CN201075365Y - User demarcation load switch - Google Patents
User demarcation load switch Download PDFInfo
- Publication number
- CN201075365Y CN201075365Y CNU2007200531256U CN200720053125U CN201075365Y CN 201075365 Y CN201075365 Y CN 201075365Y CN U2007200531256 U CNU2007200531256 U CN U2007200531256U CN 200720053125 U CN200720053125 U CN 200720053125U CN 201075365 Y CN201075365 Y CN 201075365Y
- Authority
- CN
- China
- Prior art keywords
- connecting plate
- copper bar
- phase copper
- switch
- load switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Gas-Insulated Switchgears (AREA)
Abstract
The utility model discloses a user demark load switch that can automatically separate the trouble in user side and prevent the trouble in user side from influencing the distribution network. The utility model comprises a switch body (1), a measurement and control unit (2), and a connector (3); the connector (3) comprises a plug, a socket and a cable; the switch body (1) is electrically connected with the measurement and control unit (2) through the connector (3) and comprises a separating switch (11), a vacuum load switch (12), a zero sequence mutual inductor (13), a measurement and control voltage mutual inductor (14) and a measurement and control current mutual inductor (15,16); the measurement and control unit (2) comprises an AC sampling module (21), a control output module (22), an operation panel (23), a communication interface (24) and a CPU (25). The utility model is applicable to the distribution circuit of urban 10KV overhead power network, and the products of the utility model can be widely arranged in the T connection points of user branches.
Description
Technical field
The utility model relates to switchgear assembly on a kind of intelligent post, is exactly a kind of user demarcation load switch that can excise line single phase grounding failure automatically and isolate phase fault specifically.
Background technology
Power distribution automation be unable to do without the distribution structure of automation and the equipment that cut-offs that adapts with it, and require to cut-off the ability that equipment has remote signalling, remote measurement, remote control, remote regulating, and the advanced equipment that cut-offs had both been considered the requirement of electrical network from the switching devices on the whole of operation control, considered cooperatively interacting between switch and other electric elements again, representing the developing direction of switchgear, also meeting the advanced achievement of distribution system and promote and the target aim of using.In China; along with the city net; deepening constantly of the upgrading of rural power grids; reliability and fail safe in the power supply in service of power distribution network improve constantly; backbone breaks down and the possibility of accident reduces greatly; at this time the branch line accident causes the ratio of backbone power failure constantly to raise; the branch line fault more and more becomes the principal element that influences the distribution safe operation; because of involving the accident that the whole piece feeder line has a power failure, sole user's fault and protection mismate happen occasionally; the simple power supply that relies on the substation grounding line selection apparatus to be difficult in and to excise faulty line and recover the fault-free section in the short time when branch line breaks down; and the time-delay that multi-stage protection increased of circuit can worsen the running environment of electrical network, and this has just proposed challenge to the power supply reliability and the good service of present pursuit.Along with Chinese national economy continues, health, fast-developing, people's living standard improves year by year, and is also more and more higher to the requirement of power supply reliability, and uninterrupted power supply had become the normal need in the modern society in 24 hours.In the daily life, the phenomenon that feeds through to the 10kV distribution network owing to the accident (mainly being ground fault) of a certain user side happens occasionally, then cause road power failure completely, use other user of same circuit also to have to have a power failure, thereby cause bigger social influence.At present, the switchgear of each 10kV distribution line user entry place, city operation of China, under of low grade, do not possess non-maintaining and automatic function, though automatic function is arranged, but must cooperate by main website, do not reach the purpose of automatic establishment user demarcation responsibility point and automatic isolated fault, can't solve the new problem that aforesaid power distribution network faces.
In sum, exist the local accident of supply network user side can cause the defective of large-area power-cuts in the network in the prior art at present.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, and a kind of user demarcation load switch of automatic user-isolated end fault is provided.
The technical scheme that the utility model adopted is: the utility model comprises Switch main body, measurement and control unit, connect plug connector, described connection plug connector comprises plug, socket and cable, described Switch main body connects by the described plug connector that is connected with described measurement and control unit, described Switch main body comprises isolating switch, vacuum load switch, zero-sequence transformer, the observing and controlling voltage transformer, the observing and controlling current transformer, the input of described isolating switch is connected with the service-wire mains side, the output of described isolating switch connects the input of described zero-sequence transformer, the output of described zero-sequence transformer connects the input of described vacuum load switch, the output of described vacuum load switch is connected with the input of customer charge side supply and distribution network, described observing and controlling voltage transformer is connected in parallel between the two-phase of service-wire power supply, described observing and controlling current transformer is the punching instrument transformer, and go up mutually on the both sides that described observing and controlling current transformer is applied in described vacuum load switch output.
Described zero-sequence transformer comprises base, mounting panel, iron core, winding, casting epoxy body, A phase copper bar and connecting plate, B phase copper bar and connecting plate, C phase copper bar and connecting plate, described iron core is " mouth " font or " O " font, form by high-magnetodensity silicon steel plate packing or coiling, described winding technique is on described iron core, described A phase copper bar and connecting plate, B phase copper bar and connecting plate, the copper bar of C phase copper bar and connecting plate interts in the window of described iron core, described A phase copper bar and connecting plate, B phase copper bar and connecting plate, the connecting plate device of C phase copper bar and connecting plate is in described iron core both sides, described base, mounting panel, iron core, winding, A phase copper bar and connecting plate, B phase copper bar and connecting plate, C phase copper bar and connecting plate are integral according to die casting by technology by epoxy resin, described iron core, winding, A phase copper bar and connecting plate, B phase copper bar and connecting plate, C phase copper bar and connecting plate be mutually insulated each other.
Described measurement and control unit comprises AC sampling module, control output module, guidance panel, communication interface and CPU, and described CPU is electrically connected with described AC sampling module, control output module, guidance panel, communication interface.
The beneficial effects of the utility model are: because the utility model comprises Switch main body, measurement and control unit, connect plug connector, described connection plug connector comprises plug, socket and cable, described Switch main body connects by the described plug connector that is connected with described measurement and control unit, described Switch main body comprises isolating switch, vacuum load switch, zero-sequence transformer, the observing and controlling voltage transformer, the observing and controlling current transformer, the input of described isolating switch is connected with the service-wire mains side, the output of described isolating switch connects the input of described zero-sequence transformer, the output of described zero-sequence transformer connects the input of described vacuum load switch, the output of described vacuum load switch is connected with the input of customer charge side supply and distribution network, described observing and controlling voltage transformer is connected in parallel between the two-phase of service-wire power supply, described observing and controlling current transformer is the punching instrument transformer, and go up mutually on the both sides that described observing and controlling current transformer is applied in described vacuum load switch output; Described measurement and control unit comprises AC sampling module, control output module, guidance panel, communication interface and CPU, described CPU is electrically connected with described AC sampling module, control output module, guidance panel, communication interface, so the present invention has the function of automatic user-isolated end fault.
Description of drawings
Fig. 1 is the utility model circuit structure block diagram;
Fig. 2 is the utility model zero-sequence transformer structural representation.
Embodiment
As Fig. 1, shown in Figure 2, the present invention includes Switch main body 1, measurement and control unit 2, connect plug connector 3, described connection plug connector 3 comprises plug, socket and cable, described Switch main body 1 is electrically connected by the described plug connector 3 that is connected with described measurement and control unit 2, described Switch main body 1 comprises isolating switch 11, vacuum load switch 12, zero-sequence transformer 13, observing and controlling voltage transformer 14, observing and controlling current transformer 15,16, the input of described isolating switch 11 is connected with the service-wire mains side, the output of described isolating switch 11 connects the input of described zero-sequence transformer 13, the output of described zero-sequence transformer 13 connects the input of described vacuum load switch 12, the output of described vacuum load switch 12 is connected with the input of customer charge side supply and distribution network, described observing and controlling voltage transformer 14 is connected in parallel between the two-phase of service-wire power supply, described observing and controlling current transformer 15, the 16th, punching instrument transformer, described observing and controlling current transformer 15,16 devices are gone up mutually on the both sides of described vacuum load switch 12 outputs.
Described zero-sequence transformer 13 comprises base 131, mounting panel 132, iron core 133, winding 134, casting epoxy body 135, A phase copper bar and connecting plate 136, B phase copper bar and connecting plate 137, C phase copper bar and connecting plate 138, described iron core 133 is " mouth " font or " O " font, form by high-magnetodensity silicon steel plate packing or coiling, described winding 134 is wound on the described iron core 133, described A phase copper bar and connecting plate 136, B phase copper bar and connecting plate 137, the copper bar of C phase copper bar and connecting plate 138 interts in the window of described iron core 133, described A phase copper bar and connecting plate 136, B phase copper bar and connecting plate 137, the connecting plate device of C phase copper bar and connecting plate 138 is in described iron core 133 both sides, described base 131, mounting panel 132, iron core 133, winding 134, A phase copper bar and connecting plate 136, B phase copper bar and connecting plate 137, C phase copper bar and connecting plate 138 are integral described iron core 133 by epoxy resin according to die casting by technology, winding 134, A phase copper bar and connecting plate 136, B phase copper bar and connecting plate 137, C phase copper bar and connecting plate 138 be mutually insulated each other.
Described measurement and control unit 2 comprises AC sampling module 21, control output module 22, guidance panel 23, communication interface 24 and CPU 25, and described CPU 25 is electrically connected with described AC sampling module 21, control output module 22, guidance panel 23, communication interface 24.
Described zero-sequence transformer base 131 and mounting panel 132 can be whole a pressure with the iron plate blunderbuss and form, described winding 134 can be prefabricated into the coil device of surface insulation on described iron core 133, the available moulds of industrial equipment of whole assembling are fixed above-mentioned each parts by the designing requirement relative position, be placed in the outer casing mold then and cast.
User demarcation load switch of the present invention is the brand-new outdoor primary line way switch equipment of a kind of function.Load switch body adopts vacuum load switch, SF6 gas-insulated.Vacuum tube series connection interlock isolation switch, disconnecting link closes a floodgate prior to vacuum tube, and the back is in the vacuum tube separating brake.The common CT of the built-in two-phase of Switch main body (A, C phase), 1 zero sequence CT, 1 alternate PT and three-phase voltage transducer.The controller outward appearance adopts the form of present RTU, hardware mainly is provided with panel and is formed by CPU board, power supply and switch control board, parameter, it is mainly used between the responsibility separation of 10KV overhead distribution and user's branch line, prevent that the user side accident from feeding through to the power distribution circuit, cause the accident of large-area power-cuts in the electric power networks, thereby guarantee the power supply reliability of distribution network.
Claims (3)
1. user demarcation load switch, it comprises Switch main body (1), measurement and control unit (2), connect plug connector (3), described connection plug connector (3) comprises plug, socket and cable, described Switch main body (1) is electrically connected by the described plug connector (3) that is connected with described measurement and control unit (2), it is characterized in that: described Switch main body (1) comprises isolating switch (11), vacuum load switch (12), zero-sequence transformer (13), observing and controlling voltage transformer (14), observing and controlling current transformer (15,16), the input of described isolating switch (11) is connected with the service-wire mains side, the output of described isolating switch (11) connects the input of described zero-sequence transformer (13), the output of described zero-sequence transformer (13) connects the input of described vacuum load switch (12), the output of described vacuum load switch (12) is connected with the input of customer charge side supply and distribution network, described observing and controlling voltage transformer (14) is connected in parallel between the two-phase of service-wire power supply, described observing and controlling current transformer (15,16) be the punching instrument transformer, described observing and controlling current transformer (15,16) device is gone up mutually on the both sides of described vacuum load switch (12) output.
2. user demarcation load switch according to claim 1, it is characterized in that: described zero-sequence transformer (13) comprises base (131), mounting panel (132), iron core (133), winding (134), casting epoxy body (135), A phase copper bar and connecting plate (136), B phase copper bar and connecting plate (137), C phase copper bar and connecting plate (138), described iron core (3) is " mouth " font or " O " font, form by high-magnetodensity silicon steel plate packing or coiling, described winding (4) is wound on the described iron core (133), described A phase copper bar and connecting plate (136), B phase copper bar and connecting plate (137), the copper bar of C phase copper bar and connecting plate (138) interts in the window of described iron core (133), described A phase copper bar and connecting plate (136), B phase copper bar and connecting plate (137), the connecting plate device of C phase copper bar and connecting plate (138) is in described iron core (133) both sides, described base (131), mounting panel (132), iron core (133), winding (134), A phase copper bar and connecting plate (136), B phase copper bar and connecting plate (137), C phase copper bar and connecting plate (138) are integral according to die casting by technology by epoxy resin, described iron core (133), winding (134), A phase copper bar and connecting plate (136), B phase copper bar and connecting plate (137), C phase copper bar and connecting plate (138) be mutually insulated each other.
3. user demarcation load switch according to claim 1 and 2, it is characterized in that: described measurement and control unit (2) comprises AC sampling module (21), control output module (22), guidance panel (23), communication interface (24) and CPU (25), and described CPU (25) is electrically connected with described AC sampling module (21), control output module (22), guidance panel (23), communication interface (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200531256U CN201075365Y (en) | 2007-06-22 | 2007-06-22 | User demarcation load switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200531256U CN201075365Y (en) | 2007-06-22 | 2007-06-22 | User demarcation load switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201075365Y true CN201075365Y (en) | 2008-06-18 |
Family
ID=39520623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200531256U Expired - Lifetime CN201075365Y (en) | 2007-06-22 | 2007-06-22 | User demarcation load switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201075365Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101505053B (en) * | 2008-08-07 | 2011-04-27 | 珠海许继电气有限公司 | Power line protection method based on user boundary circuit breaker devices |
| CN106291047A (en) * | 2016-07-29 | 2017-01-04 | 广州供电局有限公司 | Instant inserted and instant using type voltage monitoring system |
-
2007
- 2007-06-22 CN CNU2007200531256U patent/CN201075365Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101505053B (en) * | 2008-08-07 | 2011-04-27 | 珠海许继电气有限公司 | Power line protection method based on user boundary circuit breaker devices |
| CN106291047A (en) * | 2016-07-29 | 2017-01-04 | 广州供电局有限公司 | Instant inserted and instant using type voltage monitoring system |
| CN106291047B (en) * | 2016-07-29 | 2021-02-02 | 广州供电局有限公司 | Plug-and-play voltage monitoring system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101505053B (en) | Power line protection method based on user boundary circuit breaker devices | |
| CN103066500B (en) | Bus connecting method of solid insulating ring main unit | |
| CN101282033A (en) | User demarcation load switch | |
| CN201886106U (en) | Direct current leakage current measuring device | |
| CN201075365Y (en) | User demarcation load switch | |
| CN201075334Y (en) | Three-phase zero sequence mutual inductor | |
| CN202749310U (en) | Replaceable built-in voltage transformer high voltage alternating current dividing circuit breaker | |
| CN202678738U (en) | Configuration structure of 100kV double bus PASS power distribution unit | |
| CN202221434U (en) | Measurement auxiliary operating platform with insulation megger | |
| CN103036157A (en) | Spaced equipment integration and layout structure and method for intelligent substation hybrid gas insulated switchgear (HGIS) power distribution unit | |
| CN203150965U (en) | Cable ring main unit emergency overhaul apparatus | |
| CN203942491U (en) | A kind of photovoltaic array conflux box | |
| CN201263078Y (en) | Integrated equipment of user demarcation circuit breaker | |
| CN207542135U (en) | A kind of remote control disconnecting switch | |
| CN202815071U (en) | High-voltage live detection indication system | |
| CN201805212U (en) | Incoming line open-phase protection device of traction substation | |
| CN2591738Y (en) | Whole-self-protection three phase dry type distributing transformer | |
| CN204905742U (en) | Middling pressure looped netowrk vacuum circuit breaker cabinet | |
| CN203596424U (en) | Cable terminal wiring apparatus | |
| CN111463695A (en) | Prefabricated on-column distribution transformer area | |
| CN209016437U (en) | A kind of 10kV switchgear distribution system | |
| CN203466562U (en) | Intelligent circuit breaker | |
| CN205248174U (en) | Outdoor vacuum circuit breaker | |
| CN205070259U (en) | Device for connecting it connects special use to be used for cubical switchboard to salvage | |
| CN203387169U (en) | Vacuum circuit breaker type loop network cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080618 |
|
| CX01 | Expiry of patent term |