CN108599129A - A kind of road of energy consumption molded line certainly composite lightning-protection device - Google Patents
A kind of road of energy consumption molded line certainly composite lightning-protection device Download PDFInfo
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- CN108599129A CN108599129A CN201810747456.2A CN201810747456A CN108599129A CN 108599129 A CN108599129 A CN 108599129A CN 201810747456 A CN201810747456 A CN 201810747456A CN 108599129 A CN108599129 A CN 108599129A
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- energy consumption
- circuit
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- energy
- thunder
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- 238000005265 energy consumption Methods 0.000 title claims abstract description 78
- 239000002131 composite material Substances 0.000 title claims abstract description 14
- 230000015556 catabolic process Effects 0.000 claims description 11
- 238000000518 rheometry Methods 0.000 claims 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 6
- 230000008859 change Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011787 zinc oxide Substances 0.000 description 3
- 230000009514 concussion Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000025274 Lightning injury Diseases 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002113 chemopreventative effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000004709 eyebrow Anatomy 0.000 description 1
- 210000000720 eyelash Anatomy 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/042—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage comprising means to limit the absorbed power or indicate damaged over-voltage protection device
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- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a kind of from energy consumption molded line road composite lightning-protection device, which is used for receiving direct stroke equipped with arrester, and arrester rear end is connected with several consumptions for being used for carrying out multiple thunder energy from energy consumption circuit.Several are connected in energy consumption circuit in a series arrangement certainly, and the single circuit of energy consumption certainly includes inductance coil, coil resistance and capacitance gap, and inductance coil is in parallel with capacitance gap after connecting with coil resistance to be formed from energy consumption circuit.When lightning current by from energy consumption circuit when, inductance coil generate anti-induction electromotive force make the branch current initial value be zero and the capacitance gap both ends formed high voltage make its disruptive discharge release be equal to lightning current high current so that achieve the purpose that consume thunder energy.The device solves the problems, such as the counterattack of traditional lightning protection device from source, is dissolved before lightning current ground connection, the effective guarantee safety of personnel and equipment.
Description
Technical field
The invention belongs to transmission line of electricity anti-thunder technical fields, and in particular to a kind of from energy consumption molded line road composite lightning-protection device.
Background technology
Traditional lightning protection device includes lightning rod and arrester.Wherein lightning rod, that is, arrester, when circuit or power station setting are kept away
After thunder needle, the thunder on periphery can be directed to and enter ground herein, can thus played a protective role to perimeter circuit and equipment, be grounded
Each link that lightning current is introduced underground by downlead and earthing or grounding means cannot go wrong, and could realize lightning-arrest effect.
Due to the metallic object (including arrester, down conductor and grounding body) by direct lightning strike, powerful thunder is being guided
When electric current flows into the earth, it will produce on its downlead, grounding body and the metallic conductor that is connected with them very high
Voltage generates huge potential difference between metal object in connection around, equipment, circuit, human body, this potential difference
It can cause flashover.Dodge between moment and the earth that there is very high voltage, the voltage pair and other metal objects greatly connecting connecing
Product discharge, this is back flashover phenomenon, which will cause circuit that short circuit and equipment damage over the ground occurs.
Arrester (i.e. nonlinear resistance) is exactly counterattack phenomenon generation in order to prevent and generates.It takes shelter from the thunder when lightning current passes through
When needle flows into overhead line structures, arrester makes lightning current pass through since high current acts on its resistance very little, prevents lightning current by circuit
This line-to-ground short circuit after insulator breakdown, when line current will from arrester by when due to its minimum resistance of electric current it is very big
And prevent line current from passing through.Therefore, arrester can effectively prevent back flashover.However arrester installation is complicated and needs anti-
The position of back flashover is more, and needs to have a power failure after arrester is by first breakdown and replace, therefore which greatly enhances installation hardly possiblies
Degree and installation cost, and even if the combination of lightning rod and arrester can either protect perimeter circuit and equipment, but enter big behind ground
Electric current will produce larger step voltage, threaten personal safety.
Conventional method reaches lightning protection aerial drainage by the way that the means such as ground resistance, installation water suction module, zinc oxide surge arresters are transformed
Purpose.It is greatly limited to the absorbability of lightning current however in short-term；When lightning current is larger, ground resistance compared with
It is defeated because lightning current wave mode is very big in ascending wave slope over 10 and conventional method can not effectively change this present situation in the case of good
Electric line is it occur frequently that counterattack (lightning stroke occurs mainly in the stage of lightning wave rising).Therefore only with conventional method lightning protection effect
Bad, here it is transformation ground resistance, zinc oxide surge arresters in some weight minefields, the unconspicuous main cause of lightning protection effect.
According to the incomplete statistics of lightning protection testing agency, national Lightning Disaster typical case is up to 188 within 2017, wherein by
The case caused by lightning protection device is not perfect accounts for therein 1/3, therefore realizes that a set of effective lightning protection device and lightening arresting method are compeled
In the eyebrows and eyelashes.
Invention content
In order to achieve the above objectives, the technical solution adopted by the present invention is：
It is a kind of to be formed from energy consumption molded line road composite lightning-protection device from energy consumption circuit in series by several, the 1st consumable
Can any node in circuit be connected with arrester, the tip of the arrester vertically upward, for receiving direct stroke by thunder
Electric current introduces the 1st from energy consumption circuit, the last one described circuit rear end connection of consuming energy certainly needs the overhead line structures tower top of lightning protection.
The concatenated number range from energy consumption circuit is each to correspond to one from energy consumption circuit in 1-10 sections
The thunder energy of type dissolves.
The single circuit of energy consumption certainly includes inductance coil and capacitance gap；The inductance coil is in parallel with capacitance gap
It is formed from energy consumption circuit.
The inductance size L of inductance coil in each circuit from energy consumption need to meet the thunder and lightning dissolved needed for the unit interval
Stream is applied to induced electromotive force caused by the current change quantity on inductance coilMore than the breakdown voltage of capacitance gap
Ensure that the capacitance gap is breakdown with this, thunder energy from energy consumption circuit by being consumed.
The single circuit of energy consumption certainly dissolves thunder energy when the capacitance gap is breakdown；If the capacitance
It is equal to single inductance coil when gap is not breakdown, does not constitute from energy consumption circuit, do not dissolve thunder energy, lightning current passes through institute
It states single inductance coil and flows into next energy consumption circuit certainly.
Several described, described several certainly energy consumptions identical from structure, the parameter of the capacitance gap in energy consumption circuit
The inductance size L of inductance coil in circuit is not all equal, and each type of lightning current corresponds to one to carry out from energy consumption circuit
The inductance size L of the consumption of thunder energy, the single inductance coil from circuit of consuming energy is determined by this from energy consumption circuit
The lightning current change rate of the thunder and lightning stream type of consumptionIt determines.
A kind of electric current flowing situation from energy consumption molded line road composite lightning-protection device includes the following steps：
S1. lightning current is drained to from energy consumption circuit by the arrester；
S2. lightning current by it is several it is described from the energy consumption circuits that are connected into of circuits and wherein some can make between capacitance
Being dissolved from energy consumption circuit for disruptive discharge occurs for gap；
S3. lightning current is into being somebody's turn to do from after energy consumption circuit, and lightning current makes after the inductance coil generates anti-induction electromotive force
Capacitance gap both ends form high voltage；
S4. capacitance gap high voltage caused by lightning current has and the essentially identical side of lightning current size after being punctured
Pass through in the capacitive branch to identical electric current, is formed at inductance coil opposite with the essentially identical direction of lightning current size
Electric current；
S5. after lightning current inputs, inductance can be considered that the power supply of instant memory thunder energy, capacitance can be considered carrying at this time
And the resistance of thunder energy is consumed, it is opposite to form size of current equal direction between the capacitance and inductance in the circuit from energy consumption
Concussion high current after electric current dissolved in the circuit and export smaller current flow into overhead line structures tower top.
Beneficial effects of the present invention：
(1) good electric property, reduces the amplitude that lightning current flows into grounding body, and earth current size reduces.In 110kV lines
On the road, the lightning current of 100kA hit on shaft tower will not occur counterattack (in the case of zinc oxide surge arresters, lightning current reaches 70kA
Three-phase counterattack will occur)；
(2) easy for installation, it can be installed under electrification, power-off condition, be adapted for mount on high mountain, knob；
(3) easy to maintain, if there is operational defect is easy to be found, arrester is then not easy to be found；
(4) light-weight (the only a quarter of arrester weight), low cost does not influence the stress balance of shaft tower；
(5) if equivalent defence can be carried out to transmission line of electricity on the circuit of double circuits on same tower operation, difference is not present
The phenomenon that chemoprevention thunder；
(6) safe and stable operation of transmission line of electricity is not influenced；
(7) it is suitable for the lightning protection of different voltages grade.
Description of the drawings
Fig. 1 is the circuit topology figure of the present invention；
Fig. 2 is the lightning current waveform figure of the present invention；
Fig. 3 is current waveform figure in the circuit of energy consumption certainly of the present invention；
Fig. 4 is the energy consumption circuit output current wave figure certainly of the present invention；
The label meaning for Fig. 1 that embodiment is related to：
1- arresters；Capacitance gaps of the 2- from circuit one of consuming energy；Inductance coils of the 3- from circuit one of consuming energy；4- consumes energy back certainly
The coil resistance on road one；Capacitance gaps of the 5- from circuit two of consuming energy；Inductance coils of the 6- from circuit two of consuming energy；7- is from consuming energy circuit
Two coil resistance.
Specific implementation method
The embodiment be it is above-mentioned it is several from energy consumption circuit particular number be two when the case where, below in conjunction with the accompanying drawings to this hair
It is bright to be further described.
It is shown in Figure 1, it is a kind of fixed for making thunder and lightning equipped with arrester 1 from molded line road composite lightning-protection device front end of consuming energy
To reception direct stroke.There are two the connections of 1 rear end of the arrester from energy consumption circuit (from energy consumption circuit one, certainly energy consumption circuit
Two) it is used for carrying out the multiple thunder energy consumption of different lightning currents, the line that lightning protection is needed from the connection of energy consumption two rear end of circuit
Road or shaft tower.
Described two connect in a series arrangement from energy consumption circuit, include the inductance from circuit one of consuming energy from circuit one of consuming energy
Coil 3, the capacitance gap 2 from the coil resistance 4 in energy consumption circuit one and from circuit one of consuming energy；The inductance coil 3 and the line
Enclose in parallel with capacitance gap 2 after resistance 4 is connected formed from energy consumption circuit；From each element connection type in energy consumption circuit two with certainly
Consume energy circuit one, the wherein certainly inductance size L of the inductance coil 6 in energy consumption circuit two and the inductance coil 3 from energy consumption circuit one
Inductance size L is unequal.
As lightning current i0When by two oneself energy consumption circuits, the inductance coil 3 and 6, which generates anti-induction electromotive force, makes this
Branch current i2Initial value is zero and forms high voltage at the capacitance gap both ends and make its disruptive discharge release to be equal to thunder
Electric current i0High current i1And then achieve the purpose that consume thunder energy.
The inductance size L of described two inductance coils need to meet the energy consumption circuit respectively responsible consumption of institute certainly of unit interval two
Different types lightning current be applied to induced electromotive force caused by the current change quantity on inductance coilMore than electricity
Hold the breakdown voltage in gap and energy consumption circuit one certainly is ensured and from energy consumption circuit two to being respectively responsible for the thunder not of the same race dissolved with this
Electric current plays consumption.
The inductance size L of the inductance coil from consume energy circuit one and circuit two of consuming energy certainly is unequal to be directed to difference
The thunder and lightning of type carries out the consumption of lightning current；From energy consumption circuit one inductance coil 3 inductance size L by from energy consumption one institute of circuit
It is responsible for the lightning current change rate of consumptionIt determines, the inductance size L of the inductance coil 6 in circuit two of consuming energy certainly by consuming energy back certainly
It is responsible for the lightning current change rate of consumption in road twoIt determines.
A kind of electric current flowing situation from energy consumption molded line road composite lightning-protection device includes the following steps：
S1. the arrester 1 is by lightning current i0It is drained to from energy consumption circuit one；
S2. shown in Figure 2, lightning current i0The circuit being connected by energy consumption circuit one certainly and from energy consumption circuit two is simultaneously
It is dissolved from energy consumption circuit one；
S3. shown in Figure 3, lightning current is entering from after energy consumption circuit one, and it is electronic that the inductance coil 3 generates anti-induction
Gesture makes branch current i2Initial value is zero and forms high voltage at 2 both ends of the capacitance gap；
S4. shown in Figure 3, the capacitance gap 2 is by lightning current i0Have after generated high electrical breakdown and lightning current
The identical electric current i in the essentially identical direction of size1Pass through in the capacitive branch, is formed and electric current i at inductance coil 31Size phase
Equidirectional opposite electric current i2, therefore lightning current is shaking from flowing in energy consumption circuit one and is finally being discharged consumption；
S5. shown in Figure 4, size of current phase is formed between the capacitance 2 and inductance 3 in the circuit one from energy consumption
Lightning current is dissolved in the circuit and exports smaller current i after the opposite concussion electric current in equal directions3Flow into circuit or shaft tower.
Although the detailed description and description of the specific embodiments of the present invention are given above, it should be noted that
We can carry out various equivalent changes and modification to the above embodiment according to the concept of the present invention, and generated function is made
It, should all be within protection scope of the present invention when with the spirit still covered without departing from specification and attached drawing.The above, only
Presently preferred embodiments of the present invention is not intended to limit the invention, every according to the technical essence of the invention to above example institute
Any trickle amendment, equivalent replacement and the improvement made, should be included within the protection domain of technical solution of the present invention.
Claims (6)
1. a kind of from energy consumption molded line road composite lightning-protection device, it is characterised in that：Described device is by several circuit in series that consume energy certainly
It forms, described 1st any node from energy consumption circuit is connected with arrester, and the tip of the arrester upward, is used vertically
Lightning current is introduced the 1st from energy consumption circuit to receive direct stroke, the last one described circuit rear end connection of consuming energy certainly needs
The overhead line structures tower top of lightning protection.
2. according to claim 1 from energy consumption molded line road composite lightning-protection device, it is characterised in that：It is described concatenated from energy consumption
The number range in circuit is each to correspond to a type of thunder energy consumption from energy consumption circuit in 1-10 sections.
3. according to claim 1 from energy consumption molded line road composite lightning-protection device, it is characterised in that：Described is single from energy consumption
Circuit includes inductance coil and capacitance gap；The inductance coil is in parallel with capacitance gap to be formed from energy consumption circuit.
4. according to claim 3 from energy consumption molded line road composite lightning-protection device, it is characterised in that：It is described each to consume energy back certainly
The inductance size L of inductance coil in road need to meet the electric current that the lightning current dissolved needed for the unit interval is applied on inductance coil
Induced electromotive force caused by variable quantityEnsure that the capacitance gap is hit more than the breakdown voltage of capacitance gap with this
It wears, thunder energy from energy consumption circuit by being consumed.
5. according to claim 3 from energy consumption molded line road composite lightning-protection device, it is characterised in that：It is described individually to consume energy back certainly
Road dissolves thunder energy when the capacitance gap is breakdown；If the capacitance gap is equal to single when not breakdown
Inductance coil is not constituted from energy consumption circuit, does not dissolve thunder energy, and lightning current is flowed into next by the single inductance coil
From energy consumption circuit.
6. according to claim 4 from energy consumption molded line road composite lightning-protection device, it is characterised in that：Described several consume energy certainly
Structure, the parameter of capacitance gap in circuit are identical, and the inductance of the inductance coil in several described circuits of consuming energy certainly is big
Small L is not all equal, and each type of lightning current corresponds to a consumption that thunder energy is carried out from energy consumption circuit, it is described it is single from
The inductance size L of inductance coil in energy consumption circuit is determined the thunder and lightning rheology of the thunder and lightning stream type of consumption by this from energy consumption circuit
RateIt determines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810747456.2A CN108599129A (en) | 2018-07-09 | 2018-07-09 | A kind of road of energy consumption molded line certainly composite lightning-protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810747456.2A CN108599129A (en) | 2018-07-09 | 2018-07-09 | A kind of road of energy consumption molded line certainly composite lightning-protection device |
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| Publication Number | Publication Date |
|---|---|
| CN108599129A true CN108599129A (en) | 2018-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810747456.2A Pending CN108599129A (en) | 2018-07-09 | 2018-07-09 | A kind of road of energy consumption molded line certainly composite lightning-protection device |
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| CN (1) | CN108599129A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245506A (en) * | 2018-10-22 | 2019-01-18 | 南京南瑞继保电气有限公司 | A kind of energy-consuming device and control method |
| WO2020011040A1 (en) * | 2018-07-09 | 2020-01-16 | 王雪燕 | Self-energy-consuming type circuit integrated lightning protection apparatus |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202513533U (en) * | 2012-04-11 | 2012-10-31 | 李锦刚 | Thunder air-termination system for protecting poles and towers of high-tension transmission lines |
| CN103474940A (en) * | 2013-09-28 | 2013-12-25 | 成都星河科技产业有限公司 | Comprehensive lightning protection system of electric transmission lines of high tower of power grid |
| CN203491507U (en) * | 2013-09-28 | 2014-03-19 | 成都星河科技产业有限公司 | Non-access type tower lightning protection lightning arrester |
| CN104659776A (en) * | 2014-12-04 | 2015-05-27 | 国家电网公司 | Lightning counterattack protection device |
| CN208299437U (en) * | 2018-07-09 | 2018-12-28 | 王雪燕 | A kind of energy consumption molded line road composite lightning-protection device certainly |
-
2018
- 2018-07-09 CN CN201810747456.2A patent/CN108599129A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202513533U (en) * | 2012-04-11 | 2012-10-31 | 李锦刚 | Thunder air-termination system for protecting poles and towers of high-tension transmission lines |
| CN103474940A (en) * | 2013-09-28 | 2013-12-25 | 成都星河科技产业有限公司 | Comprehensive lightning protection system of electric transmission lines of high tower of power grid |
| CN203491507U (en) * | 2013-09-28 | 2014-03-19 | 成都星河科技产业有限公司 | Non-access type tower lightning protection lightning arrester |
| CN104659776A (en) * | 2014-12-04 | 2015-05-27 | 国家电网公司 | Lightning counterattack protection device |
| CN208299437U (en) * | 2018-07-09 | 2018-12-28 | 王雪燕 | A kind of energy consumption molded line road composite lightning-protection device certainly |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020011040A1 (en) * | 2018-07-09 | 2020-01-16 | 王雪燕 | Self-energy-consuming type circuit integrated lightning protection apparatus |
| CN109245506A (en) * | 2018-10-22 | 2019-01-18 | 南京南瑞继保电气有限公司 | A kind of energy-consuming device and control method |
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Application publication date: 20180928 |
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