CN105093158A - Method based on RTDS scripts to realize closed-loop tests on undercurrent grounding line selection devices - Google Patents
Method based on RTDS scripts to realize closed-loop tests on undercurrent grounding line selection devices Download PDFInfo
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- CN105093158A CN105093158A CN201510577693.5A CN201510577693A CN105093158A CN 105093158 A CN105093158 A CN 105093158A CN 201510577693 A CN201510577693 A CN 201510577693A CN 105093158 A CN105093158 A CN 105093158A
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Abstract
The invention discloses a method based on RTDS scripts to realize closed-loop tests on undercurrent grounding line selection devices. According to the test method, a test platform mainly comprises a computer, an RTDS cabinet, a multi-path power amplifier and an undercurrent grounding line selection device; through voltage current signals generated by a typical simulation model established on the basis of actual parameters by an RSCAD simulation software, line selection tests on the undercurrent grounding line selection devices are carried out, the test results are fed back to the simulation mode to form a closed-loop test system, the whole system automatically operates under the control of the script program, and the line selection results of the line selection devices, result waveforms and COMTRADE files are filly stored in a designated directory. Through the method, automatic and comprehensive tests on the undercurrent grounding line selection devices can be realized, line selection accuracy situation and line selection output result files can be stored in real time, fault line selection accuracy of power distribution networks of electric power systems and operation safety and stability of the electrical networks are improved.
Description
Technical field
The present invention relates to a kind of method of Small Electric Current Earthing And Routing Device being carried out to closed loop test, particularly relate to a kind of method based on RTDS script closed loop test Small Electric Current Earthing And Routing Device.
Background technology
RTDS: full name is real-time digital simulator (RealTimeDigitalSimulator), being developed by Canadian Manitoba RTDS company and manufacture, is that a kind of specialized designs is for studying the device of Transient Electromagnetic Phenomena in electric system.RTDS script (RTDSScriptLanguage): RTDS script is in the RUNTIME of RSCAD simulation software, pass through compile script, the automatic start-stop that user can realize emulating, the refreshing of oscillogram and the preservation of data, also can change the setting of control element, and different situations can be combined.
China 666KV power distribution network majority is small current neutral grounding mode, and small current neutral grounding system makes distribution net work structure complicated, and failure line selection and location become a generally acknowledged difficult problem.Along with conventional electric power net is to the transformation of intelligent grid, quickly and reliably detection and positioning is very important to realize the fault needed for self-healing function of intelligent grid.The probability of small current neutral grounding system generation singlephase earth fault is more than 80%, and fault there will be a variety of different situations, the time that the size of fault resistance, fault continue, the phase place of fault generation, the type of fault, all may cause the deviation that line selection apparatus is selected, these are all the important evidence as passing judgment on line selection apparatus.In actual field, the situation after fault occurs is random, just will there will be the combination of different situations, and the various different situations of fault is mutual, there will be large-scale data, is manually difficult to operation and realizes.
Small Electric Current Earthing And Routing Device is the proterctive equipment that a kind of power industry uses; this equipment is applicable to 3KV-66KV isolated neutral or the neutral point single-phase grounding selecting through resistance, arc suppression coil earthing system; for the electric power system of the large-scale industrial enterprise such as the transformer station of electric system, generating plant, power station and chemical industry, oil recovery, metallurgy, coal, railway, the circuit that singlephase earth fault occurs can be indicated.
Line selection apparatus can export the circuit number of selection, but line selection apparatus self often can not judge the correctness of route selection, and route selection result and wave file can not be preserved.According to the different situations compile script that above-mentioned fault occurs, realize the mutual of fault different situations.The test of line selection apparatus is realized by Run Script, convenient and efficient.
At present, most of Small Electric Current Earthing And Routing Device is that the zero-sequence current feature produced when utilizing system single-phase earth fault carries out route selection.Under different fault conditions, the route selection level performance of Small Electric Current Earthing And Routing Device differs.But go back the complete appraisement system of neither one and method at present for Small Electric Current Earthing And Routing Device, therefore, need one to carry out line selection apparatus according to different faults condition and automatically detect and the method that test findings is preserved in real time.
Summary of the invention
The object of the invention is to for above-mentioned defect of the prior art, a kind of method based on RTDS script closed loop test Small Electric Current Earthing And Routing Device is provided, the method can realize occurring the extensive mutual of different situations when breaking down, full test is carried out to line selection apparatus, and by result and the real-time keeping records of test file.
For achieving the above object, present invention employs following technical scheme: a kind of method based on RTDS script closed loop test Small Electric Current Earthing And Routing Device, the test platform of described method of testing forms primarily of computing machine, RTDS cabinet-type air conditioner, multiplex power amplifier and Small Electric Current Earthing And Routing Device, be provided with RSCAD simulation software in computing machine, RTDS cabinet-type air conditioner has GPC/PB5 plate port and GTFPI plate port; Described method of testing comprises the steps: step one, computing machine is connected with RTDS cabinet-type air conditioner, the GPC/PB5 plate port of RTDS cabinet-type air conditioner is connected with many power amplifier input mouth, many power amplifier output port are connected with Small Electric Current Earthing And Routing Device input port, and the GTFPI plate port of RTDS cabinet-type air conditioner is connected with Small Electric Current Earthing And Routing Device output port; Step 2, moving calculation machine, RTDS cabinet-type air conditioner, multiplex power amplifier and Small Electric Current Earthing And Routing Device, run RSCAD simulation software, build realistic model, and according to different failure conditions, list test inventory according to on-the-spot actual parameter; Step 3, arranges transformable parameter to emulate failure conditions different in inventory, also will build the logical circuit of input/output module and feedback signal simultaneously, for the connection of closed loop and the observation of result in the above-mentioned realistic model built up; Step 4, RTDS cabinet-type air conditioner produces corresponding voltage, current signal according to failure condition, and flow to power amplifier by GPC/PB5 plate port, power amplifier accepts amplifies it after voltage, current signal, then amplifying signal is flowed to Small Electric Current Earthing And Routing Device, Small Electric Current Earthing And Routing Device generates feedback signal according to the voltage after amplification, current signal, and by the GTFPI plate port of feedback signal back to RTDS cabinet-type air conditioner; Step 5, in the RUNTIME of RSCAD, build slide block, button and switch, simulation waveform figure, feedback signal pilot lamp also represents on the surface; Step 6, script-editor is opened at RUNTIME interface, writes test code according to pilot project inventory; Step 7, performs the script file of above-mentioned generation, completes test, the route selection situation of line selection apparatus in automatic test different faults situation, by the pilot lamp observation route selection result at RUNTIME interface, can automatically outcome record be preserved, as the foundation of follow-up judge line selection apparatus.
In addition, the present invention also provides following attached technical scheme:
Described failure condition comprises fault stability, fault ground resistance, abort situation, distribution three-phase current unbalance degree, line harmonic rate, fault generation moment and trouble duration; Fault stability comprises: quiet earth, arc grounding; Fault ground resistance comprises: metallic earthing fault, high resistance earthing fault; Abort situation comprises: end, cable middle-end end, pole line cable mixing middle-end in pole line; The fault generation moment comprises: 30 °, 60 °, 75 °, 90 °; Trouble duration comprises: 1s, 5s, 10s; Three-phase current unbalance degree and line harmonic rate are as failure and special.
Described RTDS cabinet-type air conditioner GPC/PB5 plate port is analog output, completes the transmission of simulating signal; The port that the GTFPI plate of RTDS cabinet-type air conditioner provides can receive digital quantity signal, completes external digital signal and receives; Described power amplifier is multichannel pmultiple amplifier, can select many circuits; Described Small Electric Current Earthing And Routing Device has analog input port, digital output port
Compared to prior art, advantage of the present invention is: the present invention can carry out automatically and comprehensively testing to Small Electric Current Earthing And Routing Device, can preserve in real time the destination file that situation and the route selection of route selection correctness export, power supply enterprise can utilize the above-mentioned information provided select line selection apparatus and evaluate, and improves the accuracy of system for distribution network of power failure line selection and the security and stability of operation of power networks.
Accompanying drawing explanation
Fig. 1 is the model calling figure of test macro of the present invention.
Fig. 2 is the logical diagram of the logical circuit process of feedback signal through building.
Fig. 3 is the process flow diagram of shell script.
Embodiment
Below in conjunction with preferred embodiment and accompanying drawing thereof, technical solution of the present invention is further non-limitingly described in detail.
The invention provides a kind of method based on RTDS script closed loop test Small Electric Current Earthing And Routing Device, the method is carried out on Small Electric Current Earthing And Routing Device closed loop test platform, with reference to Fig. 1, closed loop test platform forms primarily of computing machine 1, RTDS cabinet-type air conditioner 2, multiplex power amplifier 3 and Small Electric Current Earthing And Routing Device 4, RSCAD simulation software is installed in computing machine 1, utilizes the script function of RSCAD simulation software to realize the large scale test of different faults situation combination.
Particularly, it is the exemplary simulation model of foundation that this closed loop test platform is built by RSCAD simulation software with actual parameter, produces the voltage and current signal being equivalent to system for distribution network of power physical fault.The port that the signal output of RTDS cabinet-type air conditioner 2 adopts PB5 plate to provide, PB5 processor is the up-to-date processor card of RTDS exploitation, comprise the digital-to-analog converter of 12, output voltage range is +/-10V, every block PB card has eight optical ports, can be used alternatingly the direct communication be connected between high-resolution analog-and digital-I/O card or PB5/GPC transaction card.The port that the signal input of RTDS cabinet-type air conditioner adopts GTFPI plate to provide, GTFPI is that digital I/O panel provides interface, and it can receive external digital amount signal.Multiplex power amplifier 3 is multichannel pmultiple amplifier, can select many circuits.Small Electric Current Earthing And Routing Device 4 has analog input port, and digital output port.Port on RTDS cabinet-type air conditioner 2 is all through the port tested and have compared with low distortion, and signal waveform and the actual comparison of wave shape of finally exporting to line selection device for low current 4 are basically identical, make there is high accuracy rate to line selection apparatus test result.
Again shown in composition graphs 2 and Fig. 3, the method based on RTDS script closed loop test Small Electric Current Earthing And Routing Device of the present invention is roughly:
Step one, computing machine 1 is connected with RTDS cabinet-type air conditioner 2, the GPC/PB5 plate port of RTDS cabinet-type air conditioner 2 is connected with the input port of many power amplifiers 3, the GTFPI plate port of RTDS cabinet-type air conditioner 2 is connected with the output port of Small Electric Current Earthing And Routing Device 4, and many power amplifier 3 output ports are connected with the input port of Small Electric Current Earthing And Routing Device 4.
Step 2, moving calculation machine 1, RTDS cabinet-type air conditioner 2, multiplex power amplifier 3 and Small Electric Current Earthing And Routing Device 4, run RSCAD simulation software, build realistic model, and according to different failure conditions, list test inventory according to on-the-spot actual parameter.Model data adopts the True Data of actual transformer station, has pure pole line, pure cable, and many circuits that are built on stilts and cable mixing form, and have the simulated effect of high value, the route selection situation obtained is also the truest.
Step 3, arranges transformable parameter to emulate failure conditions different in inventory, also will build the logical circuit of input/output module and feedback signal simultaneously, for the connection of closed loop and the observation of result in the above-mentioned realistic model built up.Failure condition comprises fault stability, fault ground resistance, abort situation, distribution three-phase current unbalance degree, line harmonic rate, fault generation moment and trouble duration; Wherein, fault stability comprises: quiet earth, arc grounding; Fault ground resistance comprises: metallic earthing fault, high resistance earthing fault; Abort situation comprises: end, cable middle-end end, pole line cable mixing middle-end in pole line; The fault generation moment comprises: 30 °, 60 °, 75 °, 90 °; Trouble duration comprises: 1s, 5s, 10s.Three-phase current unbalance degree and line harmonic rate are as failure and special.
Step 4, RTDS cabinet-type air conditioner 2 produces corresponding voltage, current signal according to failure condition, and flow to power amplifier 3 by GPC/PB5 plate port, power amplifier 3 amplifies it after receiving voltage, current signal, then amplifying signal is flowed to Small Electric Current Earthing And Routing Device 4, Small Electric Current Earthing And Routing Device 4 generates feedback signal according to the voltage after amplification, current signal, and by the GTFPI plate port of feedback signal back to RTDS cabinet-type air conditioner 2;
Step 5, in the RUNTIME of RSCAD, build slide block, button and switch, simulation waveform figure, feedback signal pilot lamp also represents on the surface.The pilot lamp of all buttons, switch, slide block, oscillogram, route selection feedback signal all represents at simulation run interface, can observe the situation that route selection is carried out and the condition now broken down at any time, and the situation of route selection correctness also can real-time monitored.
Step 6, script-editor is opened at RUNTIME interface, writes test code according to pilot project inventory.Script has can be revised, can control, the performance that can export in real time, can according to the condition of the demand change test of different manufacturers, the process of route selection can be interrupted at any time to observe the result of route selection, also can must obtain the destination file of route selection output in real time for analyzing and pass judgment on the performance of line selection apparatus.
Step 7, performs the script file of above-mentioned generation, completes test, the route selection situation of line selection apparatus in automatic test different faults situation, by the pilot lamp observation route selection result at RUNTIME interface, can automatically outcome record be preserved, as the foundation of follow-up judge line selection apparatus.
In sum, the present invention can carry out automatically and comprehensively testing to Small Electric Current Earthing And Routing Device, can preserve in real time the destination file that situation and the route selection of route selection correctness export, power supply enterprise can utilize the above-mentioned information provided select line selection apparatus and evaluate, and improves the accuracy of system for distribution network of power failure line selection and the security and stability of operation of power networks.
It is pointed out that above-mentioned preferred embodiment is only and technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (3)
1. the method based on RTDS script closed loop test Small Electric Current Earthing And Routing Device, it is characterized in that, the test platform of described method of testing forms primarily of computing machine, RTDS cabinet-type air conditioner, multiplex power amplifier and Small Electric Current Earthing And Routing Device, be provided with RSCAD simulation software in computing machine, RTDS cabinet-type air conditioner has GPC/PB5 plate port and GTFPI plate port;
Described method of testing comprises the steps:
Step one, computing machine is connected with RTDS cabinet-type air conditioner, the GPC/PB5 plate port of RTDS cabinet-type air conditioner is connected with multiplex power amplifier input port, multiplex power amplifier output port is connected with Small Electric Current Earthing And Routing Device input port, and the GTFPI plate port of RTDS cabinet-type air conditioner is connected with Small Electric Current Earthing And Routing Device output port;
Step 2, moving calculation machine, RTDS cabinet-type air conditioner, multiplex power amplifier and Small Electric Current Earthing And Routing Device, run RSCAD simulation software, build realistic model, and according to different failure conditions, list test inventory according to on-the-spot actual parameter;
Step 3, arranges transformable parameter to emulate failure conditions different in inventory, also will build the logical circuit of input/output module and feedback signal simultaneously, for the connection of closed loop and the observation of result in the above-mentioned realistic model built up;
Step 4, RTDS cabinet-type air conditioner produces corresponding voltage, current signal according to failure condition, and flow to power amplifier by GPC/PB5 plate port, power amplifier accepts amplifies it after voltage, current signal, then amplifying signal is flowed to Small Electric Current Earthing And Routing Device, Small Electric Current Earthing And Routing Device generates feedback signal according to the voltage after amplification, current signal, and by the GTFPI plate port of feedback signal back to RTDS cabinet-type air conditioner;
Step 5, in the RUNTIME of RSCAD, build slide block, button and switch, simulation waveform figure, feedback signal pilot lamp also represents on the surface;
Step 6, script-editor is opened at RUNTIME interface, writes test code according to pilot project inventory;
Step 7, performs the script file of above-mentioned generation, completes test, the route selection situation of line selection apparatus in automatic test different faults situation, by the pilot lamp observation route selection result at RUNTIME interface, can automatically outcome record be preserved, as the foundation of follow-up judge line selection apparatus.
2. the method based on RTDS script closed loop test Small Electric Current Earthing And Routing Device according to claim 1, it is characterized in that, described failure condition comprises fault stability, fault ground resistance, abort situation, distribution three-phase current unbalance degree, line harmonic rate, fault generation moment and trouble duration;
Fault stability comprises: quiet earth, arc grounding;
Fault ground resistance comprises: metallic earthing fault, high resistance earthing fault;
Abort situation comprises: end, cable middle-end end, pole line cable mixing middle-end in pole line;
The fault generation moment comprises: 30 °, 60 °, 75 °, 90 °;
Trouble duration comprises: 1s, 5s, 10s;
Three-phase current unbalance degree and line harmonic rate are as failure and special.
3. the method based on RTDS script closed loop test Small Electric Current Earthing And Routing Device according to claim 1, is characterized in that, described RTDS cabinet-type air conditioner GPC/PB5 plate port is analog output, completes the transmission of simulating signal;
The port that the GTFPI plate of RTDS cabinet-type air conditioner provides can receive digital quantity signal, completes external digital signal and receives;
Described power amplifier is multichannel pmultiple amplifier, can select many circuits;
Described Small Electric Current Earthing And Routing Device has analog input port, digital output port.
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| CN107783070A (en) * | 2017-10-19 | 2018-03-09 | 广西电网有限责任公司电力科学研究院 | Small Electric Current Earthing And Routing Device round cut function automatic detection method |
| CN109541964A (en) * | 2018-12-27 | 2019-03-29 | 南瑞集团有限公司 | A kind of sampling platform based on stabilized control system RTDS test |
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