CN206489206U - A kind of can type capacitor voltage mutual inductor for high pressure GIS - Google Patents
A kind of can type capacitor voltage mutual inductor for high pressure GIS Download PDFInfo
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- CN206489206U CN206489206U CN201621492576.5U CN201621492576U CN206489206U CN 206489206 U CN206489206 U CN 206489206U CN 201621492576 U CN201621492576 U CN 201621492576U CN 206489206 U CN206489206 U CN 206489206U
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Abstract
The utility model discloses a kind of can type capacitor voltage mutual inductor for high pressure GIS, including sealed shell of tank, high-field electrode, middle piezoelectricity pole, outlet casing tube, electromagnetic unit, insulated support, insulating part, bus, two equipotential metal pitmans and metal fixing plate.Two equipotentials metal pitman is respectively the first equipotential metal pitman and the second equipotential metal pitman.The utility model is simple in construction, and cost is low, stable insulation, improves the security reliability of power network；Capacitive divider is located at tank interior, do not influenceed by extraneous approach effect, the optional scope of rated capacitance of capacitive divider is big, be not in the phenomenon of ferromagnetic resonance in electric online operation, do not influenceed by kindred effect, also error characteristics are not influenceed by filthy and relative humidity, error characteristics are stable, improves the accuracy of high-voltage fence metering.
Description
Technical field
The utility model is related to a kind of voltage transformer, more particularly to a kind of can type capacitor voltage for high pressure GIS
Transformer.
Background technology
Gas-insulating and fully-enclosed combined electrical apparatus (Gas Insulated Switchgear, GIS) includes breaker, kept apart
Pass, earthed switch, transformer, arrester, bus and outlet terminal etc., using excellent lithium of insulating properties and arc extinction performance
Sulphur (SF6) gas is sealed in grounded metal cylinder as insulation and arc-extinguishing medium, and by all component of high voltage electrical apparatus.At present,
500KV and following voltage class GIS is substantially electromagnetic type structure voltage transformer (TV) with voltage transformer, and it is maximum excellent
Point is that error characteristics are stable.But, with the raising of voltage class, electromagnetic type knot when 500KV aboves GIS uses TV
The manufacture difficulty of structure is than larger, and insulating properties are difficult to ensure that, and complicated, and cost is high.
Utility model content
The purpose of this utility model is by a kind of can type capacitor voltage mutual inductor for high pressure GIS, to solve
The problem of background section above is mentioned.
For up to this purpose, the utility model uses following technical scheme：
A kind of can type capacitor voltage mutual inductor for high pressure GIS, it includes sealed shell of tank, high-field electrode, middle piezoelectricity
Pole, outlet casing tube, electromagnetic unit, insulated support, insulating part, bus, two equipotential metal pitmans and metal are fixed
Plate；Two equipotentials metal pitman is respectively the first equipotential metal pitman and the second equipotential metal pitman；
The outlet casing tube is located at one end of the first equipotential metal pitman, outside the sealed shell of tank；Described
First-class noble potential metal pitman and the second equipotential metal pitman are fixed on the sealed shell of tank by the insulated support
Both sides up and down；The insulating part is fixed on the sealed shell of tank center of inside position, and the high-field electrode is fixed on the insulation
On part, it is enclosed on outside the bus；The high-field electrode is connected with the bus by the second equipotential metal pitman；Institute
Middle piezoelectricity pole is stated installed in the sealed shell of tank inwall, is fixed by insulated support；Between the high-field electrode and middle piezoelectricity pole
High voltage arm capacitor is formed, pressure arm electric capacity, high voltage arm capacitor and middle pressure arm electric capacity structure in being formed between middle piezoelectricity pole and sealed shell of tank
Into capacitive divider；The metal fixing plate is installed additional on the outside of the sealed shell of tank；The electromagnetic unit, which is arranged on, carries outlet
On the sealed shell of tank outer wall of sleeve pipe.
Especially, it is embedded with spring inside the insulated support；The high-field electrode is cylindrical structural.
Especially, the outlet casing tube uses epoxy glass fiber winding pipe.
The utility model proposes the can type capacitor voltage mutual inductor for high pressure GIS it is simple in construction, cost is low, insulation
Performance is stable, improves the security reliability of power network；Capacitive divider is located at tank interior in the utility model, is not faced by the external world
Nearly effects, the optional scope of rated capacitance of capacitive divider is big, is not in showing for ferromagnetic resonance in electric online operation
As not influenceed, also error characteristics not influenceed by filthy and relative humidity by kindred effect, error characteristics are stable, improve
The accuracy of high-voltage fence metering.
Brief description of the drawings
The can type capacitor voltage mutual inductor structure chart for high pressure GIS that Fig. 1 provides for the utility model embodiment.
Embodiment
For the ease of understanding the utility model, the utility model is more fully retouched below with reference to relevant drawings
State.Preferred embodiment of the present utility model is given in accompanying drawing.But, the utility model can come real in many different forms
It is existing, however it is not limited to embodiment described herein.On the contrary, the purpose for providing these embodiments is made to public affairs of the present utility model
Open the more thorough comprehensive of content understanding.It should be noted that when an element is considered as " connection " another element, it can
To be directly to another element or may be simultaneously present centering elements.Unless otherwise defined, institute used herein
Some technologies and scientific terminology are identical with belonging to the implication that those skilled in the art of the present utility model are generally understood that.Herein
In term used in the description of the present utility model be intended merely to describe specific embodiment purpose, it is not intended that in
Limit the utility model.Term as used herein " and/or " include one or more related Listed Items arbitrary and
All combinations.
It refer to shown in Fig. 1, the can type capacitor voltage for high pressure GIS that Fig. 1 provides for the utility model embodiment
Transformer structure chart.
Can type capacitor voltage mutual inductor in the present embodiment for high pressure GIS specifically includes sealed shell of tank 1, high-field electrode
2nd, middle piezoelectricity pole 3, outlet casing tube 4, electromagnetic unit 5, insulated support 6, insulating part 7, bus 8, two equipotential metal connections
Rod (9,10) and metal fixing plate 11；Two equipotential metals pitman (9,10) is respectively that the first equipotential metal connects
Take over the baton 9 and the second equipotential metal pitman 10.
The outlet casing tube 4 is located at one end of the first equipotential metal pitman 9 in the present embodiment, installed in institute
State outside sealed shell of tank 1；The first equipotential metal pitman 9 and the second equipotential metal pitman 10 pass through the insulation
Support member 6 is fixed on the sealed shell of tank, and about 1 both sides；The insulating part 7 is fixed on the center of inside of sealed shell of tank 1 position
Put, the high-field electrode 2 is fixed on the insulating part 7, be enclosed on outside the bus 8；The high-field electrode 2 and the bus 8
Connected by the second equipotential metal pitman 10；Medium pressure electrode 3 is arranged on the inwall of sealed shell of tank 1, by exhausted
Edge support member 6 is fixed；High voltage arm capacitor, middle piezoelectricity pole 3 and sealed shell of tank 1 are formed between the high-field electrode 2 and middle piezoelectricity pole 3
Between formed in pressure arm electric capacity, high voltage arm capacitor and middle pressure arm electric capacity constitute capacitive divider；The outside of sealed shell of tank 1 adds
Fill the metal fixing plate 11；The electromagnetic unit 5 is arranged on the outer wall of sealed shell of tank 1 with outlet casing tube 4.
Spring is embedded with inside the insulated support 6, when 8 fever expansion of current carrying bus, the spring will absorb one
Divide mechanical stress, keep the relative position of high-field electrode 2 constant.
Specifically, the sealed shell of tank 1 is fabricated by by stainless steel material, its intensity is high, corrosion-resistant.Tank body element is assembled
Before, need first cleansing tissue or dust catcher to clear up the inwall of sealed shell of tank 1 and interface, the interface of sealed shell of tank 1 by flange face,
Seal groove and sealing ring composition, it is ensured that the overall tightness of tank body.The bus 8 uses independent aluminum pipe conductor, without straight
Borrow GIS pipelines current carrying bus 8 is connect, reduce influences the intrinsic standoff ratio of divider to change because generating heat GIS pipelines current carrying bus 8.
The high-field electrode 2 is on cylindrical structural, the insulating part 7 for being directly sleeved on the center of inside of sealed shell of tank 1.Medium pressure electrode
3 equally use aluminum pipe, are fixed between middle piezoelectricity pole 3 and the internal face of sealed shell of tank 1 with several insulated supports 6.
The epoxy glass fiber winding pipe of outlet casing tube 4, its chemical property is good, tension compressive strength and bending strength
Height, wall thickness is small, and radial insulation is reliable.The electromagnetic unit 5 is the structure of conventional voltage transformer electromagnetic unit 5, by middle transformation
Device, compensation reactor, protection device and damper etc. are constituted.Dipping transformer oil in electromagnetic unit 5, fuel tank sealing, pasta from
Case lid retains certain space, compensates and uses as oil volume breathing.The equipotential metal pitman uses 20*8 galvanized steel bar,
Its main function is connection high-field electrode 2 and bus 8, is at equipotential, and two equipotential metal pitmans pass through insulation
Support member 6 is fixed on both sides above and below tank body, and equipotential bonding should carry out galvanizing processing with bolt, packing ring and nut etc..It is described
Metal fixing plate 11 uses stainless steel, and through epoxy resin outer cladding tank body, Bottom ground, its surface is in normal work
It is not charged tangibly, and phenomenon of arc discharge will not be produced under the conditions of harsh climate, improve security and the longevity of transformer
Life.
Compared with conventional electromagnetic voltage transformer, pot type CVT capacitive divider major insulation is used in the utility model
Be SF6 gases, divider is in tank interior, is not influenceed by extraneous approach effect, the rated capacitance of capacitive divider can
With the very little of choosing.High voltage arm capacitor is coaxial clyinder structure, is made up of multiple middle voltage capacitances, and effect is point for adjusting divider
Pressure ratio.In addition, a bus is without GIS pipelines current carrying bus is directly borrowed as high-field electrode, this all consideration is because of one
Secondary bus heating can increase Primary Conductor electrode expansion amount so that high voltage arm capacitor increase, cause the intrinsic standoff ratio of divider to change
Amount is increased, and in order to reduce the influence of bus heating, one time bus is separately electrically connected with wire.
The technical solution of the utility model is simple in construction, and cost is low, stable insulation, improves the safe and reliable of power network
Property；Capacitive divider is located at tank interior in the utility model, is not influenceed by extraneous approach effect, the specified electricity of capacitive divider
The optional scope of capacity is big, is not in the phenomenon of ferromagnetic resonance in electric online operation, is not influenceed by kindred effect, also not by filth
Influence with relative humidity to error characteristics, error characteristics are stable, improve the accuracy of high-voltage fence metering.
Note, above are only preferred embodiment of the present utility model and institute's application technology principle.Those skilled in the art's meeting
Understand, the utility model is not limited to specific embodiment described here, can carried out for a person skilled in the art various bright
Aobvious change, readjust and substitute without departing from protection domain of the present utility model.Therefore, although pass through above example
The utility model is described in further detail, but the utility model is not limited only to above example, is not departing from
In the case that the utility model is conceived, other more equivalent embodiments can also be included, and scope of the present utility model is by appended
Right determine.
Claims (3)
1. a kind of can type capacitor voltage mutual inductor for high pressure GIS, it is characterised in that including sealed shell of tank, high-field electrode,
Middle piezoelectricity pole, outlet casing tube, electromagnetic unit, insulated support, insulating part, bus, two equipotential metal pitmans and gold
Belong to fixed plate；Two equipotentials metal pitman is respectively that the first equipotential metal pitman and the second equipotential metal connect
Take over the baton；The outlet casing tube is located at one end of the first equipotential metal pitman, outside the sealed shell of tank；Institute
State the first equipotential metal pitman and the second equipotential metal pitman is fixed on the sealing by the insulated support
Both sides above and below tank body；The insulating part is fixed on the sealed shell of tank center of inside position, and the high-field electrode is fixed on described
On insulating part, it is enclosed on outside the bus；The high-field electrode is connected with the bus by the second equipotential metal pitman
Connect；Medium pressure electrode is arranged on the sealed shell of tank inwall, is fixed by insulated support；The high-field electrode and middle piezoelectricity pole
Between form high voltage arm capacitor, between middle piezoelectricity pole and sealed shell of tank formed in pressure arm electric capacity, high voltage arm capacitor and middle pressure arm electricity
Hold and constitute capacitive divider；The metal fixing plate is installed additional on the outside of the sealed shell of tank；The electromagnetic unit is arranged on and carried
On the sealed shell of tank outer wall of outlet casing tube.
2. the can type capacitor voltage mutual inductor according to claim 1 for high pressure GIS, it is characterised in that described exhausted
Spring is embedded with inside edge support member；The high-field electrode is cylindrical structural.
3. the can type capacitor voltage mutual inductor for high pressure GIS according to any one of claim 1 or 2, its feature exists
In the outlet casing tube uses epoxy glass fiber winding pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621492576.5U CN206489206U (en) | 2016-12-30 | 2016-12-30 | A kind of can type capacitor voltage mutual inductor for high pressure GIS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621492576.5U CN206489206U (en) | 2016-12-30 | 2016-12-30 | A kind of can type capacitor voltage mutual inductor for high pressure GIS |
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| CN206489206U true CN206489206U (en) | 2017-09-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771464A (en) * | 2016-12-30 | 2017-05-31 | 无锡市锡容电力电器有限公司 | A kind of can type capacitor voltage mutual inductor for high pressure GIS |
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2016
- 2016-12-30 CN CN201621492576.5U patent/CN206489206U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771464A (en) * | 2016-12-30 | 2017-05-31 | 无锡市锡容电力电器有限公司 | A kind of can type capacitor voltage mutual inductor for high pressure GIS |
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