CN105932547A - Capacitive type energy-releasing gap apparatus for grounding electrode line and mounting method for capacitive type energy-releasing gap apparatus - Google Patents
Capacitive type energy-releasing gap apparatus for grounding electrode line and mounting method for capacitive type energy-releasing gap apparatus Download PDFInfo
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- CN105932547A CN105932547A CN201610455485.2A CN201610455485A CN105932547A CN 105932547 A CN105932547 A CN 105932547A CN 201610455485 A CN201610455485 A CN 201610455485A CN 105932547 A CN105932547 A CN 105932547A
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- shaft tower
- electrode
- space device
- ground electrode
- inter space
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/10—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
- H01B17/48—Means for obtaining improved distribution of voltage; Protection against arc discharges over chains or other serially-arranged insulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T1/00—Details of spark gaps
- H01T1/02—Means for extinguishing arc
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/08—Overvoltage arresters using spark gaps structurally associated with protected apparatus
Abstract
The invention discloses a capacitive type energy-releasing gap apparatus for a grounding electrode line and a mounting method for the capacitive type energy-releasing gap apparatus. The energy-releasing gap apparatus comprises an impact capacitor, a wire side electrode, a tower side electrode, a metal connecting rod, a current wire and a supporting insulator, wherein the supporting insulator is mounted on the tower; the impact capacitor is fixed on the supporting insulator; one end of the metal connecting rod is connected with the high-voltage end of the impact capacitor while the other end of the metal connecting rod is connected with the tower side electrode; one end of the current wire is connected with the low-voltage end of the impact capacitor while the other end of the current wire is connected with the tower body; and the wire side electrode is fixed below the wire end of the tower insulator chain through a fitting. By adoption of the capacitive type energy-releasing gap apparatus, a technical effect of effective energy releasing is realized without causing faults easily and without requiring scheduled maintenance.
Description
Technical field
The present invention relates to power equipment research field, in particular it relates to a kind of ground electrode circuit condenser type releases energy inter space device and installation method thereof.
Background technology
Patent " is exclusively used in the parallel connection gaps (201420733499.2) of 110kV porcelain insulator ", " a kind of strain insulator-string parallel clearance lightning protection device
(201520762095.0) ", " adjustable parallel connection gaps (201520834624.3) " all propose the conventional parallel gap being applicable to transmission line of alternation current；This parallel connection gaps is made up of two sparking electrodes, and sparking electrode is respectively arranged in high-pressure side and the low-pressure end of insulator chain；After circuit suffers thunderbolt to cause gap flashover and set up electric arc, by making electric arc autonomic movement, electric arc is allowed to extinguish at alternating current near zero-crossing point；When such conventional parallel gap applies to direct current grounding pole circuit, owing to the arc current after the flashover of gap is DC current, without zero crossing, therefore electric arc is difficult to independently extinguish, thus forms persistent failure.
" jet-propelled parallel connection clearance device (201210389771.5) proposes the active arc extinguishing parallel connection gaps of a kind of band air jet system to patent；This device adds the designs such as arc extinguishing powder storeroom, insulation aerogenesis room and spray arc passage on the basis of conventional parallel gap；After parallel connection gaps causes flashover because of thunderbolt circuit, air jet system actively ejects high speed arc extinguishing powder, quickly by arc extinction in transient state；This device needs periodically to add, change arc extinguishing powder, and later stage O&M is had higher requirement.
HVDC transmission system is under monopole operating mode or asymmetric operation mode, and ground electrode circuit is by the DC current by up to kilo-ampere；Under this method of operation, if ground electrode circuit insulator chain because of thunderbolt circuit generation flashover after, the DC current of ground electrode circuit by this flashover passage, via shaft tower enter ground, and insulator chain two ends formed persistence direct-current arc；It is different from alternating current arc, owing to direct-current arc electric current is without zero crossing, it is impossible to independently extinguish, easily causes persistent failure；And the direct-current arc of persistence will burn parallel connection gaps electrode and the insulator chain two ends gold utensil in parallel with shunt electrodes, and then ground electrode circuit wire is occurred to fall to go here and there fault；In recent years, having there is such fault a lot of in China, causes huge economic loss；Therefore, the parallel connection gaps of traditional structure and arrangement are not particularly suited for shape high voltage DC earthing pole circuit, and the active arc extinguishing parallel connection gaps of band air jet system then needs periodic maintenance.
In sum, present inventor in realizing the embodiment of the present application during inventive technique scheme, finds that above-mentioned technology at least exists following technical problem:
In the prior art, the parallel connection gaps of existing traditional structure and arrangement are not particularly suited for shape high voltage DC earthing pole circuit, and the active arc extinguishing parallel connection gaps of band air jet system then needs the technical problem of periodic maintenance.
Summary of the invention
The invention provides a kind of ground electrode circuit condenser type and release energy inter space device and installation method thereof, the parallel connection gaps and the arrangement that solve existing traditional structure are not particularly suited for shape high voltage DC earthing pole circuit, the active arc extinguishing parallel connection gaps of band air jet system then needs the technical problem of periodic maintenance, achieve and fault while effectively releasing energy, can be cannot be easily caused, and without the technique effect of periodic maintenance.
For solving above-mentioned technical problem, the application on the one hand provide a kind of ground electrode circuit condenser type release can inter space device, described in release and can include by inter space device:
Impact capacitor, side of wire electrode, shaft tower lateral electrode, metal link rod, current feed, supports insulative son, wherein, supports insulative is arranged on shaft tower, impact capacitor is fixed on supports insulative, metal link rod one end is connected with the high-pressure side of impact capacitor, the other end of metal link rod is connected with shaft tower lateral electrode, current feed one end is connected with the low-pressure end of impact capacitor, the other end of current feed is connected with shaft tower tower body, and side of wire electrode is fixed on the lower section of shaft tower insulator chain conductor wire end by gold utensil.
Wherein, in the application, ground electrode circuit condenser type releases the operation principle of energy inter space device is that refer to Fig. 1, Fig. 1 is that condenser type releases energy inter space device circuit theory diagrams, wherein, 1a-insulator chain equivalent gap；2a-insulator chain equivalent capacity；3a-parallel connection gaps；4a-parallel connection gaps equivalent capacity；5a-impacts capacitor；6a-cross-arm above tower body equiva lent impedance；7a-cross-arm and part shaft tower tower body equiva lent impedance；Equiva lent impedance bottom 8a-shaft tower；9a-impedance ground；10a-ground electrode circuit wire；11a-ground electrode circuit ground wire.
nullWherein，Gap composition parallel connection gaps between side of wire electrode and shaft tower lateral electrode，Insulator chain equivalent gap one end tower body above with cross-arm equiva lent impedance is connected with ground electrode circuit ground wire after being connected，The insulator chain equivalent gap other end is connected with parallel connection gaps one end，The parallel connection gaps other end is connected with impact capacitor one end，The impact capacitor other end is connected with equiva lent impedance bottom shaft tower，Ground connection after equiva lent impedance is connected with impedance ground bottom shaft tower，Insulator chain equivalent gap two ends are parallel with insulator chain equivalent capacity，Parallel connection gaps two ends are parallel with parallel connection gaps equivalent capacity，Cross-arm and part shaft tower tower body equiva lent impedance one end tower body above with cross-arm equiva lent impedance are connected，Cross-arm and the part shaft tower tower body equiva lent impedance other end are connected with equiva lent impedance bottom shaft tower，Ground electrode circuit wire is connected between insulator chain equivalent gap and parallel connection gaps.
Wherein, condenser type is released the operation principle of energy inter space device circuit and is: after ground electrode circuit suffers higher magnitude thunderbolt, releases the parallel connection gaps of energy inter space device prior to insulator chain flashover；The impact capacitor releasing energy inter space device constitutes oscillation circuit by flashover passage with ground electrode circuit, shaft tower impedance, impedance ground so that flashover channel current repeatedly zero passage, promotes flashover arc arc extinguishing；Even if flashover arc fails to extinguish in the duration of oscillation, impact capacitor also can block the direct current of electric arc after oscillatory process and maintain electric current, thus extinguishes electric arc.
Wherein, described side of wire electrode is specially circular electrode, provides running path for electric arc root, prevents the same position of the long-term ablation of electric arc root, causes electrode damage.
Wherein, the 75% to 85% of parallel connection gaps a size of insulator chain dry arcing distance, it is ensured that condenser type is released and prior to insulator chain flashover, and can be mounted with that condenser type is released and can reduce limitation by the ground electrode circuit dielectric level after inter space device by inter space device.
Wherein, described shaft tower lateral electrode is specially arc-shaped electrode.Parallel connection gaps electrode uses outside arcuate structure, and electric arc moves out, beneficially arc extinction.
Wherein, impact capacitor be can the high-voltage capacitor of discharge and recharge in short-term, after parallel connection gaps flashover, it constitutes oscillation circuit with ground electrode circuit, shaft tower impedance, impedance ground so that flashover channel current repeatedly zero passage, promotes flashover arc arc extinguishing；And the direct current that can block electric arc maintains electric current, thus extinguish electric arc.
On the other hand, present invention also provides a kind of ground electrode circuit condenser type and release energy inter space device installation method, described installation method includes:
Step 1: install supports insulative of fixing shaft tower lateral electrode；
Step 2: side of wire electrode is fixed on by gold utensil the lower section of shaft tower insulator chain conductor wire end；
Step 3: install shaft tower lateral electrode, and adjust parallel connection gaps size；
Step 4: install supports insulative of impact capacitor on shaft tower, and impact capacitor is fixed on supports insulative；
Step 5: use metal link rod to connect impact capacitor high-pressure side and shaft tower lateral electrode, uses current feed to connect impact capacitor low-pressure end and shaft tower tower body.
Wherein, described step 1 also includes estimating size, the position of design shaft tower lateral electrode according to shaft tower tower head structure, insulator chain length, parallel connection gaps.
Wherein, described side of wire electrode is specially circular electrode.
Wherein, the 75% to 85% of parallel connection gaps a size of insulator chain dry arcing distance.
The one or more technical schemes provided in the embodiment of the present application, at least have the following technical effect that or advantage:
Ground electrode circuit condenser type is released can be designed as including by inter space device owing to have employed: impact capacitor, side of wire electrode, shaft tower lateral electrode, metal link rod, current feed, supports insulative, wherein, supports insulative is arranged on shaft tower, impact capacitor is fixed on supports insulative, metal link rod one end is connected with the high-pressure side of impact capacitor, the other end of metal link rod is connected with shaft tower lateral electrode, current feed one end is connected with the low-pressure end of impact capacitor, the other end of current feed is connected with shaft tower tower body, side of wire electrode is fixed on the technical scheme of the lower section of shaft tower insulator chain conductor wire end by gold utensil, i.e. after ground electrode circuit suffers higher magnitude thunderbolt, release the parallel connection gaps of energy inter space device prior to insulator chain flashover；The impact capacitor releasing energy inter space device constitutes oscillation circuit by flashover passage with ground electrode circuit, shaft tower impedance, impedance ground so that flashover channel current repeatedly zero passage, promotes flashover arc arc extinguishing；Even if flashover arc fails to extinguish in the duration of oscillation, impact capacitor also can block the direct current of electric arc after oscillatory process and maintain electric current, thus extinguish electric arc, so, the parallel connection gaps and the arrangement that efficiently solve existing traditional structure are not particularly suited for shape high voltage DC earthing pole circuit, the active arc extinguishing parallel connection gaps of band air jet system then needs the technical problem of periodic maintenance, it is achieved that can cannot be easily caused fault while effectively releasing energy, and without the technique effect of periodic maintenance.
Further, during parallel connection gaps flashover, impact capacitor and lightning channel impedance, ground electrode circuit impedance constitute oscillation circuit, make to form vibration by the electric current in gap, and repeatedly zero passage, beneficially flashover arc are extinguished.
Further, after electric arc is set up, parallel connection gaps electrode uses outside arcuate structure, and electric arc moves out, beneficially arc extinction.
Further, after electric arc is set up, the DC current that mainly flow through by ground electrode circuit of energy of pilot arc burning provides, due to impact capacitor every straight effect, the electric current in gap in parallel can be reduced rapidly, thus extinguish electric arc.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by the embodiment of the present invention, constitutes the part of the application, is not intended that the restriction to the embodiment of the present invention；
Fig. 1 be use after the present invention release can electrical structure principle schematic；
Fig. 2 is the flashover current simulation result schematic diagram using conventional parallel gap；
Fig. 3 is the flashover current simulation result schematic diagram releasing energy inter space device using the present invention；
Fig. 4 is that the electric arc direct current using conventional parallel gap maintains current simulations result schematic diagram；
Fig. 5 is that the electric arc direct current releasing energy inter space device using the present invention maintains current blocking simulation result schematic diagram；
Fig. 6 is the scheme of installation that condenser type releases energy inter space device；
Fig. 7 is that ground electrode circuit condenser type releases energy inter space device installation method schematic flow sheet；
Wherein, 1a-insulator chain equivalent gap；2a-insulator chain equivalent capacity；3a-parallel connection gaps；4a-parallel connection gaps equivalent capacity；5a-impacts capacitor；6a-cross-arm above tower body equiva lent impedance；7a-cross-arm and part shaft tower tower body equiva lent impedance；Equiva lent impedance bottom 8a-shaft tower；9a-impedance ground；10a-ground electrode circuit wire；11a-ground electrode circuit ground wire；1-impacts capacitor；2-side of wire circular electrode；3-shaft tower side arc-shaped electrode；4-metal link rod；5-current feed；6-supports insulative；The original insulator chain of 7-ground electrode circuit；8-ground electrode circuit wire；9-ground electrode circuit shaft tower.
Detailed description of the invention
The invention provides a kind of ground electrode circuit condenser type and release energy inter space device and installation method thereof, solve existing releasing and can there is the parallel connection gaps of traditional structure and arrangement is not particularly suited for shape high voltage DC earthing pole circuit by inter space device, the active arc extinguishing parallel connection gaps of band air jet system then needs the technical problem of periodic maintenance, achieve and fault while effectively releasing energy, can be cannot be easily caused, and without the technique effect of periodic maintenance.
In order to be better understood from technique scheme, below in conjunction with Figure of description and specific embodiment, technique scheme is described in detail.
Below in conjunction with specific embodiment and accompanying drawing, the present invention is made detailed description further, but embodiments of the present invention are not limited to this.
Embodiment one:
Refer to Fig. 1-Fig. 7, this application provides a kind of capacitive releasing can inter space device, it is mainly by impacting capacitor and parallel connection gaps (equivalent circuit after installation is as shown in Figure 1) in series, including: impact capacitor, side of wire circular electrode, shaft tower side arc-shaped electrode, metal link rod, current feed.It provides the benefit that:
During parallel connection gaps flashover, impact capacitor and lightning channel impedance, ground electrode circuit impedance constitute oscillation circuit, make to form vibration by the electric current in gap, and repeatedly zero passage (Contrast on effect is as shown in Fig. 2-Fig. 3), beneficially flashover arc extinguish；
After electric arc is set up, parallel connection gaps electrode uses outside arcuate structure, and electric arc moves out, beneficially arc extinction；
After electric arc is set up, the DC current that mainly flow through by ground electrode circuit of energy of pilot arc burning provides, due to impact capacitor every straight effect, the electric current (Contrast on effect is as shown in fig. 4-5) in gap in parallel can be reduced rapidly, thus extinguish electric arc.
Releasing can inter space device installation method:
The present invention proposes a kind of condenser type and releases the installation method (as Figure 6-Figure 7) of energy inter space device.Side of wire circular electrode is fixed on the underface of insulator chain conductor wire end by gold utensil；Shaft tower side arc-shaped electrode and impact capacitor are fixed on shaft tower by supports insulative；It is connected by the high-pressure side of metal link rod with impact capacitor bottom the arc-shaped electrode of shaft tower side；The low-pressure end of impact capacitor is connected with tower body by current feed.It provides the benefit that:
Parallel connection gaps conspires to create " series connection " arrangement with insulator, the arc burning of parallel connection gaps will not Damage to insulation sub-surface, the connection gold utensil that more will not burn insulator chain and shaft tower causes string fault；
Parallel connection gaps can be adjusted to suitable dimension by regulation shaft tower side arc-shaped electrode；
Supports insulative is used to fix shaft tower side arc-shaped electrode and use metal link rod to connect, it is ensured that shaft tower side arc-shaped electrode, impact capacitor high-pressure side and the insulation distance of shaft tower.
First estimate size, the position of design shaft tower side arc-shaped electrode according to shaft tower tower head structure, insulator chain length, parallel connection gaps, supports insulative of fixing shaft tower side arc-shaped electrode is installed；Side of wire circular electrode is fixed on by gold utensil the underface of insulator chain conductor wire end；Shaft tower side arc-shaped electrode is installed and fine setting guarantees the 75% ~ 85% of parallel connection gaps a size of insulator chain dry arcing distance；
Shaft tower is installed supports insulative of impact capacitor, and impact capacitor is fixed on supports insulative；
Metal link rod is used to connect impact capacitor high-pressure side and shaft tower side arc-shaped electrode；
Current feed is used to connect impact capacitor low-pressure end and shaft tower tower body.
Technical scheme in above-mentioned the embodiment of the present application, at least has the following technical effect that or advantage:
Ground electrode circuit condenser type is released can be designed as including by inter space device owing to have employed: impact capacitor, side of wire electrode, shaft tower lateral electrode, metal link rod, current feed, supports insulative, wherein, supports insulative is arranged on shaft tower, impact capacitor is fixed on supports insulative, metal link rod one end is connected with the high-pressure side of impact capacitor, the other end of metal link rod is connected with shaft tower lateral electrode, current feed one end is connected with the low-pressure end of impact capacitor, the other end of current feed is connected with shaft tower tower body, side of wire electrode is fixed on the technical scheme of the lower section of shaft tower insulator chain conductor wire end by gold utensil, i.e. after ground electrode circuit suffers higher magnitude thunderbolt, release the parallel connection gaps of energy inter space device prior to insulator chain flashover；The impact capacitor releasing energy inter space device constitutes oscillation circuit by flashover passage with ground electrode circuit, shaft tower impedance, impedance ground so that flashover channel current repeatedly zero passage, promotes flashover arc arc extinguishing；Even if flashover arc fails to extinguish in the duration of oscillation, impact capacitor also can block the direct current of electric arc after oscillatory process and maintain electric current, thus extinguish electric arc, so, efficiently solve existing releasing and can there is the parallel connection gaps of traditional structure and arrangement is not particularly suited for shape high voltage DC earthing pole circuit by inter space device, the active arc extinguishing parallel connection gaps of band air jet system then needs the technical problem of periodic maintenance, achieve and fault while effectively releasing energy, can be cannot be easily caused, and without the technique effect of periodic maintenance.
Further, during parallel connection gaps flashover, impact capacitor and lightning channel impedance, ground electrode circuit impedance constitute oscillation circuit, make to form vibration by the electric current in gap, and repeatedly zero passage, beneficially flashover arc are extinguished.
Further, after electric arc is set up, parallel connection gaps electrode uses outside arcuate structure, and electric arc moves out, beneficially arc extinction.
Further, after electric arc is set up, the DC current that mainly flow through by ground electrode circuit of energy of pilot arc burning provides, due to impact capacitor every straight effect, the electric current in gap in parallel can be reduced rapidly, thus extinguish electric arc.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creative concept, then these embodiments can be made other change and amendment.So, claims are intended to be construed to include preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification without departing from the spirit and scope of the present invention to the present invention.So, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. release can inter space device for a ground electrode circuit condenser type, it is characterised in that described in release and can include by inter space device:
Impact capacitor, side of wire electrode, shaft tower lateral electrode, metal link rod, current feed, supports insulative, wherein, supports insulative is arranged on shaft tower, impact capacitor is fixed on supports insulative, metal link rod one end is connected with the high-pressure side of impact capacitor, the other end of metal link rod is connected with shaft tower lateral electrode, current feed one end is connected with the low-pressure end of impact capacitor, the other end of current feed is connected with shaft tower tower body, and side of wire electrode is fixed on the lower section of ground electrode circuit shaft tower insulator chain conductor wire end by gold utensil.
Ground electrode circuit condenser type the most according to claim 1 is released can inter space device, it is characterised in that described energy release device discharge loop is by impacting capacitor and parallel connection gaps is in series.
Ground electrode circuit condenser type the most according to claim 1 releases energy inter space device, it is characterised in that described side of wire electrode is specially circular electrode.
Ground electrode circuit condenser type the most according to claim 1 releases energy inter space device, it is characterised in that the 75% to 85% of parallel connection gaps a size of insulator chain dry arcing distance.
Ground electrode circuit condenser type the most according to claim 1 releases energy inter space device, it is characterised in that described shaft tower lateral electrode is specially arc-shaped electrode.
6. a ground electrode circuit condenser type releases energy inter space device installation method, it is characterised in that described installation method includes:
Step 1: install supports insulative of fixing shaft tower lateral electrode；
Step 2: side of wire electrode is fixed on by gold utensil the lower section of shaft tower insulator chain conductor wire end；
Step 3: install shaft tower lateral electrode, and adjust parallel connection gaps size；
Step 4: install supports insulative of impact capacitor on shaft tower, and impact capacitor is fixed on supports insulative；
Step 5: use metal link rod to connect impact capacitor high-pressure side and shaft tower lateral electrode, uses current feed to connect impact capacitor low-pressure end and shaft tower tower body.
Ground electrode circuit condenser type the most according to claim 6 releases energy inter space device installation method, it is characterised in that described step 1 also includes estimating size, the position of design shaft tower lateral electrode according to shaft tower tower head structure, insulator chain length, parallel connection gaps.
Ground electrode circuit condenser type the most according to claim 6 releases energy inter space device installation method, it is characterised in that described side of wire electrode is specially circular electrode.
Ground electrode circuit condenser type the most according to claim 6 releases energy inter space device installation method, it is characterised in that the 75% to 85% of parallel connection gaps a size of insulator chain dry arcing distance.
Ground electrode circuit condenser type the most according to claim 6 releases energy inter space device installation method, it is characterised in that described shaft tower lateral electrode is specially arc-shaped electrode.
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| CN201610455485.2A CN105932547B (en) | 2016-06-22 | 2016-06-22 | A kind of ground electrode circuit condenser type is released can inter space device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1052392A (en) * | 1989-12-07 | 1991-06-19 | 株式会社日立制作所 | Lightning arrester on tower for power transmission |
| JP2009232629A (en) * | 2008-03-25 | 2009-10-08 | Mitsubishi Electric Corp | Surge absorbing circuit |
| CN204289168U (en) * | 2014-12-23 | 2015-04-22 | 深圳蓝波绿建集团股份有限公司 | A kind of DC circuit breaker |
| CN104882876A (en) * | 2015-06-19 | 2015-09-02 | 中国电力科学研究院 | Extra-high voltage DC grounding electrode circuit protection system |
| CN205680926U (en) * | 2016-06-22 | 2016-11-09 | 国网四川省电力公司电力科学研究院 | A kind of ground electrode circuit condenser type is released can inter space device |
-
2016
- 2016-06-22 CN CN201610455485.2A patent/CN105932547B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1052392A (en) * | 1989-12-07 | 1991-06-19 | 株式会社日立制作所 | Lightning arrester on tower for power transmission |
| JP2009232629A (en) * | 2008-03-25 | 2009-10-08 | Mitsubishi Electric Corp | Surge absorbing circuit |
| CN204289168U (en) * | 2014-12-23 | 2015-04-22 | 深圳蓝波绿建集团股份有限公司 | A kind of DC circuit breaker |
| CN104882876A (en) * | 2015-06-19 | 2015-09-02 | 中国电力科学研究院 | Extra-high voltage DC grounding electrode circuit protection system |
| CN205680926U (en) * | 2016-06-22 | 2016-11-09 | 国网四川省电力公司电力科学研究院 | A kind of ground electrode circuit condenser type is released can inter space device |
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