CN109038610A - Tunable capacitor sensor with miniature multipath switch on-off - Google Patents
Tunable capacitor sensor with miniature multipath switch on-off Download PDFInfo
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- CN109038610A CN109038610A CN201810962386.2A CN201810962386A CN109038610A CN 109038610 A CN109038610 A CN 109038610A CN 201810962386 A CN201810962386 A CN 201810962386A CN 109038610 A CN109038610 A CN 109038610A
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- capacitor
- voltage
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- capacitance
- partial pressure
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
- H02J3/1828—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepwise control, the possibility of switching in or out the entire compensating arrangement not being considered as stepwise control
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
Tunable capacitor sensor that the invention discloses a kind of applied to High-voltage Switchgear Industry, with miniature multipath switch on-off, connects including the high-voltage capacitor cast in pole and the high-voltage capacitor with adjustable partial pressure capacitor.Three phase mains is connected in vacuum extinction room and the single phase input of three phase mains is grounded after high-voltage capacitor is connected with adjustable partial pressure capacitor and the output end of vacuum interrupter is grounded after high-voltage capacitor is connected with adjustable partial pressure capacitor, the adjustable partial pressure capacitor is provided with adjusting circuit, adjusting circuit includes miniature multipath toggle switch, capacitance matrix etc., and the single switch output end of miniature multipath toggle switch is connected with the single capacitor of capacitance matrix.The present invention solves in existing High-voltage Switchgear Industry that capacitance sensor cannot effectively adjust the technical deficiency of capacitance, simply and easily compensates the difference as caused by batch, load, capacitance accuracy etc., stability in use and strong applicability, practicability is good.
Description
Technical field
The invention belongs to technical field of capacitance sensor, and in particular to it is a kind of applied to High-voltage Switchgear Industry, have it is micro-
The tunable capacitor sensor of type variable connector switching.
Background technique
Pressing field (3kV ~ 110kV) common vacuum switchgear in electric system now, (including indoor complete switch is set
Standby and outdoor pole top switch etc.) core cell be vacuum circuit breaker.The core component of vacuum circuit breaker is pole, it is adopted
It is with epoxy resin that vacuum interrupter, upper and lower wire outlet seat etc. is integrated poured in one with APG technology.Switchgear generallys use
Voltage transformer or voltage sensor measure electric system primary voltage value, if conventional scheme is handle using voltage sensor
One high-voltage capacitance is cast in pole, then is connected by a voltage-dividing capacitor with high-voltage capacitance, and voltage is passed through
Principle directly measures voltage value using DTU/FTU/ relay protection/voltmeter etc. on voltage-dividing capacitor, is converted into primary voltage
Value.
Since capacitance becomes after the precision of various factors such as temperature, capacitor itself, the distribution capacity of connecting cable, casting
Change, connection load capacity size, production batch difference etc. influence, and the voltage value surveyed on voltage-dividing capacitor is often counted with theory
There are deviation, this deviation influences each other and is difficult prediction calculation value.The method for now in industry solving the problems, such as this is high pressure
Capacitor and switch pour be poured in after, measure practical capacitance.Required voltage-dividing capacitor value is calculated according to practical capacitance, then in batches
Secondary production voltage-dividing capacitor.Even same class product is needed due to the difference of high-voltage capacitance there are many different derided capacitors
Device matches.Not only the production cycle is long in this way, and complex procedures, is unable to satisfy batch production.In addition in live operational process, such as
The damage of fruit voltage-dividing capacitor, then require to look up original record to determine voltage-dividing capacitor value, the suitable derided capacitors of new production of laying equal stress on
Device is to reprocess, and the time greatly increases after sale, this is unable to satisfy current electric system for power supply reliability requirement.Therefore at present
Definite value voltage-dividing capacitor compensation principle be unable to satisfy actual requirement, need it is a kind of it is simple and reliable, capacitance can be adjusted in real time
Voltage-dividing capacitor solve this problem.
Summary of the invention
The object of the present invention is to provide a kind of tunable capacitor sensors with miniature multipath switch on-off, it is intended to solve existing
There is capacitance sensor in technology that cannot effectively adjust the technical deficiency of capacitance.
The technical solution for realizing the object of the invention is a kind of tunable capacitor sensor with miniature multipath switch on-off, packet
It includes the high-voltage capacitor cast in pole and the high-voltage capacitor is connected with adjustable partial pressure capacitor, described solid
Vacuum interrupter, upper and lower wire outlet seat are provided in sealed pole, one end of the high-voltage capacitor is connected another with HV Terminal
End is connected with adjustable partial pressure capacitor, and three phase mains is connected in vacuum extinction room and the single phase input of three phase mains is through excessively high
Piezoelectric capsule is grounded after connecting with voltage-dividing capacitor and the output end of vacuum interrupter is by high-voltage capacitor and voltage-dividing capacitor
Be grounded after series connection, the adjustable partial pressure capacitor is provided with adjusting circuit, the adjusting circuit include miniature multipath toggle switch,
Capacitance matrix, the single switch output end of the miniature multipath toggle switch is connected with the single capacitor of capacitance matrix, described micro-
One input terminal of type multichannel toggle switch is even connected with high-voltage capacitor, another input terminal is connected in measuring instrumentss, institute
The output end ground connection and another output for stating capacitance matrix are connected in measuring instrumentss.
One small-sized multichannel toggle switch, controls a capacitance matrix, is needed by the capacitor of switching different number
Capacitance；
Warning light circuit is also parallel on the series circuit of high-voltage capacitor and voltage-dividing capacitor.
The warning light circuit includes concatenated LED warning indication lamp and alternating-current bidirectional protection diode.
The pole is epoxy resin body.
The present invention has the effect of positive: of the invention is simple and reliable for structure, and miniature multipath fling-cut switch is used to cooperate
One capacitance matrix obtains corresponding required capacitance by the capacitor of switching different number, to cooperate high-voltage capacitance realization to take electricity
The demand for pressing signal, the technical deficiency of capacitance cannot effectively be adjusted by solving High-voltage Switchgear Industry capacitance sensor, while can be with
It produces high-voltage electricity in batches with adjustable partial pressure capacitor, substantially increases the efficiency of processing, reduce the difficulty of processing, use
Stability and strong applicability, practicability are good.
Detailed description of the invention
In order to make the content of the present invention more clearly understood, right below according to specific embodiment and in conjunction with attached drawing
The present invention is described in further detail, in which:
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the capacitance sensor schematic diagram of high-voltage switch of the present invention；
Fig. 3 is the schematic diagram that adjustable partial pressure capacitor adjusts circuit in the present invention.
Specific embodiment
(embodiment 1)
Fig. 1 to Fig. 3 shows a kind of specific embodiment of the invention, wherein Fig. 1 is the structural diagram of the present invention；Fig. 2 is
The capacitance sensor schematic diagram of high-voltage switch of the present invention；Fig. 3 is the principle that adjustable partial pressure capacitor adjusts circuit in the present invention
Figure.
See Fig. 1 to Fig. 3, a kind of tunable capacitor sensor with miniature multipath switch on-off, including pole, casts
In two admittedly interior high-voltage capacitors 2, vacuum interrupter 8, upper and lower wire outlet seat 9, the height are provided in the pole
One end of piezoelectric capsule other end that is connected with HV Terminal is connected with adjustable partial pressure capacitor 3, and three phase mains is connected to vacuum
In arc-chutes and the single phase input of three phase mains is grounded after high-voltage capacitor is connected with adjustable partial pressure capacitor 3 and vacuum
The output end of arc-chutes 8 is grounded after high-voltage capacitor is connected with voltage-dividing capacitor 3, and the adjustable partial pressure capacitor 3 is arranged
There is an adjusting circuit, the adjusting circuit includes small-sized multichannel toggle switch 4, capacitance matrix 5, the small-sized multichannel toggle switch
Single switch output end is connected with the single capacitor of capacitance matrix, the input terminal and high pressure of the small-sized multichannel toggle switch
Capacitor 2 is connected, another input terminal is connected in measuring instrumentss, and an output end of the capacitance matrix is grounded and another
Output end is connected in measuring instrumentss.
One small-sized multichannel toggle switch 4, controls a capacitance matrix 5, is needed by the capacitor of switching different number
The capacitance wanted；
Warning light circuit is also parallel on the series circuit of high-voltage capacitor and voltage-dividing capacitor.
The warning light circuit includes concatenated LED warning indication lamp 7 and alternating-current bidirectional protection diode 6.
In Fig. 1, the core cell pole of electric system vacuum circuit breaker, it uses APG technology, uses epoxy resin
Equal materials the whole sealing such as vacuum interrupter, upper and lower wire outlet seat, high-voltage capacitance together.High-voltage capacitor is cast in sealing
In pole, one end is connected with high-pressure section, one end and voltage-dividing capacitor series connection.
It is high-voltage switch gear capacitance sensor schematic diagram in Fig. 2, A, B, C are Three-phase Power Systems phase sequence, and vacuum interrupter is main
Wanting function is point, closes electric current, high-voltage capacitor 2, voltage-dividing capacitor 3.2 and 3 be series relationship, because under same frequency, capacitor holds
It is anti-to be inversely proportional with capacitance, and voltage is directly proportional to capacitive reactance, therefore voltage is inversely proportional with capacitance, differs 3 capacitances greater than 2(
1000 times or more), guarantee most voltages point in this way in high-voltage capacitance 2, small voltage point is on voltage-dividing capacitor 3
Directly pass through the 3 both end voltage values of device measurings such as DTU/FTU/ relay protection/voltmeter.6 be bidirectional protective diode, prevents height
Voltage seals in low tension loop, shields.7 be alarm lamp, lights sending alarm signal after protection diode breakdown.
As shown in figure 3,3 functions in Fig. 2 are realized by the entire circuit in Fig. 3.Its core is using a small-sized multichannel
Toggle switch 4 controls a capacitance matrix 5, the capacitance needed by the capacitor of switching different number.Each capacitor's capacity
Depending on required total capacitance value, the present embodiment has selected 5nF, 1nF, 0.2nF, 0.1nF, so adjustable model of total capacitance value respectively
It encloses are as follows: 5 ~ 20nF, minimum adjusted value are 0.1nF.In practical application, such as apply high pressure in 1 high pressure entry/exit terminal of pole
Electricity can measure branch pressure voltage value in voltage-dividing capacitor 3, if its value is less than normal, then cut off promise using small-sized multichannel toggle switch 4
Dry capacitor increases its branch pressure voltage；If voltage is bigger than normal, then the dry capacitor of promise is put into, reduces its partial pressure；Pin1 and Pin2 are
Input terminal, 2 high-voltage capacitance of map interlinking, 2 lower end, one connects measuring instrumentss, and Pin3 and Pin4 are output end, and one is grounded, and one
Connect measuring instrumentss.
In practical invention, since miniature requirement does entire circuit using small-sized toggle switch and ceramic paster capacitor
At one piece of PCB circuit board.Overvoltage damages product and the person in order to prevent simultaneously, needs alternating-current bidirectional protection in parallel
Diode 6, a LED alarm lamp 7 of connecting after diode.It is then inserted into and out of line interface using standard aviation.PCB circuit board
After the completion of welding, overall package is into special metal shell, and there are the openings of toggle switch for shell, and direct switching is facilitated to stir
Switch.
As described above, a kind of tunable capacitor sensor, capacitance required for adjustment that can be simple and reliable compensate high-voltage switch gear
Pole capacitance sensor scheme is due to capacitance after the precision of temperature, capacitor itself, the distribution capacity of connecting cable, casting
The influence of the various factors such as variation, connection payload size, production batch difference, this is the key that product can be using institute in engineering
And value of the invention where.
Of the invention is simple and reliable for structure, uses miniature multipath fling-cut switch with a capacitance matrix is unified, passes through switching
The capacitor of different number obtains corresponding required capacitance, to cooperate high-voltage capacitance realization to take the demand of voltage signal, solves height
Capacitance sensor cannot effectively adjust the technical deficiency of capacitance in the industry that compresses switch, at the same can make high-voltage switch gear pole with
Adjustable partial pressure capacitor produces in batches, substantially increases the efficiency of processing, reduces the difficulty of processing, stability in use and suitable
Strong with property, practicability is good.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.And these
Belong to the obvious changes or variations that connotation of the invention is extended out and still falls within protection scope of the present invention.
Claims (5)
1. a kind of tunable capacitor sensor with miniature multipath switch on-off, including the high-voltage capacitor that casts in admittedly and
The high-voltage capacitor is connected with adjustable partial pressure capacitor, and vacuum interrupter, upper and lower outlet are provided in the pole
Seat, one end of high-voltage capacitor other end that is connected with HV Terminal are connected with adjustable partial pressure capacitor, and feature exists
In: three phase mains is connected in vacuum extinction room and the single phase input of three phase mains is by high-voltage capacitor and voltage-dividing capacitor
The ground connection and output end of vacuum interrupter is grounded after high-voltage capacitor is connected with adjustable partial pressure capacitor after series connection, it is described can
Voltage-dividing capacitor is adjusted to be provided with adjusting circuit, the adjusting circuit includes small-sized multichannel toggle switch, capacitance matrix, described small-sized
The single switch output end of multichannel toggle switch is connected with the single capacitor of capacitance matrix, and the one of the small-sized multichannel toggle switch
A input terminal is connected with high-voltage capacitor with voltage-dividing capacitor, another input terminal is connected in measuring instrumentss, the capacitor square
One output end of battle array is grounded and another output is connected in measuring instrumentss.
2. the tunable capacitor sensor according to claim 1 with miniature multipath switch on-off, it is characterised in that: one
Miniature multipath toggle switch controls a capacitance matrix, the capacitance needed by the capacitor of switching different number.
3. the tunable capacitor sensor according to claim 1 with miniature multipath switch on-off, it is characterised in that: in height
Warning light circuit is also parallel on the series circuit of piezoelectric capsule and voltage-dividing capacitor.
4. the tunable capacitor sensor according to claim 3 with miniature multipath switch on-off, it is characterised in that: described
Warning light circuit includes concatenated LED warning indication lamp and alternating-current bidirectional protection diode.
5. the tunable capacitor sensor according to claim 1 with miniature multipath switch on-off, it is characterised in that: described
Pole is epoxy resin body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810962386.2A CN109038610A (en) | 2018-08-22 | 2018-08-22 | Tunable capacitor sensor with miniature multipath switch on-off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810962386.2A CN109038610A (en) | 2018-08-22 | 2018-08-22 | Tunable capacitor sensor with miniature multipath switch on-off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109038610A true CN109038610A (en) | 2018-12-18 |
Family
ID=64628003
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810962386.2A Pending CN109038610A (en) | 2018-08-22 | 2018-08-22 | Tunable capacitor sensor with miniature multipath switch on-off |
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Citations (10)
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|---|---|---|---|---|
| CN202678191U (en) * | 2012-05-17 | 2013-01-16 | 芜湖明远电力设备制造有限公司 | An intellectualized high-voltage vacuum circuit breaker |
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| CN205920930U (en) * | 2016-08-31 | 2017-02-01 | 华仪电气股份有限公司 | High voltage circuit breaker's solid utmost point post that seals |
| CN106771505A (en) * | 2017-02-28 | 2017-05-31 | 上海交通大学 | Single-phase overhead transmission line of electricity phase voltage method for self-calibrating based on series capacitance |
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2018
- 2018-08-22 CN CN201810962386.2A patent/CN109038610A/en active Pending
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| US20160069937A1 (en) * | 2013-05-02 | 2016-03-10 | Awesense Wireless Inc. | Voltage sensing unit for sensing voltage of high-power lines using a single-contact point and method of use thereof |
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