CN113451937B

CN113451937B - Line protection measurement and control device of intelligent substation

Info

Publication number: CN113451937B
Application number: CN202110593400.8A
Authority: CN
Inventors: 陈文英
Original assignee: China Huadian Engineering Group Co Ltd
Current assignee: China Huadian Engineering Group Co Ltd
Priority date: 2020-10-17
Filing date: 2020-10-17
Publication date: 2022-11-01
Anticipated expiration: 2040-10-17
Also published as: CN112165028A; CN112165028B; CN113451937A; CN113451936B; CN113451936A

Abstract

The invention discloses a line protection measurement and control device of an intelligent substation, which comprises an outer upper shell and an outer lower shell, wherein the outer upper shell and the outer lower shell are arranged on the outer side of a cable, the outer upper shell and the outer lower shell are connected in a sliding manner, the inner side of the outer upper shell is provided with an inner upper shell, a temperature sensing mechanism, an absorption mechanism and a circuit breaking reconnection mechanism are arranged in the inner upper shell, and a signal mechanism is arranged in the outer lower shell. The temperature sensing mechanism automatically adjusts and protects the cable according to the change of the outside air temperature, the absorption mechanism utilizes induced electricity generated by current in the cable as a driving source of the absorption mechanism, and the circuit breaking reconnection mechanism detects the circuit breaking position in the cable and reconnects the cable.

Description

Line protection measurement and control device of intelligent substation

Technical Field

The invention relates to the technical field of line protection measurement and control, in particular to a line protection measurement and control device of an intelligent substation.

Background

The transformer substation appears from the beginning of the establishment of the power system, the transformer substation, which is an indispensable part of the power system, develops for more than 100 years together with the power system, and in the development course of the more than 100 years, the transformer substation has great changes in the aspects of construction sites, voltage levels, equipment conditions and the like.

On the construction site of the transformer substation, indoor transformer substations and some underground transformer substations gradually appear from all original open-type outdoor transformer substations, and the occupied area of the transformer substation is greatly reduced compared with the original open-type outdoor transformer substations.

In the voltage class, with the development of power technology, a small number of 110kV and 220kV transformer substations are used as hub transformer substations. The 35kV is a small power grid transmission mode of a terminal substation, and a large power grid transmission mode with an extra-high voltage 1000kV substation and a 500kV substation as junction substations and 220kV and 110kV substations as terminal substations is developed gradually.

In the aspect of electrical equipment, the equipment is developed to a totally-enclosed gas combined electrical apparatus (GIS) and a semi-enclosed gas combined electrical apparatus (HGIS) gradually by taking original open-type outdoor equipment as a main part; secondary devices have evolved from early transistor and integrated circuit protection to microcomputer protection.

When the existing line protection measurement and control device of the transformer substation breaks down, maintenance personnel spend a large amount of time to detect the fault position, and the practicability is poor; meanwhile, the line protection measurement and control device of the existing transformer substation can only be powered off after a fault occurs to wait for maintenance personnel to come for maintenance, and needs to be powered off for a long time. Therefore, it is necessary to design a line protection measurement and control device for an intelligent substation, which helps maintenance personnel to quickly determine a fault point and can be automatically reconnected when a line has a fault.

Disclosure of Invention

The invention aims to provide a line protection measurement and control device of an intelligent substation, which aims to solve the problems in the background technology.

In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a line protection measurement and control device of intelligent substation, includes outer casing and outer casing down, outer casing and outer casing setting in the cable outside down of going up, outer casing and outer casing sliding connection down go up, the inboard of outer casing of going up is provided with interior casing of going up, the inside of interior casing of going up is provided with temperature sensing mechanism, absorption mechanism and opens circuit reconnection mechanism, the inside of outer casing is provided with signal mechanism down, temperature sensing mechanism adjusts by oneself according to outside temperature's change and protects the cable, and absorption mechanism utilizes the induced electricity that electric current produced in the cable as the drive source of self, opens circuit reconnection mechanism and detects circuit position and reconnection in the cable.

According to the technical scheme, the absorption mechanism comprises an electromagnetic conversion assembly and a driving assembly, wherein the electromagnetic conversion assembly is electrically connected with the driving assembly; the circuit breaking reconnection mechanism comprises an inductance assembly, a first circuit breaking reconnection assembly and a second circuit breaking reconnection assembly, wherein the inductance assembly is fixed with the first circuit breaking reconnection assembly, and is connected with the second circuit breaking reconnection assembly in a sliding mode; the temperature sensing mechanism is divided into an upper assembly and a lower assembly, the upper assembly is arranged inside the outer upper shell, and the lower assembly is arranged inside the outer lower shell.

According to the technical scheme, the electromagnetic conversion assembly comprises a casing, the casing is fixed inside an inner upper casing, a plurality of groups of iron bars are arranged inside the casing, a plurality of groups of thin insulating plates are arranged on the inner sides of the iron bars, a main shaft is arranged inside the casing and penetrates through the thin insulating plates, two cutting magnetic blocks are arranged at one end of the outer portion of the casing of the main shaft, a cutting rod is arranged between the two cutting magnetic blocks, first conducting wires are respectively arranged on one sides of the two cutting magnetic blocks, a current amplifier is arranged on each first conducting wire, an iron block is arranged on one side of each first conducting wire, a first switch is arranged below each iron block, a storage battery is arranged on one side of each iron block, one end of each first switch is arranged on the storage battery, the other end of each first switch is a main output end, and the main output ends are divided into a first slave output end, a second slave output end and a third slave output end; the electromagnetic conversion assembly is used for converting induction electric energy outside the cable into mechanical energy for rotating the main shaft, and then converting the mechanical energy generated by the rotation of the main shaft into usable electric energy through the current amplifier for storage and standby.

According to the technical scheme, the driving assembly comprises a first driving motor, the first driving motor is fixed inside the inner upper shell, a first rotating shaft is arranged on the first driving motor, a driving gear is arranged on the first rotating shaft, a second rotating shaft is arranged inside the inner upper shell, a driven gear is arranged on the second rotating shaft, and chains are arranged outside the driving gear and the driven gear; the driving assembly is used for providing driving power for subsequent detection and reconnection when the cable is subjected to open circuit fault.

According to the technical scheme, the inductance assembly comprises a detection shell and a sliding rod, the detection shell is arranged on one side of a chain, one end of the sliding rod is arranged in an inner upper shell, the other end of the sliding rod is arranged on a first driving motor, a placing plate is arranged on the sliding rod, a limiting clamping groove is formed in one side of the detection shell, a detection needle is arranged on the inner side of the limiting clamping groove, a third rotating shaft is arranged in the detection shell, a poking rod is arranged at one end of the third rotating shaft, a tension rope is arranged at the other end of the poking rod, a rotating poking rod is arranged at the other end of the third rotating shaft, a spiral spring is arranged on the third rotating shaft, and the other end of the spiral spring is arranged in the detection shell; the inductive component functions to detect the location of an open circuit in the cable.

According to the technical scheme, the first circuit breaking reconnection assembly comprises an air pump and an air pump controller, the air pump is fixed inside a placing plate, an air pipe is arranged inside the placing plate, an air groove is formed inside the placing plate, an air outlet pipe is arranged inside the placing plate, a second support is arranged inside the placing plate, and a second sliding rod is arranged inside the placing plate;

the other end of the tension rope is fixed with an air pump controller, the air pump controller is electrically connected with an air pump, one end of the vent pipe is arranged on the air pump, the other end of the vent pipe is arranged at one end of the vent groove, the air outlet pipe is arranged above the vent groove, the other end of the vent groove is provided with a one-way valve, and the inner side of the air outlet pipe is provided with a pneumatic power supply;

the pneumatic power supply comprises a short shaft, the short shaft is rotatably connected with the air outlet pipe, a short rod is arranged on the outer side of the short shaft, two small magnetic blocks are arranged on two sides of the short rod and fixed in the air outlet pipe, and second conducting wires are arranged on the two small magnetic blocks respectively;

the check valve comprises a first support, a first sliding rod is arranged in the center of the first support, a first spring is arranged on one side of the first support, one end of the first spring is fixed to the right end face of the support, a pneumatic block is arranged at the other end of the first spring, the pneumatic block is arranged at one end of the first sliding rod, and a trapezoidal magnetic block is arranged at the other end of the pneumatic block;

the second sliding rod penetrates through the second support, a second spring is arranged on one side of the second support, a push plate is arranged at the other end of the second sliding rod, one end of the second spring is arranged on the lower end face of the second support, the other end of the second spring is arranged on the upper end face of the push plate, a driven magnetic block is arranged at one end of the second sliding rod and located below the trapezoidal magnetic block, and a first puncture needle is arranged on the lower end face of the push plate.

According to the technical scheme, a second driving motor is fixed to the other end of the second lead, the second driving motor is fixed to a placing plate, a driving shaft, a power-on plate and a first air compressor are fixed inside the placing plate, a fourth rotating shaft is arranged on the second driving motor, a driving bevel gear is arranged on the fourth rotating shaft, a driven bevel gear is arranged on the driving shaft and is in transmission connection with the driven bevel gear, a plurality of sets of conducting plates are arranged on one side of the driven bevel gear, limiting grooves are formed in the upper end faces and the lower end faces of the plurality of sets of conducting plates respectively, a limiting rod and a conducting rod are arranged on one side of the plurality of sets of conducting plates, the limiting rod and the conducting rod are arranged on the same side of the conducting plates, an L-shaped conducting block is arranged on one side of the other end of the conducting rod, a clamping block is arranged on the side of the conducting rod far away from the conducting plates, a power-on plate is arranged below the driving shaft, the power-on plate is fixed inside the placing plate, a first air compressor is arranged below the power-on plate, a conducting strip is arranged above the first air compressor, a conducting strip is arranged below the first air compressor, a puncture needle, a second air compressor is arranged below the puncture needle, and a spare wire is arranged outside the first air compressor and a second air compressor.

According to the technical scheme, the second circuit breaking reconnection assembly comprises a second air compressor, the second air compressor is fixed on a placing plate, one side of the second air compressor is provided with a rotary switch, a rotary deflector rod is connected with the rotary switch in a sliding mode, a standby puncture needle placing box is arranged on the lower end face of the second air compressor, and a standby puncture needle outlet is formed in the lower end of the standby puncture needle placing box; the second disconnection and reconnection assembly is used for disconnecting the circuit after the first disconnection and reconnection assembly finishes starting when a plurality of disconnections occur in the cable, and the second disconnection and reconnection assembly continues to reconnect the rest disconnection positions.

According to the technical scheme, the upper assembly comprises a plurality of groups of convex lenses, the groups of convex lenses are arranged on two sides above the outer upper shell, a plurality of sections of telescopic rods are arranged below the groups of convex lenses, the plurality of sections of telescopic rods are of hollow structures, and an opening is formed in one end, away from the convex lenses, of each section of telescopic rod; the lower assembly comprises a limiting plate and a baffle plate, the baffle plate is fixed with one end of the multi-section telescopic rod with an opening, and the limiting plate is connected with the multi-section telescopic rod in a sliding manner; a plurality of groups of grooves are formed in two sides of the upper surface of the outer lower shell, liquid is arranged in the grooves, and the limiting plates are arranged at the top ends of the grooves; the principle of expansion with heat and contraction with cold of air is utilized to make the outer upper shell and the outer lower shell automatically separate when the weather is too hot and the inside of the cable is ventilated, and the outer upper shell and the outer lower shell automatically close to protect the cable from being corroded by cold air and rainwater when the weather is too cold.

According to the technical scheme, the signal mechanism comprises an antenna, one end of the antenna is arranged outside the outer lower shell, a transformer is arranged in the outer lower shell and corresponds to the position of the antenna, the transformer is electrically connected with the antenna, a diode is arranged on one side of the transformer, a lamp holder is arranged on one side of the diode, a bulb is arranged on the lamp holder, and the bulb is arranged outside the outer lower shell; the current is obtained by the antenna, the induced charge is transmitted to the high-voltage winding of the transformer in the form of short pulses, the diode is used for preventing short circuit, and the bulb is lightened after the lamp holder is electrified.

Compared with the prior art, the invention has the following beneficial effects: in the invention, the raw materials are mixed,

(1) The temperature sensing mechanism is arranged, the outer upper shell and the outer lower shell are automatically separated to allow the interior of the cable to ventilate when the weather is overheated by utilizing the principle of expansion with heat and contraction with cold of air, and the outer upper shell and the outer lower shell are automatically closed to protect the cable from being corroded by cold air and rainwater when the weather is supercooled;

(2) The current is obtained by the antenna through the arrangement of the signal mechanism, the induced charge is transmitted to the high-voltage winding of the transformer in a short pulse mode, the diode is used for preventing short circuit, and the bulb is lightened after the lamp holder is electrified to prompt maintenance personnel that the line at the position is normal;

(3) The electromagnetic conversion assembly is arranged, so that the inductive electric energy outside the cable is converted into mechanical energy for rotating the main shaft, and the mechanical energy generated by the rotation of the main shaft is converted into available electric energy through the current amplifier to be stored for later use;

(4) By arranging the driving assembly, when the cable has an open circuit fault, the output switch of the storage battery is closed, so that the main output end is electrified to supply power to each slave output end, and driving power is provided for mechanisms for subsequent detection and reconnection;

(5) By arranging the inductance assembly, when the cable has an open circuit fault, the inductance assembly receives the electric power transmitted by the main output end in the driving assembly, so that the detection shell continuously moves above the cable and accurately detects the position of the break in the cable through the external discharge load at the break position in the induction cable;

(6) By arranging the first disconnection reconnection assembly, when the inductance assembly detects a disconnection position, the poke rod on the detection shell rotates after sensing a discharging load outside the disconnection position, and the switch of the first disconnection reconnection assembly is opened by depending on the rotating force of the poke rod, so that the first disconnection assembly inserts the first puncture needle and the second puncture needle into the cable, and the detected disconnection position is reconnected through the spare wire;

(7) Through being provided with the second and breaking reconnection subassembly, when first reconnection subassembly finishes the circuit and does not UNICOM when starting, prove to take place many places in the cable and break circuit this moment, inductance component continues to remove the detection above the cable, every detects the rotatory driving lever that a position poke rod that opens circuit can all drive its one end and rotates, rotatory driving lever and the starting switch sliding connection of the reconnection subassembly of second start the reconnection subassembly, the second reconnection subassembly is inserted spare pjncture needle in the cable to the reconnection subassembly of second, through first, the outside of second pjncture needle and the spare power line of the outside setting of spare pjncture needle, continue to carry out reconnection to remaining position of opening circuit.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a side sectional structural schematic view of a temperature sensing mechanism of the present invention;

FIG. 2 is a circuit diagram of the signal mechanism of the present invention;

FIG. 3 is a schematic perspective sectional view of the inner upper shell of the present invention;

FIG. 4 is an exploded schematic view of an electromagnetic conversion assembly of the present invention;

FIG. 5 is a schematic cross-sectional front view of a first portion of an electromagnetic conversion assembly of the present invention;

FIG. 6 is a schematic diagram of a second portion of an electromagnetic conversion assembly of the present invention shown in cross-section and in elevation;

FIG. 7 is a front cross-sectional structural schematic view of the drive assembly of the present invention;

FIG. 8 is an enlarged view of portion A of FIG. 7 according to the present invention;

FIG. 9 is a schematic perspective view of the tap lever of the present invention;

fig. 10 is a schematic front cross-sectional view of a second disconnect reconnect assembly of the present invention;

FIG. 11 is a schematic front cross-sectional view of a first portion of the first disconnect reconnect assembly of the present invention;

FIG. 12 is an enlarged view of portion B of FIG. 11 in accordance with the present invention;

FIG. 13 is a schematic view of portion C of FIG. 11 in accordance with the present invention;

fig. 14 is a front cross-sectional structural view of a second portion of the first disconnect reconnect assembly of the invention.

In the figure: 3. a cable; 100. an outer upper housing; 101. an outer lower shell; 102. a convex lens; 103. a multi-section telescopic rod; 104. a baffle plate; 105. a limiting plate; 107. an antenna; 108. a transformer; 109. a diode; 110. a lamp socket; 111. a bulb; 200. an inner upper shell; 201. a housing; 202. iron bars; 203. cutting the rod; 204. a main shaft; 205. cutting the magnetic block; 206. a first conductive line; 207. a current amplifier; 208. an iron block; 209. a storage battery; 210. a first switch; 211. a first drive motor; 212. a driving gear; 213. a chain; 214. placing the plate; 215. a probe housing; 216. a probe pin; 217. a poke rod; 218. a third rotation axis; 219. rotating the deflector rod; 220. a rotary switch; 221. a second air compressor; 222. a standby puncture needle placing box; 223. an outlet of the standby puncture needle; 224. an air pump; 225. a pneumatic block; 226. a trapezoidal magnetic block; 227. an air outlet pipe; 229. a second conductive line; 230. a second drive motor; 231. a conductive plate; 232. a power-on plate; 233. a first air compressor; 234. a driven magnetic block; 235. an inner lower shell; 300. and (5) standby electric wires.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 invention.

Referring to fig. 1-14, the present invention provides the following technical solutions: the utility model provides a line protection measurement and control device of intelligent substation, casing 100 and outer casing 101 down on including outer, outer casing 100 and outer casing 101 cover are established in the cable 3 outside of going up, outer casing 100 and outer casing 101 sliding connection down, the inboard of outer casing 100 of going up is fixed with interior casing 200, the inside of interior casing 200 of going up is fixed with temperature sensing mechanism, absorption mechanism and disconnection reconnection mechanism, the inside of outer casing 101 is fixed with signal mechanism down, temperature sensing mechanism adjusts by oneself according to outside temperature's change and protects cable 3, absorption mechanism utilizes the influence that the electric current produced in cable 3 as the drive source of self, disconnection reconnection mechanism detects circuit position and reconnection in cable 3.

The absorption mechanism comprises an electromagnetic conversion assembly and a driving assembly, and the electromagnetic conversion assembly is electrically connected with the driving assembly; the circuit breaking reconnection mechanism comprises an inductance assembly, a first circuit breaking reconnection assembly and a second circuit breaking reconnection assembly, wherein the inductance assembly is fixed with the first circuit breaking reconnection assembly, and is connected with the second circuit breaking reconnection assembly in a sliding manner; the temperature sensing mechanism is divided into an upper assembly fixed inside the outer upper casing 100 and a lower assembly welded inside the outer lower casing 101.

The upper assembly comprises a plurality of groups of convex lenses 102, the groups of convex lenses 102 are fixed on two sides above the outer upper shell 100, a plurality of sections of telescopic rods 103 are welded below the groups of convex lenses 102, the plurality of sections of telescopic rods 103 are of hollow structures, and one ends of the plurality of sections of telescopic rods 103, which are far away from the convex lenses 102, are provided with openings; the lower component comprises a limiting plate 105 and a baffle plate 104, the baffle plate is fixed with one end of the multi-section telescopic rod 103 with an opening, and the limiting plate 105 is connected with the multi-section telescopic rod 103 in a sliding manner; a plurality of groups of grooves are formed in two sides of the upper surface of the outer lower shell 101, liquid is placed inside the plurality of groups of grooves, the liquid is preferably ethanol, the ethanol has volatility, and the limiting plates 105 are welded at the top ends of the grooves.

The signal mechanism comprises an antenna 107, one end of the antenna 107 is placed outside the outer lower shell 101, a transformer 108 is fixed inside the outer lower shell 101 corresponding to the position of the antenna 107, the transformer 108 is electrically connected with the antenna 107, one side of the transformer 108 is electrically connected with a diode 109, one side of the diode 109 is electrically connected with a lamp holder 110, a lamp bulb 111 is inserted into the lamp holder 110, and the lamp bulb 111 is fixed outside the outer lower shell 101.

The electromagnetic conversion assembly comprises a machine shell 201, the machine shell 201 is fixed inside an upper shell 200, the inside of the machine shell 201 is connected with a plurality of groups of iron bars 202 through a bearing, the inner side of the plurality of groups of iron bars 202 is clamped with a plurality of groups of thin insulating plates, the inside of the machine shell 201 is connected with a main shaft 204 through a bearing, the main shaft 204 penetrates through the plurality of groups of thin insulating plates, one end of the main shaft 204 outside the machine shell 201 is welded with two cutting magnetic blocks 205, a cutting rod 203 is placed between the two cutting magnetic blocks 205, one side of the two cutting magnetic blocks 205 is respectively fixed with a first lead 206, the first lead 206 is electrically connected with a current amplifier 207, one side of the first lead 206 is wound with an iron block 208, a first switch 210 is fixed below the iron block 208, a storage battery 209 is placed on one side of the iron block 208, one end of the first switch 210 is electrically connected on the storage battery 209, the other end of the first switch 210 is a main output end, the main output end is divided into a first slave output end, the second slave output end and a third slave output end.

The driving assembly comprises a first driving motor 211, the first driving motor 211 is fixed inside the inner upper shell 200, a first rotating shaft is sleeved on the first driving motor 211, a driving gear 212 is welded on the first rotating shaft, a second rotating shaft is connected inside the inner upper shell 200 through a bearing, a driven gear is welded on the second rotating shaft, and a chain 213 is meshed and connected with the driving gear 212 and the driven gear.

The inductance assembly comprises a detection shell 215 and a sliding rod, the detection shell 215 is installed on one side of a chain 213 through a screw, one end of the sliding rod is installed inside an upper shell 200, the other end of the sliding rod is welded on a first driving motor 211, a placing plate 214 is connected to the outer side of the sliding rod in a sliding mode, a limiting clamping groove is formed in the surface of the detection shell 215, a detection needle 216 is connected to the inner side of the limiting clamping groove in a sliding mode, the inside of the detection shell 215 is connected with a third rotating shaft 218 through a bearing, a poking rod 217 is fixed to one end of the third rotating shaft 218, a tension rope is fixed to the other end of the poking rod 217, a rotary poking rod 219 is machined at the other end of the third rotating shaft 218 through a lathe, a spiral spring is fixed to the third rotating shaft 218, and the other end of the spiral spring is fixed to the inside of the detection shell 215.

The first breaking reconnection assembly comprises an air pump 224 and an air pump controller, the air pump 224 is fixed inside the placing plate 214, an air pipe is fixed inside the placing plate 214, an air groove is formed inside the placing plate 214, an air outlet pipe 227 is fixed inside the placing plate 214, a second support is welded inside the placing plate 214, and a second sliding rod is connected inside the placing plate 214 in a sliding manner;

the other end of the tension rope is fixed with an air pump controller, the air pump controller is electrically connected with an air pump 224, one end of a vent pipe is sleeved on the air pump 224, the other end of the vent pipe is sleeved at one end of a vent groove, an air outlet pipe 227 is fixed above the vent groove, a one-way valve is fixed at the other end of the vent groove, and the inner side of the air outlet pipe 227 is rotatably connected with a pneumatic power supply;

the pneumatic power supply comprises a short shaft, the short shaft is connected with the air outlet pipe 227 through a bearing, a short rod is welded on the outer side of the short shaft, two small magnetic blocks are placed on two sides of the short rod and fixed inside the air outlet pipe 227, and second conducting wires 229 are fixed on the two small magnetic blocks respectively;

the check valve comprises a first support, a first sliding rod is connected to the center of the first support in a sliding mode, a first spring is placed on one side of the first support, one end of the first spring is fixed to the right end face of the support, a pneumatic block 225 is welded to the other end of the first spring, the pneumatic block 225 is fixed to one end of the first sliding rod, and a trapezoidal magnetic block 226 is bonded to the other end of the pneumatic block 225;

the second slide bar runs through the second support, and the second spring has been placed to one side of second support, and the other end of second slide bar is fixed with the push pedal, and the one end welding of second spring is on the lower terminal surface of second support, and the other end welding of second spring is on the up end of push pedal, and the one end of second slide bar is fixed with driven magnetic path 234, and driven magnetic path 234 is located the below of trapezoidal magnetic path 226, has cup jointed first pjncture needle on the lower terminal surface of push pedal.

A second driving motor 230 is fixed to the other end of the second lead 229, the second driving motor 230 is fixed to the placing plate 214, a driving shaft is fixed inside the placing plate 214, a power-on plate 232 and a first air compressor 233 are fixed to the inside of the placing plate 214, a fourth rotating shaft is sleeved on the second driving motor 230, a driving bevel gear is welded to the fourth rotating shaft, a driven bevel gear is connected to the driving shaft through a bearing, the driving bevel gear is in transmission connection with the driven bevel gear, a plurality of groups of conducting plates 231 are connected to the right side of the driven bevel gear through a bearing, limiting grooves are respectively formed in the upper end faces and the lower end faces of the groups of conducting plates 231, limiting rods are welded to one sides of the groups of conducting plates 231, a conducting rod is connected to one side of the groups of the conducting plates 231 through a bearing, the limiting rods and the conducting rods are fixed to the same side of the conducting plates 231, a clamping block is fixed to one side of the conducting rod far away from the conducting plates 231, the power-on plate 232 is placed below the driving shaft, the power-on plate 232 is fixed to the first air compressor 233, a conducting strip is electrically connected to the top of the first air compressor 233 through an electrical connection, and a second air compressor 300 is sleeved on the outside of the second air compressor.

The second disconnection reconnection assembly comprises a second air compressor 221, the second air compressor 221 is fixed on the placing plate 214, a rotary switch 220 is arranged at the top end of the second air compressor 221, a rotary driving rod 219 is connected with the rotary switch 220 in a sliding mode, a standby puncture needle placing box 222 is welded on the lower end face of the second air compressor 221, and a standby puncture needle outlet 223 is fixed at the lower end of the standby puncture needle placing box 222.

The working principle is as follows: when the outside air temperature is too high, the convex lens condenses light to volatilize ethanol in the outer lower shell, meanwhile, air in the groove expands due to heating to enable the outer upper shell and the outer lower shell to be automatically separated to enable the interior of the cable to be breathable, and when the outside air temperature is too low, the air in the outer lower shell shrinks, so that the outer upper shell and the outer lower shell are automatically closed to protect the cable from being corroded by cold air and rainwater;

when the cable works normally, induced electricity is generated around the cable, the induced electricity is absorbed by the wire, the induced electricity is transmitted to a high-voltage winding of the transformer in a short pulse mode through the spark plug, the voltage on the transformer is reduced, the current is increased, and the power is supplied to the bulb, so that the condition of the section of the circuit is good, if the cable is in an open circuit condition, the bulb in the section of the circuit is extinguished, and a maintenance worker can quickly know the fault of the section of the circuit according to the extinction of the bulb;

when current flows through the cable, a rotating magnetic field can be generated, according to Faraday's law, electromagnetism can be generated in the iron bar due to fluctuation of the magnetic field, the electromagnetism can generate current flowing through the iron bar, magnetic force can be generated in the iron bar according to Lawrenz's law, so that the iron bar can rotate in the shell through the bearing, a plurality of thin insulating plates are arranged for enhancing magnetic induction, eddy current loss can be minimized, induced electricity is converted into mechanical energy for rotating the main shaft and then transmitted by the main shaft, and the induced electricity generated by the current flowing through the cable is used as a driving power supply and is amplified and stored in a storage battery through a current amplifier;

when the cable has an open circuit fault, the induced current disappears, the main shaft does not rotate any more, the current does not flow on the first lead 206 any more, the iron block 208 wound on the first lead 206 is changed from an electromagnet into a common iron block, the common iron block loses the adsorption on the first switch 210 below the common iron block, the first switch 210 is closed, and the storage battery 209 supplies power for other mechanisms through the main output end on the right side of the first switch;

the first driven output end supplies power to a first driving motor 211, and the motor pneumatically drives a first rotating shaft and a driving gear to rotate and simultaneously drives a chain outside the driving gear and a driven gear to rotate;

the detection shell 215 is fixed on one side of the chain and moves above the cable 3 along with the chain to detect the cable, when the open circuit position is detected, the detection needle absorbs the external discharge load at the open circuit position to enable the poke rod to rotate, the poke rod pulls the pull rope at the top end to start the air pump, the air pump pumps the air in the device into the air channel through the air pipe to push the pneumatic block 225 in the one-way valve to slide, the trapezoidal magnetic block 226 on the right side of the pneumatic block 225 moves rightwards, and the driven magnetic block is pushed to move downwards according to the principle that like poles of magnetic substances repel each other, so that the second slide rod pushes the push plate to insert the first puncture needle into the open circuit position of the cable;

the air outlet pipe 227 is not blocked any more when the pneumatic block moves to the right, the pumped air is blown out from the air outlet pipe 227 for recycling, when the air passes through the air outlet pipe 227, a short rod welded on the outer side of the short shaft is blown, the short rod rotates between the two small magnetic blocks to perform magnetic induction line cutting motion, so that current flows in the second conducting wire 229, the other end of the second conducting wire is connected with the second driving motor 230 to supply power to the second driving motor 230, the second driving motor 230 is started to drive the fourth rotating shaft and the driving bevel gear to rotate, the driving bevel gear is meshed with the driven bevel gear to drive the driving shaft to rotate, the anode of the third driven output end is connected to the driving shaft, the negative pole is connected to the first air compressor, the first air compressor is electrified to start by mutual contact of the current-conducting plate 231, the current-conducting rod and the current-conducting plate, the second puncture needle is pushed into the circuit-breaking position in the cable, the first puncture needle and the second puncture needle are connected through the standby power line 300, the circuit-breaking position is reconnected, in order to prevent the circuit-breaking position from being too large, the driving shaft is connected with a plurality of current-conducting plates through bearings, the fixture block is clamped into the groove of the second current-conducting plate through rotation of the first current-conducting plate, the second current-conducting plate is driven to rotate, and the air compressor below the second current-conducting plate is started to insert the puncture needle into the cable;

when the first open circuit position in the cable 3 is reconnected, if the circuit recovery circuit can pass through the device, the device stops running, if the circuit is not connected, another open circuit position is proved, the device continues running, the detection shell 215 continues moving, when the detection shell 215 moves to one open circuit position, the poke rod 217 rotates and then is rebounded and brought back by the spiral spring, when the poke rod 217 rotates, the rotary poke rod 219 is driven to rotate, the rotary poke rod 219 is in sliding connection with the rotary switch 220 on the second air compressor 221, the rotary poke rod 219 rotates to drive the rotary switch 220 to rotate to start the second air compressor 221, and the second air compressor 221 pushes the spare puncture needle in the spare puncture needle placement box 222 below out of the spare puncture needle outlet 223 to insert the spare puncture needle into the open circuit position for communication.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a line protection measurement and control device of intelligent substation which characterized in that: the line protection and measurement and control device comprises an outer upper shell (100) and an outer lower shell (101), wherein the outer upper shell (100) and the outer lower shell (101) are arranged on the outer side of a cable (3), the outer upper shell (100) and the outer lower shell (101) are connected in a sliding manner, the inner side of the outer upper shell (100) is provided with an inner upper shell (200), a temperature sensing mechanism, an absorption mechanism and a circuit breaking reconnection mechanism are arranged inside the inner upper shell (200), a signal mechanism is arranged inside the outer lower shell (101), the absorption mechanism is electrically connected with the circuit breaking reconnection mechanism, the temperature sensing mechanism automatically adjusts and protects the cable (3) according to the change of the outside air temperature, the absorption mechanism utilizes the induced electricity generated by the current in the cable (3) as the driving source of the absorption mechanism, and the circuit breaking reconnection mechanism detects the circuit position in the cable (3) and reconnects the circuit breaking reconnection mechanism;

the absorption mechanism comprises an electromagnetic conversion assembly and a driving assembly, and the electromagnetic conversion assembly is electrically connected with the driving assembly; the circuit breaking reconnection mechanism comprises an inductance assembly, a first circuit breaking reconnection assembly and a second circuit breaking reconnection assembly, wherein the inductance assembly is fixed with the first circuit breaking reconnection assembly, and is connected with the second circuit breaking reconnection assembly in a sliding mode; the temperature sensing mechanism is divided into an upper assembly and a lower assembly, the upper assembly is connected with the lower assembly in a sliding mode, the upper assembly is arranged inside the outer upper shell (100), and the lower assembly is arranged inside the outer lower shell (101);

the upper assembly comprises a plurality of groups of convex lenses (102), the groups of convex lenses (102) are arranged on two sides above the outer upper shell (100), a plurality of sections of telescopic rods (103) are arranged below the groups of convex lenses (102), the plurality of sections of telescopic rods (103) are of hollow structures, and an opening is formed in one end, far away from the convex lenses (102), of each section of telescopic rod (103); the lower assembly comprises a limiting plate (105) and a baffle plate (104), the baffle plate is fixed to one end, with an opening, of the multi-section telescopic rod (103), and the limiting plate (105) is connected with the multi-section telescopic rod (103) in a sliding mode; a plurality of groups of grooves are formed in two sides of the upper surface of the outer lower shell (101), liquid is arranged in the grooves in a plurality of groups, and the limiting plates (105) are arranged on the top ends of the grooves.

2. The line protection measurement and control device of the intelligent substation according to claim 1, characterized in that: the signal mechanism comprises an antenna (107), one end of the antenna (107) is arranged outside the lower shell (101), a transformer (108) is arranged at the position, corresponding to the antenna (107), inside the lower shell (101) and electrically connected with the antenna (107), a diode (109) is arranged on one side of the transformer (108), a lamp holder (110) is arranged on one side of the diode (109), a bulb (111) is arranged on the lamp holder (110), and the bulb (111) is arranged outside the lower shell (101).