CN114552477A - Ring main unit switch structure with bilateral isolation knife for integrated online monitoring function - Google Patents
Ring main unit switch structure with bilateral isolation knife for integrated online monitoring function Download PDFInfo
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- CN114552477A CN114552477A CN202210260823.2A CN202210260823A CN114552477A CN 114552477 A CN114552477 A CN 114552477A CN 202210260823 A CN202210260823 A CN 202210260823A CN 114552477 A CN114552477 A CN 114552477A
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- temperature sensor
- main unit
- ring main
- switch
- isolation
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- 238000002955 isolation Methods 0.000 title claims abstract description 59
- 238000012544 monitoring process Methods 0.000 title claims abstract description 27
- 230000002146 bilateral effect Effects 0.000 title claims abstract description 12
- 230000003068 static effect Effects 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 14
- 229910052802 copper Inorganic materials 0.000 claims description 14
- 239000010949 copper Substances 0.000 claims description 14
- 239000004020 conductor Substances 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 238000009529 body temperature measurement Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/0354—Gas-insulated switchgear comprising a vacuum switch
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
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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
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
Abstract
The invention discloses a switch structure with bilateral isolation knives for a ring main unit with an integrated online monitoring function, which comprises: the solid-sealed polar pole, the first isolating switch assembly and the second isolating switch assembly; the solid-sealed polar pole comprises a vacuum arc-extinguishing chamber which is a main switch of the ring main unit; the movable end and the static end of the vacuum arc extinguish chamber are respectively communicated with the rotating base of the isolation switch, the top bus side of the solid-sealed polar pole is connected with the first isolation switch assembly, and the bottom outlet side of the solid-sealed polar pole is connected with the second isolation switch assembly. By arranging the disconnecting switches on two sides of the ring main unit breaker respectively, namely adopting a bilateral switch structure of an upper disconnecting switch, a breaker and a lower disconnecting switch, contact accidents caused by misoperation are avoided, the safety performance of the ring main unit is improved, and the safety of a power system is improved.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a switch structure with bilateral isolating knives for a ring main unit, which integrates an online monitoring function.
Background
Partial discharge is easy to occur in high-voltage switch equipment due to aging of the insulating part. The phenomenon is long-term, slow and not easy to detect, but the damage to the insulation performance of the switch device is serious. The existing ring main unit switch is generally only provided with a single-side isolating switch, and safety accidents are easy to happen due to improper operation in a specific using process, so that the safety of a power system is reduced.
Disclosure of Invention
The invention aims to provide a switch structure with double-sided disconnecting switches for a ring main unit with an integrated online monitoring function.
In order to solve the above technical problem, an embodiment of the present invention provides a switch structure with a bilateral disconnecting link for a ring main unit, which integrates an online monitoring function, and includes: the solid-sealed pole comprises a solid-sealed pole, a first isolating switch assembly and a second isolating switch assembly;
the solid-sealed polar pole comprises a vacuum arc-extinguishing chamber which is a main switch of the ring main unit;
the movable end and the static end of the vacuum arc extinguish chamber are respectively communicated with the rotating base of the isolation switch, the top bus side of the solid-sealed polar pole is connected with the first isolation switch assembly, and the bottom outlet side of the solid-sealed polar pole is connected with the second isolation switch assembly.
Further, the looped netowrk cabinet of integrated on-line monitoring function still includes with taking two side isolation knife switch structures: a temperature measuring component;
the temperature measurement component comprises: a first temperature sensor, a second temperature sensor, a third temperature sensor and/or a fourth temperature sensor;
the first temperature sensor is arranged at an isolation knife rotary connecting conductor of the first isolation switch assembly;
the second temperature sensor is arranged at the rotary connecting conductor of the isolating knife of the first isolating switch assembly;
the third temperature sensor is arranged at the root position of the copper column of the upper wire inlet sleeve;
the fourth temperature sensor is arranged at the root position of the copper column of the lower wire inlet sleeve;
the control module of the ring main unit is respectively connected with the first temperature sensor, the second temperature sensor, the third temperature sensor and/or the fourth temperature sensor to acquire temperature data of corresponding positions.
Furthermore, an isolation knife closing static contact of the first isolation switch assembly is connected with a first rotating base, and the first rotating base is provided with a first groove matched with the first temperature sensor;
the first temperature sensor is arranged in the first groove.
Furthermore, an isolation moving contact of the second isolation switch component is connected with a second rotating base, and the second rotating base is provided with a second groove corresponding to the second temperature sensor;
the second temperature sensor is arranged in the second groove. Further, the first temperature sensor, the second temperature sensor, the third temperature sensor and/or the fourth temperature sensor are connected with the ring main unit control module in a wireless mode respectively.
Further, an isolation contact of the first isolation switch assembly and the upper wiring sleeve copper column are integrally formed;
and the isolation contact of the second isolation switch assembly and the lower wire inlet sleeve copper cylinder are integrally formed.
Furthermore, angular displacement sensors are arranged on the side faces of the disconnecting switches of the first isolating switch assembly and the second isolating switch assembly;
the angular displacement sensor acquires knife switch motion data and sends the knife switch motion data to the ring main unit control module.
Further, the looped netowrk cabinet of integrated on-line monitoring function still includes with taking two side isolation knife switch structures: an ultrasonic partial discharge detection assembly;
the ultrasonic partial discharge detection assembly is arranged at the bottom of the ring main unit gas box;
the ultrasonic partial discharge detection assembly is connected with the ring main unit control module, and sends an early warning signal to the ring main unit control module when a partial discharge detection value exceeds a preset value.
The technical scheme of the embodiment of the invention has the following beneficial technical effects:
by arranging the disconnecting switches on two sides of the ring main unit breaker respectively, namely adopting a bilateral switch structure of an upper disconnecting switch, a breaker and a lower disconnecting switch, contact accidents caused by misoperation are avoided, the safety performance of the ring main unit is improved, and the safety of a power system is improved.
Drawings
Fig. 1 is a schematic diagram of a switch structure with a double-sided disconnecting link for a ring main unit with an integrated online monitoring function according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a switch with a double-sided disconnecting link for a ring main unit with an integrated online monitoring function according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a first groove position provided by an embodiment of the present invention;
fig. 4 is a schematic diagram of a second groove position provided in the embodiment of the present invention. Reference numerals:
1. the device comprises a vacuum arc extinguish chamber, 2, a temperature measuring component, 3, an angular displacement sensor, 4, an ultrasonic partial discharge detection component, 5, a first isolating switch component isolating knife, 6, a second isolating switch component isolating knife, 7, a bus side isolating static contact, 8, an outgoing line side isolating contact, 9, a first groove, 10, a second groove, 11 and an upper incoming line bushing copper column.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Referring to fig. 1 and fig. 2, an embodiment of the present invention provides a switch structure with two-sided disconnecting link for a ring main unit with an integrated online monitoring function, including: the solid-sealed polar pole, the first isolating switch assembly and the second isolating switch assembly; the solid-sealed polar pole comprises a vacuum arc extinguish chamber 1 which is a main switch of the ring main unit; the movable end and the static end of the vacuum arc extinguish chamber 1 are respectively communicated with a rotating base of the isolation switch, the top bus side of the solid-sealed polar pole is connected with the first isolation switch assembly, and the bottom outlet side of the solid-sealed polar pole is connected with the second isolation switch assembly.
The ring main unit of integrated on-line monitoring function adopts embedded vacuum interrupter 1's solid utmost point post that seals as main switch with two side isolation knife switch structure, and the explosion chamber moves end and quiet end both sides and communicates with the rotating base who keeps apart the switch respectively, at utmost point post upper end generating line side installation a set of isolation switch, simultaneously in utmost point post lower extreme outgoing line side, installs the isolation switch of second group. The 2 sets of isolation knife switches and the middle vacuum arc extinguish chamber 1 switch form an upper isolation-circuit breaker-lower isolation double-side isolation switch structure.
According to the switch structure with the bilateral disconnecting link for the ring main unit with the integrated online monitoring function, the disconnecting switches are arranged on the two sides of the ring main unit circuit breaker respectively, namely the bilateral switch structure of the upper disconnecting switch, the circuit breaker and the lower disconnecting switch is adopted, so that contact accidents caused by misoperation are avoided, the safety performance of the ring main unit is improved, and the safety of an electric power system is improved.
Further, integrated on-line monitoring function's looped netowrk cabinet still includes with taking two side isolation knife switch structures: a temperature measuring component 2; the temperature measuring component 2 comprises: a first temperature sensor, a second temperature sensor, a third temperature sensor and/or a fourth temperature sensor; the first temperature sensor is arranged at the rotary connecting conductor of the isolating knife of the first isolating switch component; the second temperature sensor is arranged at the rotary connecting conductor of the isolating knife of the first isolating switch assembly; the third temperature sensor is arranged at the root position of the upper wire casing copper column 11; the fourth temperature sensor is arranged at the root position of the copper column of the lower wire inlet sleeve; the control module of the ring main unit is respectively connected with the first temperature sensor, the second temperature sensor, the third temperature sensor and/or the fourth temperature sensor to acquire temperature data of corresponding positions.
Optionally, referring to fig. 3, an isolation knife closing static contact of the first isolation switch assembly is connected to the first rotating base, and the first rotating base is provided with a first groove 9 matched with the first temperature sensor; the first temperature sensor is arranged in the first recess 9.
Optionally, the temperature sensors (including the first temperature sensor, the second temperature sensor, the third temperature sensor and/or the fourth temperature sensor) adopt a watchband type temperature sensor, perform data interaction with a control module of the ring main unit in a wireless manner, and transmit the detected internal temperature of the preset position, so that a temperature detection error caused by only detecting the surface temperature in the prior art is avoided, the precision of temperature detection is improved, and the accuracy and the safety of monitoring of the ring main unit are improved.
Optionally, referring to fig. 4, the isolation moving contact of the second isolation switch component is connected to a second rotating base, and the second rotating base is provided with a second groove 10 corresponding to the second temperature sensor; the second temperature sensor is disposed in the second recess 10.
Keep apart moving contact rotating base and be equipped with near the rotation point position can with watchband formula temperature sensor complex second recess, with wireless temperature sensor pre-installation in advance on second rotating base be used for monitoring the temperature of keeping apart moving contact revolute pair position, improved the detection precision in temperature detection area, make temperature sensor more accurately detect the regional temperature of generating heat the biggest, the temperature is the highest.
In the existing primary loop, the discontinuous connection point of the conductor is an area with concentrated heat, and is usually at the connection point of the isolation knife revolute pair and the connection point of the bus side isolation static contact 7 and the outgoing line side isolation contact 8. For a boxed switchgear, a temperature test can only place a test point on the section of an inlet and outlet bushing, and cannot accurately measure the area with the maximum heat generation amount. Design groove structure on the conductor that is closer apart from the break point ratio, with watchband formula wireless temperature sensor 2 preinstallation on the copper conductor, send the real-time temperature signal of tie point to instrument room receiving arrangement through radio signal, can realize the inside temperature rise condition of real-time detection switch, gather equipment backstage with a large amount of data, managers can directly perceivedly accurate understanding equipment behavior to judge the site conditions in view of the above.
Further, an isolation contact of the first isolation switch assembly and the copper column of the upper wiring sleeve 11 are integrally formed; and the isolation contact of the second isolation switch component and the lower wire inlet sleeve copper column are integrally formed.
Furthermore, angular displacement sensors 3 are arranged on the side faces of the disconnecting switches of the first isolating switch assembly and the second isolating switch assembly; the angular displacement sensor 3 acquires the movement data of the disconnecting link and sends the movement data to the ring main unit control module.
An angular displacement sensor 3 is arranged on the side face of the disconnecting link, the disconnecting link motion data is collected, signals are transmitted to an external receiving device, and the characteristic of the switch motion speed can be displayed. Through the change trend of a large number of data curves, whether serious abrasion occurs or the situation of input closing work attenuation and the like can be conveniently judged.
Further, integrated on-line monitoring function's looped netowrk cabinet still includes with taking bilateral isolator switch structure: an ultrasonic partial discharge detection component 4; the ultrasonic partial discharge detection assembly 4 is arranged at the bottom of the ring main unit gas box; the ultrasonic partial discharge detection assembly 4 is connected with the ring main unit control module, and sends an early warning signal to the ring main unit control module when a partial discharge detection value exceeds a preset value.
Partial discharge is easy to occur in high-voltage switch equipment due to aging of the insulating part. The phenomenon is long-term, slow and not easy to detect, but the damage to the insulation performance of the switch device is serious. In the design, an ultrasonic detection technology is utilized, a partial discharge monitoring device is designed under a gas box of a switch chamber, and the partial discharge condition of the device is monitored in the whole life cycle. In the equipment manufacturing process, if the partial discharge value exceeds the standard, the device can send out early warning to a manufacturing management system, so that the quality part is ensured to intervene in advance, and timely processing is found out. During the operation of hanging the net, operation and maintenance personnel can find problems at the first time through the design, and the stability and safety of the power supply network are ensured.
The embodiment of the invention aims to protect a switch structure with double-sided isolation knives for a ring main unit with an integrated online monitoring function, which comprises the following steps: the solid-sealed polar pole, the first isolating switch assembly and the second isolating switch assembly; the solid-sealed polar pole comprises a vacuum arc-extinguishing chamber which is a main switch of the ring main unit; the movable end and the static end of the vacuum arc extinguish chamber are respectively communicated with the rotating base of the isolation switch, the top bus side of the solid-sealed polar pole is connected with the first isolation switch assembly, and the bottom outlet side of the solid-sealed polar pole is connected with the second isolation switch assembly. The technical scheme has the following effects:
by arranging the disconnecting switches on two sides of the ring main unit breaker respectively, namely adopting a bilateral switch structure of an upper disconnecting switch, a breaker and a lower disconnecting switch, contact accidents caused by misoperation are avoided, the safety performance of the ring main unit is improved, and the safety of a power system is improved.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundary of the appended claims, or the equivalents of such scope and boundary.
Claims (8)
1. The utility model provides an integrated online monitoring function's looped netowrk cabinet is with taking two side isolation sword switch structures which characterized in that includes: the solid-sealed polar pole, the first isolating switch assembly and the second isolating switch assembly;
the solid-sealed polar pole comprises a vacuum arc-extinguishing chamber which is a main switch of the ring main unit;
the movable end and the static end of the vacuum arc extinguish chamber are respectively communicated with the rotating base of the isolation switch, the top bus side of the solid-sealed polar pole is connected with the first isolation switch assembly, and the bottom outlet side of the solid-sealed polar pole is connected with the second isolation switch assembly.
2. The ring main unit with double-sided disconnecting link switch structure with integrated online monitoring function according to claim 1, further comprising: a temperature measuring component;
the temperature measurement component comprises: a first temperature sensor, a second temperature sensor, a third temperature sensor and/or a fourth temperature sensor;
the first temperature sensor is arranged at an isolation knife rotary connecting conductor of the first isolation switch assembly;
the second temperature sensor is arranged at the rotary connecting conductor of the isolating knife of the first isolating switch assembly;
the third temperature sensor is arranged at the root position of the copper column of the upper wire inlet sleeve;
the fourth temperature sensor is arranged at the root position of the copper column of the lower wire inlet sleeve;
the control module of the ring main unit is respectively connected with the first temperature sensor, the second temperature sensor, the third temperature sensor and/or the fourth temperature sensor to acquire temperature data of corresponding positions.
3. The ring main unit with double-sided disconnecting link switch structure integrated with on-line monitoring function according to claim 2,
an isolation knife closing static contact of the first isolation switch assembly is connected with a first rotating base, and the first rotating base is provided with a first groove matched with the first temperature sensor;
the first temperature sensor is arranged in the first groove.
4. The ring main unit with double-sided disconnecting link switch structure integrated with on-line monitoring function according to claim 2,
the isolating moving contact of the second isolating switch component is connected with a second rotating base, and the second rotating base is provided with a second groove corresponding to the second temperature sensor;
the second temperature sensor is arranged in the second groove.
5. The ring main unit with double-sided disconnecting link switch structure integrated with on-line monitoring function according to claim 2,
the first temperature sensor, the second temperature sensor, the third temperature sensor and/or the fourth temperature sensor are/is respectively connected with the switch structure control module with the double-sided isolation knife for the ring main unit integrated with the online monitoring function in a wireless mode.
6. The ring main unit with the integrated on-line monitoring function according to any one of claims 1 to 5, wherein the switch structure with the double-sided isolating knife is characterized in that,
the isolation contact of the first isolation switch assembly and the copper column of the upper wiring sleeve are integrally formed;
and the isolation contact of the second isolation switch assembly and the lower wire inlet sleeve copper cylinder are integrally formed.
7. The ring main unit with the integrated on-line monitoring function according to any one of claims 1 to 5, wherein the switch structure with the double-sided isolating knife is characterized in that,
angular displacement sensors are arranged on the side faces of the disconnecting switches of the first isolating switch assembly and the second isolating switch assembly;
the angular displacement sensor acquires knife switch motion data and sends the knife switch motion data to the ring main unit control module.
8. A ring main unit with bilateral disconnecting link switch structure with integrated on-line monitoring function according to any one of claims 1 to 5, further comprising: an ultrasonic partial discharge detection assembly;
the ultrasonic partial discharge detection assembly is arranged at the bottom of the ring main unit gas box;
the ultrasonic partial discharge detection assembly is connected with the ring main unit control module, and sends an early warning signal to the ring main unit control module when a partial discharge detection value exceeds a preset value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210260823.2A CN114552477A (en) | 2022-03-16 | 2022-03-16 | Ring main unit switch structure with bilateral isolation knife for integrated online monitoring function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210260823.2A CN114552477A (en) | 2022-03-16 | 2022-03-16 | Ring main unit switch structure with bilateral isolation knife for integrated online monitoring function |
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| Publication Number | Publication Date |
|---|---|
| CN114552477A true CN114552477A (en) | 2022-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210260823.2A Pending CN114552477A (en) | 2022-03-16 | 2022-03-16 | Ring main unit switch structure with bilateral isolation knife for integrated online monitoring function |
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| CN (1) | CN114552477A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104410002A (en) * | 2014-12-05 | 2015-03-11 | 北京合锐赛尔电力科技股份有限公司 | Intelligent solid insulating ring main unit |
| CN107887807A (en) * | 2017-12-22 | 2018-04-06 | 上海攀森电气设备有限公司 | A kind of disconnecting link formula three-station protected type solid insulation ring main unit |
| CN109193399A (en) * | 2018-10-15 | 2019-01-11 | 武胜县烈面镇小学 | A kind of isolator |
| CN211377246U (en) * | 2020-03-04 | 2020-08-28 | 四川瑞霆电力科技有限公司 | High tension switchgear and cubical switchboard integrated state monitoring system |
-
2022
- 2022-03-16 CN CN202210260823.2A patent/CN114552477A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104410002A (en) * | 2014-12-05 | 2015-03-11 | 北京合锐赛尔电力科技股份有限公司 | Intelligent solid insulating ring main unit |
| CN107887807A (en) * | 2017-12-22 | 2018-04-06 | 上海攀森电气设备有限公司 | A kind of disconnecting link formula three-station protected type solid insulation ring main unit |
| CN109193399A (en) * | 2018-10-15 | 2019-01-11 | 武胜县烈面镇小学 | A kind of isolator |
| CN211377246U (en) * | 2020-03-04 | 2020-08-28 | 四川瑞霆电力科技有限公司 | High tension switchgear and cubical switchboard integrated state monitoring system |
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Application publication date: 20220527 |