CN108020700A - An a kind of bleeder mechanism for transient overvoltage monitoring system - Google Patents
An a kind of bleeder mechanism for transient overvoltage monitoring system Download PDFInfo
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- CN108020700A CN108020700A CN201711220094.3A CN201711220094A CN108020700A CN 108020700 A CN108020700 A CN 108020700A CN 201711220094 A CN201711220094 A CN 201711220094A CN 108020700 A CN108020700 A CN 108020700A
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- plate
- capacitance
- bleeder mechanism
- polypropylene
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/16—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using capacitive devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16576—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing DC or AC voltage with one threshold
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The present invention provides an a kind of bleeder mechanism for transient overvoltage monitoring system, including upper plate, lower plate, upper bed-plate, lower bottom base, resistance, standard Q12 connectors and the noninductive capacitance of multiple polypropylene.The present invention is in parallel by using the noninductive capacitance of multiple polypropylene, upper and lower bottom plate is using the perfect sunk part for being bonded Up/down base of foam copper, and reduce stray inductance by the way of welding technique makes polypropylene noninductive and upper and lower bottom plate is fixed, accurate transient overvoltage waveform can be obtained, the measurement of power-frequency voltage signal can be taken into account at the same time, and further increase system and agree with degree to what wave rear responded, with working frequency height, measurement data accuracy is high, the advantages that applied widely, it is suitable for the functional requirement that intelligent grid is information-based and automates, meet the requirement of overvoltage and the development of Insulation Coordination technology.
Description
Technical field
The invention belongs to electrical engineering technical field, more particularly to a kind of once dividing for transient overvoltage monitoring system
Pressure device.
Background technology
Power grid transient process is the important characterization of operation of power networks state, for transient overvoltage in power grid (thunder and lightning and operation
Overvoltage), still lack effective measurement and monitoring means both at home and abroad.For creating equipment, the country only has some electrical power company pair
500kV systems carry out the test of switching overvoltage before formal put into operation.Usually in switching nonloaded line, main transformer, low pressure
Transient measuring is carried out when reactor or capacitor, the powered examination as new equipment.
For operational outfit, conventional protection and wave recording device can only record power-frequency overvoltage information, can not record system
Transient process.Monitoring system, intellectual monitoring and the early warning system and the real-time dynamic of power grid wide area that traffic department has used
Monitoring system supervises operation of power networks characteristic quantity mainly from the dynamic stability of whole power grid and the angle of steady stability in real time
Control, and then predict the stabilization of power grids state of future time instance, although sample frequency is of a relatively high, due to once signal acquisition from
After the ferromagnetic units of CVT, therefore high-frequency signal has and largely distorts, so can not really voltage quickly becomes in reflection system
The process of change, can not realize and carry out comprehensive monitoring to the operating status of electric system.
A bleeder mechanism for transient overvoltage monitoring system is to adapt to modern AC-DC hybrid power grid and intelligence
The functional requirement of electric network information is target, meets a kind of of overvoltage and Insulation Coordination technological development direction and new electrically sets
It is standby.
The content of the invention
The present invention is to overcome above-mentioned the deficiencies in the prior art, there is provided a kind of once dividing for transient overvoltage monitoring system
Pressure device.
The present invention provides an a kind of bleeder mechanism for transient overvoltage monitoring system, and described device includes upper bottom
Plate, lower plate, upper bed-plate, lower bottom base, resistance, standard Q12 connectors and the noninductive capacitance of multiple polypropylene；The upper plate is arranged at
The lower end of upper bed-plate, and fit closely；The lower plate is arranged at the upper end of lower bottom base, and fits closely；The resistance is set
Between upper plate and lower plate；The standard Q12 connectors are fixed on the center of lower plate；The multiple polypropylene is noninductive
Capacitance is arranged between upper plate and lower plate by way of in parallel.
Preferably, the quantity of the noninductive capacitance of the polypropylene is 18, is set respectively in a manner of annular and outer ring；
The resistance is arranged at the center of the annular capacitance.
Preferably, the capacitance quantity of the annular is 6, and the capacitance quantity of the outer ring is 12.
Preferably, the first sunk part, first sunk part are provided with the lower end half of the upper bed-plate
In be filled with foam copper, be used for realization fitting closely for upper bed-plate and upper plate.
Preferably, the second sunk part, second sunk part are provided with the upper end half of the lower bottom base
In be filled with foam copper, be used for realization fitting closely for lower bottom base and lower plate.
Preferably, described device further includes multiple supporting rods, and the supporting rod is arranged between upper plate and lower plate.
Preferably, the upper plate and lower plate use epoxy plate；Use is respectively arranged with the upper plate and lower plate
In the installation through-hole of the insertion resistance, polypropylene is noninductive capacitance and supporting rod, the resistance, polypropylene are noninductive capacitance and support
Tong Guo Han Xi are welded and fixed after the both ends of bar are respectively embedded into corresponding installation through-hole.
Preferably, multiple first through hole and multiple first half-vias are provided with the upper bed-plate, are set on the upper plate
It is equipped with multiple first screw holes and multiple first and protrudes nut；The first protrusion nut is embedded into first half-via,
The first through hole and the first screw hole are screwed.
Preferably, multiple second through holes and multiple second half-vias are provided with the lower bottom base, are set on the lower plate
It is equipped with multiple second screw holes and multiple second and protrudes nut；The second protrusion nut is embedded into second half-via,
Second through hole and the second screw hole are screwed.
Preferably, described device further includes nylon outer shell, and the nylon outer shell bottom is provided with multiple 3rd half-vias, institute
State and multiple third through-holes, the side of the upper end fitting upper plate of the nylon outer shell, institute are provided with using counterbore technology on lower bottom base
The bottom for stating nylon outer shell is fixed on lower bottom base, and the third through-hole is consolidated after being corresponded with the 3rd half-via by screw
It is fixed.
It is of the invention to be using the advantageous effects that as above technical solution is brought：The present invention is by using polypropylene without electrification
Hold in parallel, upper and lower bottom plate makes polypropylene using the sunk part of the perfect fitting Up/down base of foam copper and using welding technique
The mode that noninductive capacitance is fixed with upper and lower bottom plate reduces stray inductance, can obtain accurate transient overvoltage waveform, together
When can take into account the measurement of power-frequency voltage signal.And the present invention improves system without intermediate transformer and compensation reactor
Degree is agreed with to wave rear response.With working frequency is high, measure data precision is high, it is applied widely the advantages that, be suitable for intelligence
Energy electric network informationization and the functional requirement of automation, meet the requirement of overvoltage and the development of Insulation Coordination technology.
Brief description of the drawings
Fig. 1 is the upper plate schematic diagram of a bleeder mechanism in the present embodiment；
Fig. 2 is the lower plate schematic diagram of a bleeder mechanism in the present embodiment；
Fig. 3 is the upper bed-plate schematic diagram of a bleeder mechanism in the present embodiment；
Fig. 4 is the lower bottom base schematic diagram of a bleeder mechanism in the present embodiment；
Fig. 5 is the noninductive capacitance assembling schematic diagram of polypropylene of a bleeder mechanism in the present embodiment；
Fig. 6 is the nylon outer shell schematic diagram of a bleeder mechanism in the present embodiment；
Fig. 7 is the foam copper schematic diagram of a bleeder mechanism in the present embodiment.
Embodiment
The present invention will be described in detail with reference to the accompanying drawings and examples, but not as a limitation of the invention.
As shown in Fig. 1 to 7, for a bleeder mechanism of transient overvoltage monitoring system, including upper plate 1, lower plate
2nd, upper bed-plate 3, lower bottom base 4, resistance, standard Q12 connectors, nylon outer shell, supporting rod 5 and the noninductive capacitance 6 of multiple polypropylene.Upper bottom
Plate 1 is arranged at the lower end of upper bed-plate 3, and fits closely.Lower plate 2 is arranged at the upper end of lower bottom base 4, and fits closely.Resistance
It is arranged between upper plate 1 and lower plate 2, realizes and carry out resistors match function with cable.Standard Q12 as measurement terminal connects
Head is fixed on the center of lower plate 2.Multiple supporting rods 5 are arranged between upper plate 1 and lower plate 2, are played a supportive role.For
Stray inductance is reduced, multiple noninductive capacitances 6 of polypropylene are arranged between upper plate 1 and lower plate 2 by way of in parallel.
In a preferred embodiment, as shown in figure 5, to realize voltage divide function, one time bleeder mechanism needs capacitance
For 54uF, and each capacitance substantially 3uF, therefore, it is 18 to set the noninductive capacitance quantity of the polypropylene, and respectively within
The mode of annular and outer ring is arranged between upper plate 1 and lower plate 2.Wherein, the capacitance quantity of annular is 6, outer shroud
The capacitance quantity of shape is 12.The resistance quantity is one, is arranged at the center of the annular capacitance, is realized and electricity
Cable carries out resistors match function.
In one more preferably embodiment, as shown in Fig. 3, Fig. 4, Fig. 7, further to reduce stray inductance, on described
First sunk part 9 is set at the lower end half of base 3, and the filled and process copper 14 in the first sunk part 9, in realization
Perfection between base 3 and upper plate 1 is bonded；And the second concave part is set at the upper end half of the lower bottom base 4
Divide 12, and foam copper 14 is filled with the second sunk part 12, realize that the perfection between lower bottom base 4 and lower plate 2 is bonded.
In one more preferably embodiment, as shown in Figure 1 and Figure 2, the upper plate 1 and lower plate 2 use epoxy plate,
Epoxy plate has intensity big, good toughness, waterproof and corrosion-resistant, can work normally in a humidity environment.
Further to reduce stray inductance, it is separately provided for being embedded in the electricity on the upper plate 1 and lower plate 2
The both ends difference of the installation through-hole of resistance, polypropylene is noninductive capacitance and supporting rod, the resistance, polypropylene are noninductive capacitance and supporting rod
Tong Guo Han Xi are welded and fixed after embedded corresponding installation through-hole.
In one more preferably embodiment, as shown in Figure 3 and Figure 5, to realize that upper bed-plate 3 is preferably close with upper plate 1
It is bonded, is provided with multiple first through hole 7 and multiple first half-vias 8 on the upper bed-plate 3, is provided with the upper plate 1 more
A first screw hole 16 and multiple first protrudes nut 17；The first protrusion nut 17 is embedded into first half-via 8,
7 and first screw hole 16 of first through hole is screwed.
In one more preferably embodiment, as shown in Figure 4 and Figure 5, to realize that lower bottom base 4 is preferably close with lower plate 2
It is bonded, is provided with multiple second through holes 10 and multiple second half-vias 11 on the lower bottom base 4, is provided with the lower plate 2
Multiple second screw holes 18 and multiple second protrude nut 19；The second protrusion nut 19 is embedded into second half-via 11
Interior, 10 and second screw hole 18 of the second through hole is screwed.
In a preferred embodiment, as shown in Figure 4 and Figure 6, the nylon outer shell bottom is provided with multiple 3 half
Through hole 15, is provided with multiple third through-holes 13, the upper bottom of upper end fitting of the nylon outer shell on the lower bottom base 4 using counterbore technology
The side of plate 1, the bottom of the nylon outer shell are fixed on lower bottom base 4, and 13 and the 3rd half-via 15 of third through-hole is one by one
It is screwed after correspondence.By using counterbore technology perforate on lower bottom base, it can to install when screw is fixed and go to the bottom
The lower end of seat fixes bottom in screw and successively adds gasket, shrapnel and two nuts without projection, is allowed to fixed effect
More preferably, simultaneously it is bonded after realizing the side of nylon outer shell fitting upper plate with the perfection of lower plate counterbore screw.
The present invention is used for a bleeder mechanism of transient overvoltage monitoring system, by using the noninductive capacitance of polypropylene simultaneously
Connection, upper and lower bottom plate make polypropylene noninductive using the sunk part of the perfect fitting Up/down base of foam copper and using welding technique
The mode that capacitance is fixed with upper and lower bottom plate reduces stray inductance, can obtain accurate transient overvoltage waveform, while energy
Enough take into account the measurement of power-frequency voltage signal.And the present invention improves system to ripple without intermediate transformer and compensation reactor
What hangover was answered agrees with degree.With working frequency is high, measure data precision is high, it is applied widely the advantages that, be suitable for intelligent electricity
The information-based functional requirement with automation of net, meets the requirement of overvoltage and the development of Insulation Coordination technology.
The foregoing is merely presently preferred embodiments of the present invention, therefore can not be interpreted as limitation of the scope of the invention,
It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, it can also make some
Modification and improvement, these belong to protection scope of the present invention.
Claims (10)
- An a kind of 1. bleeder mechanism for transient overvoltage monitoring system, it is characterised in that：Described device include upper plate, Lower plate, upper bed-plate, lower bottom base, resistance, standard Q12 connectors and the noninductive capacitance of multiple polypropylene；The upper plate is arranged at the lower end of upper bed-plate, and fits closely；The lower plate is arranged at the upper end of lower bottom base, and fits closely；The resistance is arranged between upper plate and lower plate；The standard Q12 connectors are fixed on the center of lower plate；The multiple noninductive capacitance of polypropylene is arranged between upper plate and lower plate by way of in parallel.
- A 2. bleeder mechanism according to claim 1, it is characterised in that：Preferably,The quantity of the noninductive capacitance of polypropylene is 18, is set respectively in a manner of annular and outer ring；The resistance is set It is placed in the center of the annular capacitance.
- A 3. bleeder mechanism according to claim 2, it is characterised in that：The capacitance quantity of the annular is 6, and the capacitance quantity of the outer ring is 12.
- A 4. bleeder mechanism according to claim 1, it is characterised in that：The first sunk part is provided with the lower end half of the upper bed-plate, foam is filled with first sunk part Copper, is used for realization fitting closely for upper bed-plate and upper plate.
- A 5. bleeder mechanism according to claim 1, it is characterised in that：The second sunk part is provided with the upper end half of the lower bottom base, foam is filled with second sunk part Copper, is used for realization fitting closely for lower bottom base and lower plate.
- A 6. bleeder mechanism according to claim 2, it is characterised in that：Described device further includes multiple supporting rods, and the supporting rod is arranged between upper plate and lower plate.
- A 7. bleeder mechanism according to claim 6, it is characterised in that：The upper plate and lower plate use epoxy plate；It is separately provided for being embedded in the electricity on the upper plate and lower plate The both ends difference of the installation through-hole of resistance, polypropylene is noninductive capacitance and supporting rod, the resistance, polypropylene are noninductive capacitance and supporting rod Tong Guo Han Xi are welded and fixed after embedded corresponding installation through-hole.
- A 8. bleeder mechanism according to claim 4, it is characterised in that：Multiple first through hole and multiple first half-vias are provided with the upper bed-plate, multiple first are provided with the upper plate Screw hole and multiple first protrudes nut；The first protrusion nut is embedded into first half-via, the first through hole It is screwed with the first screw hole.
- A 9. bleeder mechanism according to claim 5, it is characterised in that：Multiple second through holes and multiple second half-vias are provided with the lower bottom base, multiple second are provided with the lower plate Screw hole and multiple second protrudes nut；The second protrusion nut is embedded into second half-via, second through hole It is screwed with the second screw hole.
- A 10. bleeder mechanism according to claim 1, it is characterised in that：Described device further includes nylon outer shell, and the nylon outer shell bottom is provided with multiple 3rd half-vias, on the lower bottom base Multiple third through-holes, the side of the upper end fitting upper plate of the nylon outer shell, the nylon outer shell are provided with using counterbore technology Bottom be fixed on lower bottom base, the third through-hole and the 3rd half-via are screwed after corresponding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711220094.3A CN108020700A (en) | 2017-11-28 | 2017-11-28 | An a kind of bleeder mechanism for transient overvoltage monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711220094.3A CN108020700A (en) | 2017-11-28 | 2017-11-28 | An a kind of bleeder mechanism for transient overvoltage monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108020700A true CN108020700A (en) | 2018-05-11 |
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ID=62077345
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711220094.3A Pending CN108020700A (en) | 2017-11-28 | 2017-11-28 | An a kind of bleeder mechanism for transient overvoltage monitoring system |
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