CN205407238U - Hollow current limiting reactor device of dry -type - Google Patents
Hollow current limiting reactor device of dry -type Download PDFInfo
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- CN205407238U CN205407238U CN201620177568.5U CN201620177568U CN205407238U CN 205407238 U CN205407238 U CN 205407238U CN 201620177568 U CN201620177568 U CN 201620177568U CN 205407238 U CN205407238 U CN 205407238U
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Abstract
The utility model provides a hollow current limiting reactor device of dry -type, it includes reactor system, ultracapacitor system, arrester system, a serial communication port, reactor system, ultracapacitor system, arrester system pass through connecting wire parallel connection, just reactor system, ultracapacitor system, arrester system all are equipped with magnetic field shielding spare. The utility model provides a reactor system, ultracapacitor system, arrester system carry out parallel connection by connecting wire respectively, and reactor system, ultracapacitor system, arrester system all are equipped with magnetic field shielding spare to reactor main part and the too high problem of the local field intensity of auxiliary make under the solution high voltage the utility model discloses can satisfy the requirement of electric wire nettings such as 750kV to voltage, current distribution, insulation level and short -time current.
Description
Technical field
This utility model relates to tranformer protection equipment technical field, particularly to a kind of dry type hollow current-limiting reactor device.
Background technology
Along with developing rapidly of electrical network, short circuit current level constantly increases, and short circuit current exceedes the situation of chopper breaking current and is often foreseen.If do not adopted an effective measure, thing followed consequence will be comparatively serious.The most direct effective measures are that all choppers are all replaced by the chopper of bigger breaking current.But being limited to manufacturing cost and technical barrier, this is obviously difficult to.
According to current extra high voltage circuit breaker manufacturing technology, the limit operation-current of chopper is 63kA.For this, 750kV system maximum short circuit current must control at below 63kA, if system short-circuit electric current is close to this ultimate value, must take measures in advance, as can not be effectively controlled, not only influence whether the safe and stable operation of system, also can directly affect the expansion of power system capacity, it is impossible to adapt to and meet the development of the national economy and people's lives.
Taking series connection Large Copacity current-limiting reactor in electrical network is the effective means of limiting short-circuit current, can effectively limit system short-circuit electric current, ensure major network reliability service.Installing current-limiting reactor at present additional is the measure the easiest, economic, reliable maintaining power grid operation.750kV website needs to set up this equipment to tackle the comprehensive excessive problem of increasingly serious short circuit current.
750kV dry type hollow current-limiting reactor device can be series at bus or line side, and the reactor Analysis of End Electric Field that it comprises is concentrated, and dielectric level is all far above ordinary reactors.Being different from the connected mode of conventional shunt reactor or filtering reactor, this type of reactor is generally difficult to out of service, so also just equipment dependability is had higher requirement.
Further specifically; 750kV dry type hollow current-limiting reactor isolated operation can solve short circuit current excessive problem; but when equipped with the circuit generation earth fault of reactor, the short circuit current head half-wave flowing through reactor can produce to operate the residual voltage of ripple level of protection close to spark gap.When line-breaker cut-offs this type of fault, transient recovery overvoltage (TRV) excessive problem can be produced, chopper is produced harm.For this problem, solved by parallel coupled capacitor on equipment.
It addition, for 750kV system, dielectric level is significantly high, for ensureing minor insulation, for air reactor, equipment size can only be increased, consequently, it is possible to transport difficulty is very big.Solve this problem, should spark gap, the minor insulation requirement of reduction equipment in parallel.
Utility model content
The purpose of this utility model is in that to provide a kind of dry type hollow current-limiting reactor device, exceeds standard cause chopper to turn off with high pressure, the extra high voltage system short circuit currents solving to exist under prior art, and then the system brought can not the problem of safe and stable operation.In this utility model, only reactor system not can solve the problems referred to above, and capacitor system and lightning arrester system need to be coordinated to use together.
In order to solve the problems referred to above, this utility model provides following technical scheme:
A kind of dry type hollow current-limiting reactor device, it includes reactor system, capacitor system, lightning arrester system, it is characterized in that, described reactor system, capacitor system, lightning arrester system connect by connecting conductor in parallel, and described reactor system, capacitor system, lightning arrester system are equipped with electric field shielding part.
Preferably, described reactor system includes reactor rain cover, reactor winding, reactor supporting construction, reactor electric field shielding part, described reactor supporting construction is supported in below described reactor winding, described reactor rain cover is covered in above described reactor winding, and the top of described reactor winding and bottom are equipped with described reactor electric field shielding part.
Preferably, described reactor rain cover is connected fixing by multiple support bars with described reactor winding top arm.
Preferably, the upper surface of described reactor rain cover and edge are provided with multiple described reactor electric field shielding part.
Preferably, described reactor supporting construction includes superposed metal transfer bearing, is positioned at the support insulator of bottom, described support insulator, support insulator junction be provided with described reactor electric field shielding part.
Preferably, described capacitor system includes capacitor electric field shielding part, capacitor, capacitor supporting construction, and described capacitor is located at above described capacitor supporting construction, and the top of described capacitor, middle part, bottom are equipped with described capacitor electric field shielding part.
Preferably, described lightning arrester system includes spark gap electric field shielding part, spark gap and spark gap supporting construction, and described spark gap is located at above described spark gap supporting construction, and described spark gap is provided with described spark gap electric field shielding part.
Preferably, the described spark gap electric field shielding part being located on described spark gap is positioned at the top of described spark gap.
Preferably, the top of described spark gap supporting construction also is provided with described spark gap electric field shielding part.
Preferably, described dry type hollow current-limiting reactor device is 750kV dry type hollow current-limiting reactor device.
Analyze known, reactor system in this utility model, capacitor system, lightning arrester system are connected in parallel by connection wire respectively, and reactor system, capacitor system, lightning arrester system are equipped with electric field shielding part, to solve reactor main body and the too high problem of auxiliary local field strength under high voltage so that this utility model disclosure satisfy that the requirement to voltage, CURRENT DISTRIBUTION, dielectric level and short-time current of the electrical networks such as 750kV.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model embodiment.
Fig. 2 is the perspective view of the reactor rain cover of embodiment illustrated in fig. 1.
Fig. 3 is the structural representation of the reactor main body of embodiment illustrated in fig. 1.
Fig. 4 is the structural representation of the reactor supporting construction of embodiment illustrated in fig. 3.
Fig. 5 is the structural representation of the capacitor main body of embodiment illustrated in fig. 1.
Fig. 6 is the structural representation of the spark gap main body of embodiment illustrated in fig. 1.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, this utility model is described in further details.
This utility model embodiment is preferably applied to 750kV power system, that is, the structural representation that embodiment illustrated in fig. 1 is a 750kV dry type hollow current-limiting reactor device, its bus being connected in series in 750kV power system or line side.
As it is shown in figure 1, the present embodiment includes reactor system 1, capacitor system 2, lightning arrester system 3, connects wire 4.Reactor system 1, capacitor system 2, lightning arrester system 3 are connected in parallel by connecting wire 4.The electric field shielding part that reactor system is provided with is called reactor electric field shielding part, and the electric field shielding part that capacitor system is provided with is called capacitor electric field shielding part, and the electric field shielding part that lightning arrester system is provided with is called spark gap electric field shielding part.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, reactor system 1 includes reactor rain cover 10, reactor winding 11, reactor supporting construction 12, reactor electric field shielding part 13.Reactor rain cover 10 is covered in above reactor winding 11, and the branched reactor supporting construction 12 of column is supported in below reactor winding 11, and the top of reactor winding 11 and bottom periphery are equipped with reactor electric field shielding part 13.Simple in order to describe, reactor rain cover 10, reactor winding 11, reactor supporting construction 12, reactor electric field shielding part 13 are collectively referred to as reactor device after assembling.In other examples, reactor system 1 can include multiple reactor device being connected in series, and each reactor device includes reactor rain cover 10, reactor winding 11, reactor supporting construction 12, reactor electric field shielding part 13.The tool realization of telescopic pipe capital is used to be connected in series between reactor device.
Each layer of bridging coil of reactor winding 11 is wound around by multiply thin wire parallel connection, and the number of turn of multiply thin wire is identical, and circle electromotive force is identical, and rising of multiply thin wire is uniformly distributed along reactor winding top arm 110 around point.The top arm 110 of reactor winding wraps up radial multiple auxiliary to arm, and the rising of multiple thin wires is arranged in different auxiliary on arm around point.Owing to these parallel conducting wire numbers of turn are identical, circle electromotive force is identical.If rise simultaneously around, terminate simultaneously, then strand insulation does not undertake voltage, and potential difference and turn-to-turn voltage between two circles are numerically equal to circle electromotive force.In order to improve security reliability, it is possible to rising multiplex winding identical for the number of turn and axially arranged side by side around point uniformly separately, it is arranged in the different auxiliary of metal end-rack on arm (i.e. the different auxiliary of reactor winding top arm 110 to arm).Owing to metal end-rack is all auxiliary equal to the current potential of arm, and each route encloses around a difference 1/N circle (N is wire axially radical side by side), axially adjacent two wires are in the potential difference of same point by original 0 1/N increasing to circle electromotive force Et, and then turn-to-turn potential difference is but uniformly distributed to strand insulation and turn-to-turn insulation.This makes the electric field intensity of turn-to-turn insulation be reduced to original 1/N, improves reactor reliability of operation further.In order to make reactor system have more excellent antifouling, UV resistance ability, so that reactor winding 11 surface hydrophobicity is excellent, it is less susceptible to laying dust, has antifouling flash coating layer at its surface spraying, for instance RTV-II antifouling flash coating layer.
Above and below reactor winding 11, electrical connection has reactor winding top arm 110 and reactor winding bottom arm, so that reactor winding 11 and the electrical communication of external equipment and the transport of reactor winding 10 and other parts are installed on reactor winding 11, such as reactor rain cover 10, reactor supporting construction 12, reactor electric field shielding part 13.The reactor electric field shielding part 13 on reactor winding 11 top may be mounted on reactor winding top arm 110, along the circumference of reactor winding 11, forms ring-type in the outside of reactor winding 11.Reactor electric field shielding part 13 bottom reactor winding 11 can be arranged on bottom reactor winding on arm, along the circumference of reactor winding 11, forms ring-type in the outside of reactor winding 11.Reactor electric field shielding part 13 is (or claiming corona rod) in arcuation, when multiple reactor electric field shielding parts 13 form a circle in the form of a ring, can have gap each other, it is also possible to do not have gap.Preferably leave gap.Preferably, reactor rain cover 10, in rounded cap shape, has air vent at top, is embedded with rainproof grid 101 at disposed at air vent, sheds for thermal current and prevents birds from entering reactor winding 11 inside；The two ends of multiple support bars 3 are connected with the medial wall of reactor rain cover 10 and reactor winding top arm 110 respectively, so that reactor rain cover 10 is connected fixing by multiple support bars 100 with reactor winding 11 top arm 110.Referring to Fig. 2, generatrix direction along reactor rain cover 10, upper surface (or claiming outer surface) at reactor rain cover 10 is provided with reactor electric field shielding part 13, it is arcuation (or claiming corona rod), extend to the top of reactor rain cover from the bottom edge of reactor rain cover 10, in fig. 2, it is provided with 4 reactor electric field shielding parts 13 arranged in mode at equal intervals at the outer surface of reactor rain cover 10；Circumference along reactor rain cover 10, the bottom edge of reactor rain cover 10 is provided with reactor electric field shielding part 13, its quantity is multiple, multiple reactor electric field shielding parts 13 form a circle outside the bottom edge being placed in reactor rain cover 10 in the way of in the form of a ring, surround and can leave gap between multiple reactor electric field shielding parts 13 of ring-type, gap can not also be left, in order to be beneficial to installation, it is preferable that leave gap.
By arranging reactor rain cover 10 at the top of reactor winding 11, not only solve reactor winding 11 and local surfaces electric discharge and creepage trace phenomenon occur because surface rain water dirt is wet, can also prevent birds from entering reactor winding 11 internal, increase the safety and reliability of equipment.
Preferably, such as Fig. 3, branched reactor supporting construction 12 is vertically arranged, annular spread, each reactor supporting construction 12 includes superposed metal transfer bearing 121 and is positioned at the support insulator 122 of bottom, therebetween it is bolted, meet the requirement of reactor system 1 insulation against ground level and support, by arranging metal transfer bearing 121, widen the distance between bottom following metal flange and reactor, thus reducing leakage field and meeting the requirement (namely reduce the leakage field at following metal flange place and meet the requirement of metal flange place temperature) of auxiliary temperature, preferably, the material of metal transfer bearing 121 is rustless steel.Metal transfer bearing 121 its be connected above the bottom arm of reactor winding 11.Reactor electric field shielding part 13 can be set on the arm of bottom with the uniform electric field intensity at metal transfer bearing 121 place, prevent the electric discharge phenomena under high-pressure situations, the metal transfer bearing 121 of branched reactor supporting construction 12 forms ring-type, the quantity of this reactor electric field shielding part 13 is multiple, along the circumference of the multiple metal transfer bearings 121 forming ring-type, form a circle and be arranged in the outside of metal transfer bearing 121.The metalwork place being positioned at support insulator 122 top being connected with metal transfer bearing 121 is also equipped with the reactor electric field shielding part 13 electric field intensity with uniformly this place, and the circumferentially external of each metalwork is provided with reactor electric field shielding part 13.When metal transfer bearing 121 is connected with support insulator 122 bolt, this metalwork can be metal flange 1221.Namely the multiple reactor electric field shielding parts 13 bottom reactor winding 11 are arranged on support insulator 122 metal flange, and wherein support insulator 122 metal flange is positioned at the junction of metal transfer bearing 121, support insulator 122.
The electric field intensity at reactor supporting construction 12 upper metal place (i.e. metal transfer support carriers and metalwork place) that reactor electric field shielding part 13 that the top of reactor supporting construction 12 is arranged is effectively uniform, it is prevented that the electric discharge phenomena under high-pressure situations.
As shown in Figure 1, shown in Figure 5, capacitor system 2 includes capacitor electric field shielding part 20, capacitor 21, capacitor supporting construction 22.Capacitor 21 is supported by the capacitor supporting construction 22 being disposed below.Capacitor electric field shielding part 20 is then distributed in the top of capacitor 21, middle part, bottom.The top of capacitor 21, middle part, bottom are respectively provided with capacitor electric field shielding part 20, can effectively solve capacitor 21 surface rain water dirt and wet and local surfaces electric discharge and creepage trace phenomenon occur.The capacitor electric field shielding part 20 that the upper, middle and lower of capacitor 21 is provided with, its quantity is multiple, accordingly, multiple capacitor electric field shielding parts 20 form a circle outside the middle part being sheathed on the upper outside of capacitor 21, capacitor 21 in the way of in the form of a ring, the lower outside of capacitor 21, surround and can leave gap between multiple capacitor electric field shielding parts 20 of ring-type, gap can not also be left, in order to be beneficial to installation, it is preferable that leave gap.Capacitor electric field shielding part 20 is (or claiming corona rod) in arcuation.
As shown in Fig. 1, Fig. 6, lightning arrester system 3 includes spark gap electric field shielding part 30, spark gap 31 and spark gap supporting construction 32.Spark gap 31 is supported by the spark gap supporting construction 32 being disposed below.The top of spark gap 31 and the top of spark gap supporting construction 32 are equipped with spark gap electric field shielding part 30.Similar to the above, the top of spark gap 31 and spark gap supporting construction 32 is provided with spark gap electric field shielding part 30, can effectively solve spark gap 31 surface rain water dirt and wet and local surfaces electric discharge and creepage trace phenomenon occur.The spark gap electric field shielding part 30 that the top of spark gap 31 and the top of spark gap supporting construction 32 are provided with, its quantity is multiple, accordingly, multiple spark gap electric field shielding parts 30 form a circle and are sheathed on the upper outside of the upper outside of spark gap 31, spark gap supporting construction 32 in the way of in the form of a ring, surround and can leave gap between multiple spark gap electric field shielding parts 30 of ring-type, gap can not also be left, in order to be beneficial to installation, it is preferable that leave gap.Spark gap electric field shielding part 30 (or claims corona rod in arcuation.
Analyze known, reactor system of the present utility model, capacitor system, lightning arrester system are equipped with electric field shielding part, reactor system and auxiliary (such as reactor rain cover, reactor supporting construction, capacitor supporting construction, spark gap supporting construction) the too high problem of local field strength under high voltage can be solved, it is also possible to meet the requirement to voltage, CURRENT DISTRIBUTION, dielectric level and short-time current of the 750kV electrical network.
As known by the technical knowledge, this utility model can be realized by the embodiment of other essence without departing from its spirit or essential feature.Therefore, embodiment disclosed above, for each side, all it is merely illustrative, is not only.All all it is included in the utility model within the scope of this utility model or in the change being equal in scope of the present utility model.
Claims (10)
1. a dry type hollow current-limiting reactor device, it is characterized in that, including: reactor system, capacitor system, lightning arrester system, described reactor system, capacitor system, lightning arrester system connect by connecting conductor in parallel, and described reactor system, capacitor system, lightning arrester system are equipped with electric field shielding part.
2. dry type hollow current-limiting reactor device according to claim 1, it is characterized in that, described reactor system includes reactor rain cover, reactor winding, reactor supporting construction, reactor electric field shielding part, described reactor supporting construction is supported in below described reactor winding, described reactor rain cover is covered in above described reactor winding, and the top of described reactor winding and bottom are equipped with described reactor electric field shielding part.
3. dry type hollow current-limiting reactor device according to claim 2, it is characterised in that described reactor rain cover is connected fixing by multiple support bars with described reactor winding top arm.
4. dry type hollow current-limiting reactor device according to claim 2, it is characterised in that the upper surface of described reactor rain cover and edge are provided with multiple described reactor electric field shielding part.
5. dry type hollow current-limiting reactor device according to claim 2, it is characterized in that, described reactor supporting construction includes superposed metal transfer bearing, is positioned at the support insulator of bottom, described support insulator, support insulator junction be provided with described reactor electric field shielding part.
6. dry type hollow current-limiting reactor device according to claim 1, it is characterized in that, described capacitor system includes capacitor electric field shielding part, capacitor, capacitor supporting construction, described capacitor is located at above described capacitor supporting construction, and the top of described capacitor, middle part, bottom are equipped with described capacitor electric field shielding part.
7. dry type hollow current-limiting reactor device according to claim 1, it is characterized in that, described lightning arrester system includes spark gap electric field shielding part, spark gap and spark gap supporting construction, described spark gap is located at above described spark gap supporting construction, and described spark gap is provided with described spark gap electric field shielding part.
8. dry type hollow current-limiting reactor device according to claim 7, it is characterised in that the described spark gap electric field shielding part being located on described spark gap is positioned at the top of described spark gap.
9. dry type hollow current-limiting reactor device according to claim 7, it is characterised in that the top of described spark gap supporting construction also is provided with described spark gap electric field shielding part.
10. according to the arbitrary described dry type hollow current-limiting reactor device of claim 1-9, it is characterised in that described dry type hollow current-limiting reactor device is 750kV dry type hollow current-limiting reactor device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620177568.5U CN205407238U (en) | 2016-03-08 | 2016-03-08 | Hollow current limiting reactor device of dry -type |
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| CN201620177568.5U CN205407238U (en) | 2016-03-08 | 2016-03-08 | Hollow current limiting reactor device of dry -type |
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| CN205407238U true CN205407238U (en) | 2016-07-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680430A (en) * | 2016-03-08 | 2016-06-15 | 北京电力设备总厂有限公司 | Dry-type hollow current-limiting reactor device |
| CN106969798A (en) * | 2017-04-28 | 2017-07-21 | 国网河南省电力公司电力科学研究院 | Humiture monitoring device inside a kind of lightning arrester body |
-
2016
- 2016-03-08 CN CN201620177568.5U patent/CN205407238U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680430A (en) * | 2016-03-08 | 2016-06-15 | 北京电力设备总厂有限公司 | Dry-type hollow current-limiting reactor device |
| CN106969798A (en) * | 2017-04-28 | 2017-07-21 | 国网河南省电力公司电力科学研究院 | Humiture monitoring device inside a kind of lightning arrester body |
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