CN208461471U - Distributed low-tension supply integration grid-connection cabinet - Google Patents
Distributed low-tension supply integration grid-connection cabinet Download PDFInfo
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- CN208461471U CN208461471U CN201820408594.3U CN201820408594U CN208461471U CN 208461471 U CN208461471 U CN 208461471U CN 201820408594 U CN201820408594 U CN 201820408594U CN 208461471 U CN208461471 U CN 208461471U
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- grid
- circuit breaker
- open frame
- frame circuit
- breaker
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Abstract
The utility model discloses a kind of distributed low-tension supply integration grid-connection cabinets; including bus plug connector, three-phase and four-line bus, disconnecting switch, open frame circuit breaker and input breaker; bus plug connector, disconnecting switch, open frame circuit breaker and the input breaker is sequentially connected in series on three-phase and four-line bus; current transformer for metering is set between disconnecting switch and open frame circuit breaker; Verification of Measuring Current Transformer and protective current transformer, are set between open frame circuit breaker and input breaker, and surge protector is arranged in the input terminal of open frame circuit breaker.The connection of all components of the utility model can not need joint connection in site all in the integrated completion of inside plants.It is according to the status of the grid-connected characteristic of distributed generation resource and domestic current 0.4 KV distribution system; Integrated Solution design is standardized to distributed generation resource low-pressure grid-connection cabinet; it is able to satisfy simultaneously/off-network to control, protection, measurement, measure the access requirement of distributed power grid, realizes integration, the intelligence, modularization of distributed generation resource grid integration.
Description
Technical field
The utility model relates to a kind of design of distributed generation resource grid-connection cabinet using low-pressure grid-connection, take this to realize distributed
The standardization of power supply low-pressure grid-connection.
Background technique
More and more (signified low pressure is main in the utility model for the quantity of domestic distributed generation resource low-pressure grid-connection in recent years
Refer to 400 volts of voltage class, distributed generation resource refers mainly to distributed photovoltaic power, distributed wind-power generator power supply, distributed photo-thermal
Power generating source, distributed biomass power generation power supply etc.).Since there is no the sides of unified standardization grid-connection cabinet in current industry
Case causes grid-connection cabinet form multifarious, and grid-connection cabinet inherently safe hidden danger is relatively more, and it is difficult to increase to the grid-connected examination of power supply department
Degree, while also increasing the hidden danger of user power utilization safety.
Summary of the invention
The purpose of the utility model is to overcome the deficiencies of prior art, provide a kind of integrated grid-connection cabinet, make every effort to realize existing
There are the standardized designs of the distributed generation resource grid-connection cabinet using low-pressure grid-connection, and meet the code requirement of national standardization design,
Increase grid-connected intelligence, modularization, safe and the simple operation degree of distributed generation resource, thus reduce installation and manufacture at
This, economizes on resources.
Realize that the technical solution of the utility model aim is as described below:
A kind of distribution low-tension supply integration grid-connection cabinet, it is characterised in that: the grid-connection cabinet includes bus plug connector, three
Four line bus of phase, disconnecting switch, open frame circuit breaker and input breaker, the bus plug connector, disconnecting switch, drawer
Formula breaker and input breaker are sequentially connected in series on three-phase and four-line bus, are arranged between disconnecting switch and open frame circuit breaker
Verification of Measuring Current Transformer and protection electric current is arranged between open frame circuit breaker and input breaker in current transformer for metering
Surge protector is arranged in the input terminal of mutual inductor, open frame circuit breaker.
Metering signal is conveyed to electricity-measuring meter by the current transformer for metering, completes distributed generation resource generated energy
Charging.
The measuring signal of the Verification of Measuring Current Transformer sends measuring instrumentss or measuring device to, realizes electric parameter
Measurement.
The protective current transformer, sends protective current signal to protective device, for protective device judgement system
The operating condition of system.
Distribution low-tension supply integration grid-connection cabinet provided by the utility model, the connection of all components can be all in work
Being internally integrated of factory is completed, and joint connection in site is not needed.Its core concept is current according to the grid-connected characteristic of distributed generation resource and the country
The status of 0.4 KV distribution system, the standardized set carried out to distributed generation resource low-pressure grid-connection cabinet can expire at conceptual design
Foot simultaneously/off-network control, protection, measurement, metering distributed power grid access require, realize distributed generation resource grid integration
Integration, intelligence, modularization, can be used as a kind of overall plan that distributed generation resource is grid-connected and promote and apply.
Detailed description of the invention
Fig. 1 is the utility model embodiment structural principle block diagram.
Wherein: electric current is used in 1- bus plug connector, 2- three-phase and four-line bus, 3- disconnecting switch, 4- current transformer, 5 measurements
Mutual inductor-, 6- protective current transformer, 7- open frame circuit breaker, 8- surge protector, 9- input breaker, and 10- cable connects
Head, 11- electricity-measuring meter, 12- measuring instrumentss or measuring device, 13- protective device.
Specific embodiment
Specific embodiment of the present utility model is further described with reference to the accompanying drawings and embodiments:
Distribution low-tension supply integration grid-connection cabinet provided in this embodiment, including bus plug connector 1, three-phase and four-line bus
2, disconnecting switch 3(or be isolation knife-like switch), open frame circuit breaker 7(or be drawout breaker, withdraw-type breaker) with
And input breaker 9, (other storage such as screw rods, cabinet shell attachment do not provide).Three-phase and four-line bus 2 can be used copper bus or
Aluminum bus.Bus plug connector 1, disconnecting switch 3, open frame circuit breaker 7 and input breaker 9 are sequentially connected in series in three-phase and four-line
On bus 2, and installation order cannot become.Current transformer for metering 4 is set between disconnecting switch 3 and open frame circuit breaker 7, is taken out
Verification of Measuring Current Transformer 5 and protective current transformer, 6 are set between drawer formula breaker 7 and input breaker 9, and drawer type is disconnected
The input terminal setting surge protector 8(of road device 7 is surge protective device).
As shown in Figure 1, bus plug connector 1 is connected to the output end of disconnecting switch 3, disconnecting switch 3 by three-phase and four-line bus 2
Input terminal pass through the output end that three-phase and four-line bus 2 is connected to open frame circuit breaker 7 again, current transformer for metering 4 is set in
On copper bus-bar between disconnecting switch 3 and open frame circuit breaker 7, metering signal is conveyed to electricity-measuring meter 11, completes distribution
There is an isolation fracture at the charging of formula power supply generated energy, 4 both ends of current transformer for metering herein, an isolation fracture by every
It leaves pass 3 to provide, another isolation fracture is provided by open frame circuit breaker 7, it is ensured that when replacement or maintenance metering device
Safety.The input terminal of open frame circuit breaker 7 is connected to the output end of input breaker 9 by three-phase and four-line bus 2, and inputs open circuit
The input terminal of device 9 is connect by the cable connector 10 of multiple parallel connections with external distributed power supply, Verification of Measuring Current Transformer 5 and guarantor
Shield Current Transformer 6 is set in open frame circuit breaker 7 and inputs on the copper bus-bar between breaker 9, the measurement electricity consumption
The measuring signal of current transformer 5 sends measuring instrumentss or measuring device 12 to, realizes the measurement of electric parameter.Protection electric current is mutual
Sensor 6 sends protective current signal to protective device 13, and the operating condition of system is judged for protective device.
Surge protector 8 is mounted between the input terminal and ground of open frame circuit breaker 7, absorbs the introducing of distributed electrical source
Overvoltage and power surge, ensure that will not to protective device generate malfunction.Surge protector 8 can also be using lightning-arrest
Device.It is arranged in cabinet body (not shown in figure 1) with upper-part, and the above connection can be all integrated complete in inside plants
At not needing joint connection in site.
The outside of mounted the utility model distribution low-tension supply integration grid-connection cabinet and distributed generation resource is grid-connected to be connect
Line mode is: distributed generation resource is accessed the input of the input breaker 9 of this integration grid-connection cabinet by scene by cable connector 10
End, then by bus plug connector 1 and intend grid-connected low-voltage distribution system bus grafting.Bus plug connector 1 and drawer type open circuit
Electrical interlocks is set between device 7, only when open frame circuit breaker 7 could operate bus plug connector 1 when disconnecting, when bus grafting
Open frame circuit breaker 7 has to be off when part 1 disconnects, and avoids on-load operation generation electric arc in this way and causes danger.
Claims (4)
1. a kind of distribution low-tension supply integration grid-connection cabinet, it is characterised in that: the grid-connection cabinet include bus plug connector (1),
Three-phase and four-line bus (2), disconnecting switch (3), open frame circuit breaker (7) and input breaker (9), the bus plug connector
(1), disconnecting switch (3), open frame circuit breaker (7) and input breaker (9) are sequentially connected in series on three-phase and four-line bus (2),
Current transformer for metering (4) are set between disconnecting switch (3) and open frame circuit breaker (7), open frame circuit breaker (7) and input
Verification of Measuring Current Transformer (5) and protective current transformer, (6) be set between breaker (9), open frame circuit breaker (7) it is defeated
Enter end setting surge protector (8).
2. distribution low-tension supply integration grid-connection cabinet according to claim 1, it is characterised in that: electric current is used in the metering
Metering signal is conveyed to electricity-measuring meter (11) by mutual inductor (4), completes the charging of distributed generation resource generated energy.
3. distribution low-tension supply integration grid-connection cabinet according to claim 1, it is characterised in that: the measurement electricity consumption
The measuring signal of current transformer (5) sends measuring instrumentss or measuring device (12) to, realizes the measurement of electric parameter.
4. distribution low-tension supply integration grid-connection cabinet according to claim 1, it is characterised in that: the protection electricity consumption
Current transformer (6) sends protective current signal to protective device (13), and the operating condition of system is judged for protective device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820408594.3U CN208461471U (en) | 2018-03-26 | 2018-03-26 | Distributed low-tension supply integration grid-connection cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820408594.3U CN208461471U (en) | 2018-03-26 | 2018-03-26 | Distributed low-tension supply integration grid-connection cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208461471U true CN208461471U (en) | 2019-02-01 |
Family
ID=65156826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820408594.3U Expired - Fee Related CN208461471U (en) | 2018-03-26 | 2018-03-26 | Distributed low-tension supply integration grid-connection cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208461471U (en) |
-
2018
- 2018-03-26 CN CN201820408594.3U patent/CN208461471U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190201 Termination date: 20190326 |