CN113281558B - Overvoltage detection alarm device for power distribution network - Google Patents
Overvoltage detection alarm device for power distribution network Download PDFInfo
- Publication number
- CN113281558B CN113281558B CN202110421489.XA CN202110421489A CN113281558B CN 113281558 B CN113281558 B CN 113281558B CN 202110421489 A CN202110421489 A CN 202110421489A CN 113281558 B CN113281558 B CN 113281558B
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- voltage detector
- insulation box
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- heat dissipation
- embedded
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Alarm Devices (AREA)
- Fuses (AREA)
Abstract
The invention discloses an overvoltage detection alarm device for a power distribution network. The intelligent power distribution system comprises a voltage detector, wherein an insulation box is embedded and installed on one side of the outer top end of the voltage detector, an insulation shifting block is slidably installed in the middle of the outer top end of the insulation box, a warning lamp rod is installed on one side of the outer portion of the insulation box, a buzzer alarm is embedded and installed on the other side of the outer portion of the insulation box, a resistance coil is fixedly installed at the bottom end inside the insulation box, and a sliding rod is fixedly installed on the top end inside the insulation box.
Description
Technical Field
The invention relates to the technical field of power equipment detection equipment, in particular to an overvoltage detection warning device for a power distribution network.
Background
The neutral point is not grounded and the power system of the grounding or high-resistance grounding mode through the arc suppression coil, most of the domestic power grids of 66kV and below adopt the grounding mode, the full-voltage detection and wave recording device is an intelligent integrated controller developed by the company aiming at various faults in the power system, the device can be arranged on each level bus of a 3-35 kV substation, and various fault states of the power grids can be rapidly and accurately identified through sampling and analyzing secondary signals of the voltage transformer and the current transformer, and corresponding control, alarm and locking instructions are sent out. The method is used for identifying and controlling faults such as voltage out-of-limit, PT wire breakage, single-phase grounding, ferroresonance, lightning stroke or operation overvoltage, system harmonic and the like which are common to a power grid and are easy to cause tripping accidents, and simultaneously recording and analyzing fault waveforms, and detecting phase voltage and line voltage of normal operation of the system in real time.
However, when the existing overvoltage detection device for the power distribution network is used, the problem that the application range of the voltage detector to the power distribution network is smaller because the application performance and the alarm function of the voltage detector to the power distribution network with different specifications cannot be realized exists.
Disclosure of Invention
The invention aims to provide an overvoltage detection alarm device for a power distribution network, which solves the problem that the application range of a voltage detector to the power distribution network is smaller because the application performance and the alarm function of the voltage detector to the power distribution network with different specifications cannot be realized when the conventional overvoltage detection device for the power distribution network is used.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a distribution network overvoltage detection alarm device, includes voltage detector and maintenance end cover, maintenance end cover fixed joint is installed the outside top of voltage detector, its characterized in that, the outside top one side embedding of voltage detector is installed alert subassembly, the inside bottom of alert subassembly is installed and is broken circuit the subassembly, the radiator unit is all installed to the outside both sides of voltage detector, alert subassembly is used for right the inside voltage of voltage detector detects and reports to the police to the excessive pressure, the subassembly that breaks circuit is used for under the overvoltage condition the voltage detector breaks circuit, the radiator unit is used for right the inside heat dissipation of voltage detector.
Further, the alarm assembly comprises an insulation box, an insulation shifting block, a warning lamp rod, a buzzer alarm, a resistance coil, a sliding rod, an arc sliding sheet and a limiting sliding cover, wherein the insulation box is embedded and installed on one side of the outer top end of the voltage detector, the insulation shifting block is slidably installed on the middle part of the outer top end of the insulation box, the warning lamp rod is installed on one side of the outer portion of the insulation box, the buzzer alarm is embedded and installed on the other side of the outer portion of the insulation box, the resistance coil is fixedly installed on the bottom end inside the insulation box, the sliding rod is fixedly installed on the top end inside the insulation box, and the arc sliding sheet is fixedly installed on two sides of the bottom end of the insulation shifting block.
Further, the limit sliding cover is embedded and installed at the position of the top end inside the insulation box, which corresponds to the insulation shifting block, and the bottom end of the insulation shifting block is fixedly connected with the limit sliding cover through an I-shaped sliding block.
Further, the circuit breaking assembly is installed in the inside bottom embedding of arc gleitbretter, the circuit breaking assembly includes conductive contact, fusible plug, movable end plate and compression spring, conductive contact embedding is installed in the inside bottom of arc gleitbretter, the fusible plug cup joints and installs conductive contact is outside, movable end plate fixed mounting is in conductive contact top, compression spring embedding is installed the outside bottom both sides of movable end plate.
Further, the inside embedding of voltage detector installs the radiator unit, the radiator unit includes aiutage, radiator fan, stores up ammonia sacculus ball, activity end block, exhaust groove and supporting spring, the aiutage embedding is rotated and is installed the inside bottom middle part of voltage detector, the radiator fan evenly runs through the embedding and installs the outside both sides of aiutage, store up ammonia sacculus ball and install the inside middle part of radiator fan, the activity end block is installed the inside top of radiator fan, the exhaust groove is seted up radiator fan inner wall top both sides are close to activity end block position department, supporting spring installs the outside top of activity end block.
Furthermore, the fusible plug is made of carbon steel composite alloy material.
Further, a first binding post is arranged at the top end of one side of the outer wall of the insulation box, and a second binding post is arranged at the bottom end of one side of the outer wall of the insulation box.
Furthermore, the early warning lamp rod is a high-power halogen lamp, and the inside of the early warning lamp rod is filled with shielding gas argon.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the alarm assembly is arranged, the arc sliding vane at the bottom end of the arc sliding vane can be fixed at different positions of the buzzer alarm by stirring the sliding of the insulating shifting block at the sliding rod, the resistance value inside the insulating box can be changed according to the actual distribution network detection voltage, when the voltage of the distribution network generates overvoltage, the output current inside the insulating box is overlarge, and the alarm can be detected and warned to workers through the conduction of the internal currents of the alarm lamp rod and the buzzer alarm by the flickering of the alarm lamp rod and the buzzing generated by the buzzer alarm, so that the application performance and the alarm function of the voltage detector to the distribution network with different specifications are realized, and the application range of the voltage detector to the distribution network is enlarged.
Through being provided with the subassembly that opens circuit, when the inside arc gleitbretter of insulating box is in the overvoltage condition for a long time, cause insulating box inside temperature to rise under the effect of the inside electric current of arc gleitbretter for the fusible plug of the inside bottom of arc gleitbretter takes place to melt, separates between conductive contact piece and the buzzer siren under the effect of movable end plate bottom side compression spring, thereby has realized the protection of opening circuit to insulating box inside under the long-time overvoltage condition, has improved security performance and durability when the device is used.
Through being provided with the radiator unit, can produce the air current through radiator fan's rotation to the cooperation stores up the inside ammonia of ammonia gasbag ball and is heated expansion, can upwards jack-up the inside movable end piece of aiutage, can discharge the inside hot air of aiutage by the exhaust groove, thereby improved the inside heat dispersion of voltage detector, when the temperature reduces, and through storing up the inside shrink of ammonia gasbag ball, can reset movable end piece by supporting spring, seal aiutage inside, solved the dust in the external environment and fallen into the inside accumulative problem of voltage detector easily, improved the inside dustproof performance of voltage detector.
Drawings
FIG. 1 is a schematic diagram of a voltage detector according to an embodiment of the invention;
fig. 2 is a schematic perspective view of the insulation box in the embodiment of fig. 1;
FIG. 3 is a schematic view of the structure of the inside of the insulation box in the embodiment of FIG. 1;
FIG. 4 is a schematic perspective view of the arc-shaped slider mounting in the embodiment of FIG. 1;
FIG. 5 is an enlarged schematic view of the structure at A in FIG. 4;
FIG. 6 is a schematic diagram of the structure of the voltage detector in the embodiment of FIG. 1;
fig. 7 is an enlarged schematic view of the structure at B in fig. 6.
Reference numerals: 1. a voltage detector; 2. an alarm assembly; 201. an insulation box; 202. an insulating poking block; 203. a warning light bar; 204. a buzzer alarm; 205. a resistance coil; 206. a slide bar; 207. arc sliding sheets; 208. limiting sliding cover; 3. a circuit breaking assembly; 301. a conductive contact; 302. a fusible plug; 303. A movable end plate; 304. a compression spring; 4. a heat dissipation assembly; 401. an exhaust pipe; 402. a heat dissipation blower; 403. an ammonia storage balloon; 404. a movable end block; 405. an exhaust groove; 406. a support spring; 5. a first terminal; 6. a second binding post; 7. and (5) overhauling the end cover.
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 creative efforts, are within the protection scope of the invention.
Referring to fig. 1-7, an overvoltage detection alarm device for a power distribution network includes a voltage detector 1 and an overhaul end cover 7, wherein the overhaul end cover 7 is fixedly clamped and installed at the top end of the outside of the voltage detector 1, an alarm assembly 2 is embedded and installed at one side of the top end of the outside of the voltage detector 1, a circuit breaking assembly 3 is installed at the bottom end of the inside of the alarm assembly 2, heat dissipation assemblies 4 are installed at two sides of the outside of the voltage detector 1, the alarm assembly 2 includes an insulation box 201, an insulation shifting block 202, an alarm rod 203, a buzzer alarm 204, a resistor coil 205, a sliding rod 206, an arc sliding sheet 207 and a limiting sliding cover 208, the insulation box 201 is embedded and installed at one side of the top end of the outside of the voltage detector 1, the insulation shifting block 202 is slidably installed at the middle of the top end of the outside of the insulation box 201, a pre-alarm lamp rod 203 is installed at one side of the outside of the insulation box 201, the buzzer alarm 204 is embedded and installed on the other side outside the insulation box 201, the resistance coil 205 is fixedly installed at the bottom end inside the insulation box 201, the sliding rod 206 is fixedly installed at the top end inside the insulation box 201, the arc sliding sheets 207 are fixedly installed at the two sides of the bottom end of the insulation shifting block 202, the arc sliding sheets 207 at the bottom end of the arc sliding sheets are fixed at different positions of the buzzer alarm 204 by shifting the sliding of the insulation shifting block 202, the resistance value inside the insulation box 201 can be changed according to the actual distribution network detection voltage, when the distribution network voltage generates overvoltage, the output current inside the insulation box 201 is overlarge, the overvoltage detection alarm can be performed on workers by the flickering of the early warning lamp rod 203 and the buzzing generated by the buzzer alarm 204 through the conduction of the current inside the early warning lamp rod 203, therefore, the application performance and the alarm function of the voltage detector 1 to the power distribution network voltages with different specifications are realized, and the application range of the voltage detector 1 to the power distribution network is enlarged.
In order to ensure the tightness and the insulation performance between the bottom end of the insulation shifting block 202 and the top end of the insulation box 201, the damage of electrical elements in the insulation box 201 caused by the falling of external dust into the insulation box 201 is avoided, the limit sliding cover 208 is embedded and installed at the position of the top end in the insulation box 201 corresponding to the insulation shifting block 202, and the bottom end of the insulation shifting block 202 is fixedly connected with the limit sliding cover 208 through an I-shaped sliding block.
The circuit breaking assembly 3 is embedded and installed at the inner bottom end of the arc sliding sheet 207, the circuit breaking assembly 3 comprises a conductive contact 301, a fusible plug 302, a movable end plate 303 and a compression spring 304, the conductive contact 301 is embedded and installed at the inner bottom end of the arc sliding sheet 207, the fusible plug 302 is sleeved and installed outside the conductive contact 301, the movable end plate 303 is fixedly installed at the top end of the conductive contact 301, the compression spring 304 is embedded and installed at two sides of the outer bottom end of the movable end plate 303, when the arc sliding sheet 207 in the insulation box 201 is in an overvoltage state for a long time, the inner temperature of the insulation box 201 is raised under the action of the inner current of the arc sliding sheet 207, the fusible plug 302 at the inner bottom end of the arc sliding sheet 207 is melted, the conductive contact 301 is separated from the buzzer alarm 204 under the action of the compression spring 304 at the bottom end of the movable end plate 303, and thus the circuit breaking protection of the inside the insulation box 201 is realized under the long-time overvoltage state, and the safety performance and the durability of the device in use are improved.
The voltage detector 1 is inside to be embedded to install radiator assembly 4, radiator assembly 4 includes the aiutage 401, radiator fan 402, store up ammonia sacculus 403, movable end block 404, exhaust groove 405 and supporting spring 406, the aiutage is rotated and is installed at the inside bottom middle part of voltage detector 1, radiator fan 402 evenly runs through the embedding and installs in the outside both sides of aiutage 401, store up ammonia sacculus 403 and install at the inside middle part of radiator fan 402, movable end block 404 installs on the inside top of radiator fan 402, the exhaust groove 405 is offered and is close to movable end block 404 position department on radiator fan 402 inner wall top both sides, supporting spring 406 installs on the outside top of movable end block 404, can produce the air current through the rotation of radiator fan 402, and the thermal expansion of the inside ammonia of cooperation store up ammonia sacculus 403 can be upwards jacked up the inside movable end block 404 of aiutage 401, by exhaust groove 405 can be discharged the inside hot air of aiutage 401, thereby the inside heat dispersion of voltage detector 1 has been improved, when the temperature reduces, and through the shrink of the inside ammonia of store up ammonia sacculus 403, can reset movable end block 404, the inside to detect the inside dust-proof performance of inside the inside voltage detector 1 has been improved to the inside of the dust-proof detector of the voltage detector 401 by supporting spring 406.
In order to reduce the melting point of the fusible plug 302, the fusible plug 302 is ensured to melt in a high-temperature environment, and the stability and reliability of the operation of the circuit breaking assembly 3 are ensured, and the fusible plug 302 is made of carbon steel composite alloy materials.
The first binding post 5 is installed on the top end of one side of the outer wall of the insulation box 201, the second binding post 6 is installed on the bottom end of one side of the outer wall of the insulation box 201, and the power supply in the insulation box 201 can be connected through the first binding post 5 and the second binding post 6 to form a loop.
In order to ensure that the warning light bar 203 is turned on in an overpressure state and to improve durability of the use of the warning light bar 203, the warning light bar 203 is a high-power halogen lamp, and the inside of the warning light bar 203 is filled with a shielding gas of argon.
In summary, when the overvoltage detection alarm device for the power distribution network provided by the invention works, firstly, by poking the sliding of the insulating poking block 202 at the sliding rod 206, the arc sliding sheet 207 at the bottom end of the insulating poking block can be fixed at different positions of the buzzer alarm 204, the resistance value inside the insulating box 201 can be changed according to the actual power distribution network detection voltage, and when the power distribution network voltage generates overvoltage, the output current inside the insulating box 201 is overlarge, and the overvoltage detection alarm can be performed on staff by the flickering of the early warning lamp 203 and the buzzing generated by the buzzer alarm 204 through the conduction of the current inside the early warning lamp 203 and the buzzing alarm 204;
then, when the arc sliding sheet 207 in the insulation box 201 is in an overvoltage state for a long time, the temperature in the insulation box 201 is raised under the action of the current in the arc sliding sheet 207, so that the fusible plug 302 at the bottom end in the arc sliding sheet 207 melts, and the conductive contact 301 is separated from the buzzer alarm 204 under the action of the side compression spring 304 at the bottom end of the movable end plate 303, thereby realizing the circuit breaking protection of the inside of the insulation box 201 under the overvoltage state for a long time;
finally, the air flow can be generated through the rotation of the heat dissipation fan 402, and the air flow is matched with the heated expansion of ammonia in the ammonia storage balloon 403, so that the movable end block 404 in the exhaust barrel 401 can be jacked up upwards, hot air in the exhaust barrel 401 can be discharged through the exhaust groove 405, and when the temperature is reduced, the movable end block 404 can be reset through the contraction of ammonia in the ammonia storage balloon 403, and the inside of the exhaust barrel 401 is sealed through the supporting spring 406.
It is noted that relational terms such as first and second, and the like are 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. Moreover, 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.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a distribution network overvoltage detection alarm device, includes voltage detector (1) and overhauls end cover (7), overhaul end cover (7) fixed joint is installed voltage detector (1) outside top, a serial communication port, alarm module (2) are installed in embedding of voltage detector (1) outside top one side, alarm module (3) are installed to alarm module (2) inside bottom, heat dissipation subassembly (4) are all installed to voltage detector (1) outside both sides, alarm module (2) are used for detecting voltage detector (1) inside and report to the police to the excessive pressure, circuit breaking subassembly (3) are used for carrying out the circuit breaker to voltage detector (1) under the excessive pressure state, heat dissipation subassembly (4) are used for carrying out the heat dissipation to voltage detector (1) inside;
the alarm assembly (2) comprises an insulation box (201), an insulation shifting block (202), a warning lamp rod (203), a buzzer alarm (204), a resistor coil (205), a sliding rod (206), an arc sliding sheet (207) and a limiting sliding cover (208), wherein the insulation box (201) is embedded and installed on one side of the top end outside the voltage detector (1), the insulation shifting block (202) is slidably installed in the middle of the top end outside the insulation box (201), the warning lamp rod (203) is installed on one side outside the insulation box (201), the buzzer alarm (204) is embedded and installed on the other side outside the insulation box (201), the resistor coil (205) is fixedly installed at the bottom end inside the insulation box (201), the sliding rod (206) is fixedly installed at the top end inside the insulation box (201), and the arc sliding sheet (207) is fixedly installed on two sides of the bottom end of the insulation shifting block (202).
The limiting sliding cover (208) is embedded and arranged at the position of the top end inside the insulating box (201) corresponding to the insulating shifting block (202), and the bottom end of the insulating shifting block (202) is fixedly connected with the limiting sliding cover (208) through an I-shaped sliding block;
the arc sliding sheet (207) is inside bottom embedding and installs circuit breaking assembly (3), circuit breaking assembly (3) are including electrically conductive contact (301), fusible plug (302), movable end plate (303) and compression spring (304), electrically conductive contact (301) are embedded and are installed the inside bottom of arc sliding sheet (207), fusible plug (302) cup joint and install electrically conductive contact (301) are outside, movable end plate (303) fixed mounting is in electrically conductive contact (301) top, compression spring (304) are embedded and are installed movable end plate (303) are outside bottom both sides.
2. The distribution network overvoltage detection alarm device according to claim 1, wherein a heat dissipation assembly (4) is embedded and installed inside the voltage detector (1), the heat dissipation assembly (4) comprises an exhaust drum (401), a heat dissipation fan (402), an ammonia storage bag ball (403), a movable end block (404), an exhaust groove (405) and a supporting spring (406), the exhaust drum (401) is embedded and rotationally installed in the middle of the bottom inside the voltage detector (1), the heat dissipation fan (402) is evenly embedded and installed on two sides outside the exhaust drum (401), the ammonia storage bag ball (403) is installed in the middle inside the heat dissipation fan (402), the movable end block (404) is installed on the top inside the heat dissipation fan (402), the exhaust groove (405) is formed in the position, close to the movable end block (404), of the two sides of the top of the inner wall of the heat dissipation fan (402), and the supporting spring (406) is installed on the top outside the movable end block (404).
3. The distribution network overvoltage detection alarm device according to claim 1, wherein the fusible plug (302) is made of carbon steel composite alloy material.
4. The overvoltage detection alarm device for the power distribution network according to claim 1, wherein a first binding post (5) is arranged at the top end of one side of the outer wall of the insulation box (201), and a second binding post (6) is arranged at the bottom end of one side of the outer wall of the insulation box (201).
5. The distribution network overvoltage detection alarm device according to claim 1, wherein the warning light bar (203) is a high-power halogen lamp, and the inside of the warning light bar (203) is filled with shielding gas argon.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110421489.XA CN113281558B (en) | 2021-04-20 | 2021-04-20 | Overvoltage detection alarm device for power distribution network |
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|---|---|---|---|
| CN202110421489.XA CN113281558B (en) | 2021-04-20 | 2021-04-20 | Overvoltage detection alarm device for power distribution network |
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| CN113281558A CN113281558A (en) | 2021-08-20 |
| CN113281558B true CN113281558B (en) | 2023-09-05 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113848353B (en) * | 2021-09-15 | 2024-06-21 | 宁波双启新能源科技有限公司 | Distributed intelligent power monitoring system |
| CN117060567B (en) * | 2023-08-24 | 2024-02-02 | 东营市沃格艾迪石油技术有限公司 | Intelligent operation protection integrated device for electric submersible pump |
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|---|---|
| CN113281558A (en) | 2021-08-20 |
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