CN204154824U - Surge voltage and oscillation frequency synthesis loop test platform - Google Patents
Surge voltage and oscillation frequency synthesis loop test platform Download PDFInfo
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- CN204154824U CN204154824U CN201420550019.9U CN201420550019U CN204154824U CN 204154824 U CN204154824 U CN 204154824U CN 201420550019 U CN201420550019 U CN 201420550019U CN 204154824 U CN204154824 U CN 204154824U
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Abstract
The utility model provides a kind of surge voltage and oscillation frequency synthesis loop test platform, and it comprises oscillation frequency loop, surge voltage loop; Described oscillation frequency loop comprises frequency inductance, power frequency electric capacity, power electronic power device, and described surge voltage loop comprises sample resistance, impulse voltage generator, bleeder mechanism; After described power frequency electric capacity is connected with described power electronic power device, in parallel with described frequency inductance, described impulse voltage generator, described bleeder mechanism respectively; In parallel with described impulse voltage generator after described sample resistance series connection tested object.Adopt synthesis loop test platform of the present utility model, can cost-saving, ensure to improve the accuracy of testing the overvoltage protective capability of over-pressure safety device while power grid security.
Description
Technical field
The utility model relates to technical field of electric power, particularly relates to a kind of surge voltage and oscillation frequency synthesis loop test platform.
Background technology
Along with the development of power technology; various overvoltage protection is obtained for and develops rapidly on quantity, quality and capacity; also more and more higher to the testing requirements of overvoltage protection; particularly also more and more higher to the testing requirements of the overvoltage protective capability of line thunder protection device; wherein, be that the test of ability is cut off to power frequency continued flow to the test key of the overvoltage protective capability of line thunder protection device.But the mode that the measurement circuit lightning arrester power frequency continued flow developed at present cuts off ability adopts large-scale test unit, the integrated lightning impulse of this test unit and power frequency supply, the actual condition that real simulation hanging net operation leakage conductor is struck by lightning, but costly.
In order to the needs that the overvoltage protection saving equipment investment and meet high voltage large capcity develops, synthesis loop test method is widely adopted.Such as, a kind of afterflow for external series gap leakage conductor is cut off test loop and can effectively be tested leakage conductor overvoltage protective capability, meets the requirement cutting off test in IEC60099-8 about afterflow.But because its power frequency electric potential source takes from system test transformer station, namely need to connect network system voltage, there are testing expenses high, the problems such as input cost is large, and process of the test can bring potential safety hazard to operation of power networks.Can to be tested by equivalence in addition or sampling ratio unit carries out, but the accuracy of testing the overvoltage protective capability of over-pressure safety device is on the low side.
Utility model content
The purpose of this utility model is the shortcoming and defect overcoming prior art; a kind of surge voltage and oscillation frequency synthesis loop test platform are provided, can cost-saving, avoid that potential safety hazard is caused to electrical network while improve accuracy that the overvoltage protective capability of over-pressure safety device is tested.
The purpose of this utility model is achieved by the following scheme:
A kind of surge voltage and oscillation frequency synthesis loop test platform, comprise oscillation frequency loop, surge voltage loop;
Described oscillation frequency loop comprises frequency inductance, power frequency electric capacity, power electronic power device, and described surge voltage loop comprises sample resistance, impulse voltage generator, bleeder mechanism;
After described power frequency electric capacity is connected with described power electronic power device, in parallel with described frequency inductance, described impulse voltage generator, described bleeder mechanism respectively;
In parallel with described impulse voltage generator after described sample resistance series connection tested object.
Adopt test platform of the present utility model, due to by power electronic power device by oscillation frequency loop, surge voltage loop couples together, can realize oscillation frequency loop, the synchro control in surge voltage loop, the actual condition of over-pressure safety device can be simulated really, effectively, correctly test the overvoltage protective capability of over-pressure safety device, simultaneously, rated voltage and the rated current of electric system can be provided by the parameter configuration in oscillation frequency loop, and do not need to connect network system voltage, avoid and bring potential safety hazard to operation of power networks in process of the test, and it is low to have cost, floor area is little, the advantages such as O&M is simple.
Wherein in an embodiment, above-mentioned surge voltage and oscillation frequency synthesis loop test platform, current limiting element can also be comprised, described current limiting element is connected between described oscillation frequency loop and described surge voltage loop, to guarantee the dash current limiting oscillation frequency loop in surge voltage time-continuing process.
Wherein in an embodiment, described current limiting element can comprise impact current-limiting inductance, to improve current limitation effect while the dash current guaranteeing to limit oscillation frequency loop in surge voltage time-continuing process.
Wherein in an embodiment, described power frequency electric capacity can comprise multiple capacitor, and each described capacitor is connected or is connected in parallel, can by the electric capacity of the change adjustment power frequency electric capacity of series-parallel system between capacitor and operating voltage grade.
Wherein in an embodiment; described tested object can comprise the voltage protectors such as line thunder protection device, Surge suppression protector or voltage dependent resistor (VDR); be namely say, surge voltage of the present utility model and oscillation frequency synthesis loop test platform may be used for the test of the voltage protection ability realized voltage protectors such as line thunder protection device, Surge suppression protector or voltage dependent resistor (VDR)s.
Accompanying drawing explanation
Fig. 1 is the structural representation of a surge voltage of the present utility model and oscillation frequency synthesis loop test platform embodiment wherein;
Fig. 2 is the structural representation of surge voltage of the present utility model and oscillation frequency synthesis loop test platform another embodiment wherein.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is elaborated, but embodiment of the present utility model is not limited thereto.
Shown in Figure 1, be the structural representation of surge voltage of the present utility model and oscillation frequency synthesis loop test platform embodiment.As shown in Figure 1, the surge voltage in the present embodiment and oscillation frequency synthesis loop test platform comprise oscillation frequency loop 10, surge voltage loop 20;
Wherein, oscillation frequency loop 10 comprises frequency inductance 11, power frequency electric capacity 12, power electronic power device 13, and surge voltage loop 20 comprises sample resistance 21, impulse voltage generator 22, bleeder mechanism 23;
After power frequency electric capacity 12 is connected with power electronic power device 13, in parallel with frequency inductance 11, described impulse voltage generator 22, described bleeder mechanism 23 respectively, wherein, power frequency electric capacity 12 can comprise multiple capacitor, each described capacitor can be connected or be connected in parallel, also can connection in series-parallel Hybrid connections, electric capacity and the operating voltage grade of power frequency electric capacity can be adjusted by the change of series-parallel system between capacitor;
Sample resistance 21 is connected in parallel with described impulse voltage generator after tested object 00;
Here, tested object 10 can comprise the one in the over-pressure safety devices such as line thunder protection device, Surge suppression protector or voltage dependent resistor (VDR), can realize the test of the overvoltage protective capability of the over-pressure safety device to any one.
Principle of work of hitting voltage and oscillation frequency synthesis loop test platform of the present utility model is: power frequency electric capacity 12 can by external charging device or power source charges to the rated voltage of network system, power frequency electric capacity 12 and frequency inductance 11, power electronic power device 13 form oscillation frequency loop, power electronic power device 13 original state is blocking state, and system is without oscillation frequency; Sample resistance 21 is for measuring the electric current flow through in tested object 00, and surge voltage is applied to the two ends of tested object 00, and the characteristic of tested object 00 determines it and punctures conducting when suffering superpotential, has dash current to flow through in conducting loop; Simultaneously in surge voltage generating process (constant conduction 120 milliseconds), synchronous triggering signal can be obtained by bleeder mechanism 23, time controling scope (5 delicate within) the internal trigger power electronic power device 13 preset, activate oscillation frequency loop, system starting of oscillation, form power frequency supply, the conductive channel continuous discharge that this power supply is set up by surge voltage, form power frequency continued flow; Current waveform, the voltage waveform of tested object 00 two ends branch road can be obtained by sample resistance 21 and bleeder mechanism 23, tested object 00 whether correct operation conducting just can be judged according to this current waveform, voltage waveform, whether wanting seeking time internal cutting off power frequency continued flow, calculate the technical parameters such as breaking current amplitude size, thus verify whether its overvoltage protection function power meets needs of production.
The utility model passes through power electronic power device 13 by oscillation frequency loop 10, surge voltage loop 20 couples together, achieve oscillation frequency loop 10, the synchronous triggering in surge voltage loop 20, the operating mode at flashover passage two ends can be applied to by real simulation voltage protector power-frequency voltage after suffering lightning impulse of going out electric system simultaneously, gather High Voltage Impulse Waveform simultaneously, impulse current waveform, can the power frequency continued flow current waveform that passes through after suffering Lightning Over-voltage of measuring circuit lightning protection, improve the accuracy of test, simultaneously, without the need to outside electric power network system voltage, avoid and potential safety hazard is caused to electric system, and there is low cost of manufacture, floor area is little, the advantages such as testing experiment expense is few, test platform of the present utility model can provide surge voltage under 10 kilovoltage grades and power frequency continued flow in short-term.
In order to protect synthesis loop test platform, wherein in an embodiment, as shown in Figure 2, surge voltage of the present utility model and oscillation frequency synthesis loop test platform, current limiting element 30 can also be comprised, this current limiting element 30 is connected between oscillation frequency loop 10 and surge voltage loop 20, to guarantee the dash current limiting oscillation frequency loop in surge voltage time-continuing process, and synthesis loop test platform is protected, current limiting element 30 is generally impact current-limiting inductance, impact current-limiting inductance is applied to this surge voltage of the present utility model and oscillation frequency synthesis loop test platform, current limitation effect is good.
The above embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (5)
1. surge voltage and an oscillation frequency synthesis loop test platform, is characterized in that, comprises oscillation frequency loop, surge voltage loop;
Described oscillation frequency loop comprises frequency inductance, power frequency electric capacity, power electronic power device, and described surge voltage loop comprises sample resistance, impulse voltage generator, bleeder mechanism;
After described power frequency electric capacity is connected with described power electronic power device, in parallel with described frequency inductance, described impulse voltage generator, described bleeder mechanism respectively;
In parallel with described impulse voltage generator after described sample resistance series connection tested object.
2. surge voltage according to claim 1 and oscillation frequency synthesis loop test platform, is characterized in that, also comprise current limiting element, and described current limiting element is connected between described oscillation frequency loop and described surge voltage loop.
3. surge voltage according to claim 2 and oscillation frequency synthesis loop test platform, it is characterized in that, described current limiting element comprises impact current-limiting inductance.
4. surge voltage according to claim 1 and oscillation frequency synthesis loop test platform, is characterized in that, described power frequency electric capacity comprises multiple capacitor, and each described capacitor is connected or is connected in parallel.
5. surge voltage according to claim 1 and oscillation frequency synthesis loop test platform, is characterized in that, described tested object comprises line thunder protection device, Surge suppression protector or voltage dependent resistor (VDR).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420550019.9U CN204154824U (en) | 2014-09-23 | 2014-09-23 | Surge voltage and oscillation frequency synthesis loop test platform |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420550019.9U CN204154824U (en) | 2014-09-23 | 2014-09-23 | Surge voltage and oscillation frequency synthesis loop test platform |
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| CN204154824U true CN204154824U (en) | 2015-02-11 |
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| CN201420550019.9U Active CN204154824U (en) | 2014-09-23 | 2014-09-23 | Surge voltage and oscillation frequency synthesis loop test platform |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104820149A (en) * | 2015-05-05 | 2015-08-05 | 南方电网科学研究院有限责任公司 | Test loop of action load of lightning arrester proportional unit |
| CN106093622A (en) * | 2016-05-30 | 2016-11-09 | 中国西电电气股份有限公司 | Super, extra-high voltage direct-current transmission TCU structure converter valve components IGCT level pilot system |
| CN107505553A (en) * | 2017-08-29 | 2017-12-22 | 国网湖南省电力公司 | A kind of power frequency continued flow experimental rig and its application method |
| CN110398675A (en) * | 2019-07-17 | 2019-11-01 | 中国电力科学研究院有限公司 | A kind of method and system for the measurement to power frequency and impact superimposed voltage waveform |
| CN112345903A (en) * | 2020-10-29 | 2021-02-09 | 中国电力科学研究院有限公司 | Voltage generating device and method for power frequency superimposed impulse voltage |
-
2014
- 2014-09-23 CN CN201420550019.9U patent/CN204154824U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104820149A (en) * | 2015-05-05 | 2015-08-05 | 南方电网科学研究院有限责任公司 | Test loop of action load of lightning arrester proportional unit |
| CN106093622A (en) * | 2016-05-30 | 2016-11-09 | 中国西电电气股份有限公司 | Super, extra-high voltage direct-current transmission TCU structure converter valve components IGCT level pilot system |
| CN107505553A (en) * | 2017-08-29 | 2017-12-22 | 国网湖南省电力公司 | A kind of power frequency continued flow experimental rig and its application method |
| CN110398675A (en) * | 2019-07-17 | 2019-11-01 | 中国电力科学研究院有限公司 | A kind of method and system for the measurement to power frequency and impact superimposed voltage waveform |
| CN112345903A (en) * | 2020-10-29 | 2021-02-09 | 中国电力科学研究院有限公司 | Voltage generating device and method for power frequency superimposed impulse voltage |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210304 Address after: Room 501-503, annex building, Huaye building, No.1-3 Chuimao new street, Xihua Road, Yuexiu District, Guangzhou City, Guangdong Province 510000 Patentee after: China Southern Power Grid Power Technology Co.,Ltd. Address before: 528000 No. 1 South Fenjiang Road, Chancheng District, Guangdong, Foshan Patentee before: FOSHAN POWER SUPPLY BUREAU, GUANGDONG POWER GRID Corp. |
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| TR01 | Transfer of patent right |