CN112490854A - 40.5kV T-connection switch combined electrical apparatus - Google Patents
40.5kV T-connection switch combined electrical apparatus Download PDFInfo
- Publication number
- CN112490854A CN112490854A CN202011377703.8A CN202011377703A CN112490854A CN 112490854 A CN112490854 A CN 112490854A CN 202011377703 A CN202011377703 A CN 202011377703A CN 112490854 A CN112490854 A CN 112490854A
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- China
- Prior art keywords
- switch
- current transformer
- circuit breaker
- combined electrical
- operating mechanism
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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
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
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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
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/015—Boards, panels, desks; Parts thereof or accessories therefor
- H02B1/04—Mounting thereon of switches or of other devices in general, the switch or device having, or being without, casing
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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
Abstract
The invention relates to a 40.5kV T-connection switch combined electrical appliance, which is arranged at a T-connection point of a 40.5kV main line and is connected with a main cable; the method is characterized in that: the intelligent outdoor remote network control system comprises a 40.5kV circuit breaker, a current transformer, an isolating switch, a voltage transformer, a controller, an operating mechanism, an outdoor remote network camera and an electric pole; the insulating property of the invention completely meets the working condition of 40.5 kV; the mounting position can be flexibly selected according to the terrain or the terrain of the T-junction, and the mounting is carried out on the ground or on the column; the kit may employ a wireless communication network; the remote control system has the functions of remote signaling, remote measuring and remote control; the combined electrical apparatus possesses the remote vision function simultaneously, through outdoor long-range network camera, and the specific state of combined electrical apparatus is looked over in long-range, provides visual reference to the maintenance or the maintenance of combined electrical apparatus.
Description
Technical Field
The invention relates to the technical field of combined electrical appliances, in particular to a 40.5kV T-connection switch combined electrical appliance.
Background
In order to encourage the development of renewable energy, small hydropower stations are built on two sides of a 40.5kV line, the hydropower stations are generally built at the mountains or at higher positions, most of the lower part of the line between a main line and the small hydropower stations grows tall trees or bamboos, owners of the small hydropower stations do not repair and maintain all the year round, branch faults are caused frequently in the plum rain season, and therefore the problem that the main line is tripped and powered off is caused. Therefore, in order to avoid the problem that the main line trip is influenced by the fault of the small hydropower station branch, a group of fault cutting and isolating devices are required to be installed at the T-connection position.
The common scheme is an on-pole circuit breaker scheme, namely a current transformer, an isolating switch, a voltage transformer and the like are integrated together, the structure of the on-pole circuit breaker is basically consistent with that of a ZW32-24 on-pole circuit breaker used on a distribution network overhead line, most manufacturers adopt a 24kV heightening scheme or a composite bushing scheme, and the insulation performance is improved but the requirement of 40.5kV working condition cannot be met.
The following disadvantages exist with the common solutions:
1) the product is installed on a T-junction line iron tower, and is inconvenient to install and hoist;
2) the performance of a circuit breaker in a combined electrical appliance product cannot meet the working condition of 40.5kV, particularly the insulation level;
3) the product does not have the remote vision function and cannot judge the on-off condition of the combined electrical appliance.
Disclosure of Invention
The invention aims to solve the technical problem of providing a 40.5kV T-connection switch combined electrical appliance, which can solve the problem of 40.5kV main line power failure caused by 40.5kV T-connection circuit failure; the fault processing efficiency is improved, and the power supply reliability is improved.
In order to solve the technical problems, the technical scheme of the invention is as follows: a40.5 kV T-connection switch combined electrical appliance is arranged at a T-connection point of a 40.5kV main line and is connected with a main cable; the innovation points are as follows: the intelligent outdoor remote network control system comprises a 40.5kV circuit breaker, a current transformer, an isolating switch, a voltage transformer, a controller, an operating mechanism, an outdoor remote network camera and an electric pole;
the electric pole is vertically arranged on the ground, and the electric pole is surrounded into a frame structure with a rectangular section; a first bracket, a second bracket and a third bracket are sequentially arranged between the electric poles from bottom to top; the first support, the second support and the third support are parallel to each other and are all perpendicular to the electric pole and connected to the electric pole;
the 40.5kV circuit breaker and the current transformer are both arranged on the first bracket; the primary part of the current transformer is connected with a lower wiring board of a 40.5kV circuit breaker through a conductor and a bolt; the isolating switches are provided with a plurality of groups and are arranged on the second bracket in parallel; the voltage transformer is arranged on the third bracket; the operating mechanism is arranged on the electric pole and is connected with the isolating switch through a transmission rod to drive the isolating switch to be switched on and off; the input end of the isolating switch is connected with the main cable, the output end of the isolating switch is connected with the input end of the 40.5kV circuit breaker, the output end of the 40.5kV circuit breaker is connected with the input end of the current transformer, and the output end of the current transformer is connected with the main cable; a branch cable arranged on the voltage transformer is connected with a main cable;
the controller is connected with the current transformer and monitors and protects the T-connection circuit by acquiring current signals of the current transformer;
outdoor long-range network camera passes through body pole setting shaft-like in pole one side, outdoor long-range network camera realizes long-range specific state of looking over the combination electrical apparatus, provides visual reference to the maintenance of T wiring circuit.
Further, be provided with a arrester on the pole, the arrester protects 40.5 kV's T connects switch combined electrical apparatus through connecting wire ground connection back, avoids 40.5 kV's T to connect switch combined electrical apparatus to suffer the thunderbolt and damage in thunderstorm weather.
Furthermore, a plurality of post insulators are vertically arranged on the side edge of the third support, and the end portions of the post insulators are used for fixing cables for connecting the main cable and the isolating switch and fixing cables for connecting the main cable and the current transformer.
Further, the 40.5kV circuit breaker comprises a phase column, a cross beam and an operating mechanism; the bottom end of the phase column is arranged on the upper surface of the cross beam; the operating mechanism is hoisted on the lower surface of the cross beam through a bolt; a transmission connecting rod is arranged in the beam and used for mechanical linkage between the operating mechanism and the phase column, so that the opening and closing function of the 40.5kV circuit breaker is realized; the lower surfaces of the two ends of the cross beam are connected to the first support through support columns.
Furthermore, the isolating switch comprises an upper conducting rod, a rotating post insulator, a base and an operating tube; the isolating switch is vertically arranged between the two electric poles through a bolt and a second bracket, the upper electric conductor is fastened with the rotary post insulator through the bolt, the rotary post insulator is fastened with the base through a bearing seat and the bolt, the rotary post insulator can rotate on the base, and the base is provided with a transmission connecting lever; the upper end of the operating tube is connected with a transmission crank arm on the base, the lower end of the operating tube is connected with the operating mechanism, and the operating tube is driven to rotate by a clamping piece on the upper end of the operating mechanism, so that the rotary pillar insulator is driven to rotate, and the opening and closing operation of the isolating switch is realized.
Furthermore, the current transformer adopts an external single-phase transformer and is cast by epoxy resin.
Further, the 40.5kV voltage transformer converts the voltage on the 40.5kV line into AC220V and transmits the AC220 to the controller for power supply, and the controller operates normally.
The invention has the advantages that:
1) the insulating property of the invention completely meets the working condition of 40.5 kV; the mounting position can be flexibly selected according to the terrain or the terrain of the T-junction, and the mounting is carried out on the ground or on the column; the kit may employ a wireless communication network; the remote control system has the functions of remote signaling, remote measuring and remote control; the combined electrical apparatus possesses the remote vision function simultaneously, through outdoor long-range network camera, and the specific state of combined electrical apparatus is looked over in long-range, provides visual reference to the maintenance or the maintenance of combined electrical apparatus.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a main view structural diagram of a 40.5kV T-connection switch combined electrical appliance.
Fig. 2 is a side view structural diagram of a 40.5kV T-junction switch combined electrical apparatus of the invention.
Fig. 3 is a structure diagram of a 40.5kV circuit breaker of a 40.5kV T-junction switch combined electrical apparatus of the invention.
Fig. 4 is a diagram of the isolator structure of a 40.5kV T-junction switch combiner of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A 40.5kV T-junction switch combiner as shown in fig. 1 to 4, which is installed at a T-junction of a 40.5kV trunk line and is connected with a main cable; the intelligent outdoor remote control system comprises a 40.5kV circuit breaker 1, a current transformer 2, an isolating switch 3, a voltage transformer 4, a controller 5, an operating mechanism 6, an outdoor remote network camera 7 and an electric pole 8.
The electric pole 8 is vertically arranged on the ground, and the electric pole 8 is surrounded into a frame structure with a rectangular section; a first bracket 81, a second bracket 82 and a third bracket 83 are sequentially arranged between the electric poles 8 from bottom to top; the first bracket 81, the second bracket 82 and the third bracket 83 are parallel to each other and are all connected to the pole 8 perpendicular to the pole 8.
The 40.5kV circuit breaker 1 and the current transformer 2 are both arranged on the first bracket 81; the primary part of the current transformer 81 is connected with a lower wiring board of the 40.5kV circuit breaker 1 through a conductor and a bolt; the isolating switches 3 are provided with a plurality of groups and are arranged on the second bracket 82 in parallel; the voltage transformer 4 is arranged on the third bracket 83; the operating mechanism 6 is arranged on the electric pole 8, and the operating mechanism 6 is connected with the isolating switch 3 through a transmission rod to realize the on-off driving of the isolating switch 3; the input end of the isolating switch 3 is connected with the main cable, the output end of the isolating switch 3 is connected with the input end of the 40.5kV circuit breaker 1, the output end of the 40.5kV circuit breaker 1 is connected with the input end of the current transformer 2, and the output end of the current transformer 2 is connected with the main cable; and a branch cable arranged on the voltage transformer 4 is connected with the main cable.
The controller 5 is communicated with the current transformer 2 to acquire a current signal of the current transformer 2 so as to monitor and protect the T-connection circuit.
Outdoor long-range network camera 7 is in pole one side through body pole setting shaft-like, and outdoor long-range network camera 7 realizes long-range specific state of looking over the combination electrical apparatus, provides visual reference to the maintenance of T wiring circuit.
The pole 8 is provided with a lightning arrester 9, and the lightning arrester 9 protects the 40.5kV T-connection switch combined electrical apparatus after being grounded through a connecting wire, so that the 40.5kV T-connection switch combined electrical apparatus is prevented from being damaged by lightning stroke in thunderstorm weather.
A plurality of post insulators 831 are vertically arranged on the side edge of the third support 83, and the end portions of the post insulators 831 fix cables connecting the main cable and the isolating switch 3 and fix cables connecting the main cable and the current transformer.
The 40.5kV circuit breaker 1 comprises a phase column 11, a beam 12 and an operating mechanism 13; the bottom end of the phase column 11 is arranged on the upper surface of the cross beam; the operating mechanism 13 is hoisted on the lower surface of the beam 12 through bolts; a transmission connecting rod is arranged in the beam 12 and used for mechanical linkage between the operating mechanism 13 and the phase column to realize the opening and closing function of the 40.5kV circuit breaker 1; the lower surfaces of both ends of the cross member 12 are connected to the first bracket 81 through support columns.
The isolating switch 3 comprises an upper electric conductor 31, a rotary post insulator 32, a base 33 and an operating pipe 34; the isolating switch 3 is vertically arranged between the two electric poles 8 through bolts and a second bracket 82, the upper electric conductor is fastened with the rotary post insulator through the bolts, the rotary post insulator is fastened with the base through a bearing seat and the bolts, the rotary post insulator 32 can rotate on the base, and the base 33 is provided with a transmission connecting lever; the upper end of the operating tube 34 is connected with a transmission crank arm on the base, the lower end of the operating tube is connected with the operating mechanism 6, the operating tube 34 is driven to rotate through a clamping piece at the upper end of the operating mechanism 6, and therefore the rotary post insulator 32 is driven to rotate, and the opening and closing operation of the isolating switch 3 is achieved.
The current transformer 2 adopts an external single-phase transformer, and the current transformer 2 is poured by epoxy resin.
The 40.5kV voltage transformer 1 converts the voltage on the 40.5kV line into AC220V and transmits the AC220 to the controller 5 for power supply, and the controller operates normally.
The working principle of the invention is as follows: the combined electrical apparatus is arranged at a T junction of a 40.5kV main line, and when the combined electrical apparatus is in normal operation, the combined electrical apparatus ensures that electricity generated by a small hydropower station of the T junction line is transmitted to the 40.5kV main line; an operating mechanism in the 40.5kV circuit breaker is connected with the controller through an aerial plug cable; the voltage transformer converts the voltage on the 40.5kV line into AC220V and supplies power to the controller to ensure the normal operation of the controller, a storage battery is arranged in the controller, the controller can still be ensured to continuously work for several hours after the 40.5kV line is powered off, the controller monitors and protects the T-connection line by collecting current signals of the current transformer during normal operation, if a fault occurs on the T-connection line, the controller in the combined electrical appliance sends a switching-off instruction to an operating mechanism in the 40.5kV circuit breaker after detecting the fault current signals, the operating mechanism in the 40.5kV circuit breaker immediately switches off after receiving the switching-off signals, and a phase column arc extinguish chamber in the 40.5kV circuit breaker is disconnected in a mechanical transmission mode, so that the branch fault of the T-connection line is cut off, and the power failure of a 40.5kV main line is avoided.
After the T-connection circuit is powered off, under the switching-off state of a 40.5kV circuit breaker, the disconnecting switch operating mechanism is manually or electrically operated, and the operating mechanism drives the operating pipe to rotate through rotary motion, so that the rotary support insulator is driven to rotate, and the switching-on and switching-off operation of the disconnecting switch is realized; the T-connection circuit can be overhauled and maintained under the switching-off state of the isolating switch; the overhaul and the maintenance are carried out through an outdoor remote network camera, the specific state of the combined electric appliance is remotely checked, and the safety of maintainers is guaranteed.
The lightning arrester is used for lightning protection when the 40.5kV T-connection switch combined electrical apparatus operates normally, and damage of the 40.5kV T-connection switch combined electrical apparatus caused by lightning stroke in thunderstorm weather is avoided.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A40.5 kV T-connection switch combined electrical appliance is arranged at a T-connection point of a 40.5kV main line and is connected with a main cable; the method is characterized in that: the intelligent outdoor remote network control system comprises a 40.5kV circuit breaker, a current transformer, an isolating switch, a voltage transformer, a controller, an operating mechanism, an outdoor remote network camera and an electric pole;
the electric pole is vertically arranged on the ground, and the electric pole is surrounded into a frame structure with a rectangular section; a first bracket, a second bracket and a third bracket are sequentially arranged between the electric poles from bottom to top; the first support, the second support and the third support are parallel to each other and are all perpendicular to the electric pole and connected to the electric pole;
the 40.5kV circuit breaker and the current transformer are both arranged on the first bracket; the primary part of the current transformer is connected with a lower wiring board of a 40.5kV circuit breaker through a conductor and a bolt; the isolating switches are provided with a plurality of groups and are arranged on the second bracket in parallel; the voltage transformer is arranged on the third bracket; the operating mechanism is arranged on the electric pole and is connected with the isolating switch through a transmission rod to drive the isolating switch to be switched on and off; the input end of the isolating switch is connected with the main cable, the output end of the isolating switch is connected with the input end of the 40.5kV circuit breaker, the output end of the 40.5kV circuit breaker is connected with the input end of the current transformer, and the output end of the current transformer is connected with the main cable; a branch cable arranged on the voltage transformer is connected with a main cable;
the controller is connected with the current transformer and monitors and protects the T-connection circuit by acquiring current signals of the current transformer;
outdoor long-range network camera passes through body pole setting shaft-like in pole one side, outdoor long-range network camera realizes long-range specific state of looking over the combination electrical apparatus, provides visual reference to the maintenance of T wiring circuit.
2. A 40.5kV T-junction switch combiner as claimed in claim 1, wherein: be provided with a arrester on the pole, the arrester protects 40.5 kV's T to connect switch combined electrical apparatus after through connecting wire ground connection, avoids 40.5 kV's T to connect switch combined electrical apparatus to suffer thunderbolt and damage in thunderstorm weather.
3. A 40.5kV T-junction switch combiner as claimed in claim 1, wherein: and a plurality of post insulators are vertically arranged on the side edge of the third support, and the end parts of the post insulators are used for fixing cables for connecting the main cable and the isolating switch and fixing cables for connecting the main cable and the current transformer.
4. A 40.5kV T-junction switch combiner as claimed in claim 1, wherein: the 40.5kV circuit breaker comprises a phase column, a cross beam and an operating mechanism; the bottom end of the phase column is arranged on the upper surface of the cross beam; the operating mechanism is hoisted on the lower surface of the cross beam through a bolt; a transmission connecting rod is arranged in the beam and used for mechanical linkage between the operating mechanism and the phase column, so that the opening and closing function of the 40.5kV circuit breaker is realized; the lower surfaces of the two ends of the cross beam are connected to the first support through support columns.
5. A 40.5kV T-junction switch combiner as claimed in claim 1, wherein: the isolating switch comprises an upper electric conduction part, a rotary pillar insulator, a base and an operating tube; the isolating switch is vertically arranged between the two electric poles through a bolt and a second bracket, the upper electric conductor is fastened with the rotary post insulator through the bolt, the rotary post insulator is fastened with the base through a bearing seat and the bolt, the rotary post insulator can rotate on the base, and the base is provided with a transmission connecting lever; the upper end of the operating tube is connected with a transmission crank arm on the base, the lower end of the operating tube is connected with the operating mechanism, and the operating tube is driven to rotate by a clamping piece on the upper end of the operating mechanism, so that the rotary pillar insulator is driven to rotate, and the opening and closing operation of the isolating switch is realized.
6. A 40.5kV T-junction switch combiner as claimed in claim 1, wherein: the current transformer adopts an external single-phase transformer and is cast by epoxy resin.
7. A 40.5kV T-junction switch combiner as claimed in claim 1, wherein: the 40.5kV voltage transformer converts the voltage on the 40.5kV line into AC220V and transmits the AC220 to the controller for power supply, and the controller operates normally.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020110594764 | 2020-09-30 | ||
| CN202011059476 | 2020-09-30 |
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| Publication Number | Publication Date |
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| CN112490854A true CN112490854A (en) | 2021-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011377703.8A Pending CN112490854A (en) | 2020-09-30 | 2020-12-01 | 40.5kV T-connection switch combined electrical apparatus |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201204167Y (en) * | 2008-05-12 | 2009-03-04 | 河南平高电气股份有限公司 | Tripolar mechanical linking type high-voltage circuit-breaker |
| CN202888966U (en) * | 2012-11-08 | 2013-04-17 | 闫祖顺 | Intelligent power grid branch line control equipment |
| CN202888065U (en) * | 2012-04-14 | 2013-04-17 | 鞍山北科电气有限公司 | 40.5KV outdoor high-voltage vacuum circuit breaker |
| CN204966369U (en) * | 2015-09-09 | 2016-01-13 | 山东泰开智能配电有限公司 | Outdoor high voltage isolator of GW1 |
| WO2017132983A1 (en) * | 2016-02-05 | 2017-08-10 | Abb 瑞士股份有限公司 | Transmission and clutch device for electric chassis vehicle, and electric chassis vehicle |
| CN109544805A (en) * | 2018-11-16 | 2019-03-29 | 长沙久信电力科技股份有限公司 | A kind of electric power prepaid installation system |
-
2020
- 2020-12-01 CN CN202011377703.8A patent/CN112490854A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201204167Y (en) * | 2008-05-12 | 2009-03-04 | 河南平高电气股份有限公司 | Tripolar mechanical linking type high-voltage circuit-breaker |
| CN202888065U (en) * | 2012-04-14 | 2013-04-17 | 鞍山北科电气有限公司 | 40.5KV outdoor high-voltage vacuum circuit breaker |
| CN202888966U (en) * | 2012-11-08 | 2013-04-17 | 闫祖顺 | Intelligent power grid branch line control equipment |
| CN204966369U (en) * | 2015-09-09 | 2016-01-13 | 山东泰开智能配电有限公司 | Outdoor high voltage isolator of GW1 |
| WO2017132983A1 (en) * | 2016-02-05 | 2017-08-10 | Abb 瑞士股份有限公司 | Transmission and clutch device for electric chassis vehicle, and electric chassis vehicle |
| CN109544805A (en) * | 2018-11-16 | 2019-03-29 | 长沙久信电力科技股份有限公司 | A kind of electric power prepaid installation system |
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Application publication date: 20210312 |
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