CN105453354A - Multi-electrode discharging screen - Google Patents
Multi-electrode discharging screen Download PDFInfo
- Publication number
- CN105453354A CN105453354A CN201580000561.4A CN201580000561A CN105453354A CN 105453354 A CN105453354 A CN 105453354A CN 201580000561 A CN201580000561 A CN 201580000561A CN 105453354 A CN105453354 A CN 105453354A
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- China
- Prior art keywords
- lightning arrester
- transmission line
- power transmission
- main body
- insulating properties
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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
- H01T4/02—Details
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
Abstract
Proposed is a discharging screen for the lightning protection of components of an electrical system or transmission line and the equalization of an electric field. The discharging screen comprises an insulating body designed for mechanical attachment to a component of an electrical system or transmission line. The insulating body has a shape which enables it to bend at least partially around the aforesaid component of an electrical system or transmission line with the formation of an air gap between the insulating body and the component of an electrical system or transmission line. Mechanically connected to the insulating body are two main electrodes and two or more intermediate electrodes, which are situated between the main electrodes such that a discharge can be generated between the main electrodes and the intermediate electrodes adjacent thereto and between adjacent intermediate electrodes.
Description
Technical field
The present invention relates to installation protection annex on an electronic device, be especially arranged on the protection annex on insulator and insulator string, it is for electric arc and/or corona discharge protection, and/or for evening up the voltage's distribiuting on insulator or insulator string.In addition, the present invention relates to the lightning arrester of the atmospheric over voltage protection for electronic equipment.Such equipment can provide the protection of the element for high-pressure installation, insulator and other power transmission line and electronic equipment.
Background technology
International application WO2010082861 discloses a kind of thunder and lightning lightning arrester of the element for the protection of electronic equipment or power transmission line; it comprises insulating properties main body, two main electrodes and two or more targets; this insulating properties main body is configured to the element of mechanical attachment to electronic equipment or power transmission line; these two main electrodes and insulating properties main body mechanical attachment; these two or more targets and insulating properties main body mechanical attachment; be arranged between main electrode, and be configured to expansion electric discharge between main electrode and adjacent target and between adjacent target.
This known thunder and lightning lightning arrester provides the successful protection for thunder discharge.But it can not voltage's distribiuting on balanced insulation body string, electric field strength can not be distributed along polymer insulator.Therefore, it can not protect the element of electronic equipment or power transmission line to avoid corona discharge.
Summary of the invention
A target of the present invention is to provide reliably, the equipment of low production cost; this equipment can protect the element of electronic installation or power transmission line to avoid lightning overvoltage event, and can improve the distribution of the electric field strength of the described component ambient at the electronic installation or power transmission line having installed this equipment.In other words, target of the present invention is, provides the equipment be combined with the attribute of corona ring by the attribute of lightning arrester.
Target of the present invention is realized by following lightning arrester; this lightning protected lightning arrester being used for the element of electronic equipment or power transmission line comprises: insulating properties main body; it is configured to the element of mechanical attachment to electronic equipment or power transmission line, and guarantees at least one element wrapping up electronic equipment or power transmission line at least partly.Lightning arrester comprises two main electrodes further, itself and insulating properties main body mechanical attachment; And two or more targets, itself and insulating properties main body mechanical attachment, described target to be arranged between main electrode along insulating properties main body and to be configured to organize the electric discharge between main electrode and adjacent target and between adjacent target.Valuably, the parcel of insulating properties main body to the element of electronic equipment or power transmission line is guaranteed by the gap at parcel location place between other parts and the described element of electronic equipment or power transmission line of insulating properties main body, electrode and lightning arrester.
In one embodiment, the part that the described element for electronic equipment or power transmission line guaranteed by insulating properties main body carries out circle or the ball wrapped up covers the angle comprised to 30,60,90,120,150,180,210,240,270,300,330 or 360 degree.
In preferred embodiments, at least one main electrode comprises joint, and described joint is outstanding or extension from the surface of insulating properties main body.Preferably, target is arranged with the mutual displacement at least along insulating properties main body.In preferred embodiments, described lightning arrester comprises clamp structure, and this clamp structure is for providing the attachment of the element being attached to electronic equipment or power transmission line.
In some embodiments, can arc chamber be set between target and main electrode and/or arc chamber is set between target.At some in other embodiment, described target can be coated with insulating barrier, and the arc chamber being exposed to surface of insulating layer is arranged between adjacent target.Under these circumstances, described main electrode can be coated with insulating barrier at least partly, and the arc chamber being exposed to surface of insulating layer is arranged between target and main electrode.
In preferred embodiments, the bending rigidity coefficient of described insulating properties main body is not less than 1N/m, 10N/m, 25N/m, 50N/m, 75N/m, 100N/m, 200N/m, 300N/m, 400N/m, 500N/m or 1000N/m.
Target of the present invention is also realized by following power transmission line, and this power transmission line comprises: the electric pole with insulator; At least one live wire, it is connected with insulator by securing member; And at least one lightning arrester, its element for electronic equipment or power transmission line lightning protected.The feature of such power transmission line comprises, and the lightning arrester wherein used is implemented as the lightning arrester according to any one in above-mentioned embodiment.Described lightning arrester can be installed on insulator by attachment members, and the discharge voltage between main electrode and target is preferably less than the discharge voltage between main electrode and the element of electronic equipment or power transmission line.
The technique effect realized comprises; because protect the lightning arrester of the element of electronic equipment or power transmission line can also improve the electric field structure of described component ambient for thunder discharge overvoltage; thus serve as corona ring, so reduce the cost of the reliability service that electronic installation or power transmission line are provided.This makes it possible to be avoided the extras of the electric-field intensity distribution for improving the component ambient be subject to for the electronic equipment of thunder discharge protection, power transmission line, electrical insulator or insulator string, because corona ring lightning arrester can be arranged on almost on any equipment.An extra technique effect is, provide be easy to be arranged in power transmission line or electronic installation for lightning protected equipment.
In addition; technique effect of the present invention comprises; because electrode is generally arranged on (away from shielded element) on the outer surface of corona ring; so add the voltage of the corona discharge occurred on corona ring surface, this makes electric field strength reduce due to the electric field strength distribution more extended in space.When corona ring comprises elongation type interior metal conductive part, owing to there is insulating barrier on the metallic core of corona ring, so the probability that corona discharge occurs also reduced.Now, significantly decline with the radio frequency interference level of power transmission line.In addition, due to the combination of corona ring and lightning arrester, the space occupied by these elements can be reduced, because the function of corona ring and lightning arrester is performed by individual equipment (instead of two equipment) now.
Accompanying drawing explanation
The present invention is illustrated by accompanying drawing, in the accompanying drawings:
Fig. 1 shows the first embodiment according to lightning arrester of the present invention.
Fig. 2 shows the second embodiment according to lightning arrester of the present invention.
Fig. 3 shows embodiment corona ring lightning arrester according to the present invention being arranged on the power transmission line on polymer insulator.
Fig. 4 shows the embodiment of the device of the bending rigidity coefficient of the corona ring lightning arrester dielectric components for determining to be in initial condition.
Fig. 5 shows the embodiment of the device of the bending rigidity coefficient of the lightning arrester dielectric components for determining to be in the state being applied with bending force.
Element similar in accompanying drawing is represented by similar Reference numeral, if drawings describe an element with reference to one, then can omit with reference to the description of other accompanying drawing to this element.
Embodiment
Fig. 1 shows the first embodiment according to lightning arrester of the present invention.This lightning protected lightning arrester being used for the element of electronic equipment or power transmission line is manufactured to the form of corona ring, and this corona ring is for evening up the electric field strength of the component ambient (that is, near this element) of electronic equipment or power transmission line.Lightning arrester is generally manufactured by hard dielectric, and as insulating properties main body 2, this insulating properties main body 2 is configured to mechanical attachment to the described element of electronic equipment or power transmission line or adjacent elements.Attachment can be carried out in every way, such as, by the shape (such as, rectilinear form, curve shape, annular, spirality etc.) of insulating properties main body in attachment point.In addition, insulating properties main body can have convex/concave/hole etc., provides attachment when its component for the element at collaboration securing member or electronic equipment or power transmission line.In the particular shown in Fig. 1, lightning arrester comprises end 1, end 1 has circle segment 3, by the end of insulating properties main body relative to each other fixing, or the element fixed around electronic equipment or power transmission line by being produced by elastic force, this circle segment 3 may be used for element lightning arrester being attached to electronic equipment or power transmission line.In other embodiments, the end of insulating properties main body can be rectilinear, and the element of electronic equipment or power transmission line can have attachment members, and attachment members is fixed by the end 1 of corona ring.
Preferably, corona ring should have enough mechanical strengths (hardness).It is necessary that mechanical strength (hardness) maintains its shape for corona ring.Because the corona ring parcel element of electronic equipment or the part of power transmission line are in the state of suspension, if so sufficient mechanical strength/stiffness is not enough, then this part will be tending towards moving down earthward, and therefore corona ring will not have the performance of the required Electric Field Distribution of establishment (correction), because the shape of corona ring will be different from predetermined shape, and predetermined shape is necessary for the Electric Field Distribution needed for producing.Corona ring strength/hardness can be guaranteed by the mechanical attributes of such as elongation type conductive part and/or the insulating barrier that it applies.
Insulating properties main body can comprise girth member, according to an embodiment, and the stiff rod of form such as arranging along insulating properties main body (such as in insulating properties main body) of this girth member.Girth member is intended to for corona ring lightning arrester provides necessary Intensity attribute, specifically, in order to maintain corona ring lightning arrester shape and in order to ensure required equipment hardness on the whole, and provide necessary Intensity attribute.Described girth member can be manufactured to the form of dielectric device, such as polymer element, the necessary impedance that corona ring lightning arrester is out of shape under gravity resisted by this element under being provided in mountain area condition, there is provided opposing corona ring lightning arrester at other element by power transmission line (such as, the electric wire contacted unintentionally) the necessary impedance of distortion under the power effect that applies, there is provided opposing corona ring lightning arrester wind and/or rain and animal, bird, people or other factors are (such as, the storage that corona ring lightning arrester can be caused to be out of shape and transportation condition) action effect under the necessary impedance of distortion.In other embodiments, if guarantee enough intensity and/or hardness, or the short circuit of if there is no target, or the electrical contact preferably if there is no between girth member and target, then girth member can use metal manufacture.
In other embodiments, insulating properties main body can comprise elastic component, according to an embodiment, and the elastic rod of form such as arranging along insulating properties main body (such as in insulating properties main body) of this elastic component.Elastic component is intended to the resilient property guaranteeing corona ring lightning arrester, that is, after the power removing the distortion causing corona ring lightning arrester, recover the performance of its shape.Elastic component also allows Reducing distortion between deformation force action period.If provide the necessary elasticity of shape for recovering corona ring lightning arrester when rock deformation pressure stops, and/or provide the amplitude of Reducing distortion between deformation force action period, then elastic component can use dielectric material (such as, polymer) and metal material manufacture.If elastic component uses metal to manufacture, then should guarantee that the short circuit of target does not exist, the electrical contact especially between elastic component and target does not exist.In particular embodiments, insulating properties main body self can guarantee necessary intensity and/or resilient property and/or required rigidity.
Fig. 2 shows the embodiment of the lightning arrester of the component 7 of the element comprised for lightning arrester being attached to electronic equipment or power transmission line.Described attachment members 7 is arranged on the rod-shaped elements of the end being incorporated into insulating properties main body 2, and allow (using bolt, screw, clamp and other joint element) to be extruded the element of electronic equipment or power transmission line by the element of component 7, thus corona ring is fixed on described element.Making on its element being arranged on electronic equipment or power transmission line simply according to the simple attachment of lightning arrester of the present invention like this.
Insulating properties main body 2 be configured at least part of parcel (around) it is wanted the electronic equipment of installing insulating main body or the element of power transmission line or such as along the circuit of the elements extend of described electronic equipment or power transmission line.This parcel be generally by the shape of insulating properties main body and/or by like this on the element of electronic equipment or power transmission line or near arrange insulating properties main body to obtain, wherein, insulating properties main body at least wraps up the element of described electronic equipment or power transmission line in the circle of part or solid angle.At least part of insulating properties main body (thus; corona ring is on the whole) shape of circle/dish/ellipse/annular can be had; or can be the fan section of circle/dish/ellipse/annular; and wrap up/be considered to such configuration around configuration: in the configuration; shielded element or be such as positioned at circle/dish/ellipse/loop coil along the line of shielded elements extend or be positioned at circle/dish/ellipse/toroidal fan section (preferably, being positioned at geometric center).In addition, the configuration of foundation electronic equipment (namely, Electric Field Distribution), insulating properties main body (thus corona ring is on the whole) at least partially can have parabola, hyperbola and other secondary and the shape with the curve of necessary sized of more high order arbitrarily.
In addition, in one of embodiment, parcel preferably completes in the plane of the principal direction of the stave perpendicular to electronic installation or power transmission line, but, except the right angle between described direction and plane, other angle can also be used (such as, on to 15,30,45,60,75,80,85 degree, or it can be any angle such as in the scope from 30 to 90 degree), or parcel can not occur in the plane, and can be curve.There is insulating properties main body and 180 degree are preferably not less than to the circle of element parcel of electronic equipment or power transmission line or the part of solid angle (ball), and can comprise to 210,240,270,300,330 or 360 degree, or can be any scope (such as, 180-360 degree or other scope any) formed by above-mentioned value.This angle is mainly determined based on the position of the point of corona ring attachment or the element (Electric Field Distribution around it will be corrected by corona ring) of electronic equipment or power transmission line.If corona ring defines plane; then the initial point of angular surveying can be defined as the intersection point (its central point or axle) of the element of this plane and shielded electronic equipment or power transmission line; or whole line segments of distance corona ring point farthest (if corona ring is with dish or round form manufacture, then this will be center of dish or circle) in plane.Electrode on corona ring can occupy the angle less than insulating properties main body.In some embodiments, according to should reformed electric field (such as, its intensity level), part or the solid angle of the insulating properties main body parcel element of electronic equipment or the circle of power transmission line can be less than 180 degree, and can comprise to or be greater than 30,60,90,120,150 or 180 degree, or can be any scope (such as, 30-180 degree or other scope any) formed by above-mentioned value.
Described parcel is considered to, when there is air gap between insulating properties main body and the element of electronic equipment or power transmission line, namely when on element lightning arrester being arranged on electronic equipment or power transmission line, guarantee that the wrapping portion of insulating properties main body keeps and described element spacing certain distance, instead of adjoin this element (naturally, insulating properties main body adjoins the element it securing this insulating properties main body for the part be attached).Valuably, corona ring has toroidal, but, other corona ring also can be used to configure, such as fan-shaped, oval etc.
According to the present invention, lightning arrester comprises two main electrodes 4 and 9, and two main electrodes 4 and 9 are arranged on (that is, with insulating properties main body mechanical attachment) in insulating properties main body 2.In addition, lightning arrester comprises two or more targets 5, and it is also arranged in insulating properties main body 2, between main electrode 4 and 9.It is set to, and electric discharge can be expanded between main electrode and adjacent target; The possibility of electric discharge expansion is also ensure that between adjacent target.The possibility of electric discharge is mainly by being positioned at distance enough for the electrical breakdown of discharging gap by electrode.As depicted in figs. 1 and 2, in order to be arranged between main electrode by target along curve or bending insulating properties main body, target can with at least mutual displacement and arranging on the longitudinal direction of insulating properties main body.
Although main electrode can have flat or other shape any (in some instances, its shape can be similar to the shape of target), but one or more main electrode can comprise joint (projection), this joint is outstanding (namely from the surface of insulating properties main body, in some directions away from insulating properties main body, some directions are normally side direction or parallel direction for the electronic equipment installing lightning arrester or power transmission line).By formed be enough discharging gaps for puncturing, namely the distance by reducing between electrode and/or between object that electrode and flashing discharge, such joint contributes to overvoltage and is input to lightning arrester, or contribute to overvoltage to export from lightning arrester, thus reduce discharge voltage and increase especially through the probability that the electric discharge of these discharging gaps (convexing to form at these discharging gaps) is expanded.In addition, described joint may be used for providing connection with protected or earth element by conductor (such as, electric wire, cable etc.).
Have the electrode of the form of conductor disposed thereon due to lightning arrester, so this lightning arrester starts to serve as corona ring, it is provided in the improvement of the electric field structure having installed the electronic equipment of lightning arrester or the component ambient of power transmission line.Although the electrode be arranged in insulating properties main body does not have electrical connection, but their electromotive force will trend towards reaching the potential level of having installed the electronic equipment of lightning arrester or the element of power transmission line, because the electromotive force of the element of described electronic equipment or power transmission line changes according to industrial frequency, and there is quite high capacitive coupling between this element and electrode of lightning arrester.
Because lightning arrester according to the present invention also serves as corona ring, so it can be called corona ring lightning arrester or be only called corona ring.Such as extend along insulating properties main body if electrode is manufactured to, then corona ring lightning arrester is more suitable for this function.In addition, if insulating properties body interior has Metallic rod, then due to the capacitive coupling with electronic equipment or power transmission line, these bars also affect the distribution of electric field, and lightning arrester will serve as corona ring.
Because the electrode in insulating properties main body can be arranged on optional position (if allowing electric discharge under excessive voltage condition in-between the electrodes), this allow for the extra degree of freedom in the improvement of the electric field structure of the component ambient of the electronic equipment installing lightning arrester according to of the present invention or power transmission line, therefore can in wide region, in a variety of forms, multiple direction, multiple part and electric field structure being modified with higher precision.
Fig. 1 also show the operation principle according to corona ring lightning arrester of the present invention.When overvoltage enters, by sparkover, left main electrode 4, overvoltage appears between this left main electrode 4 and adjacent target 5, and this has punctured the air gap between these electrodes.Then, the air gap be arranged between adjacent target 5 punctures 6, until overvoltage arrives shown in Fig. 1, on right side the second main electrode 9, overvoltage can be discharged to the earth, earth element from the second main electrode 9 or have the element of different electromotive force, is discharged to another lightning arrester etc.In addition, can be arranged between other element and other lightning arrester of main electrode and electronic equipment or power transmission line by electric wire and be connected.
The length of the discharging gap along the surface of insulating layer between main electrode and the element of electronic equipment or power transmission line is less than along the length at the discharging gap closest to the surface of insulating layer between the target of main electrode and main electrode.Discharge voltage between main electrode and target should be less than the discharge voltage of the atmospherical discharges between the element of main electrode and electronic equipment or power transmission line, so that the electric discharge of lightning overvoltage can be stretched along target instead of directly pass the element of air gap to electronic equipment or power transmission line.
In corona ring lightning arrester shown in the drawings, the angle that the parcel of insulating properties main body covers is in about 330 degree; But, because insulating properties main body extends to the center of circle to provide the part of attachment by circle closed (abutting one another), so the parcel in this situation can be thought cover 360 degree.
With reference to figure 2, target 12 can be arranged in insulating properties main body 2, and separates a little with insulating properties main body 2.Such as by being introduced into the end of electrode 12 in the end cap 14 that manufactured by dielectric material, can arrange arc chamber between electrode 12, described end cap has the diapire and sidewall that limit arc chamber, and the outlet of arc chamber is preferably set to relative with bottom.Along with dielectric end cap 14 is attached to insulating properties main body 2 by its base section, which ensure that the mechanical attachment between target 12 and insulating properties main body 2.Occur in the arc chamber in dielectric end cap 14, between the end of the target 12 be projected in arc chamber electric discharge 13, leave arc chamber from insulating properties main body 2, preferably leave the element being connected to corona ring lightning arrester.But the outlet of one or more arc chamber can point to insulating properties main body, or sensing is connected to insulating properties main body or arranges nigh element.
Such as use dielectric end cap equally, arc chamber also can be arranged between target 12 and the first main electrode 4 (being presented on the left of Fig. 2) and between target 12 and the second main electrode 9 (being presented on the right side of Fig. 2), and between target.Main electrode can self be raised in the arc chamber of dielectric end cap, or it can have joint (as shown in Figure 2), and described joint is intended to create discharging gap (as same electrode) in the arc chamber arranged apart from main electrode a distance.In some embodiments, electric discharge from main electrode can be shocked by electricity and installed the electronic equipment of corona ring lightning arrester or the element of power transmission line, or electric shock is arranged on one or two end of insulating properties main body and the metallic attachment component 7 be preferably electrically connected with the element of electronic equipment or power transmission line.
In other embodiment, at least one target and/or main electrode can be arranged in the dielectric layer, or can be covered at least in part by insulating barrier.In these cases, the arc chamber on be exposed to insulating barrier or insulating properties main body surface is arranged in-between the electrodes.Under these circumstances, arc chamber self is formed in insulating barrier or insulating properties main body, and electrode projects in arc chamber to form discharging gap to each other simultaneously.The outlet of such arc chamber normally provides the hole of the connection on the surface of arc chamber and insulating barrier or insulating properties main body.
Fig. 3 shows power transmission line, and it comprises electric pole 18 (this electric pole has insulator 15); At least one live wire 19, it is connected to insulator 15 by securing member; And two corona ring lightning arresters 20, it is for dispersing the electric field strength near insulator 15, and described insulator is as the element (also can utilize in another electronic equipment) of power transmission line.Corona ring lightning arrester 20 is according to any one configuration in above-mentioned embodiment, and therefore, it also provides for the superpotential protection of thunder discharge for power transmission line, and the improvement of neighbouring electric field structure.In some embodiments, for an insulator or the element for another power transmission line, a corona ring lightning arrester can be installed or more than two corona ring lightning arresters.
When there is the thunder discharge for electric wire 19, overvoltage is transmitted to the lower prong 17 of insulator 15 through securing member.Corona ring lightning arrester 20 uses fastener assembly 7 to be arranged on most advanced and sophisticated 17; Described corona ring lightning arrester has insulating properties main body, is provided with the first main electrode 4 and multiple target at the top of insulating properties main body, and electrode 4 has towards the outstanding joint of the second corona ring lightning arrester.Discharge between target and fastener assembly 7, then between (under overvoltage) target in insulating properties main body, electric discharge 6 occurs, and overvoltage is transferred to main electrode 4 by this electric discharge.Due to electric discharge, the electromotive force of the main electrode 4 of lower corona ring lightning arrester becomes the electromotive force close to most advanced and sophisticated 17, thus close to the electromotive force of electric wire 19.
Because the electrical potential difference between the main electrode 4 of the upper corona ring be arranged on respectively on the tip 16 and 17 of insulator 15 and lower corona ring 20 is now close to puncturing overvoltage, so there is electrical atmospherical discharges 8 between the electrodes 4.In some embodiments, electrode 4 can be connected to each other by electric wire or extra electrode.
In addition, because the electrical potential difference between the first main electrode 4 of upper corona ring and target is established as close to overvoltage, between said electrodes and electric discharge 6 occurs between target, and overvoltage is passed to the upper prong 16 (insulator 15 has the connection with the earth conductor cable pipe of power transmission line) of fastener assembly 7 and insulator 15 by this electric discharge.Because the expansion of electric discharge and the transmission of thunder discharge occur enough fast, whole described electric discharge may exist simultaneously, makes to be transmitted to ground from the electric charge of lightning receptor.When power-frequency voltage passes zero, arc extinction, and power transmission line recovers its ability to work, and the electric discharge of corona ring simultaneously keeps being ready to thunder discharge overvoltage next time to turn to ground.
Corona ring lightning arrester is installed on insulator by clamp structure (it can be a part for corona ring, or can be the element be arranged on tip).For guaranteeing the availability of described equipment, desirably create such condition: the discharge voltage of the electric discharge between the element of main electrode and clamp structure or electronic equipment or power transmission line is greater than the discharge voltage of the electric discharge through the air gap main electrode and adjacent intermediate electrodes.
One of characteristic of the necessary mechanical attributes limiting corona ring (especially, insulating properties main body) is allowed to be bending rigidity.Such as, it can the method according to Fig. 4 and Fig. 5 be determined.According to the method, if corona ring can not bend, then corona ring 20 be in part under unbending straight line condition (such as, according to the type of insulating properties main body, inside has or does not have the insulating properties main body of bar) be placed on two strutting pieces 21, or for corona ring being produced as rectilinear workpiece or the experimental prototype identical with the insulating properties main body of corona ring lightning arrester is placed on two strutting pieces 21 with regard to structure and material, the difference of this prototype is only that it is rectilinear (if corona ring must bend or workpiece for corona ring must bend), two strutting pieces are set to mutual distance L, L equals the thickness d of such as corona ring (such as, there is the thickness of the elongation type conductive part of insulation) 10 to 20 times, namely, such as in the preferred variation shown in Fig. 4 and Fig. 5, L=20d is (because corona ring has circular cross section as a rule, thickness d can correspond to such as along the corona ring diameter of the outer surface measuring of insulating properties main body).
In addition, center is located between two strutting pieces 21 (preferably approximate, accurately be arranged in center) plane (corona ring 20 is placed on this plane), distortion hammer 25 is applied to corona ring 20 from top, power F is delivered to corona ring 20 by this distortion hammer, described power is intended to the skew h creating corona ring 20 downward (in this case, this direction is determined according to the measurement configuration of Fig. 4 and Fig. 5 instead of operative configuration).Due to the measurement to power F and skew (bending) h, can determine bending rigidity coefficient k=F/h, wherein, F-is applied to the power of dielectric element, the offset amplitude of h-dielectric element.
In preferred version, the offset amplitude h of dielectric element should measure in the bottom 24 of corona ring 20 below power F application point, because if corona ring (especially insulating properties main body) uses deformability (such as, flexible or soft) material manufacture, then in the top 23 of the corona ring 20 of the direct applying power F of distortion hammer 25, corona ring 20 may be there is (such as, insulating barrier) the distortion irrelevant with its skew, and in the bottom 24 of corona ring 20 below the application point of power F, such distortion can not be observed, because do not have power to be applied directly to described point, the surface displacement of the bottom 24 of the corona ring below the application point of power F may be only the result that corona ring 20 offsets.
About the possibility of the distortion had nothing to do with its skew of corona ring 20, if corona ring uses deformability (such as, flexible or soft) material manufacture, then be out of shape and not only caused by distortion hammer 25 but also caused by strutting piece 21, in order to prevent the lower surface caused by strutting piece 21 of corona ring 20 to be out of shape (deviation that this distortion may cause the amplitude offseting h), rigid spacers 22 can be placed between corona ring 20 and strutting piece 21.Distance piece 22 can be flat or channel-like.Distance piece 22 makes the deformation force from strutting piece 21 be distributed in the larger length of corona ring 20, thus reduces the deviation of the measured amplitude h of the skew of corona ring 20.Distance piece 22 preferably at random can change its angular position relative to strutting piece 21; In some cases, distance piece 22 and strutting piece 21 can have hinge type and be connected.Will be understood that, distance piece 22 and strutting piece 21 are manufactured by low deformability material (such as, compared to dielectric material).
When there is irreversible distortion when corona ring is exposed to power (such as, corona ring ruptures or breaks), corona ring can think crisp, inflexibility and/or its non-failed bending rigidity is enough high, and corona ring can not change arbitrarily its shape (when not losing efficacy).
In preferred embodiments, in order to prevent the shape changing corona ring, its minimum bending rigidity (bending rigidity coefficient) is not less than 1N/m, 10N/m, 25N/m, 50N/m, 75N/m, 100N/m, 200N/m, 300N/m, 400N/m, 500N/m or 1000N/m (according to for the manufacture of the material of corona ring, the shape and size of corona ring).
In this manual, word " has ", " comprising ", " comprising " etc. for representing to there are specific feature, element, parts, behavior, value etc., but it is not got rid of and occurs the appearance of one or more further feature, element, parts, behavior, value etc. or the possibility of interpolation.
The embodiment according to lightning arrester of the present invention disclosed in this specification and modification and use such lightning arrester to build corona ring lightning arrester just in order to its design clear and definite and operation principle provide.It will be obvious to those skilled in the art that within the scope of the claims be also possible with departing from of above-mentioned embodiment.
Claims (12)
1. a lightning arrester, its element for electronic equipment or power transmission line lightning protected, it comprises:
Insulating properties main body, it is configured to the element of mechanical attachment to electronic equipment or power transmission line, and guarantees the described element or the adjacent elements that wrap up electronic equipment or power transmission line at least partly,
Two main electrodes, itself and insulating properties main body mechanical attachment, and
Two or more targets, itself and insulating properties main body mechanical attachment, described target is arranged between main electrode along insulating properties main body, and is configured to organize the electric discharge between main electrode and adjacent target and between adjacent target.
2. lightning arrester according to claim 1, wherein, the part that the described element for electronic equipment or power transmission line guaranteed by insulating properties main body carries out circle or the ball wrapped up covers the angle comprised to 30,60,90,120,150,180,210,240,270,300,330 or 360 degree.
3. lightning arrester according to claim 1, wherein, at least one main electrode comprises joint, and described joint is given prominence to from the surface of insulating properties main body.
4. lightning arrester according to claim 1, wherein, target is arranged with the mutual displacement at least along insulating properties main body.
5. lightning arrester according to claim 1, wherein, described lightning arrester is included in the arc chamber between target and main electrode.
6. lightning arrester according to claim 1, wherein, described lightning arrester is included in the arc chamber between target.
7. lightning arrester according to claim 1, wherein, described target is coated with insulating barrier, and between adjacent target, be provided with the arc chamber being exposed to surface of insulating layer.
8. lightning arrester according to claim 7, wherein, described main electrode is coated with insulating barrier at least partly, and between target and main electrode, be provided with the arc chamber being exposed to surface of insulating layer.
9. lightning arrester according to claim 1, wherein, described lightning arrester comprises clamp structure, and this clamp structure is for providing its attachment to the element of electronic equipment or power transmission line.
10. lightning arrester according to claim 1, wherein, the bending rigidity coefficient of described insulating properties main body is not less than 1N/m, 10N/m, 25N/m, 50N/m, 75N/m, 100N/m, 200N/m, 300N/m, 400N/m, 500N/m or 1000N/m.
11. 1 kinds of power transmission lines, it comprises:
There is the electric pole of insulator,
At least one live wire, it is connected with insulator by securing member, and
At least one lightning arrester, its element for electronic equipment or power transmission line lightning protected,
Wherein, described lightning arrester is manufactured to the lightning arrester according to any one in claim 1-10.
12. power transmission lines according to claim 11, wherein, described lightning arrester is installed on insulator by attachment members, and the discharge voltage between main electrode and target is less than the discharge voltage between main electrode and the element of electronic equipment or power transmission line.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EA201400514A EA025205B1 (en) | 2014-04-30 | 2014-04-30 | Multi-electrode discharging screen |
| EA201400514 | 2014-04-30 | ||
| PCT/RU2015/000157 WO2015167360A1 (en) | 2014-04-30 | 2015-03-19 | Multi-electrode discharging screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105453354A true CN105453354A (en) | 2016-03-30 |
| CN105453354B CN105453354B (en) | 2018-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580000561.4A Active CN105453354B (en) | 2014-04-30 | 2015-03-19 | Multi-electrode corona ring arrester |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JP6253783B2 (en) |
| CN (1) | CN105453354B (en) |
| BR (1) | BR112015026421B1 (en) |
| EA (1) | EA025205B1 (en) |
| MX (1) | MX353664B (en) |
| MY (1) | MY178395A (en) |
| PH (1) | PH12015502403B1 (en) |
| SA (1) | SA515370009B1 (en) |
| WO (1) | WO2015167360A1 (en) |
| ZA (1) | ZA201507455B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114204508A (en) * | 2021-11-19 | 2022-03-18 | 国网浙江义乌市供电有限公司 | Grounding ring device of cable terminal |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111697525B (en) * | 2020-04-30 | 2021-09-28 | 中国电力科学研究院有限公司 | High-voltage split tube bus spacer corona discharge control method and system |
| US11896248B2 (en) | 2021-08-05 | 2024-02-13 | Nextern Innovation, Llc | Systems, devices and methods for generating subsonic pressure waves in intravascular lithotripsy |
| US11877761B2 (en) | 2021-08-05 | 2024-01-23 | Nextern Innovation, Llc | Systems, devices and methods for monitoring voltage and current and controlling voltage of voltage pulse generators |
| US11957369B2 (en) | 2021-08-05 | 2024-04-16 | Nextern Innovation, Llc | Intravascular lithotripsy systems and methods |
| WO2023015047A1 (en) * | 2021-08-05 | 2023-02-09 | Nextern Innovation, Llc | Lithoplasty balloon systems, devices and methods with electrode pairs having multiple spark gaps |
| US11801066B2 (en) | 2021-08-05 | 2023-10-31 | Nextern Innovation, Llc | Systems, devices and methods for selection of arc location within a lithoplasty balloon spark gap |
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| CN101981633A (en) * | 2008-03-27 | 2011-02-23 | Npo流光开放式股份公司 | High-voltage insulator and a high-voltage electric power line using said insulator |
| CN102349206A (en) * | 2009-01-19 | 2012-02-08 | Npo流光开放式股份公司 | Lighting arrester and a power transmission line provided with such an arrester |
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| US4665460A (en) * | 1983-03-03 | 1987-05-12 | Schaff Jean Paul | Device for protecting overhead electroconducting lines against lightning |
| JP3770994B2 (en) * | 1997-03-18 | 2006-04-26 | 日本碍子株式会社 | Current-limiting arc horn device |
| RU2299508C2 (en) * | 2005-03-04 | 2007-05-20 | Георгий Викторович Подпоркин | Current-carrying device for lightning protection of electrical equipment and power transmission lines equipped with such device |
| RU2346368C1 (en) * | 2007-08-16 | 2009-02-10 | ОАО "Научно-производственное объединение "Стример" | Lightning protector and power transmission line equipped therewith |
| SE532800C2 (en) * | 2008-03-28 | 2010-04-13 | Jeld Wen Sverige Ab | Method and apparatus for glazing door |
| DE112011105645B4 (en) * | 2011-09-24 | 2019-12-12 | Tdk Electronics Ag | Multi-layer gas discharge tube |
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2014
- 2014-04-30 EA EA201400514A patent/EA025205B1/en not_active IP Right Cessation
-
2015
- 2015-03-19 BR BR112015026421-2A patent/BR112015026421B1/en active IP Right Grant
- 2015-03-19 JP JP2016540845A patent/JP6253783B2/en active Active
- 2015-03-19 WO PCT/RU2015/000157 patent/WO2015167360A1/en active Application Filing
- 2015-03-19 MX MX2015014505A patent/MX353664B/en active IP Right Grant
- 2015-03-19 CN CN201580000561.4A patent/CN105453354B/en active Active
- 2015-03-19 MY MYPI2015002568A patent/MY178395A/en unknown
- 2015-10-07 ZA ZA2015/07455A patent/ZA201507455B/en unknown
- 2015-10-15 SA SA515370009A patent/SA515370009B1/en unknown
- 2015-10-16 PH PH12015502403A patent/PH12015502403B1/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6108187A (en) * | 1995-11-17 | 2000-08-22 | Streamer Electric Company, Inc. | Electric power transmission line with protection devices against lightning overvoltages |
| CN101981633A (en) * | 2008-03-27 | 2011-02-23 | Npo流光开放式股份公司 | High-voltage insulator and a high-voltage electric power line using said insulator |
| CN102349206A (en) * | 2009-01-19 | 2012-02-08 | Npo流光开放式股份公司 | Lighting arrester and a power transmission line provided with such an arrester |
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| CN114204508A (en) * | 2021-11-19 | 2022-03-18 | 国网浙江义乌市供电有限公司 | Grounding ring device of cable terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| BR112015026421B1 (en) | 2022-07-12 |
| JP6253783B2 (en) | 2017-12-27 |
| SA515370009B1 (en) | 2019-01-14 |
| PH12015502403A1 (en) | 2016-02-22 |
| MX2015014505A (en) | 2016-05-26 |
| MX353664B (en) | 2018-01-19 |
| EA201400514A1 (en) | 2015-12-30 |
| WO2015167360A1 (en) | 2015-11-05 |
| MY178395A (en) | 2020-10-12 |
| PH12015502403B1 (en) | 2016-02-22 |
| ZA201507455B (en) | 2017-02-22 |
| CN105453354B (en) | 2018-02-16 |
| EA025205B1 (en) | 2016-11-30 |
| BR112015026421A2 (en) | 2021-08-17 |
| JP2016536759A (en) | 2016-11-24 |
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