CN113341339A - Voltage-dividing insulating cap for controllable lightning arrester direct current leakage current test - Google Patents
Voltage-dividing insulating cap for controllable lightning arrester direct current leakage current test Download PDFInfo
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- CN113341339A CN113341339A CN202110543933.5A CN202110543933A CN113341339A CN 113341339 A CN113341339 A CN 113341339A CN 202110543933 A CN202110543933 A CN 202110543933A CN 113341339 A CN113341339 A CN 113341339A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0425—Test clips, e.g. for IC's
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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
- H01B17/56—Insulating bodies
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Abstract
The invention discloses a voltage-dividing insulating cap for a controllable lightning arrester direct-current leakage current test, which comprises a voltage-dividing insulating cap body and an inflation cavity positioned in the voltage-dividing insulating cap body; the bottom of partial pressure insulator cap body is equipped with the recess, and its top is the pointed end of turriform. The voltage-dividing insulation cap body comprises an insulation cap top and an insulation cap side part fixedly connected below the insulation cap top, and the insulation cap top and the insulation cap side part are integrally formed and manufactured by adopting a silicon rubber material; the outer sides of the top part and the side part of the insulating cap are both folding corrugated surfaces. The voltage-dividing insulating cap bears voltage, and the value of the voltage borne by the voltage-dividing insulating cap is reduced compared with that of the voltage borne by the existing controllable lightning arrester during test; SF6The gas insulation safety is high, and the gas insulation structure is more resistant to high voltage; the voltage-dividing insulating cap can play a role in increasing the insulating strength and adjusting the insulating cooperationTherefore, the leakage current test of the controllable lightning arrester is completed without dismounting the controllable switch.
Description
Technical Field
The invention relates to a voltage division insulating cap for a controllable lightning arrester direct current leakage current test, and belongs to the technical field of lightning arrester tests.
Background
The arrester is connected between the cable and ground, usually in parallel with the equipment to be protected. The lightning arrester can effectively protect communication equipment, and once abnormal voltage appears, the lightning arrester acts to play a role in protection. When the communication cable or equipment is operated under normal operating voltage, the lightning arrester does not act and is considered as an open circuit to the ground. Once high voltage occurs and the insulation of the protected equipment is endangered, the lightning arrester acts immediately to guide high voltage impact current to the ground, thereby limiting the voltage amplitude and protecting the insulation of the communication cable and the equipment. When the overvoltage disappears, the lightning arrester is quickly restored to the original state, so that the communication line works normally.
Therefore, the lightning arrester mainly plays a role in reducing the amplitude of the invading flow wave and reducing the overvoltage value borne by the protected equipment through the action of the parallel discharge gap or the nonlinear resistor, thereby protecting the communication line and the equipment.
The lightning arrester can be used not only to protect against high voltages generated by lightning but also to protect against high operating voltages.
The lightning arrester is used for protecting various electrical equipment in an electric power system from being damaged by lightning overvoltage, operation overvoltage and power frequency transient overvoltage impact.
The types of arresters are mainly protection gap, valve type arresters and zinc oxide arresters. The protective gap is mainly used for limiting atmospheric overvoltage and is generally used for protecting the line incoming section of a power distribution system, a line and a substation. The valve type lightning arrester and the zinc oxide lightning arrester are used for protecting a substation and a power plant, are mainly used for limiting atmospheric overvoltage in a system of 500KV and below, and are also used for limiting internal overvoltage or performing backup protection on the internal overvoltage in an ultrahigh voltage system.
Therefore, the lightning protection effect of the lightning arrester is extremely important for power lines and power equipment, and it is necessary to test the lightning protection effect of the lightning arrester, mainly through a lightning arrester leakage current test.
However, in the process of direct current leakage of the controllable lightning arrester, direct current high voltage needs to be applied to the lower flange of the lightning arrester. This high voltage is applied simultaneously across the control switch, and the break in the switch cannot withstand the high voltage. Therefore, in the test process, the connecting wire between the lightning arrester and the control switch needs to be removed, but the insulating distance between the lightning arrester and the control switch after the connecting wire is removed is small, and the connecting wire still cannot bear high voltage.
Therefore, how to complete the leakage current test of the controllable lightning arrester under the condition of not dismantling the controllable switch is a technical problem which needs to be solved urgently.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a voltage-dividing insulating cap for a direct-current leakage current test of a controllable lightning arrester, which can play a role in increasing the insulating strength and adjusting the insulating coordination, and realizes the completion of the leakage current test of the controllable lightning arrester without dismantling a controllable switch.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a voltage division insulating cap for a controllable lightning arrester direct current leakage current test comprises a voltage division insulating cap body and an inflation cavity arranged in the voltage division insulating cap body;
the bottom of partial pressure insulator cap body is equipped with the recess, and its top is the pointed end of turriform.
As a further improvement of the present invention,
the voltage-dividing insulation cap body comprises an insulation cap top and an insulation cap side part fixedly connected below the insulation cap top, and the insulation cap top and the insulation cap side part are integrally formed and manufactured by adopting a silicon rubber material; the outer sides of the top part and the side part of the insulating cap are both folding corrugated surfaces.
As a further improvement of the present invention,
the center of the top surface of the top of the insulating cap is provided with a filling port for filling SF6A gas charging port; the inflation inlet is sealed and plugged by a sealing plug.
As a further improvement of the present invention,
the lower part of the outer side of the top of the insulating cap is fixedly connected with a side baffle, and the upper part of the insulating cap is fixedly connected with a first fixing plate;
threaded hole is seted up at first fixed plate middle part, threaded hole female connection has first flexible regulation post, the lower extreme of first flexible regulation post supports in side shield upper surface middle part.
As a further improvement of the present invention,
the lower part of the outer side of the side part of the insulating cap is fixedly connected with a lower baffle, and the upper part of the lower baffle is fixedly connected with a second fixing plate;
the middle part of the second fixing plate is provided with a screw hole, a second telescopic adjusting column is connected with the screw hole in an internal thread mode, and the lower end of the second telescopic adjusting column is abutted to the middle part of the upper surface of the lower baffle plate.
As a further improvement of the present invention,
and a metal support matched with the groove at the bottom of the partial pressure insulation cap body is attached to the lower part of the partial pressure insulation cap body.
As a further improvement of the present invention,
the metal support is connected with a first conductive clamp through a conductive wire.
As a further improvement of the present invention,
the upper end of the top of the insulating cap is connected with a second conductive clamp positioned outside the voltage-dividing insulating cap body through a conductive wire.
As a further improvement of the present invention,
the first conductive clip clamps an upper section and a lower section of the arrester body.
As a further improvement of the present invention,
and the second conductive clamp clamps the upper flange of the lower section of the arrester body.
In particular, the method comprises the following steps of,
when the controllable arrester is tested, the control switch of the control switch body and the arrester body is disconnected, the bottom groove of the insulating cap body is worn at the top end of the control switch body, the second conductive clamp clamps the upper flange of the lower section of the arrester, the first conductive clamp clamps the upper flange of the upper section of the arrester, and a current transformer is installed on a support below the arrester body and used for detecting the current value leaked by the arrester.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
1. the voltage-dividing insulating cap bears voltage, and the borne voltage value is reduced compared with that of the existing controllable lightning arrester during test.
2、SF6The gas insulation safety is high, and the high pressure is endured more.
3. Adopt silicon rubber material integrated into one piece preparation to can adjust the flexible of folding corrugated surface through flexible regulation post, can change the overall dimension of partial pressure insulator cap body according to test voltage.
4. The voltage-dividing insulating cap can play a role in increasing the insulating strength and adjusting the insulating coordination, and the leakage current test of the controllable lightning arrester can be completed without dismantling the controllable switch.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view showing the assembly of the voltage-dividing insulating cap of the present invention in the test of the lightning arrester;
fig. 3 is a schematic structural view of the metal support of the present invention.
Wherein:
11 insulating cap top;
12 side baffle plates;
13 a first fixing plate;
14 a first telescoping adjustment post;
21 insulating cap side parts;
22 a lower baffle;
23 a second fixing plate;
24 a second telescoping adjustment post;
2 inflating the chamber;
3, an inflation inlet;
6, supporting by metal;
7 a first conductive clip;
8 a conductive line;
9 a second conductive clip;
10 voltage division insulation cap body;
20, an upper section and a lower flange of the lightning arrester;
30 control switch body;
40, an upper flange of a lower section of the lightning arrester;
50, a bracket;
70 lightning arrester body.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise.
Furthermore, it will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting.
Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Example one
As shown in figure 1 of the drawings, in which,
a voltage division insulating cap for a controllable lightning arrester direct current leakage current test comprises a voltage division insulating cap body 10 and an inflation cavity 2 positioned in the voltage division insulating cap body 10;
the bottom of the partial pressure insulation cap body 10 is provided with a groove, and the top of the partial pressure insulation cap body is a tower-shaped tip.
Further, the voltage-dividing insulation cap body 10 comprises an insulation cap top 11 and an insulation cap side 21 fixedly connected below the insulation cap top 11, and the insulation cap top 11 and the insulation cap side 21 are integrally formed and manufactured by adopting a silicon rubber material;
further, the outside of the top 11 and the side 21 of the cap is a folding corrugated surface.
Furthermore, the center of the top surface of the top 11 of the insulating cap is provided with a hole for filling SF6A gas charging port 3; the inflation inlet 3 is sealed and plugged by a sealing plug.
In this embodiment, the insulation voltage dividing insulation cap body 10 is sleeved on the upper end of the control switch body 30, and the inflation chamber 2 of the insulation voltage dividing insulation cap body 10 is filled with SF6The gas air is insulated, and when the controllable arrester is tested, the gas air bears partial voltage of the control switch body 30, has a voltage division effect, and effectively reduces the voltage borne by the control switch body 30 and the fracture of the arrester.
Example two
As shown in figure 1 of the drawings, in which,
a voltage division insulating cap for a controllable lightning arrester direct current leakage current test comprises a voltage division insulating cap body 10 and an inflation cavity 2 positioned in the voltage division insulating cap body 10;
the bottom of the partial pressure insulation cap body 10 is provided with a groove, and the top of the partial pressure insulation cap body is a tower-shaped tip.
Further, the voltage-dividing insulation cap body 10 comprises an insulation cap top 11 and an insulation cap side 21 fixedly connected below the insulation cap top 11, and the insulation cap top 11 and the insulation cap side 21 are integrally formed and manufactured by adopting a silicon rubber material;
further, the outside of the top 11 and the side 21 of the cap is a folding corrugated surface.
Furthermore, the center of the top surface of the top 11 of the insulating cap is provided with a hole for filling SF6A gas charging port 3; the inflation inlet 3 is sealed and plugged by a sealing plug.
As a further optimization, a pressure detection meter for detecting the air pressure value in the inflating chamber 2 is arranged on the inflating port 3, so that the air pressure in the inflating chamber 2 can be monitored in real time conveniently.
Further, the lower part of the outer side of the top 11 of the insulating cap is fixedly connected with a side baffle 12, and the upper part of the side baffle is fixedly connected with a first fixing plate 13;
a threaded hole is formed in the middle of the first fixing plate 13, a first telescopic adjusting column 14 is connected to the threaded hole in an internal thread mode, and the lower end of the first telescopic adjusting column 14 abuts against the middle of the upper surface of the side baffle 12.
Further, the lower part of the outer side of the side part 21 of the insulation cap is fixedly connected with a lower baffle 22, and the upper part of the side part is fixedly connected with a second fixing plate 23;
a screw hole is formed in the middle of the second fixing plate 23, a second telescopic adjusting column 24 is connected to the screw hole in an internal thread mode, and the lower end of the second telescopic adjusting column 24 abuts against the middle of the upper surface of the lower baffle plate 22.
In the present embodiment, in addition to the first embodiment, the first telescopic adjusting column 14 and the second telescopic adjusting column 24 are adjusted to be telescopic, so that the folded corrugated surfaces of the top portion 11 and the side portion 21 of the insulating cap are deformed, and the external dimension of the voltage-dividing insulating cap body can be changed according to the test voltage.
EXAMPLE III
As shown in figures 1 and 3 of the drawings,
a voltage division insulating cap for a controllable lightning arrester direct current leakage current test comprises a voltage division insulating cap body 10 and an inflation cavity 2 positioned in the voltage division insulating cap body 10;
the bottom of the partial pressure insulation cap body 10 is provided with a groove, and the top of the partial pressure insulation cap body is a tower-shaped tip.
Further, the voltage-dividing insulation cap body 10 comprises an insulation cap top 11 and an insulation cap side 21 fixedly connected below the insulation cap top 11, and the insulation cap top 11 and the insulation cap side 21 are integrally formed and manufactured by adopting a silicon rubber material;
further, the outside of the top 11 and the side 21 of the cap is a folding corrugated surface.
Furthermore, the center of the top surface of the top 11 of the insulating cap is provided with a hole for filling SF6A gas charging port 3; the inflation inlet 3 is sealed and plugged by a sealing plug.
Further, the lower part of the outer side of the top 11 of the insulating cap is fixedly connected with a side baffle 12, and the upper part of the side baffle is fixedly connected with a first fixing plate 13;
a threaded hole is formed in the middle of the first fixing plate 13, a first telescopic adjusting column 14 is connected to the threaded hole in an internal thread mode, and the lower end of the first telescopic adjusting column 14 abuts against the middle of the upper surface of the side baffle 12.
Further, the lower part of the outer side of the side part 21 of the insulation cap is fixedly connected with a lower baffle 22, and the upper part of the side part is fixedly connected with a second fixing plate 23;
a screw hole is formed in the middle of the second fixing plate 23, a second telescopic adjusting column 24 is connected to the screw hole in an internal thread mode, and the lower end of the second telescopic adjusting column 24 abuts against the middle of the upper surface of the lower baffle plate 22.
Furthermore, a metal support 6 matched with the groove at the bottom of the partial pressure insulation cap body 10 is attached below the partial pressure insulation cap body.
In this embodiment, on the basis of the second embodiment, the metal support 6 can provide a supporting force for the voltage-dividing insulation cap body 10, so as to maintain the stability of the voltage-dividing insulation cap body 10 at the upper end of the control switch.
Example four
As shown in the figures 1-3 of the drawings,
a voltage division insulating cap for a controllable lightning arrester direct current leakage current test comprises a voltage division insulating cap body 10 and an inflation cavity 2 positioned in the voltage division insulating cap body 10;
the bottom of the partial pressure insulation cap body 10 is provided with a groove, and the top of the partial pressure insulation cap body is a tower-shaped tip.
Further, the voltage-dividing insulation cap body 10 comprises an insulation cap top 11 and an insulation cap side 21 fixedly connected below the insulation cap top 11, and the insulation cap top 11 and the insulation cap side 21 are integrally formed and manufactured by adopting a silicon rubber material;
further, the outside of the top 11 and the side 21 of the cap is a folding corrugated surface.
Furthermore, the center of the top surface of the top 11 of the insulating cap is provided with a hole for filling SF6A gas charging port 3; the inflation inlet 3 is sealed and plugged by a sealing plug.
Further, the lower part of the outer side of the top 11 of the insulating cap is fixedly connected with a side baffle 12, and the upper part of the side baffle is fixedly connected with a first fixing plate 13;
a threaded hole is formed in the middle of the first fixing plate 13, a first telescopic adjusting column 14 is connected to the threaded hole in an internal thread mode, and the lower end of the first telescopic adjusting column 14 abuts against the middle of the upper surface of the side baffle 12.
Further, the lower part of the outer side of the side part 21 of the insulation cap is fixedly connected with a lower baffle 22, and the upper part of the side part is fixedly connected with a second fixing plate 23;
a screw hole is formed in the middle of the second fixing plate 23, a second telescopic adjusting column 24 is connected to the screw hole in an internal thread mode, and the lower end of the second telescopic adjusting column 24 abuts against the middle of the upper surface of the lower baffle plate 22.
Furthermore, a metal support 6 matched with the groove at the bottom of the partial pressure insulation cap body 10 is attached below the partial pressure insulation cap body.
Further, the upper end of the top 11 of the insulating cap is connected with a second conductive clip 9 located outside the voltage-dividing insulating cap body 10 through a conductive wire 8.
Further, the second conductive clip 9 clamps the arrester lower section upper flange 40 of the arrester body 70.
On the basis of the fourth embodiment, the lightning arrester lower section upper flange 40 of the lightning arrester body 70 is clamped by the second conductive clamp 9, so that the lightning arrester lower section upper flange is convenient to disassemble and assemble and convenient to operate during an experiment.
EXAMPLE five
As shown in the figures 1-3 of the drawings,
a voltage division insulating cap for a controllable lightning arrester direct current leakage current test comprises a voltage division insulating cap body 10 and an inflation cavity 2 positioned in the voltage division insulating cap body 10;
the bottom of the partial pressure insulation cap body 10 is provided with a groove, and the top of the partial pressure insulation cap body is a tower-shaped tip.
Further, the voltage-dividing insulation cap body 10 comprises an insulation cap top 11 and an insulation cap side 21 fixedly connected below the insulation cap top 11, and the insulation cap top 11 and the insulation cap side 21 are integrally formed and manufactured by adopting a silicon rubber material;
further, the outside of the top 11 and the side 21 of the cap is a folding corrugated surface.
Furthermore, the center of the top surface of the top 11 of the insulating cap is provided with a hole for filling SF6A gas charging port 3; the inflation inlet 3 is sealed and plugged by a sealing plug.
Further, the lower part of the outer side of the top 11 of the insulating cap is fixedly connected with a side baffle 12, and the upper part of the side baffle is fixedly connected with a first fixing plate 13;
a threaded hole is formed in the middle of the first fixing plate 13, a first telescopic adjusting column 14 is connected to the threaded hole in an internal thread mode, and the lower end of the first telescopic adjusting column 14 abuts against the middle of the upper surface of the side baffle 12.
Further, the lower part of the outer side of the side part 21 of the insulation cap is fixedly connected with a lower baffle 22, and the upper part of the side part is fixedly connected with a second fixing plate 23;
a screw hole is formed in the middle of the second fixing plate 23, a second telescopic adjusting column 24 is connected to the screw hole in an internal thread mode, and the lower end of the second telescopic adjusting column 24 abuts against the middle of the upper surface of the lower baffle plate 22.
Furthermore, a metal support 6 matched with the groove at the bottom of the partial pressure insulation cap body 10 is attached below the partial pressure insulation cap body.
Further, the metal support 6 is connected with a first conductive clip 7 through a conductive wire.
Further, the upper end of the top 11 of the insulating cap is connected with a second conductive clip 9 located outside the voltage-dividing insulating cap body 10 through a conductive wire 8.
Further, the first conductive clip 7 clamps the arrester upper section lower flange 20 of the arrester body 70.
Further, the second conductive clip 9 clamps the arrester lower section upper flange 40 of the arrester body 70.
On the basis of the fourth embodiment, the upper lightning arrester section upper flange 40 of the lightning arrester body 70 is clamped through the second conductive clamp 9, and the lower lightning arrester section upper flange 20 is clamped through the first conductive clamp 7, so that the experiment is convenient to disassemble and assemble, and the operation is more convenient and faster.
As shown in figure 2 of the drawings, in which,
the insulating cap voltage-dividing insulating cap for the controllable lightning arrester test developed by the embodiment can play roles in increasing the insulating strength, improving the electric field distribution and adjusting the insulating coordination, and realizes the purpose of completing the leakage current test of the controllable lightning arrester without dismantling the controllable switch.
The specific using process is as follows:
taking 1000kV as an example, when a 1000kV controllable lightning arrester is tested, the control switch of the control switch body 30 and the lightning arrester body 70 is disconnected without detaching a connecting wire, the bottom groove of the insulating cap body 1 is worn on the top end of the control switch body 30, the first conductive clip 7 clamps the lower flange 20 of the upper segment of the lightning arrester, the second conductive clip 9 clamps the upper flange 40 of the lower segment of the lightning arrester, and the current transformer 60 is installed on the bracket 50 below the lightning arrester body 70, and the current transformer 60 is used for detecting the current value of the leakage of the lightning arrester.
In the test process of the 1000kV controllable lightning arrester,
the numbers of the zinc oxide valve plates of the first section, the second section, the third section and the fourth section are respectively 60, 32 and 32, and the top end of the lightning arrester is grounded in the test process.
Thus, the equation is derived for the voltage of the control switch to ground (i.e., the voltage across the control switch)
The voltage value is lower than 70kV, so that the insulation safety of the flange at the top end of the control switch in the test is ensured; the voltage born by the voltage-dividing insulating cap is 170-55.4) kV which is 114.6kV, and 54kV is reduced compared with the original 170kV high voltage born by two ends of the control switch; further optimization, the first conductive clamp 7 is connected to the lower flange 20 of the upper section of the lightning arrester body 70, and the upper section of the lightning arrester is grounded, so that the voltage division effect is realized, and the voltage division insulating cap is further reducedIs subjected to a voltage.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; it is obvious as a person skilled in the art to combine several aspects of the invention. And such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a controllable arrester direct current leakage current is experimental with partial pressure insulator cap which characterized in that: comprises a partial pressure insulation cap body (10) and an inflation cavity (2) positioned in the partial pressure insulation cap body (10);
the bottom of the partial pressure insulation cap body (10) is provided with a groove, and the top of the partial pressure insulation cap body is a tower-shaped tip.
2. The voltage dividing insulating cap for the direct current leakage current test of the controllable lightning arrester according to claim 1, characterized in that: the voltage-dividing insulation cap body (10) comprises an insulation cap top part (11) and an insulation cap side part (21) fixedly connected below the insulation cap top part (11), and the insulation cap top part (11) and the insulation cap side part (21) are integrally formed and manufactured by adopting a silicon rubber material;
the outer sides of the top part (11) and the side part (21) of the insulating cap are both folding corrugated surfaces.
3. The voltage dividing insulating cap for the direct current leakage current test of the controllable lightning arrester according to claim 2, characterized in that: the center of the top surface of the top part (11) of the insulating cap is provided with a gas phase (SF) filling port6A gas charging port (3); the inflation inlet (3) is sealed and plugged by a sealing plug.
4. The voltage dividing insulating cap for the direct current leakage current test of the controllable lightning arrester according to claim 3, characterized in that: the lower part of the outer side of the top (11) of the insulating cap is fixedly connected with a side baffle (12), and the upper part of the side baffle is fixedly connected with a first fixing plate (13);
threaded hole is seted up in first fixed plate (13) middle part, threaded hole female connection has first flexible regulation post (14), the lower extreme of first flexible regulation post (14) supports in side shield (12) upper surface middle part.
5. The voltage dividing insulating cap for the direct current leakage current test of the controllable lightning arrester according to claim 4, characterized in that: the lower part of the outer side of the side part (21) of the insulating cap is fixedly connected with a lower baffle plate (22), and the upper part of the lower baffle plate is fixedly connected with a second fixing plate (23);
the middle part of the second fixing plate (23) is provided with a screw hole, the screw hole is connected with a second telescopic adjusting column (24) in a threaded manner, and the lower end of the second telescopic adjusting column (24) abuts against the middle part of the upper surface of the lower baffle plate (22).
6. The voltage dividing insulating cap for the direct current leakage current test of the controllable lightning arrester according to claim 3, characterized in that: and a metal support (6) matched with the groove at the bottom of the partial pressure insulation cap body (10) is attached to the lower part of the partial pressure insulation cap body.
7. The voltage dividing insulating cap for the direct current leakage current test of the controllable lightning arrester according to claim 6, characterized in that: the metal support (6) is connected with a first conductive clamp (7) through a conductive wire.
8. The voltage dividing insulating cap for the direct current leakage current test of the controllable lightning arrester according to claim 7, characterized in that: the upper end of the top part (11) of the insulating cap is connected with a second conductive clamp (9) positioned outside the voltage-dividing insulating cap body (10) through a conductive wire (8).
9. The voltage dividing insulating cap for the direct current leakage current test of the controllable lightning arrester according to claim 8, characterized in that: the first conductive clip (7) clips the upper section and the lower section of the lightning arrester (20) of the lightning arrester body (70).
10. The voltage dividing insulating cap for the direct current leakage current test of the controllable lightning arrester according to claim 9, characterized in that: the second conductive clip (9) clips an upper flange (40) of the lower section of the lightning arrester body (70).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110543933.5A CN113341339B (en) | 2021-05-19 | 2021-05-19 | Voltage-dividing insulating cap for controllable lightning arrester direct current leakage current test |
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