shows send corresponding dispatch command, after service data sends to microprocessor; Microprocessor is handled data; Judge its correctness, represent then that correctly this student's dispatch command is correct, mistake is then represented this student's dispatch command mistake.
6. relay protection emulation training method in the subway OCC according to claim 5 power scheduling; It is characterized in that; The relay protection realistic model comprises AC side model and DC side model described in the step (1); Wherein, the AC side model comprises route protection model, ac bus protection model, tranformer protection model; The DC side model comprises catenary protection model, rectifier protection model, dc bus protection model, turnover line protection model, track protection model and automatic reclosing model.
7. relay protection emulation training method is characterized in that in the subway OCC according to claim 5 power scheduling, and the fault that teacher described in the step (2) is provided with comprises equipment component short circuit, disconnection fault and protection tripping fault and isolating switch tripping fault.
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| CN103035138B (en) * | 2012-06-21 | 2014-12-17 | 湖州电力局 | Personnel remote training device |
| CN103035138A (en) * | 2012-06-21 | 2013-04-10 | 湖州电力局 | Personnel remote training device |
| CN103065512A (en) * | 2012-12-28 | 2013-04-24 | 成都运达科技股份有限公司 | Metro operation cooperation center (OCC) power dispatching simulating training system |
| CN103177642A (en) * | 2013-03-26 | 2013-06-26 | 广东电网公司佛山供电局 | Method for improving reality of power grid dispatcher training simulation system |
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| CN104700686A (en) * | 2013-12-09 | 2015-06-10 | 上海仪电信息网络有限公司 | Real-object simulated maintenance training system for domestic electronic products |
| CN106297504A (en) * | 2015-05-14 | 2017-01-04 | 中国人民解放军理工大学 | Engineer equipment automatically controlled simulated teaching examination training system |
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| CN105788392A (en) * | 2016-04-07 | 2016-07-20 | 国网浙江省电力公司台州供电公司 | Training apparatus for electric power system |
| CN109887368A (en) * | 2019-04-11 | 2019-06-14 | 威立雅（哈尔滨）热电有限公司 | Medium Voltage Switchgear secondary control loop simulation training platform and its programmable logic controller (PLC) logic judging method |
| CN109887368B (en) * | 2019-04-11 | 2024-04-19 | 威立雅（哈尔滨）热电有限公司 | Medium-voltage switch cabinet simulation training platform and logic judgment method of programmable logic controller of medium-voltage switch cabinet simulation training platform |
| CN110909444A (en) * | 2019-10-15 | 2020-03-24 | 北京交通大学 | High-speed rail traction power supply scheduling simulation training system |
| CN110909444B (en) * | 2019-10-15 | 2021-06-25 | 北京交通大学 | High-speed rail traction power supply scheduling simulation training system |
| CN110930785A (en) * | 2019-11-20 | 2020-03-27 | 南京铁道职业技术学院 | Fault simulation system and method for subway power transformation device |
| CN111553079A (en) * | 2020-04-29 | 2020-08-18 | 武汉船舶职业技术学院 | Three-dimensional power grid training simulation method based on virtual reality technology |
| CN111553079B (en) * | 2020-04-29 | 2023-06-09 | 武汉船舶职业技术学院 | Three-dimensional power grid training simulation method based on virtual reality technology |
| CN112419847A (en) * | 2020-11-12 | 2021-02-26 | 广东电网有限责任公司 | Dynamic display method and display system of current limiter |
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