CN206848403U - A kind of four machine Parallel test loops - Google Patents
A kind of four machine Parallel test loops Download PDFInfo
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- CN206848403U CN206848403U CN201720790215.7U CN201720790215U CN206848403U CN 206848403 U CN206848403 U CN 206848403U CN 201720790215 U CN201720790215 U CN 201720790215U CN 206848403 U CN206848403 U CN 206848403U
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- 238000002474 experimental method Methods 0.000 claims description 7
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- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
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- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
The utility model discloses a kind of four machine Parallel test loops, including generator system, generator system includes four short-circuit impact generator G, and each short-circuit impact generator G is connected with an independent test circuit, four test loops of composition；Wherein, test loop connects to form two two machine shunt circuits by a first parallel operation line road two-by-two, is connected between the first parallel operation line road of two two machine shunt circuits by the second parallel operation line road.Parallel operation line road in the loop can realize any two generators and machine is run, improve the flexibility of test circuit, the generator test system resource of different model is combined, fully excavates the test capability of Laboratory, lifting test detection level.
Description
Technical field
The utility model belongs to high-voltage electrical equipment high power laboratory field, is related to one kind and is used for High-Voltage Electrical Appliances short-circuit test
Four machine Parallel test loops.
Background technology
With the continuous improvement of power plant and power system capacity, the rated short circuit current of high-voltage electrical equipment is also continuous
Increase.Such as larger power equipment of Generator Circuit Breaker of Large Capacity, disconnecting switch, bus rated short circuit current, to high-tension electricity
The test capability of device Laboratory proposes high requirement.In order to produce the huge short circuit current of numerical value, prior art is mostly
The generator parallel of two identical capacity, but this method is limited for reducing test loop impedance, or even some electricity can not be met
The experiment demand of power equipment.And the short-circuit current value of every test circuit Proximity operation switch CK nominal short-circuit cut-off electricity
Stream, therefore certain risk be present, if CK failure of interruption, it can damage and generator and testing equipment are caused damage.
Utility model content
In order to meet the experiment demand of such as Generator Circuit Breaker of Large Capacity, disconnecting switch, enclosed busbar power equipment, and
The problem of overcoming prior art to exist, the utility model provide a kind of four machine Parallel test loops, and the connected mode can subtract
Few current-limiting reactor quantity, and realize any two generators and machine.
To achieve the above object, the utility model uses following technical scheme：
A kind of four machine Parallel test loops, including generator system, generator system include four short-circuit impact generators
G, each short-circuit impact generator G are connected with an independent test circuit, form four test loops, all test loops
Converged in test product SP front ends；Wherein, test loop connects to form two two machines by a first parallel operation line road two-by-two
Shunt circuit, pass through the second parallel operation line road between the first parallel operation line road of two two machine shunt circuits and connect.
The experiment power supply of described test loop is by short-circuit impact generator G through protective breaker BD, closing switch HK, tune
Section reactor, Operation switch CK are connected to test product SP.
Intermediate transformer T is each additionally provided between Operation switch CK and test product SP.
The first described parallel operation line road is by first and two current-limiting reactor L of machine switch connectionBComposition, the first parallel operation line
The beginning or end on road is between protective breaker BD and closing switch HK.
The second described parallel operation line road is made up of the circuit for being provided with second and machine switch, the starting point on the second parallel operation line road
Or terminal is located at two current-limiting reactor L on the first parallel operation line roadBBetween.
Each current-limiting reactor LBIt is made up of three current-limiting reactors.
Seven regulation reactors are provided between the closing switch HK and Operation switch CK of described test loop.
In four short-circuit impact generator G, the terminal short-circuit capacity of two is 6500MVA, in addition two terminal short-circuit
Capacity is 2500MVA.
The utility model compared with prior art, has advantages below：
The utility model is by the use of four generator parallels as power supply, and four independent test circuit parallel connections are to reduce total resistance
Anti- test loop, the connected mode can reduce current-limiting reactor quantity, and realize any two generators and machine.Can be with
Short-circuit current value is significantly improved, meets the experiment demand of associate power equipment.And the huge short circuit current of numerical value is distributed to four
Bar test circuit, the short circuit current of every test circuit is reduced, reduce equipment and occur with bad risk.Parallel operation line in the loop
Road can realize any two generators and machine is run, and improves the flexibility of test circuit, and the generator of different model is tried
Check system resource is combined, and fully excavates the test capability of Laboratory, lifting test detection level.
Further, four test circuits are separate, only parallel operation line road and close to tie point at test product front end two, can be with
Test loop total impedance is reduced to greatest extent, improves test current.When being directly connected after CK with test product, adjusted in generator
The maximum three short circuit current that can produce 230kA under 12kV.
Further, it is possible to by adjusting regulation reactor L1~L7To realize the short-circuit current value needed for different test products.
Brief description of the drawings
Fig. 1 is test loop schematic diagram one of the present utility model；
Fig. 2 is test loop schematic diagram two of the present utility model；
Wherein G is short-circuit impact generator, and BD is protective breaker, and CK is closing switch, L1~L7To adjust reactor,
CK is Operation switch, and BK switchs for simultaneously machine, LBFor current-limiting reactor, T is intermediate transformer, and SP is test product.
Embodiment
The utility model is described in detail below in conjunction with the accompanying drawings：
Referring to Fig. 1, Fig. 2, a kind of four machines Parallel test loop of the present utility model, for High-Voltage Electrical Appliances short-circuit test, by
Four short-circuit impact generators are as power supply, and every generator is connected with an independent test circuit respectively, including generator
Protective breaker BD, closing switch HK, Operation switch CK and seven regulation reactor L1~L7, test circuit passes through middle anaplasia
Depressor is connected with test product or directly converged in test product front end.Four generators are connected by a parallel operation line road, and parallel operation line road includes
Three breaker BK and 12 current-limiting reactor LB, parallel operation line road beginning and end be located at protective breaker BD after, close a floodgate
Before switch CK.
Four machine Parallel test loop concrete structures are：Including four short-circuit impact generator G1~G4, four test circuit bags
Include regulation reactor L1~L7, protective breaker BD, closing switch HK, Operation switch CK, a parallel operation line road includes three and machines
Switch BK, 12 current-limiting reactor LB.The terminal short-circuit capacity of four generators wherein two is 6500MVA, two in addition
For 2500MVA.Parallel operation line route three parts composition, Part I are connection G1 and G2 parallel operation line road, including one and machine open
Close BKOWith six current-limiting reactor LB, its beginning and end be located at protective breaker after, before closing switch.Part II is connection
G4 and G5 parallel operation line road, including one and machine switch BKNWith six current-limiting reactor LB, it is disconnected that its beginning and end is located at protection
After the device of road, before closing switch.Part III beginning and end is located at the midpoint of Part I and Part II, including one simultaneously
Machine switchs BKF, the connected mode can reduce current-limiting reactor quantity, and realize any two generators and machine run.
Four test circuit is separate, only parallel operation line road and close to tie point at test product front end two, can be with maximum limit
Degree ground reduces test loop total impedance, improves test current, and the huge short-circuit current value of numerical value is assigned into four test wires
Road, reduce the short circuit current of each bar test circuit, reduce the risk that equipment is damaged.Can be by adjusting regulation reactor L1
~L7To realize the short-circuit current value needed for different test products, if the test loop is joined directly together with test product, it is in generator voltage
The maximum three short circuit current that can produce 230kA under 12kV.The terminal short-circuit capacity of four short-circuit impact generators wherein two
For 6500MVA, two are 2500MVA in addition.
Before experiment, according to regulation reactor L of the short-circuit current value to test loop1~L7It is adjusted, makes at BD, CK, SP
In closing position, HK is in open position.Respectively four generators are carried out with excitation boostings, then by G1With G2, G4With G5It is same respectively
Shi Jinhang and machine, two generators is subjected to simultaneously machine again after synchronous operation to be achieved, realizes four generators synchronous operations, afterwards
Phase selection is carried out using HK immediately, makes test loop that short circuit occur, short-circuit test, test product drop-out current or profit are implemented to test product
Test loop is disconnected with CK, terminates experiment.
The four machine Parallel test loops of this certain practicality can also be extended in other multi-machine parallel connection loops, such as 6
In individual test loop, it can carry out two-by-two and machine forms 3 group of two machine shunt circuit.Connect to form six by the second parallel operation line road again
Machine is in parallel.Such as in 8 test loops, after two four machine shunt circuits can be formed, then pass through the second parallel operation line road connection shape
Cheng Baji is in parallel.If 5 test loops, a four machine shunt circuits and a single test loop can be formed, it is single
Only test loop connects other two machine shunt circuits by the first parallel operation line road.
More than, preferred embodiment only of the present utility model, it is not limited only to practical range of the present utility model, Fan Yiben
The equivalence changes and modification that the content of utility model scope is done, it all should be technology category of the present utility model.
Claims (8)
1. a kind of four machine Parallel test loops, it is characterised in that including generator system, generator system includes four short circuits and rushed
Motor G is fired, each short-circuit impact generator G is connected with an independent test circuit, four test loops of composition, all
Converged in test product SP front ends test loop；Wherein, test loop connects to be formed by a first parallel operation line road two-by-two
Two two machine shunt circuits, pass through the second parallel operation line road between the first parallel operation line road of two two machine shunt circuits and connect.
A kind of 2. four machines Parallel test loop according to claim 1, it is characterised in that the experiment electricity of each test loop
Source is connected to test product by short-circuit impact generator G through protective breaker BD, closing switch HK, regulation reactor, Operation switch CK
SP。
3. a kind of four machines Parallel test loop according to claim 2, it is characterised in that each Operation switch CK and test product
Intermediate transformer T is additionally provided between SP.
4. a kind of four machines Parallel test loop according to claim 2, it is characterised in that the first described parallel operation line road is
By first and two current-limiting reactor L of machine switch connectionBComposition, the beginning or end on the first parallel operation line road are located at protective breaker
Between BD and closing switch HK.
5. a kind of four machines Parallel test loop according to claim 4, it is characterised in that the second described parallel operation line road is
It is made up of the circuit for being provided with second and machine switch, the beginning or end on the second parallel operation line road is located at two of the first parallel operation line road
Current-limiting reactor LBBetween.
A kind of 6. four machines Parallel test loop according to claim 4, it is characterised in that each current-limiting reactor LBBy three
Platform current-limiting reactor forms.
A kind of 7. four machines Parallel test loop according to claim 2, it is characterised in that the combined floodgate of described test loop
Seven regulation reactors are provided between switch HK and Operation switch CK.
A kind of 8. four machines Parallel test loop according to claim 1, it is characterised in that four short-circuit impact generator G
In, the terminal short-circuit capacity of two is 6500MVA, and the terminal short-circuit capacity of two is 2500MVA in addition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720790215.7U CN206848403U (en) | 2017-06-30 | 2017-06-30 | A kind of four machine Parallel test loops |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720790215.7U CN206848403U (en) | 2017-06-30 | 2017-06-30 | A kind of four machine Parallel test loops |
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| CN206848403U true CN206848403U (en) | 2018-01-05 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927619A (en) * | 2018-09-19 | 2020-03-27 | 西安高压电器研究院有限责任公司 | Short circuit on-off test system of marine electrical appliance |
| CN113985191A (en) * | 2021-12-29 | 2022-01-28 | 苏州电器科学研究院股份有限公司 | System and method for testing short circuit bearing capacity of extra-high voltage transformer |
| CN114325475A (en) * | 2021-12-29 | 2022-04-12 | 苏州电器科学研究院股份有限公司 | Power supply circuit and method of ultra-high voltage transformer short-circuit test system |
-
2017
- 2017-06-30 CN CN201720790215.7U patent/CN206848403U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927619A (en) * | 2018-09-19 | 2020-03-27 | 西安高压电器研究院有限责任公司 | Short circuit on-off test system of marine electrical appliance |
| CN113985191A (en) * | 2021-12-29 | 2022-01-28 | 苏州电器科学研究院股份有限公司 | System and method for testing short circuit bearing capacity of extra-high voltage transformer |
| CN114325475A (en) * | 2021-12-29 | 2022-04-12 | 苏州电器科学研究院股份有限公司 | Power supply circuit and method of ultra-high voltage transformer short-circuit test system |
| CN114325475B (en) * | 2021-12-29 | 2024-04-09 | 苏州电器科学研究院股份有限公司 | Power supply circuit and method of extra-high voltage transformer short circuit test system |
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| 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. |
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| 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. |