CN207650356U - Experiment power supply for large capacity mesolow dc circuit breaker short circuit switching test - Google Patents
Experiment power supply for large capacity mesolow dc circuit breaker short circuit switching test Download PDFInfo
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- CN207650356U CN207650356U CN201721722798.6U CN201721722798U CN207650356U CN 207650356 U CN207650356 U CN 207650356U CN 201721722798 U CN201721722798 U CN 201721722798U CN 207650356 U CN207650356 U CN 207650356U
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Abstract
A kind of experiment power supply for large capacity mesolow dc circuit breaker short circuit switching test of the utility model, including short-circuit generator G and short-circuit transformer T；Short-circuit generator G tail ends are connected in series and are grounded by tail end reactor LL connections neutral earthing devices ZN, neutral earthing devices ZN；Short-circuit generator G head ends are sequentially connected protective breaker BD, closing switch HK, adjust reactor LR, operating breaker CD and power factor resistance RS, are then serially connected to the high-pressure side of short-circuit transformer T；AC-testing supply is become DC experiment power supply, DC experiment power supply outlet side arrangement subject breaker SP and auxiliary switch FK, subject breaker SP low-pressure sides ground connection by the low-pressure side of short-circuit transformer T by six arteries and veins full-bridge rectification devices.The experimental power supply is capable of providing big capacity of short circuit.
Description
Technical field
The utility model is related to mesolow dc circuit breaker high power laboratory fields, more particularly to a kind of in large capacity
The experiment power supply of low-voltage direct short circuit switching test.
Background technology
Development based on rail traffic, marine ship field, mesolow dc circuit breaker start to be widely used in above-mentioned row
In industry, domestic and international enterprise and scientific research institution have also carried out the development work of dc circuit breaker one after another accordingly.Mesolow direct-current short circuit
Electric current cut-off be dc circuit breaker research difficult point, for this purpose, both at home and abroad laboratory carried out one after another mesolow direct-current short circuit folding
The exploitation of test loop.Become using decompression compared to other laboratories, rectification, which becomes, is used as experiment power supply, examination described in the utility model
Electrical verification source is generated electricity using ac short circuit transformer and short-circuit impact on the basis of western Supreme Court existing exchange capacity test circuit
A kind of circuit of the machine as experiment power supply, the experiment power supply have many advantages, such as that capacity of short circuit is big, equivalence is good, cost-effective.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of for mesolow direct-current short circuit switching test
Experiment power supply is capable of providing big capacity of short circuit.
To solve the above-mentioned problems, the utility model is achieved using following technical scheme：
A kind of experiment power supply for large capacity mesolow dc circuit breaker short circuit switching test, including short-circuit generator G
With short-circuit transformer T；Short-circuit generator G tail ends pass through tail end reactor LL connection neutral earthing devices ZN, neutral ground
Device ZN is connected in series and is grounded；Short-circuit generator G head ends are sequentially connected protective breaker BD, closing switch HK, adjust reactance
Device LR, operating breaker CD and power factor resistance RS, are then serially connected to the high-pressure side of short-circuit transformer T；Short-circuit transformation
AC-testing supply is become DC experiment power supply by the low-pressure side of device T by six arteries and veins full-bridge rectification devices, and DC experiment power supply is defeated
Go out side arrangement subject breaker SP and auxiliary switch FK, subject breaker SP low-pressure sides ground connection.
The short-circuit transformer T is made of three single-phase transformers, and high-pressure side winding is coupled by triangle, and short circuit becomes
The low-pressure side winding of depressor T presses Astrocytic conditioned medium, transformer voltage ratio 3:1.
Power of alterating and direct current both ends are parallel with arrester respectively.
Alterating and direct current source output terminal is respectively arranged with current sensor.
The high-pressure sides subject breaker SP are connected with the voltage sensor of the voltage-to-ground for measuring the both ends subject breaker SP
Device PT.
Further include load reactance device L and loading resistor R, the series circuit of load reactance device L and loading resistor R compositions
It is connected across the output end of DC experiment power supply.
The short-circuit generator G is surge generator.
Compared with prior art, the utility model has technique effect beneficial below：
A kind of experiment power supply for large capacity mesolow dc circuit breaker short circuit switching test of the utility model, use are short
The high-pressure side of road transformer is become AC power by fairing as output end, low-pressure side as input terminal, low-pressure side
DC power supply.For the experiment power supply on the basis of AC Test Circuits, comprehensively utilizing short-circuit transformer makes it act as decompression
The role of change, and meet the demand of rectification change, it may be convenient to switch between AC-testing supply and DC experiment power supply,
Save a large amount of place and cost of equipment.And using the experiment power supply circuit operation it is simple, test efficiency is high, short-circuit appearance
The voltage current waveform that amount is big, experiment power supply generates is also close with actual motion condition, has very high equivalence.
Further, be used as experiment power supply using three short-circuit transformers, by its high and low pressure side respectively by triangle with it is star-like
It is attached, on the one hand can form an earth neutral system as the mains side of commutating circuit in this way (ensures rectification dress
The normal use set), on the other hand the circuit can also effectively eliminate triple-frequency harmonics, protect transformer and generator.
Further, the appearance of pilot system is can effectively improve using the electric power loop of surge generator and short-circuit transformer
Amount is suitable for voltage class 5kV, the high-capacity direct flow short-circuit folding examination within short circuit current 120kA, capacity of short circuit 600MVA
It tests.
Description of the drawings
Fig. 1 is the test principle figure of direct-current short circuit switching test；
In figure：G- short-circuit generators；BD- protective breakers；HK- closing switchs；CD- operating breakers；ZN- neutral points connect
Ground device；LL- tail end reactors；LR- adjusts reactor；T- short circuit transformers；D1-D6 rectifiers；SP- is tested breaker；FK-
Auxiliary switch；L- load-side reactance；R- loads side resistance；CT- current sensors；PT- voltage sensors；Ar1- exchange side is lightning-arrest
Device；Ar2- DC side arresters.
Specific implementation mode
The utility model is described in further detail with reference to specific embodiment, described is to the utility model
Explanation rather than limit.
Referring to Fig. 1, a kind of experiment electricity for large capacity mesolow dc circuit breaker short circuit switching test of the utility model
Source, wherein short-circuit generator G tail ends pass through tail end reactor LL connection neutral earthing devices ZN, neutral earthing devices ZN strings
Row is connected and is grounded.Experiment power supply is passed through protective breaker BD by short-circuit generator G head ends, closing switch HK, adjusts electricity successively
Anti- device LR, operating breaker CD and power factor resistance RS, parallel series are connected to the high-pressure side of short-circuit transformer T, short-circuit transformation
Device T is made of three single-phase transformers, and high-pressure side winding is coupled by triangle, and the low-pressure side winding of short-circuit transformer T presses star
Shape couples, transformer voltage ratio 3:1.
AC-testing supply is become DC experiment electricity by the low-pressure side of short-circuit transformer T by six arteries and veins full-bridge rectification devices
Source, power of alterating and direct current both ends are parallel with arrester and carry out overvoltage protection respectively.DC experiment power supply side arrangement subject breaker
The series circuit of SP, auxiliary switch FK and current sensor CT, load reactance device L and loading resistor R compositions is connected across direct current
The output end of experiment power supply.Voltage sensor PT is used to measure voltage (over the ground), the load reactance device L master at test product breaker both ends
It is used to adjust the time constant and ripple factor of DC loop, loading resistor R is mainly used for adjusting the short circuit of DC loop
Electric current.
When carrying out short-circuit test, protective breaker BD, operating breaker CD, auxiliary switch FK, test product breaker SP are first closed
In closing position, excitation is carried out to generator.Then, closing switch HK is first closed by test procedure, closing switch HK can be into
Row phase selection is to reach 1.45 times of short-circuit making current peak value.Test product breaker SP separating brakes after short circuit duration 0.1 second, examination
Product breaker SP breaking direct currents, are subjected to higher instantaneous overvoltage after cut-offfing, hereafter test product breaker SP is born 0.3 second
Rating test voltage.Operating breaker CD separating brakes at this time, while demagnetization is carried out to generator, test product breaker SP is not held at both ends
By voltage, off-test.
For the experiment power supply on the basis of AC Test Circuits, comprehensively utilizing short-circuit transformer makes it act as decompression change
Role, and meet rectification change demand, it may be convenient to switch between AC-testing supply and DC experiment power supply, save
A large amount of place and cost of equipment are saved.And using the experiment power supply circuit operation it is simple, test efficiency is high, capacity of short circuit
Greatly, the voltage current waveform that experiment power supply generates is also close with actual motion condition, has very high equivalence.
More than, the only preferred embodiment of the utility model is not limited only to the scope of the utility model, Fan Yiben
The equivalence changes and modification that the content of utility model patent range is done all should be the technology scope of the utility model.
Claims (7)
1. a kind of experiment power supply for large capacity mesolow dc circuit breaker short circuit switching test, which is characterized in that including short
Road generator G and short-circuit transformer T；Short-circuit generator G tail ends by tail end reactor LL connection neutral earthing devices ZN, in
Property point earthing or grounding means ZN is connected in series and is grounded；Short-circuit generator G head ends be sequentially connected protective breaker BD, closing switch HK,
Reactor LR, operating breaker CD and power factor resistance RS are adjusted, the high-pressure side of short-circuit transformer T is then serially connected to；
AC-testing supply is become DC experiment power supply, direct current examination by the low-pressure side of short-circuit transformer T by six arteries and veins full-bridge rectification devices
Electrical verification source outlet side arrangement subject breaker SP and auxiliary switch FK, subject breaker SP low-pressure sides ground connection.
2. a kind of experiment electricity for large capacity mesolow dc circuit breaker short circuit switching test according to claim 1
Source, which is characterized in that the short-circuit transformer T is made of three single-phase transformers, and high-pressure side winding is coupled by triangle,
The low-pressure side winding of short-circuit transformer T presses Astrocytic conditioned medium, transformer voltage ratio 3:1.
3. a kind of experiment for large capacity mesolow dc circuit breaker short circuit switching test according to claim 1 or 2
Power supply, which is characterized in that power of alterating and direct current both ends are parallel with arrester respectively.
4. a kind of experiment for large capacity mesolow dc circuit breaker short circuit switching test according to claim 1 or 2
Power supply, which is characterized in that alterating and direct current source output terminal is respectively arranged with current sensor.
5. a kind of experiment for large capacity mesolow dc circuit breaker short circuit switching test according to claim 1 or 2
Power supply, which is characterized in that the high-pressure sides subject breaker SP are connected with the voltage-to-ground for measuring the both ends subject breaker SP
Voltage sensor PT.
6. a kind of experiment for large capacity mesolow dc circuit breaker short circuit switching test according to claim 1 or 2
Power supply, which is characterized in that further include load reactance device L and loading resistor R, load reactance device L and loading resistor R compositions
Series circuit is connected across the output end of DC experiment power supply.
7. a kind of experiment for large capacity mesolow dc circuit breaker short circuit switching test according to claim 1 or 2
Power supply, which is characterized in that the short-circuit generator G is surge generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721722798.6U CN207650356U (en) | 2017-12-12 | 2017-12-12 | Experiment power supply for large capacity mesolow dc circuit breaker short circuit switching test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721722798.6U CN207650356U (en) | 2017-12-12 | 2017-12-12 | Experiment power supply for large capacity mesolow dc circuit breaker short circuit switching test |
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|---|---|
| CN207650356U true CN207650356U (en) | 2018-07-24 |
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| CN201721722798.6U Active CN207650356U (en) | 2017-12-12 | 2017-12-12 | Experiment power supply for large capacity mesolow dc circuit breaker short circuit switching test |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927474A (en) * | 2018-09-19 | 2020-03-27 | 西安高压电器研究院有限责任公司 | Electrical performance test system of marine electrical product in vibration environment |
| CN114252809A (en) * | 2021-12-29 | 2022-03-29 | 苏州电器科学研究院股份有限公司 | Power supply capacity calculation method and device of extra-high voltage transformer test system |
| CN114325360A (en) * | 2020-10-10 | 2022-04-12 | 西安高压电器研究院股份有限公司 | Short circuit on-off test method and system for high-voltage alternating current circuit breaker |
| CN116609650A (en) * | 2023-07-17 | 2023-08-18 | 西安高压电器研究院股份有限公司 | Direct current transfer test system and method |
-
2017
- 2017-12-12 CN CN201721722798.6U patent/CN207650356U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927474A (en) * | 2018-09-19 | 2020-03-27 | 西安高压电器研究院有限责任公司 | Electrical performance test system of marine electrical product in vibration environment |
| CN114325360A (en) * | 2020-10-10 | 2022-04-12 | 西安高压电器研究院股份有限公司 | Short circuit on-off test method and system for high-voltage alternating current circuit breaker |
| CN114252809A (en) * | 2021-12-29 | 2022-03-29 | 苏州电器科学研究院股份有限公司 | Power supply capacity calculation method and device of extra-high voltage transformer test system |
| CN116609650A (en) * | 2023-07-17 | 2023-08-18 | 西安高压电器研究院股份有限公司 | Direct current transfer test system and method |
| CN116609650B (en) * | 2023-07-17 | 2023-10-20 | 西安高压电器研究院股份有限公司 | Direct current transfer test system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210817 Address after: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee after: XI'AN HIGH VOLTAGE APPARATUS RESEARCH INSTITUTE Co.,Ltd. Address before: 710075 Shaanxi city of Xi'an province high tech Zone No. 7 Tang Xing Lu Patentee before: CHINA XD ELECTRIC Co.,Ltd. Patentee before: XI'AN HIGH VOLTAGE APPARATUS RESEARCH INSTITUTE Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee after: Xi'an High Voltage Electrical Apparatus Research Institute Co.,Ltd. Address before: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee before: XI'AN HIGH VOLTAGE APPARATUS RESEARCH INSTITUTE Co.,Ltd. |