CN202471887U - Injection type small current grounding line selection device RTDS closed loop test platform - Google Patents
Injection type small current grounding line selection device RTDS closed loop test platform Download PDFInfo
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- CN202471887U CN202471887U CN2012200062790U CN201220006279U CN202471887U CN 202471887 U CN202471887 U CN 202471887U CN 2012200062790 U CN2012200062790 U CN 2012200062790U CN 201220006279 U CN201220006279 U CN 201220006279U CN 202471887 U CN202471887 U CN 202471887U
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Abstract
The present utility model discloses an injection type small current grounding line selection device RTDS closed ring test platform scheme. The scheme comprises an RTDS real-time digital simulation system, a multipath voltage, a current power amplifier, an injection type small current grounding line selection device and a relay which are serially connected in a closed loop way, thus a real-time digital emulation and simulation injection type line selection device line selection function closed ring test platform is formed. In the RTDS, a small current grounding power distribution network system is established, a single-phase fault type is arranged, and relevant real-time electric information of a power distribution network can be obtained through operation; signals can be amplified into power distribution network primary values or transformer station secondary signal values through the multipath voltage and the current power amplifier; the injection type small current grounding single-phase fault line selection device is connected with the electric signals and used for automatically generating access middle resistance control signals for the relay, the relay is used for sending the control signals back to the real-time digital simulation instrument RTDS to form a closed ring loop, and a platform for realizing function tests of the injection type line selection device can be formed. In the platform, detection tests of line selection functions of the injection type line selection device under different electrical network structure and different fault situations can be realized.
Description
Technical field
A kind of pouring-in Small Electric Current Earthing And Routing Device RTDS closed test platform of the utility model belongs to the innovative technology of pouring-in little current single-phase grounding device RTDS real-time digital closed test.
Background technology
The used principle of small electric current grounding system of distribution network single-phase fault line selection apparatus generally can be divided into steady-state signal analytic approach, transient signal analytic approach and inject signalling.Wherein, the line selection apparatus that adopt to inject signalling relates to installs and inserts primary equipment, is a difficult problem to the l-G simulation test of route selection accuracy always, brings bigger difficulty when selecting this series products to power supply enterprise.Therefore study pouring-in little current single-phase grounding device RTDS real-time digital closed-loop simulation method and test platform has crucial meaning.
The neutral point of power distribution network can be for earth-free, the big resistance eutral grounding of warp, through arc suppression coil compensation ground connection, i.e. small current neutral grounding system.After if singlephase earth fault takes place, need in time faulty line to be confirmed, mainly accomplish the route selection function by line selection apparatus.At present, to adopting the line selection apparatus of steady-state signal analytic approach and transient signal analytic approach, existing corresponding analog simulation measuring technology mainly is that the analog testing platform that utilizes the multiple AC source generator perhaps to build based on RTDS carries out.Wherein utilize the test of multiple AC source generator can't simulate the single-phase fault signal process of actual small current neutral grounding system electrical network, thereby can not test the route selection function of line selection apparatus under different electric web frame, different faults situation fully.
Main one type of mode that is employed in neutral point resistance in fault moment inserts in the pouring-in little current single-phase grounding device; Present test for pouring-in little current single-phase grounding device; Generally have only site test or dynamic simulation test, also do not have effective simulation method.
RTDS is Canadian Manitoba direct current research centre exploitation, the most ripe power system real-time simulation system in the world, is a kind of reliable, effective real-time simulation experimental apparatus.
The utility model content
The purpose of the utility model is: a kind of pouring-in Small Electric Current Earthing And Routing Device RTDS closed test platform is provided; Satisfy the functional verification of pouring-in little electric current single-phase fault line selection apparatus, be implemented in the test and validation to injection type route selecting device route selection function under different electric web frame, different faults situation of small current neutral grounding system electrical network.
The technical scheme that the utility model solves the problems of the technologies described above is:
A kind of pouring-in Small Electric Current Earthing And Routing Device RTDS closed test platform, it is made up of RTDS (Real Time Digital System) real-timedigital simulation system, six road voltages/six road current power amplifiers, pouring-in Small Electric Current Earthing And Routing Device and relay.RTDS is the real-timedigital simulation system, and it is a kind of real-timedigital simulation system that manufacturer produces, and in the RTDS of real-timedigital simulation system, is provided with port I, port II and port III; Six road voltages/six road current power amplifiers are provided with port I, port II, port III and port IV; Pouring-in small current grounding system single-phase grounding selecting device is that device being tested is the equipment with small current grounding system single-phase grounding selecting function that manufacturer forms according to the former reason hardware and software of route selection, and it is provided with port I, port II and port III; Relay is provided with port I and port II.Each parts annexation is following:
1.RTDS the port I of real-timedigital simulation system is connected with port II with the port I of six road voltages/six road current power amplifiers respectively with port II.
2. the port III of six road voltages/six road current power amplifiers is connected with port II with the port I of tested pouring-in small current grounding system single-phase grounding selecting device respectively with the port IV.
3. the port III of tested pouring-in small current grounding system single-phase grounding selecting device and the port I of relay are connected.
4. the port II of relay is connected with the port III of the RTDS of real-timedigital simulation system.
The utility model has the advantages that:
The pouring-in Small Electric Current Earthing And Routing Device RTDS closed test platform that the utility model proposes; By existing real-timedigital simulation system; Utilize its open input, output function, with actual power distribution network model, the running environment of promptly pouring-in small current grounding system single-phase grounding selecting device is based upon on the RTDS; The middle resistance that again the line selection apparatus controller is sent injects signal and exports to RTDS through the empty node of relay, forms a cover real-time closed-loop hybrid simulation system.Lack effective analog simulation means of testing for pouring-in low-current ground fault line selection technology with device always; There is the phenomenon that can not accurately hold products characteristics in power supply enterprise when product is selected the injection type route selecting product, the lectotype selection that is established as pouring-in little electric current selecting arrangement design department's technical research and run unit of this test platform provides technical basis and verification method.
Description of drawings
Fig. 1 is the structural representation of a kind of pouring-in Small Electric Current Earthing And Routing Device RTDS closed test platform of the utility model.
Among the figure: the RTDS of real-timedigital simulation system 1, six road voltages/six road current power amplifiers 2, pouring-in small current grounding system single-phase grounding selecting adorns 3, relay 4.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
The utility model structure is as shown in Figure 1, and among the figure: the RTDS of real-timedigital simulation system 1, six road voltages/six road current power amplifiers 2, pouring-in small current grounding system single-phase grounding selecting adorns 3, relay 4.The RTDS of real-timedigital simulation system 1 is provided with port I, port II and port III; Six road voltages/six road current power amplifiers 2 are provided with port I, port II, port III and port IV; Pouring-in small current grounding system single-phase grounding selecting is adorned 3 and is provided with port I, port II and port III; Relay is provided with port I and port II.
Each parts annexation is following:
1.RTDS the port I of real-timedigital simulation system 1 is connected with port II with the port I of six road voltages/six road current power amplifiers 2 respectively with port II.
2. the port III of six road voltages/six road current power amplifiers 2 is connected with port II with the port I of tested pouring-in small current grounding system single-phase grounding selecting device 3 respectively with the port IV.
3. the port III of tested pouring-in small current grounding system single-phase grounding selecting device 3 is connected with the port I of relay 4.
4. the port II of relay 4 is connected with the port III of the RTDS of real-timedigital simulation system 1.
Method of application of the utility model and principle of work are:
In RTDS, set up actual power distribution network model, the different faults type is set, compile emulation, the voltage/current signals of selected grid nodes, the small voltage signal that output forms after the digital-to-analog conversion is given six road voltages/six road current power amplifiers; Power amplifier will be that the small signal of the voltage and the magnitude of current is enlarged into power distribution network circuit one sub-value or substation secondary value from the simulating signal of RTDS output; To export to pouring-in small current grounding system single-phase grounding selecting device through the voltage/current signals that power amplifier amplifies again; The injection type route selecting device is according to the simulation actual track that receives and the signal of transformer station; The middle resistance control signal that output distribution net neutral point inserts is given relay; Export to the RTDS front panel through the empty node of relay; The control signal that resistance inserts in the RTDS basis drops into or withdraws from the middle resistance that the injection type route selecting device is set in realistic model.
The different faults condition that the utility model can possibly occur according to the scene is carried out closed test over and over again, overcomes the limited influence of site test condition.Through the test under the various faults condition, with the route selection function of the pouring-in small current grounding system single-phase grounding selecting device of complete detection.
Its position and annexation are:
The real-time distribution network failure voltage/current signals of the RTDS of real-timedigital simulation system 1 output simulation is given six road voltages/six road current power amplifiers 2; Power amplifier is exported to tested pouring-in small current grounding system single-phase grounding selecting device 3 with the small-signal amplification of RTDS; The injection type route selecting device is exported to relay 4 with control signal; Relay is failed back this control signal again and is given the RTDS of real-timedigital simulation system 1, forms closed loop and connects.
The port I of the RTDS of real-timedigital simulation system 1 is connected with port II with the port I of six road voltages/six road current power amplifiers 2 respectively with port II.
The port III of six road voltages/six road current power amplifiers 2 is connected with port II with the port I of tested pouring-in small current grounding system single-phase grounding selecting device 3 respectively with the port IV.
The port III of tested pouring-in small current grounding system single-phase grounding selecting device and the port I of relay are connected, and the port II of relay is connected with the port III of the RTDS of real-timedigital simulation system.
Claims (1)
1. pouring-in Small Electric Current Earthing And Routing Device RTDS closed test platform, it is characterized in that: it is made up of RTDS real-timedigital simulation system, six road voltages/six road current power amplifiers, pouring-in Small Electric Current Earthing And Routing Device and relay; RTDS is provided with port I, port II and port III; Six road voltages/six road current power amplifiers are provided with port I, port II, port III and port IV; Pouring-in small current grounding system single-phase grounding selecting device is that device being tested is provided with port I, port II and port III; Relay is provided with port I and port II; Each parts annexation is following:
1) the port I of RTDS real-timedigital simulation system is connected with port II with the port I of six road voltages/six road current power amplifiers respectively with port II;
2) the port III of six road voltages/six road current power amplifiers is connected with port II with the port I of tested pouring-in small current grounding system single-phase grounding selecting device respectively with the port IV;
3) the port I of the port III of tested pouring-in small current grounding system single-phase grounding selecting device and relay is connected;
4) the port II of relay is connected with the port III of the RTDS of real-timedigital simulation system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200062790U CN202471887U (en) | 2012-01-09 | 2012-01-09 | Injection type small current grounding line selection device RTDS closed loop test platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200062790U CN202471887U (en) | 2012-01-09 | 2012-01-09 | Injection type small current grounding line selection device RTDS closed loop test platform |
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| Publication Number | Publication Date |
|---|---|
| CN202471887U true CN202471887U (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200062790U Expired - Fee Related CN202471887U (en) | 2012-01-09 | 2012-01-09 | Injection type small current grounding line selection device RTDS closed loop test platform |
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| CN (1) | CN202471887U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103472425A (en) * | 2013-09-17 | 2013-12-25 | 国家电网公司 | Method for applying low-current line selection device performance testing platform |
| CN104793101A (en) * | 2015-02-03 | 2015-07-22 | 广西电网有限责任公司电力科学研究院 | Transient travelling wave small-current grounding line selection device and test method thereof |
| CN104898020A (en) * | 2015-05-22 | 2015-09-09 | 广西电网有限责任公司电力科学研究院 | Method for detecting small disturbance analysis line selection apparatus based on RTDS |
| CN105093158A (en) * | 2015-09-11 | 2015-11-25 | 广西大学 | Method based on RTDS scripts to realize closed-loop tests on undercurrent grounding line selection devices |
| CN105116360A (en) * | 2015-10-14 | 2015-12-02 | 国家电网公司 | ADPSS (advanced digital power system simulator) based test system for low current grounding line selector and test method of system |
| CN105158716A (en) * | 2015-09-11 | 2015-12-16 | 广西大学 | Undercurrent line selection test system and method based on PSCAD closed loop technology |
| CN108169610A (en) * | 2017-11-29 | 2018-06-15 | 国电南瑞科技股份有限公司 | A kind of one-phase earthing failure in electric distribution network test method based on Real Time Digital Simulator |
| CN108241105A (en) * | 2017-12-08 | 2018-07-03 | 南瑞集团有限公司 | A kind of test method of the arc grounding line selection apparatus based on RTDS |
| CN108983137A (en) * | 2018-07-23 | 2018-12-11 | 济南置真电气有限公司 | A kind of system and method for detection single-phase earth fault line selection tripping round cut reliability |
-
2012
- 2012-01-09 CN CN2012200062790U patent/CN202471887U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103472425A (en) * | 2013-09-17 | 2013-12-25 | 国家电网公司 | Method for applying low-current line selection device performance testing platform |
| CN103472425B (en) * | 2013-09-17 | 2015-11-11 | 国家电网公司 | A kind of application process of line selection device for low current performance testing platform |
| CN104793101A (en) * | 2015-02-03 | 2015-07-22 | 广西电网有限责任公司电力科学研究院 | Transient travelling wave small-current grounding line selection device and test method thereof |
| CN104793101B (en) * | 2015-02-03 | 2017-10-24 | 广西电网有限责任公司电力科学研究院 | A kind of transient state travelling wave Small Electric Current Earthing And Routing Device |
| CN104898020A (en) * | 2015-05-22 | 2015-09-09 | 广西电网有限责任公司电力科学研究院 | Method for detecting small disturbance analysis line selection apparatus based on RTDS |
| CN105093158A (en) * | 2015-09-11 | 2015-11-25 | 广西大学 | Method based on RTDS scripts to realize closed-loop tests on undercurrent grounding line selection devices |
| CN105158716A (en) * | 2015-09-11 | 2015-12-16 | 广西大学 | Undercurrent line selection test system and method based on PSCAD closed loop technology |
| CN105158716B (en) * | 2015-09-11 | 2018-12-11 | 广西大学 | Small current line selection test method based on PSCAD technology of closed loop |
| CN105116360A (en) * | 2015-10-14 | 2015-12-02 | 国家电网公司 | ADPSS (advanced digital power system simulator) based test system for low current grounding line selector and test method of system |
| CN108169610A (en) * | 2017-11-29 | 2018-06-15 | 国电南瑞科技股份有限公司 | A kind of one-phase earthing failure in electric distribution network test method based on Real Time Digital Simulator |
| CN108241105A (en) * | 2017-12-08 | 2018-07-03 | 南瑞集团有限公司 | A kind of test method of the arc grounding line selection apparatus based on RTDS |
| CN108983137A (en) * | 2018-07-23 | 2018-12-11 | 济南置真电气有限公司 | A kind of system and method for detection single-phase earth fault line selection tripping round cut reliability |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20190109 |
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| CF01 | Termination of patent right due to non-payment of annual fee |