CN103078309B - Transmission line moment ripple overvoltage buffer unit and way to play for time - Google Patents
Transmission line moment ripple overvoltage buffer unit and way to play for time Download PDFInfo
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- CN103078309B CN103078309B CN201310003661.5A CN201310003661A CN103078309B CN 103078309 B CN103078309 B CN 103078309B CN 201310003661 A CN201310003661 A CN 201310003661A CN 103078309 B CN103078309 B CN 103078309B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 35
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 124
- 239000011787 zinc oxide Substances 0.000 claims abstract description 62
- 238000007599 discharging Methods 0.000 claims abstract description 54
- 238000004146 energy storage Methods 0.000 claims abstract description 19
- 239000003990 capacitor Substances 0.000 claims abstract description 18
- 239000012212 insulator Substances 0.000 claims abstract description 6
- 230000032683 aging Effects 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 8
- 238000002955 isolation Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 229920000260 silastic Polymers 0.000 claims description 5
- 230000004224 protection Effects 0.000 abstract description 10
- 230000007774 longterm Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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Abstract
The present invention relates to a kind of transmission line moment ripple overvoltage buffer unit and method, be applied in transmission line, be connected in parallel together with insulator on transmission line, this transmission line moment ripple overvoltage buffer unit comprises: discharging gap, high-potential gradient zinc oxide resistance, pressure circuit, rectification circuit, energy storage capacitor, magnetic driven circuit, screens device sum counter.The resistor disc of high-potential gracient is adopted to enhance rush of current ability and the through-current capability of device; alleviate the weight and volume of device; improve the condition of resistor disc long-term work; extend the useful life of resistor disc, can play a good protection to the damage that the overvoltage such as thunder and lightning and operation causes.
Description
Technical field
The present invention relates to a kind of transmission line moment ripple overvoltage buffer unit and way to play for time, belong to the technical field of overvoltage protection.
Background technology
At present, ZnO resistors and silastic material are the overvoltage protections that in transmission line, performance is best and with fastest developing speed.By improving protected equipment dependability and over-voltage level can bring good effect; and the nonlinear resistance property of zinc oxide valve plate plays vital effect to over-voltage; so countries in the world are all in raw material and the production technology of Improvement zinc oxide valve plate of doing one's utmost; improve the service conditions of ZnO resistors; the monitoring of raising system and protective capacities; and make every effort to up-to-date technology is applied in the design of over-voltage device, to reaching more preferably protection effect.
Nowadays, ZnO resistors over-voltage device is in sealing problem, performance, effectively block and power frequency continued flow, problem of aging need improve, mainly Sealing Technology imperfection, or the encapsulant ageing resistace adopted is unstable, effectively can not block power frequency continued flow when difference variation is larger.Running time, close to the life of product later stage, makes moisture immerse because of its poor sealing, causes built-in electrical insulation to damage, thus accelerates the aging of resistor disc until damage.
Summary of the invention
In order to over-voltage amplitude, protection power equipment is from the damage of overvoltage energy.Monitor operation conditions and action frequency simultaneously, for operation of power networks provides safety guarantee, the present invention proposes a kind of transmission line moment ripple overvoltage buffer unit, be applied in transmission line, be connected in parallel together with insulator on transmission line, this transmission line moment ripple overvoltage buffer unit comprises: discharging gap, high-potential gradient zinc oxide resistance, pressure circuit, rectification circuit, energy storage capacitor, magnetic driven circuit, screens device sum counter, is characterized in that:
Discharging gap and high-potential gradient zinc oxide resistant series, both protect each other, discharging gap makes electric charge rate be zero, solve the problem of aging of ZnO resistors valve block, and discharging gap makes the resistor disc of high-potential gracient and line voltage isolate, only under over-voltage condition, bear overvoltage, discharging gap is fragile when afterflow, and ZnO resistors valve block can make it without afterflow;
Pressure circuit carries out pressure to the overvoltage energy pulse through discharge counter of releasing;
Rectification circuit carries out rectification to the output current of pressure circuit, is converted into mild electric current;
Energy storage capacitor stores the electric current that rectification circuit exports;
Counter can monitor superpotential action frequency, recorded electric voltage exception situation;
When the electric current of storage is discharged on magnetic driven circuit by energy storage capacitor, magnetic driven circuit produces the magnetic continued, and inhale dynamic screens device, the runner on counter rotates lattice, reaches the order ground of counting;
Under normal line voltage, the zinc oxide resistance sheet of high-potential gracient is in isolation for line voltage, discharging gap not conducting; When over-voltage condition, namely the voltage on discharging gap exceed its bear amount electric discharge conducting time, overvoltage is added in the two ends of the zinc oxide resistance sheet of high-potential gracient, and the ZnO resistors of high-potential gracient becomes low resistance state from high resistance, overvoltage of releasing energy;
When the voltage resume on high-voltage line is normal, the zinc oxide resistance sheet of high-potential gracient then becomes high resistance, and discharging gap extinguish arcs, blocks power frequency continued flow, inhales dynamic screens device and resets.
The invention allows for a kind of transmission line moment ripple overvoltage way to play for time, be applied in transmission line, it is characterized in that:
By discharging gap and high-potential gradient zinc oxide resistant series, both are made to protect each other, discharging gap makes electric charge rate be zero, solve the problem of aging of ZnO resistors valve block, and discharging gap makes the resistor disc of high-potential gracient and line voltage isolate, only under over-voltage condition, bear overvoltage, discharging gap is fragile when afterflow, and ZnO resistors valve block can make it without afterflow;
By pressure circuit, pressure is carried out to the overvoltage energy pulse through discharge counter of releasing;
By the output current input rectification circuit of pressure circuit, be converted into mild electric current and export;
The electric current that rectification circuit exports is stored in energy storage capacitor;
Superpotential action frequency can be monitored, recorded electric voltage exception situation by counter;
When the electric current of storage is discharged on magnetic driven circuit by energy storage capacitor, magnetic driven circuit produces the magnetic continued, and inhale dynamic screens device, the runner on counter rotates lattice, reaches the order ground of counting;
Under normal line voltage, the zinc oxide resistance sheet of high-potential gracient is in isolation for line voltage, discharging gap not conducting; When over-voltage condition, namely the voltage on discharging gap exceed its bear amount electric discharge conducting time, overvoltage is added in the two ends of the zinc oxide resistance sheet of high-potential gracient, and the ZnO resistors of high-potential gracient becomes low resistance state from high resistance, overvoltage of releasing energy;
When the voltage resume on high-voltage line is normal, the zinc oxide resistance sheet of high-potential gracient then becomes high resistance, and discharging gap extinguish arcs, blocks power frequency continued flow, inhales dynamic screens device and resets.
The present invention is compared to traditional excess voltage protection; there is rush of current ability and the through-current capability of intensifier; the weight and volume of alleviator; improve the condition of resistor disc long-term work; extend the advantage in the useful life of resistor disc, can play a good protection to the damage that the overvoltage such as thunder and lightning and operation causes.
Accompanying drawing explanation
Fig. 1 is the structure chart of transmission line of the present invention moment ripple overvoltage buffer unit;
Fig. 2 is the structural representation of monitor of the present invention;
Fig. 3 is the electric theory diagram of transmission line of the present invention moment ripple overvoltage buffer unit.
Embodiment
In Fig. 1,1 is high-voltage terminal, and 2 is discharging gap, and 3 is high-potential gradient zinc oxide resistance, and 4 is silastic material, and 5 is monitor, and 6 is earth connection, and 7 is earth electrode, and 8 is insulating cylinder, and 9 is electrode, and 29 is high-voltage terminal end, and 30 is high-voltage line, and 20 is insulator.
In Fig. 2,10 is ZnO resistors valve block, and 11 is support, 12 is interface, and 13 is screens device, and 14 is magnetic driven circuit, 15 is counter, and 16 is runner, and 17 is rectification circuit, 18 is pressure resistance, and 19 for inhaling sheet, and 21 is energy storage capacitor, 22 is wire, 23 is current-limiting resistance, and 24 is connecting rod, and 25 is counter binding post.
Transmission line moment ripple overvoltage buffer unit is mainly used in transmission line, is connected in parallel on transmission line together with insulator.Its major advantage is: adopt the resistor disc of high-potential gracient to enhance rush of current ability and the through-current capability of device, significantly reduce the weight and volume of device.Discharging gap makes the resistor disc of high-potential gracient and line voltage isolate, and only under over-voltage condition, bears overvoltage, improves the condition of resistor disc long-term work greatly, extend the useful life of resistor disc.And discharge counter effectively can monitor superpotential action frequency, the abnormal conditions such as recorded voltage.
The specific works process of device is:
Under normal line voltage, the zinc oxide resistance sheet 3 of high-potential gracient is in isolation for line voltage, discharging gap 2 not conducting.
When over-voltage condition, the voltage on discharging gap 2 exceedes it and bears amount electric discharge conducting.Now, overvoltage is added in zinc oxide resistance sheet 3 two ends of high-potential gracient, and the ZnO resistors 3 of high-potential gracient becomes low resistance state from high resistance immediately, overvoltage of releasing energy.The overvoltage energy pulse of releasing flows through discharge counter 5, by ZnO resistors valve block 10 pressure and rectification circuit 17 rectification, change mild electric current in energy storage capacitor 21 energy storage, be discharged on magnetic driven circuit 14 and produce lasting magnetic, electromagnetism inhales attracting sheet 19, stir screens device 13, make the runner 16 on counter 15 rotate lattice, reach the order ground of counting
When the voltage resume on high-voltage line 30 is normal, the zinc oxide resistance sheet 3 of high-potential gracient becomes high resistance, and discharging gap 2 extinguish arcs, blocks power frequency continued flow.Inhale dynamic screens device 13 to reset.
The discharging gap of device and the ZnO resistors of high-potential gracient are protected each other.Discharging gap makes the ZnO resistors chargeability of high-potential gracient be zero, solves the problem of aging of ZnO resistors valve block, and discharging gap is fragile when afterflow, and the superior performance of ZnO resistors valve block makes it without afterflow.In addition device adopt silastic material to have that insulation characterisitic is good, dielectric strength is high than traditional porcelain overcoat, the advantage such as ageing-resistant, explosion-proof, hydrophobicity, sealing.In sum, device can play a good protection to the damage that the overvoltage such as thunder and lightning and operation causes.
One embodiment of the present of invention are a kind of transmission line moment ripple overvoltage buffer units, be applied in transmission line, be connected in parallel together with insulator on transmission line, this transmission line moment ripple overvoltage buffer unit comprises: discharging gap, high-potential gradient zinc oxide resistance, pressure circuit, rectification circuit, energy storage capacitor, magnetic driven circuit, screens device sum counter, is characterized in that:
Discharging gap and high-potential gradient zinc oxide resistant series, both protect each other, discharging gap makes electric charge rate be zero, solve the problem of aging of ZnO resistors valve block, and discharging gap makes the resistor disc of high-potential gracient and line voltage isolate, only under over-voltage condition, bear overvoltage, discharging gap is fragile when afterflow, and ZnO resistors valve block can make it without afterflow;
Pressure circuit carries out pressure to the overvoltage energy pulse through discharge counter of releasing;
Rectification circuit carries out rectification to the output current of pressure circuit, is converted into mild electric current;
Energy storage capacitor stores the electric current that rectification circuit exports;
Counter can monitor superpotential action frequency, recorded electric voltage exception situation;
When the electric current of storage is discharged on magnetic driven circuit by energy storage capacitor, magnetic driven circuit produces the magnetic continued, and inhale dynamic screens device, the runner on counter rotates lattice, reaches the order ground of counting;
Under normal line voltage, the zinc oxide resistance sheet of high-potential gracient is in isolation for line voltage, discharging gap not conducting; When over-voltage condition, namely the voltage on discharging gap exceed its bear amount electric discharge conducting time, overvoltage is added in the two ends of the zinc oxide resistance sheet of high-potential gracient, and the ZnO resistors of high-potential gracient becomes low resistance state from high resistance, overvoltage of releasing energy;
When the voltage resume on high-voltage line is normal, the zinc oxide resistance sheet of high-potential gracient then becomes high resistance, and discharging gap extinguish arcs, blocks power frequency continued flow, inhales dynamic screens device and resets.
An alternative embodiment of the invention is a kind of transmission line moment ripple overvoltage way to play for time, is applied in transmission line, it is characterized in that:
By discharging gap and high-potential gradient zinc oxide resistant series, both are made to protect each other, discharging gap makes electric charge rate be zero, solve the problem of aging of ZnO resistors valve block, and discharging gap makes the resistor disc of high-potential gracient and line voltage isolate, only under over-voltage condition, bear overvoltage, discharging gap is fragile when afterflow, and ZnO resistors valve block can make it without afterflow;
By pressure circuit, pressure is carried out to the overvoltage energy pulse through discharge counter of releasing;
By the output current input rectification circuit of pressure circuit, be converted into mild electric current and export;
The electric current that rectification circuit exports is stored in energy storage capacitor;
Superpotential action frequency can be monitored, recorded electric voltage exception situation by counter;
When the electric current of storage is discharged on magnetic driven circuit by energy storage capacitor, magnetic driven circuit produces the magnetic continued, and inhale dynamic screens device, the runner on counter rotates lattice, reaches the order ground of counting;
Under normal line voltage, the zinc oxide resistance sheet of high-potential gracient is in isolation for line voltage, discharging gap not conducting; When over-voltage condition, namely the voltage on discharging gap exceed its bear amount electric discharge conducting time, overvoltage is added in the two ends of the zinc oxide resistance sheet of high-potential gracient, and the ZnO resistors of high-potential gracient becomes low resistance state from high resistance, overvoltage of releasing energy;
When the voltage resume on high-voltage line is normal, the zinc oxide resistance sheet of high-potential gracient then becomes high resistance, and discharging gap extinguish arcs, blocks power frequency continued flow, inhales dynamic screens device and resets.
Transmission line overvoltage protection has great importance, and the superiority of device is high, and performance and protected effect clearly, are with a wide range of applications.
The above embodiment only have expressed the preferred embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (2)
1. a transmission line moment ripple overvoltage buffer unit, be applied in transmission line, be connected in parallel together with insulator on transmission line, this transmission line moment ripple overvoltage buffer unit comprises: discharging gap, high-potential gradient zinc oxide resistance, pressure circuit, rectification circuit, energy storage capacitor, magnetic driven circuit, screens device sum counter, is characterized in that:
Discharging gap and high-potential gradient zinc oxide resistant series, both protect each other, discharging gap makes electric charge rate be zero, solve the problem of aging of ZnO resistors valve block, and discharging gap makes the resistor disc of high-potential gracient and line voltage isolate, only under over-voltage condition, bear overvoltage, discharging gap is fragile when afterflow, and ZnO resistors valve block can make it without afterflow;
Pressure circuit carries out pressure to the overvoltage energy pulse through discharge counter of releasing;
Rectification circuit carries out rectification to the output current of pressure circuit, is converted into mild electric current;
Energy storage capacitor stores the electric current that rectification circuit exports;
Counter can monitor superpotential action frequency, recorded electric voltage exception situation;
When the electric current of storage is discharged on magnetic driven circuit by energy storage capacitor, magnetic driven circuit produces the magnetic continued, and inhale dynamic screens device, the runner on counter rotates lattice, reaches the object of counting;
Under normal line voltage, the zinc oxide resistance sheet of high-potential gracient is in isolation for line voltage, discharging gap not conducting; When over-voltage condition, namely the voltage on discharging gap exceed its bear amount electric discharge conducting time, overvoltage is added in the two ends of the zinc oxide resistance sheet of high-potential gracient, and the ZnO resistors of high-potential gracient becomes low resistance state from high resistance, overvoltage of releasing energy;
When the voltage resume on high-voltage line is normal, the zinc oxide resistance sheet of high-potential gracient then becomes high resistance, and discharging gap extinguish arcs, blocks power frequency continued flow, inhales dynamic screens device and resets;
This transmission line moment ripple overvoltage buffer unit adopts silastic material.
2. a transmission line moment ripple overvoltage way to play for time, is applied in transmission line, is realized, it is characterized in that by transmission line moment ripple overvoltage buffer unit:
By discharging gap and high-potential gradient zinc oxide resistant series, both are made to protect each other, discharging gap makes electric charge rate be zero, solve the problem of aging of ZnO resistors valve block, and discharging gap makes the resistor disc of high-potential gracient and line voltage isolate, only under over-voltage condition, bear overvoltage, discharging gap is fragile when afterflow, and ZnO resistors valve block can make it without afterflow;
By pressure circuit, pressure is carried out to the overvoltage energy pulse through discharge counter of releasing;
By the output current input rectification circuit of pressure circuit, be converted into mild electric current and export;
The electric current that rectification circuit exports is stored in energy storage capacitor;
By the superpotential action frequency of counters monitor, recorded electric voltage exception situation;
When the electric current of storage is discharged on magnetic driven circuit by energy storage capacitor, magnetic driven circuit produces the magnetic continued, and inhale dynamic screens device, the runner on counter rotates lattice, reaches the object of counting;
Under normal line voltage, the zinc oxide resistance sheet of high-potential gracient is in isolation for line voltage, discharging gap not conducting; When over-voltage condition, namely the voltage on discharging gap exceed its bear amount electric discharge conducting time, overvoltage is added in the two ends of the zinc oxide resistance sheet of high-potential gracient, and the ZnO resistors of high-potential gracient becomes low resistance state from high resistance, overvoltage of releasing energy;
When the voltage resume on high-voltage line is normal, the zinc oxide resistance sheet of high-potential gracient then becomes high resistance, and discharging gap extinguish arcs, blocks power frequency continued flow, inhales dynamic screens device and resets;
This transmission line moment ripple overvoltage buffer unit adopts silastic material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310003661.5A CN103078309B (en) | 2013-01-06 | 2013-01-06 | Transmission line moment ripple overvoltage buffer unit and way to play for time |
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| CN201310003661.5A CN103078309B (en) | 2013-01-06 | 2013-01-06 | Transmission line moment ripple overvoltage buffer unit and way to play for time |
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| CN103078309B true CN103078309B (en) | 2015-11-04 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87204519U (en) * | 1987-08-20 | 1988-03-30 | 邮电部株洲通信元件厂 | Surge counter |
| CN2200882Y (en) * | 1994-04-22 | 1995-06-14 | 姚巧玲 | Movement counter for lightning arrester |
| DE19856939A1 (en) * | 1998-12-10 | 2000-06-15 | Bettermann Obo Gmbh & Co Kg | Circuit arrangement for protecting electrical installations against overvoltage events |
| CN201417654Y (en) * | 2009-05-08 | 2010-03-03 | 武汉爱劳高科技有限责任公司 | Strong thunder load arrester for overhead transmission line |
-
2013
- 2013-01-06 CN CN201310003661.5A patent/CN103078309B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87204519U (en) * | 1987-08-20 | 1988-03-30 | 邮电部株洲通信元件厂 | Surge counter |
| CN2200882Y (en) * | 1994-04-22 | 1995-06-14 | 姚巧玲 | Movement counter for lightning arrester |
| DE19856939A1 (en) * | 1998-12-10 | 2000-06-15 | Bettermann Obo Gmbh & Co Kg | Circuit arrangement for protecting electrical installations against overvoltage events |
| CN201417654Y (en) * | 2009-05-08 | 2010-03-03 | 武汉爱劳高科技有限责任公司 | Strong thunder load arrester for overhead transmission line |
Non-Patent Citations (1)
| Title |
|---|
| 复合外套避雷器在电力系统中的应用;张育华等;《电瓷避雷器》;20070430(第2期);第25-29页 * |
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