CN202888865U - Unit synchronization system provided with synchronization block relay - Google Patents
Unit synchronization system provided with synchronization block relay Download PDFInfo
- Publication number
- CN202888865U CN202888865U CN 201220370609 CN201220370609U CN202888865U CN 202888865 U CN202888865 U CN 202888865U CN 201220370609 CN201220370609 CN 201220370609 CN 201220370609 U CN201220370609 U CN 201220370609U CN 202888865 U CN202888865 U CN 202888865U
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- same period
- unit
- synchronization
- relay
- blocking relay
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Abstract
The utility model provides a unit synchronization system provided with a synchronization block relay. Synchronization points of a unit are connected with the synchronization block relay. Connection points of the synchronization block relay are connected to an outlet of a synchronization device and a closing circuit of a synchronization point circuit breaker in series correspondingly. The unit synchronization system provided with the synchronization block relay provided by the utility model has advantages of simple return circuit, clear principle, high reliability and good practical effect.
Description
Technical field
The utility model relates to a kind of unit synchronization system for the thermal power generation unit, relates in particular to a kind of unit synchronization system with blocking relay same period.
Background technology
In the middle of the power industry, Thermal Power Enterprises all is to adopt the microcomputer synchronization device to be incorporated into the power networks, it is perfectly safe that the microcomputer type synchronous device can not guarantee, for generator connecting in parallel with system operation control, the safe consideration of will putting in the first place all the time, its rapidity should be placed on backseat, does not allow to cause generator asynchronous parallelizing accident owing to any reason causes the outlet of automatic paralleling device mistake, therefore in the microcomputer synchronization device, be necessary to increase the blocking function same period, avoid the generation of non-same period of accident.
Summary of the invention
The purpose of this utility model is to provide a kind of unit synchronization system with blocking relay same period, is used to the microcomputer synchronization device to increase the blocking function same period, avoids the generation of non-same period of accident.
To achieve these goals, on the one hand, in the unit synchronization system with blocking relay same period that the utility model provides, same period of unit, point all connected the blocking relay same period, described same period blocking relay the contact correspondence be concatenated into unit the synchronous device outlet and the same period point breaker closing circuit in.
Wherein, described unit synchronization system with blocking relay same period, also comprise auxiliary relay, unit main transformer high-pressure side connects described same period of blocking relay, drops into or withdraw from the both end voltage that adds described same period of blocking relay with the normal opened contact that utilizes described auxiliary relay.
The utility model arranges the different locked loops same period according to the different bus modes of connection, can realize dropping into simultaneously function with the microcomputer synchronization device, further, can prevent effectively that same period blocking relay is charged for a long time.
Description of drawings
Fig. 1 is the connection circuit structural representation of the utility model preferred embodiment one;
Fig. 2 is the connection circuit structural representation of the utility model preferred embodiment two;
Fig. 3 is the connection circuit structural representation of the utility model preferred embodiment three.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further details.
Fig. 1 schematically shows the wiring construction of the utility model preferred embodiment one, and this preferred embodiment one is 1TJJ Backup Power Switch 1, and it comprises main transformer high-pressure side 11 and line side 12, and wherein main transformer high-pressure side 11 is 3/2 mode of connection.Every unit have two the same period point, each same period point increase respectively one the same period blocking relay 13 and the same period blocking relay 14, be used for relatively treating respectively and side voltage and system side voltage.As shown in Figure 1, the same period blocking relay 13 and the same period blocking relay 14 contact correspondence be concatenated into the synchronous device outlet and the same period point breaker closing circuit in.
Fig. 2 schematically shows the wiring construction of the utility model preferred embodiment two, and this preferred embodiment two is 2TJJ Backup Power Switch 2, and it comprises main transformer high-pressure side 21 and bus bar side 22, and wherein main transformer high-pressure side 21 also is 3/2 mode of connection.Every unit have two the same period point, each same period point increase respectively one the same period blocking relay 23 and the same period blocking relay 24, be used for relatively treating respectively and side voltage and system side voltage.As shown in Figure 2, the same period blocking relay 23 and the same period blocking relay 24 contact correspondence be concatenated into the synchronous device outlet and the same period point breaker closing circuit in.
Fig. 3 schematically shows the wiring construction of the utility model preferred embodiment three, and this preferred embodiment three is the switch 3 that the 220KV double-bus connects for the main transformer high-pressure side, and the unit blocking relay same period 32 and combined floodgate contact wiring situation are as shown in Figure 3.Charged for a long time for preventing same period blocking relay 32, drop into the loop and connect auxiliary relay 31 in the same period, utilize the normal opened contact of auxiliary relay 31 to drop into or withdraw from the voltage at the two ends that add the blocking relay same period.Consider the reliability of combined floodgate, it is 30 degree that blocking relay 32 the angle suggestion same period is adjusted, behind generator terminal voltage process isolating transformer corner, receive respectively blocking relay two coils of 32 same period with 220KV bus TV (voltage transformer) secondary voltage, with the same period blocking relay 32 contact be concatenated in the closing circuit of synchronous device outlet and circuit breaker.
To sum up, the utility model can be according to the different bus modes of connection, the different locked loops same period is set, have with the microcomputer synchronization device and drop into simultaneously function, can prevent effectively that same period blocking relay is charged for a long time, in general, the utlity model has that the loop is simple, principle is clear, reliability is strong, the advantage of good practical effect.As known by the technical knowledge, the utility model can be realized by other the embodiment that does not break away from its Spirit Essence or essential feature.Therefore, above-mentioned disclosed embodiment with regard to each side, all just illustrates, and is not only.All in the utility model scope or the change that is being equal in the scope of the present utility model all be included in the utility model.
Claims (2)
1. unit synchronization system with blocking relay same period, it is characterized in that, same period of unit, point all connected the blocking relay same period, described same period blocking relay the contact correspondence be concatenated into unit the synchronous device outlet and the same period point breaker closing circuit in.
2. the unit synchronization system with blocking relay same period as claimed in claim 1, it is characterized in that, also comprise auxiliary relay, unit main transformer high-pressure side connects described same period of blocking relay, drops into or withdraw from the both end voltage that adds described same period of blocking relay with the normal opened contact that utilizes described auxiliary relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220370609 CN202888865U (en) | 2012-07-27 | 2012-07-27 | Unit synchronization system provided with synchronization block relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220370609 CN202888865U (en) | 2012-07-27 | 2012-07-27 | Unit synchronization system provided with synchronization block relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202888865U true CN202888865U (en) | 2013-04-17 |
Family
ID=48080255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220370609 Expired - Fee Related CN202888865U (en) | 2012-07-27 | 2012-07-27 | Unit synchronization system provided with synchronization block relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202888865U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647306A (en) * | 2013-12-10 | 2014-03-19 | 龙滩水电开发有限公司 | Automatic quasi-synchronization closing loop for preventing generator nonsynchronous closing |
| CN106684927A (en) * | 2017-03-30 | 2017-05-17 | 山东中实易通集团有限公司 | Grid-connected system for large generator sets in isolated grid system and grid-connected method |
-
2012
- 2012-07-27 CN CN 201220370609 patent/CN202888865U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647306A (en) * | 2013-12-10 | 2014-03-19 | 龙滩水电开发有限公司 | Automatic quasi-synchronization closing loop for preventing generator nonsynchronous closing |
| CN103647306B (en) * | 2013-12-10 | 2015-08-12 | 龙滩水电开发有限公司 | A kind of automatic presynchronization closing circuit preventing generator asynchronous from closing a floodgate |
| CN106684927A (en) * | 2017-03-30 | 2017-05-17 | 山东中实易通集团有限公司 | Grid-connected system for large generator sets in isolated grid system and grid-connected method |
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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: 20130417 Termination date: 20140727 |
|
| EXPY | Termination of patent right or utility model |