CN106099875A - A kind of based on distributed power generation grid-connected transition method of operation coordination comprehensive method of protection - Google Patents
A kind of based on distributed power generation grid-connected transition method of operation coordination comprehensive method of protection Download PDFInfo
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- CN106099875A CN106099875A CN201610531009.4A CN201610531009A CN106099875A CN 106099875 A CN106099875 A CN 106099875A CN 201610531009 A CN201610531009 A CN 201610531009A CN 106099875 A CN106099875 A CN 106099875A
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- China
- Prior art keywords
- grid
- transformer station
- operation conditions
- power generation
- distributed power
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Classifications
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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 discloses a kind of based on distributed power generation grid-connected transition method of operation coordination comprehensive method of protection; comprise the following steps: S1: prepare operation conditions detection device, failure detector, relay and controller; operation conditions is detected device and failure detector is all connected with grid-connected transformer station; then relay is connected with grid-connected transformer station and high-voltage fence respectively, then operation conditions is detected device, failure detector and relay and is all connected with controller；S2: coordinated mutually with electrical power distribution automatization system by low-frequency and low-voltage device, completes the transfer of accident afterload and isolated island divides；S3: operation troubles response is analyzed, it is achieved the continued power during load fault, and in island, the protection of corresponding microgrid adjusts.The present invention can monitor operation conditions and the failure condition of grid-connected transformer station in real time, can carry out continued power when breaking down, and method is simple, easy to use, low cost.
Description
Technical field
The present invention relates to distributed power generation interconnection technology field, particularly relate to one and ship based on the grid-connected mistake of distributed power generation
Line mode coordinates comprehensive method of protection.
Background technology
At the distributed power source networking initial stage, owing to its scale has uncertainty, grid connection capacity is less, puies forward system
The short circuit current of confession is limited, less on existed system protection impact, now can be regarded as " pure load " character；But when distribution
Formula power supply capacity is continuously increased, and just there has been the feeding ability of the relatively high fault current of offer in grid-connected transformer station, at this moment cannot be again
Treat with load character, but now the corresponding protection device of system side does not follow up, and affects the stable operation of electrical network.
Therefore studying under the transient mode of grid-connected transformer station, obtaining maximally effective protection scheme with limited protection resource is
There is positive effect；Simultaneously under this transient mode, it is considered to how when system jam, discover out of order in time
Occur, and carry out continued power.
Summary of the invention
The technical problem existed based on background technology, the present invention proposes a kind of based on distributed power generation grid-connected transition operation
Mode coordinates comprehensive method of protection.
The present invention propose one based on the distributed power generation grid-connected transition method of operation coordinate comprehensive method of protection, including with
Lower step:
S1: prepare operation conditions detection device, failure detector, relay and controller, operation conditions is detected device and
Failure detector is all connected with grid-connected transformer station, is then connected with grid-connected transformer station and high-voltage fence respectively by relay, connects
And operation conditions is detected device, failure detector and relay be all connected with controller；
S2: coordinated mutually with electrical power distribution automatization system by low-frequency and low-voltage device, completes the transfer of accident afterload and isolated island divides；
S3: operation troubles response is analyzed, it is achieved the continued power during load fault, and in island, corresponding microgrid is protected
Protect adjustment.
Preferably, in described S1, prepare radio transmitters, described radio transmitters respectively with operation conditions detection device,
Failure detector and controller connect.
Preferably, in described S2, the transformer grounding mode of grid-connected transformer station is adjusted.
Preferably, in described S3, prepare stand-by power supply and switch, described switch respectively with stand-by power supply, high-voltage fence and
Controller connects.
Preferably, in described S1, operation conditions detection device is for the operation conditions of the grid-connected transformer station of monitoring in real time.
Preferably, in described S1, failure detector is for detecting the failure condition of grid-connected transformer station.
In the present invention, described one coordinates comprehensive method of protection by fortune based on the distributed power generation grid-connected transition method of operation
Row condition detection apparatus can monitor the operation conditions of grid-connected transformer station in real time, can be to grid-connected power transformation by failure detector
The failure condition stood detects, and can be disconnected the company of grid-connected transformer station and high-voltage fence when breaking down by relay
Connecing, persistently can be powered when breaking down by stand-by power supply, the present invention can monitor the fortune of grid-connected transformer station in real time
Row situation and failure condition, can carry out continued power when breaking down, and method is simple, easy to use, low cost.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is explained orally further.
Embodiment
The present embodiment proposes one and coordinates comprehensive method of protection based on the distributed power generation grid-connected transition method of operation, including
Following steps:
S1: prepare operation conditions detection device, failure detector, relay and controller, operation conditions is detected device and
Failure detector is all connected with grid-connected transformer station, is then connected with grid-connected transformer station and high-voltage fence respectively by relay, connects
And operation conditions is detected device, failure detector and relay be all connected with controller；
S2: coordinated mutually with electrical power distribution automatization system by low-frequency and low-voltage device, completes the transfer of accident afterload and isolated island divides；
S3: operation troubles response is analyzed, it is achieved the continued power during load fault, and in island, corresponding microgrid is protected
Protect adjustment.
In the present embodiment, in S1, preparing radio transmitters, radio transmitters detects device, fault with operation conditions respectively
Detection device and controller connect, and in S2, the transformer grounding mode of grid-connected transformer station are adjusted, in S3, prepare standby
Power supply and switch, switch is connected with stand-by power supply, high-voltage fence and controller respectively, and in S1, operation conditions detection device is used for
Monitoring the operation conditions of grid-connected transformer station in real time, in S1, failure detector is for carrying out the failure condition of grid-connected transformer station
Detection, one is coordinated comprehensive method of protection based on the distributed power generation grid-connected transition method of operation and is detected device energy by operation conditions
Enough operation conditions monitoring grid-connected transformer station in real time, can be carried out the failure condition of grid-connected transformer station by failure detector
Detection, can disconnect the connection of grid-connected transformer station and high-voltage fence, by stand-by power supply energy by relay when breaking down
Enough persistently being powered when breaking down, the present invention can monitor operation conditions and the failure condition of grid-connected transformer station in real time,
Can carry out continued power when breaking down, method is simple, easy to use, low cost.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope that the invention discloses, according to technical scheme and
Inventive concept equivalent or change in addition, all should contain within protection scope of the present invention.
Claims (6)
1. coordinate comprehensive method of protection based on the distributed power generation grid-connected transition method of operation for one kind, it is characterised in that include following
Step:
S1: prepare operation conditions detection device, failure detector, relay and controller, operation conditions is detected device and
Failure detector is all connected with grid-connected transformer station, is then connected with grid-connected transformer station and high-voltage fence respectively by relay, connects
And operation conditions is detected device, failure detector and relay be all connected with controller；
S2: coordinated mutually with electrical power distribution automatization system by low-frequency and low-voltage device, completes the transfer of accident afterload and isolated island divides；
S3: operation troubles response is analyzed, it is achieved the continued power during load fault, and in island, corresponding microgrid is protected
Protect adjustment.
One the most according to claim 1 coordinates comprehensive method of protection based on the distributed power generation grid-connected transition method of operation,
It is characterized in that, in described S1, preparing radio transmitters, described radio transmitters detects device, fault with operation conditions respectively
Detection device and controller connect.
One the most according to claim 1 coordinates comprehensive method of protection based on the distributed power generation grid-connected transition method of operation,
It is characterized in that, in described S2, the transformer grounding mode of grid-connected transformer station is adjusted.
One the most according to claim 1 coordinates comprehensive method of protection based on the distributed power generation grid-connected transition method of operation,
It is characterized in that, in described S3, prepare stand-by power supply and switch, described switch respectively with stand-by power supply, high-voltage fence and control
Device connects.
One the most according to claim 1 coordinates comprehensive method of protection based on the distributed power generation grid-connected transition method of operation,
It is characterized in that, in described S1, operation conditions detection device is for the operation conditions of the grid-connected transformer station of monitoring in real time.
One the most according to claim 1 coordinates comprehensive method of protection based on the distributed power generation grid-connected transition method of operation,
It is characterized in that, in described S1, failure detector is for detecting the failure condition of grid-connected transformer station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610531009.4A CN106099875A (en) | 2016-07-07 | 2016-07-07 | A kind of based on distributed power generation grid-connected transition method of operation coordination comprehensive method of protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610531009.4A CN106099875A (en) | 2016-07-07 | 2016-07-07 | A kind of based on distributed power generation grid-connected transition method of operation coordination comprehensive method of protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106099875A true CN106099875A (en) | 2016-11-09 |
Family
ID=57213403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610531009.4A Pending CN106099875A (en) | 2016-07-07 | 2016-07-07 | A kind of based on distributed power generation grid-connected transition method of operation coordination comprehensive method of protection |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102882197A (en) * | 2012-10-30 | 2013-01-16 | 山东电力集团公司烟台供电公司 | DG (distributed generation)-containing power distribution network distributed protection and control method |
| CN103944160A (en) * | 2014-04-09 | 2014-07-23 | 国家电网公司 | Distribution network protection and automatic device cooperating method based on DG characteristics |
| CN104836334A (en) * | 2014-02-08 | 2015-08-12 | 中国农业大学 | Low voltage microgrid group independent coordination control system |
| CN104836214A (en) * | 2015-04-17 | 2015-08-12 | 国家电网公司 | Distributed generation-based grid connection transition operation mode coordination comprehensive protection method |
-
2016
- 2016-07-07 CN CN201610531009.4A patent/CN106099875A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102882197A (en) * | 2012-10-30 | 2013-01-16 | 山东电力集团公司烟台供电公司 | DG (distributed generation)-containing power distribution network distributed protection and control method |
| CN104836334A (en) * | 2014-02-08 | 2015-08-12 | 中国农业大学 | Low voltage microgrid group independent coordination control system |
| CN103944160A (en) * | 2014-04-09 | 2014-07-23 | 国家电网公司 | Distribution network protection and automatic device cooperating method based on DG characteristics |
| CN104836214A (en) * | 2015-04-17 | 2015-08-12 | 国家电网公司 | Distributed generation-based grid connection transition operation mode coordination comprehensive protection method |
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Application publication date: 20161109 |
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| RJ01 | Rejection of invention patent application after publication |