CN202256644U - Line-selection functional test platform of single-phase ground fault line-selection device of small-current grounding system - Google Patents
Line-selection functional test platform of single-phase ground fault line-selection device of small-current grounding system Download PDFInfo
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- CN202256644U CN202256644U CN2011203435755U CN201120343575U CN202256644U CN 202256644 U CN202256644 U CN 202256644U CN 2011203435755 U CN2011203435755 U CN 2011203435755U CN 201120343575 U CN201120343575 U CN 201120343575U CN 202256644 U CN202256644 U CN 202256644U
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Abstract
The utility model discloses a line-selection functional test platform of a single-phase ground fault line-selection device of a small-current grounding system, which consists of a real-time digital simulator (RTDS), a four-way voltage/ six-way current power amplifier and three units of the single-phase ground fault line-selection device of the small-current grounding system which are connected in series. By means of an existing real-time digital simulation system, the line-selection functional test platform of the single-phase ground fault line-selection device of the small-current grounding system utilizes the open-ended input and output functions of the existing real-time digital simulation system, and enables an actual distribution network model, namely, the operational environment of the single-phase ground fault line-selection device of the small-current grounding system, to be established on the RTDS so as to form a real-time hybrid simulation system. The establishment of the test platform provides technical base and proof techniques for technical research of small-current selection devices of design departments and equipment section of operating units, is capable of having functional tests for a plurality of line-selection devices of an identical type or having functional tests simultaneously for line-selection devices of different types and principles.
Description
Technical field
The utility model belongs to the electric system proving installation, specifically is a kind of platform of route selection functional test of single-phase grounded malfunction in grounded system of low current line selection apparatus.
Background technology
Domestic a large amount of Small Electric Current Earthing And Routing Device, there are very large difference in the detection principle of employing, function design, version, and performance characteristics is also very different, selects suitable product to bring bigger difficulty to power supply enterprise.Therefore study Small Electric Current Earthing And Routing Device route selection function verification 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; Checking to the line selection apparatus function mainly utilizes the multiple AC source generator to carry out; The single-phase fault signal process of actual small current neutral grounding system electrical network can't be simulated, thereby the route selection function of line selection apparatus under different electric web frame, different faults situation can not be tested fully.
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 provides a kind of route selection functional test platform of single-phase grounded malfunction in grounded system of low current line selection apparatus; Satisfy the functional verification of little electric current single-phase fault line selection apparatus, be implemented in the test and validation of the route selection function of small current neutral grounding system electrical network under different electric web frame, different faults situation.
The technical scheme that the utility model solves the problems of the technologies described above is:
A kind of route selection functional test platform of single-phase grounded malfunction in grounded system of low current line selection apparatus is made up of these three unit of the RTDS of real-timedigital simulation system (Real Time Digital System), four road voltages/six road current power amplifiers and small current grounding system single-phase grounding selecting device.It is a kind of real-timedigital simulation system that manufacturer produces for the said real-timedigital simulation RTDS of system, in the RTDS of real-timedigital simulation system, is provided with port I and port II; Said four road voltages/six road current power amplifiers are provided with port I, port II, port III and port IV; Said small current grounding system single-phase grounding selecting device is a device being tested, and it 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, is provided with voltage port I and electric current port II.The annexation of each unit is following:
1. the port I of the RTDS of real-timedigital simulation system is connected with port II with the port I of four road voltages/six road current power amplifiers respectively with port II.
2. when being provided with 1 Small Electric Current Earthing And Routing Device, the port III of four road voltages/six road current power amplifiers is connected with electric current port II with small current grounding system single-phase grounding selecting device voltage port I respectively with port IV.
3. when being provided with 1～8 Small Electric Current Earthing And Routing Device and connecting simultaneously, the voltage port I of each Small Electric Current Earthing And Routing Device back parallel with one another is connected with the port III of four road voltages/six road current power amplifiers; After connecting each other, the electric current port II of each Small Electric Current Earthing And Routing Device is connected with the port IV of four road voltages/six road current power amplifiers.
The advantage of the utility model has:
1. the test platform of the single-phase grounded malfunction in grounded system of low current line selection apparatus that proposes of the utility model; By existing real-timedigital simulation system; Utilize its open input, output function; With actual power distribution network model, promptly the running environment of small current grounding system single-phase grounding selecting device is based upon on the RTDS of real-timedigital simulation system, forms the real-time hybrid simulation system of a cover.For low-current ground fault line selection technology and device lack always effective industry standard and test criterion, power supply enterprise when the product type selecting existence there are no laws to abide by, can not accurately hold the phenomenon of products characteristics, the lectotype selection that is established as little electric current selecting arrangement design department's technical research and run unit of this test platform provides technical basis and verification method.
2. the utility model can be to carrying out functional test with a kind of, many line selection apparatus, and perhaps the line selection apparatus to different model and principle carries out functional test simultaneously.
Description of drawings
The structural representation of the route selection functional test platform of Fig. 1, a kind of single-phase grounded malfunction in grounded system of low current line selection apparatus of the utility model.
Among the figure: the RTDS of real-timedigital simulation system 1, four road voltages/six road current power amplifiers 2, small current grounding system single-phase grounding selecting device 3.
Embodiment
Method of application of the utility model and principle of work are:
In the RTDS of real-timedigital simulation system, 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 four 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 substation secondary value from the simulating signal of the RTDS of real-timedigital simulation system output; To export to the small current grounding system single-phase grounding selecting device through the voltage/current signals that power amplifier amplifies again.
The different faults condition that the utility model can possibly occur according to the scene makes an experiment 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 complete detection small current grounding system single-phase grounding selecting device.
Below in conjunction with accompanying drawing the utility model is done further to describe.
A kind of structure of route selection functional test platform of single-phase grounded malfunction in grounded system of low current line selection apparatus is as shown in Figure 1, and a kind of route selection functional test platform of single-phase grounded malfunction in grounded system of low current line selection apparatus is made up of the RTDS of real-timedigital simulation system (Real Time Digital System) 1, four road voltages/six road current power amplifiers 2 and small current grounding system single-phase grounding selecting device 3 these three unit.It is a kind of real-timedigital simulation system that manufacturer produces for the said real-timedigital simulation RTDS of system 1, in the RTDS of real-timedigital simulation system 1, is provided with port I and port II; Said four road voltages/six road current power amplifiers 2 are provided with port I, port II, port III and port IV; Said small current grounding system single-phase grounding selecting device 3 is a device being tested, and it 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, is provided with voltage port I and electric current port II.The annexation of each unit is following:
The port I of the RTDS of real-timedigital simulation system 1 is connected with port II with the port I of four road voltages/six road current power amplifiers 2 respectively with port II.
The port III of four road voltages/six road current power amplifiers 2 is connected with electric current port II with the voltage port I of tested small current grounding system single-phase grounding selecting device 3 respectively with port IV.
Claims (1)
1. the route selection functional test platform of a single-phase grounded malfunction in grounded system of low current line selection apparatus; It is characterized in that: it is made up of the RTDS of real-timedigital simulation system, four road voltages/six road current power amplifiers and three unit of small current grounding system single-phase grounding selecting device, and wherein Small Electric Current Earthing And Routing Device has 1～8; The RTDS of real-timedigital simulation system is provided with port I and port II; Four road voltages/six road current power amplifiers are provided with port I, port II, port III and port IV; The small current grounding system single-phase grounding selecting device is provided with voltage port I and electric current port II; Each unit connection relation is following:
1) the port I of the RTDS of real-timedigital simulation system is connected with port II with the port I of four road voltages/six road current power amplifiers respectively with port II;
2) when being provided with 1 Small Electric Current Earthing And Routing Device, the port III of four road voltages/six road current power amplifiers is connected with electric current port II with small current grounding system single-phase grounding selecting device voltage port I respectively with port IV;
3) when being provided with 1～8 Small Electric Current Earthing And Routing Device and connecting simultaneously, the voltage port I of each Small Electric Current Earthing And Routing Device back parallel with one another is connected with the port III of four road voltages/six road current power amplifiers; After connecting each other, the electric current port II of each Small Electric Current Earthing And Routing Device is connected with the port IV of four road voltages/six road current power amplifiers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203435755U CN202256644U (en) | 2011-09-14 | 2011-09-14 | Line-selection functional test platform of single-phase ground fault line-selection device of small-current grounding system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203435755U CN202256644U (en) | 2011-09-14 | 2011-09-14 | Line-selection functional test platform of single-phase ground fault line-selection device of small-current grounding system |
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| CN202256644U true CN202256644U (en) | 2012-05-30 |
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| CN2011203435755U Expired - Lifetime CN202256644U (en) | 2011-09-14 | 2011-09-14 | Line-selection functional test platform of single-phase ground fault line-selection device of small-current grounding system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2011
- 2011-09-14 CN CN2011203435755U patent/CN202256644U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Granted publication date: 20120530 |
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| CX01 | Expiry of patent term |