CN203632263U - Grid-connected access structure of distributed photovoltaic power station and transformer substation 10KV bus - Google Patents
Grid-connected access structure of distributed photovoltaic power station and transformer substation 10KV bus Download PDFInfo
- Publication number
- CN203632263U CN203632263U CN201320812484.0U CN201320812484U CN203632263U CN 203632263 U CN203632263 U CN 203632263U CN 201320812484 U CN201320812484 U CN 201320812484U CN 203632263 U CN203632263 U CN 203632263U
- Authority
- CN
- China
- Prior art keywords
- bus
- power station
- grid
- photovoltaic power
- distributed photovoltaic
- 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 - Fee Related
Links
Images
Classifications
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model discloses a grid-connected access structure of a distributed photovoltaic power station and a transformer substation 10KV bus. The photovoltaic power station and the transformer substation 10KV bus are connected through a cable. The grid-connected access structure comprises two sets of protection devices arranged on the cable line connecting the transformer substation 10KV bus and the photovoltaic power station, and the two sets of protection devices are respectively arranged at the bus side and the photovoltaic power station side. The grid-connected access structure of the distributed photovoltaic power station and the transformer substation 10KV bus is capable of ensuring the power supply reliability after the grid connection, reducing the power failure range and effectively realizing fault elimination after a failure.
Description
Technical field
The utility model relates to the grid connected structure that a kind of generating is connected to the grid, the particularly grid integration structure of a kind of distributed photovoltaic power station and the 10kV of transformer station bus, the single and site capacity 1 MW～6MW of this distributed photovoltaic power generation.
Background technology
20th century, particularly since the seventies,, along with the fast development of World Economics, the mankind were doubled and redoubled to the demand of the energy, and energy industry is also with unprecedented scale development.But some problems of bringing therefrom, have also caused showing great attention to of many countries.Country using coal, oil as main primary energy, not only be faced with the problem of conventional energy resource exhaustion, and due to a large amount of uses of fossil energy, directly cause and global warming and day by day serious problem of environmental pollution natural ecosystems, social economy and health have all been formed to serious threat to emission greenhouse gas in atmosphere and aerosol etc.Develop new forms of energy and become world energy sources strategy of sustainable development important component part.The status of regenerative resource will obtain tremendous increase in this century, predicts the outcome according to Japan and Shell, and page in this century, regenerative resource will reach 50% of energy total amount, and photovoltaic generation will reach 15% left and right.Therefore, research is incorporated to existing electrical network by grid-connected photovoltaic plant electricity, extremely urgent, but in existing and network process, exist reliability not high, fault report barrier inefficiency, easily cause on a large scale and have a power failure, and, after being out of order, be relatively difficult to effectively excise fault.
Utility model content
The purpose of this utility model is to provide the grid integration structure of a kind of distributed photovoltaic power station and the 10kV of transformer station bus, can report the power supply reliability of barrier after grid-connected, reduces power failure range, and excises fault after effectively realizing fault.
In order to realize above object, the utility model is achieved through the following technical solutions:
The grid integration structure of a kind of distributed photovoltaic power station and the 10kV of transformer station bus; described photovoltaic plant is connected by cable with transformer station 10kV bus; comprise: be arranged on two cover protective devices on the cable line that connects the 10kV of transformer station bus and photovoltaic plant, two described cover protective devices are separately positioned on bus bar side and photovoltaic plant side.
Current sensor, described current sensor is arranged on cable;
Current transformer, described current transformer is connected with the output of current sensor by circuit;
Overcurrent protector, the input of described overcurrent protector is connected with current transformer;
Relay, the input of described relay is connected with the output of overcurrent protector;
Circuit breaker, the control signal input of described circuit breaker is connected with the output of relay by circuit.
Described overcurrent protector is microcomputer protecting device.
In described every cover protective device, comprise primary and backup overcurrent protector.
The utility model compared with prior art, has the following advantages:
Power supply reliability after can reporting barrier grid-connected, reduces power failure range, and excises fault after effectively realizing fault.
Brief description of the drawings
Fig. 1 is the circuit theory diagrams of the grid integration structure of the utility model a kind of distributed photovoltaic power station and the 10kV of transformer station bus;
Fig. 2 is the structured flowchart of the protective device of the grid integration structure of the utility model a kind of distributed photovoltaic power station and the 10kV of transformer station bus.
Embodiment
Below in conjunction with accompanying drawing, by describing a preferably specific embodiment in detail, the utility model is further elaborated.
As shown in Figure 1; the grid integration structure of a kind of distributed photovoltaic power station and the 10kV of transformer station bus; described photovoltaic plant is connected by cable 2 with the 10kV of transformer station bus; comprise: two cover protective device 1, the two cover protective devices 1 that are arranged on the cable line that connects the 10kV of transformer station bus and photovoltaic plant are separately positioned on bus bar side and photovoltaic plant side.
As shown in Figure 2, every cover protective device 1 comprises: current sensor 11, current transformer 12, overcurrent protector 13, relay 14, circuit breaker 15, and wherein, current sensor 11 is arranged on cable 3; Current transformer 12 is connected with the output of current sensor 11 by circuit, and in the present embodiment, relaying protection should be used the secondary winding of special current transformer, and its class of accuracy should adopt 5P, 10P level; The input of overcurrent protector 13 is connected with current transformer 12; in the present embodiment; overcurrent protector 13 is microcomputer protecting device; in order to ensure can and Times barrier; in protective device 1, adopt the configuration of primary and backup microcomputer protecting device, guarantee that main protection is not more than 20ms whole group of operate time, return time is not more than 30ms (returning to protection outlet contact from failure removal); simultaneously, at closing by hand or while coinciding with on faulty line, protection should be able to reliable instantaneous three-phase tripping operation.Closing by hand or should reliably be failure to actuate while coinciding with fault-free circuit; The input of relay 14 is connected with the output of overcurrent protector 13; The control signal input of circuit breaker 15 is connected with the output of relay 14 by circuit.
In the time using; when photovoltaic plant circuit is short-circuited fault; current sensor 11 detects overcurrent; send it to overcurrent protector 13; after overcurrent protector 13 failure judgement, send to circuit breaker 15, make its quick acting; instantaneous tripping circuit breaker 15, the requirement of fast and reliable excision fault while meeting all fronts fault.
In sum, the grid integration structure of the utility model a kind of distributed photovoltaic power station and the 10kV of transformer station bus, can report the power supply reliability of barrier after grid-connected, reduces power failure range, and excises fault after effectively realizing fault.
Although content of the present utility model has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.Read after foregoing those skilled in the art, for multiple amendment of the present utility model and substitute will be all apparent.Therefore, protection range of the present utility model should be limited to the appended claims.
Claims (4)
1. the grid integration structure of a distributed photovoltaic power station and the 10kV of transformer station bus; described photovoltaic plant is connected by cable (2) with the 10kV of transformer station bus; it is characterized in that; comprise: be arranged on two cover protective devices (1) on the cable line that connects the 10kV of transformer station bus and photovoltaic plant, two described cover protective devices (1) are separately positioned on bus bar side and photovoltaic plant side.
2. the grid integration structure of distributed photovoltaic as claimed in claim 1 power station and the 10kV of transformer station bus, is characterized in that, described every cover protective device (1) comprises:
Current sensor (11), described current sensor (11) is arranged on cable (3);
Current transformer (12), described current transformer (12) is connected with the output of current sensor (11) by circuit;
Overcurrent protector (13), the input of described overcurrent protector (13) is connected with current transformer (12);
Relay (14), the input of described relay (14) is connected with the output of overcurrent protector (13);
Circuit breaker (15), the control signal input of described circuit breaker (15) is connected with the output of relay (14) by circuit.
3. the grid integration structure of distributed photovoltaic as claimed in claim 2 power station and the 10kV of transformer station bus, is characterized in that, described overcurrent protector (13) is microcomputer protecting device.
4. the grid integration structure of distributed photovoltaic power station and the 10kV of transformer station bus as claimed in claim 2 or claim 3, is characterized in that, in described every cover protective device (1), comprises primary and backup overcurrent protector (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320812484.0U CN203632263U (en) | 2013-12-12 | 2013-12-12 | Grid-connected access structure of distributed photovoltaic power station and transformer substation 10KV bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320812484.0U CN203632263U (en) | 2013-12-12 | 2013-12-12 | Grid-connected access structure of distributed photovoltaic power station and transformer substation 10KV bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203632263U true CN203632263U (en) | 2014-06-04 |
Family
ID=50818705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320812484.0U Expired - Fee Related CN203632263U (en) | 2013-12-12 | 2013-12-12 | Grid-connected access structure of distributed photovoltaic power station and transformer substation 10KV bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203632263U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103606961A (en) * | 2013-12-12 | 2014-02-26 | 国网上海市电力公司 | Distributed photovoltaic power station/transformer substation 10kV bus grid-integration structure |
| CN106549382A (en) * | 2017-02-08 | 2017-03-29 | 国网上海市电力公司 | A kind of relay protection scheme device got in touch between the Substation Station for 110KV |
-
2013
- 2013-12-12 CN CN201320812484.0U patent/CN203632263U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103606961A (en) * | 2013-12-12 | 2014-02-26 | 国网上海市电力公司 | Distributed photovoltaic power station/transformer substation 10kV bus grid-integration structure |
| CN106549382A (en) * | 2017-02-08 | 2017-03-29 | 国网上海市电力公司 | A kind of relay protection scheme device got in touch between the Substation Station for 110KV |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Farhoodnea et al. | Power quality impact of renewable energy based generators and electric vehicles on distribution systems | |
| CN103354354B (en) | Be applicable to impedance protecting method and the device of micro-capacitance sensor | |
| Rahman et al. | DC fault protection strategy considering DC network partition | |
| CN103996986A (en) | Box type energy storage transformer substation structure | |
| Vijeta et al. | Protection of distributed generation connected distribution system | |
| CN203632263U (en) | Grid-connected access structure of distributed photovoltaic power station and transformer substation 10KV bus | |
| Bagriyanik et al. | The effect of fault current limiters on distribution systems with wind turbine generators | |
| CN103606963B (en) | The grid integration structure of a kind of distributed photovoltaic power station and 380V user's distribution box | |
| CN202817567U (en) | Intelligent box-type wind power substation | |
| CN203674730U (en) | Distributed-type grid-connected access structure of photovoltaic power stations and 380V user power distribution boxes | |
| CN203632264U (en) | Grid-connected access structure of distributed photovoltaic power station and power distribution station 10KV bus | |
| CN203632266U (en) | Grid-connected access structure of distributed photovoltaic power station and 10KV power grid overhead line | |
| CN203632265U (en) | Grid-connected access structure of distributed photovoltaic power station and 380KV power grid overhead line | |
| CN203632268U (en) | Grid-connected access structure of distributed photovoltaic power stations and 380KV user box transformer substations | |
| CN103618338B (en) | The grid integration structure of a kind of distributed photovoltaic power station and power distribution station 10kV bus | |
| CN103701221A (en) | Intelligent measurement and control unit of box transformer | |
| CN203632267U (en) | Grid-connected access structure of distributed photovoltaic power station and power distribution station 380KV bus | |
| CN103606962B (en) | The grid integration structure of a kind of distributed photovoltaic power station and 380V electrical network overhead transmission line | |
| CN103618337B (en) | The grid integration structure of a kind of distributed photovoltaic power station and 10kV electrical network overhead transmission line | |
| Missrani et al. | Study on short circuit current contribution after photovoltaic solar plant integration in Lombok’s distribution network | |
| Parker et al. | DC protection of a multi-terminal HVDC network featuring offshore wind farms | |
| CN103606961A (en) | Distributed photovoltaic power station/transformer substation 10kV bus grid-integration structure | |
| Rahman et al. | DC fault protection of multi-terminal HVDC systems using DC network partition and DC circuit breakers | |
| CN103606960A (en) | Distributed photovoltaic power station/power distribution station 380V bus grid-integration structure | |
| CN203839980U (en) | Photovoltaic power station grid-connected system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20141212 |
|
| EXPY | Termination of patent right or utility model |