CN116565798A - Terminal lightning arrester of substation - Google Patents

Terminal lightning arrester of substation Download PDF

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Publication number
CN116565798A
CN116565798A CN202310455253.7A CN202310455253A CN116565798A CN 116565798 A CN116565798 A CN 116565798A CN 202310455253 A CN202310455253 A CN 202310455253A CN 116565798 A CN116565798 A CN 116565798A
Authority
CN
China
Prior art keywords
insulating
fixing mechanism
terminal
insulating block
substation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310455253.7A
Other languages
Chinese (zh)
Inventor
王文琦
金雪松
王晓杰
侯艳权
杜欣阳
姚传志
曹鑫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qitaihe Power Supply Co Of State Grid Heilongjiang Electric Power Co ltd
State Grid Corp of China SGCC
Original Assignee
Qitaihe Power Supply Co Of State Grid Heilongjiang Electric Power Co ltd
State Grid Corp of China SGCC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qitaihe Power Supply Co Of State Grid Heilongjiang Electric Power Co ltd, State Grid Corp of China SGCC filed Critical Qitaihe Power Supply Co Of State Grid Heilongjiang Electric Power Co ltd
Priority to CN202310455253.7A priority Critical patent/CN116565798A/en
Publication of CN116565798A publication Critical patent/CN116565798A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • H02G13/80—Discharge by conduction or dissipation, e.g. rods, arresters, spark gaps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors
    • H01C7/126—Means for protecting against excessive pressure or for disconnecting in case of failure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
    • H01H85/0411—Miniature fuses
    • H01H85/0415—Miniature fuses cartridge type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/05—Component parts thereof
    • H01H85/055—Fusible members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • 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

Abstract

The invention discloses a terminal lightning arrester of a substation, belongs to the technical field of lightning protection of the substation, and aims to solve the problem that a lightning arrester terminal of the substation only can protect single power supply line electrical equipment. It comprises the following steps: the connector of the lightning arrester main body is inserted with a fixing mechanism, and a connecting mechanism is arranged in the fixing mechanism; the fixing mechanism is a shell with a cavity inside; the connecting mechanism comprises an insulating block, an electrode plate, an insulating sleeve and a connecting copper nose; the insulating block is arranged in a cavity in the fixing mechanism, the top of the insulating block is provided with an electrode plate, the side of the insulating block is fixedly connected with an insulating sleeve, the insulating sleeve is arranged on the outer side of the cavity in the fixing mechanism, the top end of the insulating sleeve is fixedly connected with a connecting copper nose, and the connecting copper nose is used for wrapping and clamping copper wires of a power supply circuit of the power transformation station; the bottom of the insulating block is longitudinally provided with a groove, two longitudinal end faces of the groove are respectively provided with guide sheets, and a safety tube is arranged between the two guide sheets. The lightning protection device is used for lightning protection of the substation.

Description

Terminal lightning arrester of substation
Technical Field
The invention relates to a terminal lightning arrester of a substation, and belongs to the technical field of lightning protection of the substation.
Background
The power substation is a place for converting, centralizing and distributing the voltage and the current of the electric energy in the electric power system, and voltage adjustment, tide (the flow and distribution of the voltage, the current and the power in each node and branch in the electric power system) control and the protection of power transmission and distribution lines and main electrical equipment are also needed in the power substation to ensure the quality of the electric energy and the safety of the equipment. The daily maintenance of the substation comprises a high-voltage insulating sleeve, the maintenance of the surface of a post insulator, the maintenance of an isolating switch operating mechanism, the prevention of false drop of a drop-out high-voltage fuse, and normal oil level and oil supplement in the operation of the transformer, and lightning protection measures.
Electrical equipment in torpedo weather protection lines generally employ lightning arresters, which are mainly used to suppress surges in current. The lightning arrester in the prior art avoids damage to electrical equipment connected to a power supply end by lightning surge in thunderstorm weather through plugging in the power supply end, but has the following defects:
the power supply circuit of each first and second electric equipment is generally a plurality of independent circuits, and the lightning arrester is plugged into the power supply end, so that only the electric equipment on a single power supply circuit can be protected;
second, one arrester needs to be installed on each line, so that a large number of arresters need to be used when multiple lines need to be protected at the same time.
Therefore, there is a need for a terminal arrester for a substation to solve the above problems.
Disclosure of Invention
The invention aims to solve the problem that a lightning protection terminal of a substation can only protect electric equipment of a single power supply line, and provides a terminal lightning arrester of the substation.
The invention relates to a terminal lightning arrester of a substation, which comprises a lightning arrester main body, a fixing mechanism and a connecting mechanism, wherein the fixing mechanism is inserted into a joint of the lightning arrester main body, and the connecting mechanism is arranged in the fixing mechanism;
the fixing mechanism is a shell with a cavity inside;
the connecting mechanism comprises an insulating block, an electrode plate, an insulating sleeve and a connecting copper nose; the insulating block is arranged in a cavity in the fixing mechanism, the top of the insulating block is provided with an electrode plate, the side of the insulating block is fixedly connected with an insulating sleeve, the insulating sleeve is arranged on the outer side of the cavity in the fixing mechanism, the top end of the insulating sleeve is fixedly connected with a connecting copper nose, and the connecting copper nose is used for wrapping and clamping copper wires of a power supply circuit of the power transformation station;
the bottom of the insulating block is longitudinally provided with a groove, two longitudinal end faces of the groove are respectively provided with guide sheets, and a safety tube is arranged between the two guide sheets.
Preferably, one guide piece is connected to the electrode piece, the other guide piece is connected to a power line of the axis of the insulating sleeve, and the top end of the power line is connected to a connecting copper nose.
Preferably, the fixing mechanism comprises a protection bottom shell and a protection top shell, and the protection bottom shell and the protection top shell are buckled into a shell with a cavity inside.
Preferably, the protection bottom shell and the protection top shell are connected through bolts and nuts.
Preferably, the fixing mechanism further comprises a limiting groove, the limiting groove is arranged at the bottom of the protection bottom shell, and the positions of the limiting groove correspond to the positions of the insulating sleeves one by one.
Preferably, the fixing mechanism further comprises a plug hole, the plug hole is arranged at the top of the protective top shell, and the lightning arrester main body is plugged in the plug hole.
Preferably, the fixing mechanism further comprises a connecting support column, and the insulating block is fixedly installed through the connecting support column.
Preferably, the number of the connecting support columns connected with each insulating block is four, and the four connecting support columns are distributed in a rectangular shape.
Preferably, a hard power line is arranged at the inner axis of the insulating sleeve, and the surface of the insulating sleeve is an insulating layer.
The terminal lightning arrester of the substation provided by the invention has the following advantages:
1. the lightning arrester can generally protect electrical equipment connected to a power supply and reduce the number of lightning arresters. Through pegging graft arrester main part in fixed establishment's inside to through the joint department spare centre gripping of connecting copper nose and power supply main power supply, make the copper line surface at the power supply line of connecting copper nose parcel, in order to avoid directly using wire connection and take place virtual joint or strike sparks easily, then will cross the power supply main power supply line and insert on the inside master switch of block terminal, when taking place the surge, protect electrical equipment from the source of power, can protect electrical equipment on a plurality of lines, reduce arrester's use quantity.
2. The groove is formed in the bottom of the insulating block, the safety tube is arranged in the groove, the electrode plate is connected with the copper nose through the safety tube, so that when the lightning surge exceeds the protection range of the lightning arrester main body, the safety tube can be fused, the lightning arrester main body and the electrical equipment are protected, and the effect of improving safety is achieved.
Drawings
Fig. 1 is a schematic diagram of a terminal arrester of a substation according to the present invention;
FIG. 2 is a schematic view of the structure of the fixing mechanism and the connecting mechanism according to the present invention;
FIG. 3 is a schematic view of the internal structure of the fixing mechanism according to the present invention;
FIG. 4 is a schematic view of the structure of the protective bottom shell according to the present invention;
fig. 5 is a schematic structural view of the connecting mechanism according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
The invention is further described below with reference to the drawings and specific examples, which are not intended to be limiting.
Example 1:
the terminal lightning arrester of the substation according to the present embodiment includes a lightning arrester main body 1, a fixing mechanism 2 and a connecting mechanism 3, wherein the fixing mechanism 2 is inserted into a joint of the lightning arrester main body 1, and the connecting mechanism 3 is installed inside the fixing mechanism 2;
the fixing mechanism 2 is a shell with a cavity inside;
the connecting mechanism 3 comprises an insulating block 301, an electrode plate 302, an insulating sleeve 304 and a connecting copper nose 305; the insulating block 301 is arranged in a cavity in the fixing mechanism 2, the top of the insulating block 301 is provided with an electrode plate 302, the side of the insulating block 301 is fixedly connected with an insulating sleeve 304, the insulating sleeve 304 is arranged on the outer side of the cavity in the fixing mechanism 2, the top end of the insulating sleeve 304 is fixedly connected with a connecting copper nose 305, and the connecting copper nose 305 is used for wrapping copper wires clamped on a power supply circuit of a transformer;
the bottom of the insulating block 301 is longitudinally provided with a groove, two longitudinal end surfaces of the groove are respectively provided with a guide sheet, and a safety tube 303 is arranged between the two guide sheets.
In this embodiment, through pegging graft arrester main part 1 in the inside of fixed establishment 2 to through the junction spare centre gripping of connection copper nose 305 and electric substation power supply, make the copper line surface at the power supply line of connection copper nose 305 parcel, in order to avoid directly using the electric wire to connect and take place virtual joint or strike sparks easily, then access the main power supply line of supplying power to the inside master switch of electric substation block terminal, when taking place the surge, protect the electrical equipment on the power supply from the source of power, reached overall protection electrical equipment, and reduce the effect of arrester use quantity.
In addition, through seting up the recess in the bottom of insulating piece 301 to set up protective tube 303 in the inside of recess, and connect electrode slice 302 and connect copper nose 305 through protective tube 303, thereby when thunderstorm weather surge surpasses arrester main part protection scope, protective tube 303 can fuse, thereby protect arrester main part and domestic appliance, reached the effect that promotes the security.
In this embodiment, an insulating block 301 is provided to protect the line, raise the safety, reduce the possibility of leakage, and conduct line communication through wires inside the insulating block 301, while a groove is provided at the bottom of the insulating block 301 to mount a fuse 303, and protect the lightning arrester main body 1 through the fuse 303.
In the present embodiment, the fuse 303 is provided between the guide pieces in the insulating block 301, the fuse 303 is sandwiched by the two guide pieces, and the fuse 303 is energized.
Further, one lead is connected to the electrode plate 302, the other lead is connected to a power line at the center of the insulating sleeve 304, and the top end of the power line is connected to the connecting copper nose 305.
In this embodiment, two conducting strips are provided inside the insulating block 301 to connect the electrode plate 302 and the connection copper nose 305 respectively, so that the electrode plate 302 and the connection copper nose 305 can conduct electricity only through the intact fuse 303, and when the fuse 303 is damaged, the electrode plate 302 is disconnected to energize the protection lightning arrester main body 1, and when a surge capable of fusing the fuse 303 passes, the air switch or the load switch trips.
Further, the fixing mechanism 2 includes a protective bottom shell 201 and a protective top shell 204, and the protective bottom shell 201 and the protective top shell 204 are buckled into a shell with a cavity inside.
Further, the protection bottom case 201 and the protection top case 204 are connected by bolts and nuts.
Further, the fixing mechanism 2 further includes a limiting groove 202, the limiting groove 202 is disposed at the bottom of the protective bottom shell 201, and the positions of the limiting groove 202 and the insulating sleeve 304 are in one-to-one correspondence.
In the present embodiment, the number of the limiting grooves 202 is two. During installation, the power supply line can be clamped in the limiting groove 202, so that the fixing mechanism 2 can be kept horizontal relative to the power supply line, and the stability of the fixing mechanism 2 is improved.
Further, the fixing mechanism 2 further includes a plugging hole 205, the plugging hole 205 is disposed at the top of the protective top shell 204, and the lightning arrester main body 1 is plugged into the plugging hole 205.
Further, the fixing mechanism 2 further includes a connection support 203, and the insulating block 301 is fixedly installed by the connection support 203.
In this embodiment, the connection support 203 is disposed inside the protective bottom case 201 to support and fix the insulating block 301, and the insulating block 301 is suspended inside the fixing mechanism 2, so that damage to the insulating block 301 is prevented from being reduced when the fixing mechanism 2 is impacted, and a protective effect is achieved.
Further, the number of the connection supporting columns 203 connected to each insulating block 301 is four, and the four connection supporting columns 203 are rectangular in distribution.
Further, a hard power cord is disposed in the inner axis of the insulating sleeve 304, and the surface of the insulating sleeve 304 is an insulating layer.
In this embodiment, the outer surface of the insulating sleeve 304 is provided with an insulating layer, so that the safety can be improved during the installation or use process, and the copper nose 305 and the connector of the power supply line are connected together and enter the inside of the connecting terminal without direct exposure.
In the invention, the model of the adopted lightning arrester main body 1 is HM1-100, and the lightning arrester main body is a primary surge protector, and has the advantages of wide application range and instant lightning protection.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the different dependent claims and the features described herein may be combined in ways other than as described in the original claims. It is also to be understood that features described in connection with separate embodiments may be used in other described embodiments.

Claims (9)

1. The terminal lightning arrester of the substation is characterized by comprising a lightning arrester main body (1), a fixing mechanism (2) and a connecting mechanism (3), wherein the fixing mechanism (2) is inserted into a joint of the lightning arrester main body (1), and the connecting mechanism (3) is arranged in the fixing mechanism (2);
the fixing mechanism (2) is a shell with a cavity inside;
the connecting mechanism (3) comprises an insulating block (301), an electrode plate (302), an insulating sleeve (304) and a connecting copper nose (305); the insulating block (301) is arranged in a cavity in the fixing mechanism (2), an electrode plate (302) is arranged at the top of the insulating block (301), an insulating sleeve (304) is fixedly connected to the side of the insulating block (301), the insulating sleeve (304) is arranged on the outer side of the cavity in the fixing mechanism (2), a connecting copper nose (305) is fixedly connected to the top end of the insulating sleeve (304), and the connecting copper nose (305) is used for wrapping copper wires clamped on a power supply circuit of the transformer;
the bottom of the insulating block (301) is longitudinally provided with a groove, two longitudinal end faces of the groove are respectively provided with guide sheets, and a safety tube (303) is arranged between the two guide sheets.
2. A terminal arrester of a substation according to claim 1, characterized in that one lead is connected to the electrode plate (302) and the other lead is connected to the power line of the core of the insulating sheath (304), the top end of the power line being connected to the connecting copper nose (305).
3. A terminal arrester of a substation according to claim 1, characterized in that the fixing means (2) comprise a protective bottom shell (201) and a protective top shell (204), the protective bottom shell (201) and the protective top shell (204) being fastened as a housing with a cavity inside.
4. A terminal arrester of a substation according to claim 3, characterized in that the protective bottom shell (201) and the protective top shell (204) are connected by means of bolts and nuts.
5. The terminal lightning arrester of the substation according to claim 4, wherein the fixing mechanism (2) further comprises a limiting groove (202), the limiting groove (202) is arranged at the bottom of the protection bottom shell (201), and the positions of the limiting groove (202) are in one-to-one correspondence with the positions of the insulating sleeves (304).
6. A terminal arrester of a substation according to claim 5, characterized in that the fixing means (2) further comprises a plug hole (205), the plug hole (205) being arranged at the top of the protective top shell (204), the arrester body (1) being plugged onto the plug hole (205).
7. A terminal arrester of a substation according to claim 6, characterized in that the fixing means (2) further comprises a connection support post (203), through which connection support post (203) the insulating block (301) is fixedly mounted.
8. A terminal lightning arrester of a substation according to claim 7, characterized in that the number of connection support posts (203) connected to each insulating block (301) is four, the four connection support posts (203) being rectangular in distribution.
9. The terminal lightning arrester of the substation according to claim 8, wherein the inner axis of the insulating sleeve (304) is provided with a hard power line, and the surface of the insulating sleeve (304) is an insulating layer.
CN202310455253.7A 2023-04-25 2023-04-25 Terminal lightning arrester of substation Pending CN116565798A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310455253.7A CN116565798A (en) 2023-04-25 2023-04-25 Terminal lightning arrester of substation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310455253.7A CN116565798A (en) 2023-04-25 2023-04-25 Terminal lightning arrester of substation

Publications (1)

Publication Number Publication Date
CN116565798A true CN116565798A (en) 2023-08-08

Family

ID=87495684

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310455253.7A Pending CN116565798A (en) 2023-04-25 2023-04-25 Terminal lightning arrester of substation

Country Status (1)

Country Link
CN (1) CN116565798A (en)

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