CN203387199U - Generator synchronization grid connected automatic apparatus - Google Patents
Generator synchronization grid connected automatic apparatus Download PDFInfo
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- CN203387199U CN203387199U CN201320464963.8U CN201320464963U CN203387199U CN 203387199 U CN203387199 U CN 203387199U CN 201320464963 U CN201320464963 U CN 201320464963U CN 203387199 U CN203387199 U CN 203387199U
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- generator
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- 238000002955 isolation Methods 0.000 claims abstract description 7
- 230000001360 synchronised effect Effects 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 11
- 238000010586 diagram Methods 0.000 description 4
- 208000033999 Device damage Diseases 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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Abstract
The utility model discloses a generator synchronization grid connected automatic apparatus. The apparatus comprises a main transformer, an operation power supply, a microcomputer synchronization device and an automatic synchronization lockout relay, wherein the main transformer is connected with the microcomputer synchronization device through an isolation transformer and a corner transformer; the automatic synchronization lockout relay is connected with the microcomputer synchronization device; and the operation power supply is used for supplying power to the microcomputer synchronization device. By using the generator synchronization grid connected automatic apparatus, the equipment damage and electrical network accidents caused by synchronization grid connection can be eliminated, the configuration of a synchronization grid connected apparatus can be optimized, and the grid connection reliability is enhanced.
Description
Technical field
The utility model relates to a kind of grid-connected automatics, particularly a kind of generator synchronous grid-connected automatics that installs non-same period of blocking relay additional.
Background technology
At present, the time microcomputer type automatic paralleling device that generator connecting in parallel with system is generally used, once that automatic paralleling device logical circuit occurs is abnormal, the disconnected grid-connected condition of erroneous judgement meets sends reclosing command, will cause asynchronous parallelizing.In the last few years, electrical network generation asynchronous parallelizing accident, caused that generator damaged, and causes the tremendous economic loss.
Simultaneous interconnecting is related to the safe operation of the stable and inner generator of the power supply of electrical network; Asynchronous parallelizing can produce very large impulse current, makes the circuit breaker in generator and generator series connection, and the device damage such as main transformer, also can affect network system when asynchronous parallelizing is serious, makes mains breakdown.
Existing generator synchronous and net mode is divided into automatically and manual two kinds, because microcomputer automatic paralleling unit efficiency is high, sampling accurately, little to the impact of system and generator when grid-connected, so the automatic paralleling assembly first adopts.
But, internal fault easily appears in microcomputer type automatic paralleling device, and be difficult to find, although the grid-connected accuracy rate of automatic paralleling device is high, but do not get rid of the possibility that erroneous judgement is arranged yet, these factors all likely cause asynchronous parallelizing, and asynchronous parallelizing can produce impulse current torsional oscillation etc. affects equipment and system safety.
Therefore, how above-mentioned technology is solved, be those skilled in the art's research direction place.
Summary of the invention
Main purpose of the present utility model is to provide a kind of generator synchronous grid-connected automatics, to solve existing problem in above-mentioned prior art.
In order to achieve the above object, the utility model provides a kind of generator synchronous grid-connected automatics, it comprises: main transformer, operating power, microcomputer synchronization device and automatic paralleling blocking relay, wherein, described main transformer becomes by isolation and the corner change is connected with the microcomputer synchronization device, described automatic paralleling blocking relay is connected with described microcomputer synchronization device, and described operating power is for powering to described microcomputer synchronization device.
Wherein, also comprise the microcomputer synchronization select switch, it with described isolation change, corner, becomes and the microcomputer synchronization device is connected, and is used to indicate the selected state of corresponding same period of object.
Wherein, also comprise the diverter switch same period, be connected with described microcomputer synchronization select switch and described microcomputer synchronization device, for carrying out the switching same period.
Compared with prior art, the beneficial effects of the utility model are: stop to occur that asynchronous parallelizing causes device damage and power grid accident, optimize the configuration of simultaneous interconnecting device, improve grid-connected reliability.
The accompanying drawing explanation
Fig. 1 is the generator synchronous grid-connected automatics circuit diagram of the utility model;
Fig. 2 is the generator synchronous grid-connected automatics asynchronous switch-on of the utility model loop schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, above-mentionedly to the utility model with other technical characterictic and advantage, be described in more detail.
As shown in Figures 1 and 2, be the generator synchronous grid-connected automatics circuit diagram of the utility model and asynchronous switch-on loop schematic diagram.Generator synchronous grid-connected automatics of the present utility model comprises: main transformer, operating power, microcomputer synchronization device and automatic paralleling blocking relay, wherein, described main transformer becomes by isolation and the corner change is connected with the microcomputer synchronization device, described automatic paralleling blocking relay (as the 1TJJ in Fig. 2) is connected with described microcomputer synchronization device, and described operating power is for powering to described microcomputer synchronization device.
Shown in sustainable participation Fig. 2, the utility model also comprise the microcomputer synchronization select switch and the same period diverter switch, described microcomputer synchronization select switch and described isolation change, corner become and the microcomputer synchronization device is connected, and are used to indicate the selected state of corresponding same period of object; Described same period, diverter switch was connected with described microcomputer synchronization select switch and described microcomputer synchronization device, for carrying out the switching same period.
In sum, the utility model in generator automatic paralleling device closing circuit, install additional one non-same period blocking relay, can effectively avoid the generation of non-Switching Synchronization accident.Judge to satisfy condition the same period at the microcomputer synchronization device and send reclosing command, the same period, blocking relay also met the condition same period simultaneously, allowed closing contact to connect, and can close a floodgate.If unexpected factor causes microcomputer automatic paralleling device erroneous judgement disconnected, non-blocking relay same period contact can conducting, and Generator Outlet Switchgear can not close, and asynchronous parallelizing can not occur.Rely on separately the microcomputer automatics grid-connected, if unexpected factor causes the automatic paralleling device, erroneous judgement is disconnected, can cause asynchronous parallelizing, and after installing non-same period of blocking relay additional, many one deck guarantees, avoid the asynchronous parallelizing accident to occur.
Above explanation is just illustrative for the utility model; and it is nonrestrictive; those of ordinary skills understand; in the situation that do not break away from the spirit and scope that following claims limit; can make many modifications; change, or equivalence, but all will fall in protection range of the present utility model.
Claims (3)
1. a generator synchronous grid-connected automatics, it is characterized in that, it comprises: main transformer, operating power, microcomputer synchronization device and automatic paralleling blocking relay, wherein, described main transformer becomes by isolation and the corner change is connected with the microcomputer synchronization device, described automatic paralleling blocking relay is connected with described microcomputer synchronization device, and described operating power is for powering to described microcomputer synchronization device.
2. a kind of generator synchronous grid-connected automatics according to claim 1, is characterized in that, also comprises the microcomputer synchronization select switch, and it with described isolation change, corner, becomes and the microcomputer synchronization device is connected, and is used to indicate the selected state of corresponding same period of object.
3. a kind of generator synchronous grid-connected automatics according to claim 1, is characterized in that, also comprises the diverter switch same period, with described microcomputer synchronization select switch and described microcomputer synchronization device, is connected, for carrying out the switching same period.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320464963.8U CN203387199U (en) | 2013-07-31 | 2013-07-31 | Generator synchronization grid connected automatic apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320464963.8U CN203387199U (en) | 2013-07-31 | 2013-07-31 | Generator synchronization grid connected automatic apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203387199U true CN203387199U (en) | 2014-01-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320464963.8U Expired - Fee Related CN203387199U (en) | 2013-07-31 | 2013-07-31 | Generator synchronization grid connected automatic apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN203387199U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103795087A (en) * | 2014-02-20 | 2014-05-14 | 国电南瑞科技股份有限公司 | Control method for smooth and synchronous grid connection of mircrogrid |
-
2013
- 2013-07-31 CN CN201320464963.8U patent/CN203387199U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103795087A (en) * | 2014-02-20 | 2014-05-14 | 国电南瑞科技股份有限公司 | Control method for smooth and synchronous grid connection of mircrogrid |
| CN103795087B (en) * | 2014-02-20 | 2015-11-18 | 国电南瑞科技股份有限公司 | The level and smooth simultaneous interconnecting control method of a kind of micro-capacitance sensor |
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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: 20140108 |
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| CF01 | Termination of patent right due to non-payment of annual fee |