CN204481493U - Transformer unit synchronous device closing circuit system - Google Patents
Transformer unit synchronous device closing circuit system Download PDFInfo
- Publication number
- CN204481493U CN204481493U CN201520133338.4U CN201520133338U CN204481493U CN 204481493 U CN204481493 U CN 204481493U CN 201520133338 U CN201520133338 U CN 201520133338U CN 204481493 U CN204481493 U CN 204481493U
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- CN
- China
- Prior art keywords
- terminal
- screen
- synchronous device
- closing circuit
- switch
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Abstract
The utility model provides a kind of transformer unit synchronous device closing circuit system, relates to synchronous device technical field, and this system comprises synchronous device screen, G-T protective screen, NCS observing and controlling screen, on the spot switch cubicle and closing circuit; This closing circuit is provided with switch closing relay, asynchronous switch-on loop terminals C
1, terminal C
2, terminal B
1, terminal B
2, terminal A
1, terminal A
2.At terminal C
1and be connected with the action connection point with no pressure and locking same period contact that are arranged in parallel between switch closing relay; Wherein, action connection point with no pressure and locking same period contact are arranged in NCS observing and controlling screen; At terminal A
2with terminal B
2between be connected with a protective device action locking contact; Protective device action locking contact is arranged in G-T protective screen; Terminal B
1, terminal B
2be arranged in synchronous device screen.The utility model solves when transformer unit synchronous device closing circuit occurs abnormal, easily causes the problem of non-synchronous fault.
Description
Technical field
The utility model relates to synchronous device technical field, particularly relates to a kind of transformer unit synchronous device closing circuit system.
Background technology
Current, in power system operation process, normal needs carries out the interconnection of system or system interconnection transformer and electric power system side by side, this operation that mini system is incorporated to Iarge-scale system by switchgears such as circuit breakers is called synchronous operation.Same period herein and switchgear both sides voltage swing is equal, frequency is equal, phase place is identical, and the effect of synchronous device is used to judge whether circuit breaker both sides reach the condition same period, thus determine to perform the grid-connected special purpose device that closes a floodgate.
At present, the operation of transformer unit quasi-synchronization paralleling is the most complicated in electrical operation, the most important operation, once there is the situations such as misoperation, error action of device, circuit defect, non-synchronous accident arranged side by side will be caused, very big to destructive power such as generator and the transformer be in series with it, switchgears, generator coil will be caused time serious to burn, Leading Edge Deformation etc.For electric power system, if a Generator Set generation non-synchronous is arranged side by side, may make to produce power oscillation between this generating set and system, the normal fortune of very disruptive whole system.Current, because synchronous operation or synchronous device, example that the problem generation non-synchronous of synchronization system is arranged side by side are of common occurrence.
Although what current microcomputer type synchronous device can both be more accurate captures asynchronous switch-on point, realize the grid-connected without impacting of generator, but when transformer unit synchronous device closing circuit occurs abnormal, the non-synchronous fault that it causes is difficult to avoid.
Utility model content
Embodiment of the present utility model provides a kind of transformer unit synchronous device closing circuit system, to solve when transformer unit synchronous device closing circuit occurs abnormal, easily causes the problem of non-synchronous fault.
For achieving the above object, the utility model adopts following technical scheme:
A kind of transformer unit synchronous device closing circuit system, is characterized in that, comprising: synchronous device screen, G-T protective screen, NCS observing and controlling screen, on the spot switch cubicle; Described synchronous device screen, G-T protective shield, NCS observing and controlling is shielded and switch cubicle is connected successively by a closing circuit on the spot; Wherein, described closing circuit is provided with switch closing relay, asynchronous switch-on loop terminals C
1, terminal C
2, terminal B
1, terminal B
2, terminal A
1, terminal A
2;
At described terminal C
1with terminal C
2between be connected with a measure and control device outlet junctions, described terminal C
1, terminal C
2, measure and control device outlet junctions be arranged at described NCS observing and controlling screen in;
At described terminal C
1and be connected with the action connection point with no pressure be arranged in parallel and locking same period contact between described switch closing relay; Wherein, described action connection point with no pressure and described locking same period contact are arranged in described NCS observing and controlling screen;
At described terminal A
1with described terminal A
2between be in series with a synchronous device outlet junctions and blocking relay locking same period contact; Described terminal A
1, terminal A
2, synchronous device outlet junctions and described blocking relay locking same period contact be arranged in described synchronous device screen;
At described terminal A
2with described terminal B
2between be connected with a protective device action locking contact; Described protective device action locking contact is arranged in described G-T protective screen; Described terminal B
1, terminal B
2be arranged in described synchronous device screen;
Further, described closing circuit is also provided with the switch closing coil be arranged in series and reclosing outlet junctions; Described in described switch closing coil is arranged on the spot in switch cubicle, described reclosing outlet junctions is arranged in described NCS observing and controlling screen.
The transformer unit synchronous device closing circuit system that the utility model embodiment provides, due to terminal C
1and be connected with the action connection point with no pressure and locking same period contact that are arranged in parallel between switch closing relay, by the closed and disconnected of action connection point with no pressure and locking same period contact, when can ensure that transformer unit meets the condition same period, transformer unit synchronous device closing circuit is closed, again can when occurring abnormal when transformer unit synchronous device closing circuit, transformer unit synchronous device closing circuit is by mistake closed and non-synchronous fault occurs.In addition, due to terminal B
1, terminal B
2be arranged in synchronous device screen, and be not arranged in G-T protective screen, avoid misoperation and short circuit splicing ear B when staff overhauls in G-T protective screen
1with terminal B
2, thus it is by mistake closed and non-synchronous fault occurs to avoid transformer unit synchronous device closing circuit.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the transformer unit synchronous device closing circuit system that Fig. 1 provides for the utility model embodiment;
Fig. 2 is the switch terminal box closing circuit interface diagram on the spot in the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the utility model embodiment provides a kind of transformer unit synchronous device closing circuit system, comprising: synchronous device screen 101, G-T protective screen 102, NCS observing and controlling screen 103, on the spot switch cubicle 104.This synchronous device screen 101, G-T protective screen 102, NCS observing and controlling screen 103 and on the spot switch cubicle 104 connected successively by a closing circuit 105; Wherein, described closing circuit 105 is provided with switch closing relay 106, asynchronous switch-on loop terminals C
1107, terminal C
2108, terminal B
1109, terminal B
2110, terminal A
1111, terminal A
2112.
At this terminal C
1107 and terminal C
2a measure and control device outlet junctions 113 is connected with, this terminal C between 108
1107, terminal C
2108, measure and control device outlet junctions 113 is arranged in described NCS observing and controlling screen 103.
At this terminal C
1the action connection point with no pressure 114 and locking same period contact 115 that are arranged in parallel is connected with between 107 and switch closing relay 106.Wherein, this action connection point 114 with no pressure and locking same period contact 115 are arranged in this NCS observing and controlling screen 103, and draw and receive on the spot in switch cubicle 104.
At terminal A
1111 with terminal A
2a synchronous device outlet junctions 116 and blocking relay locking same period contact 117 is in series with between 112.This terminal A
1111, terminal A
2112, synchronous device outlet junctions 116 and blocking relay locking same period contact 117 are arranged in described synchronous device screen 101.
At terminal A
2112 with terminal B
2a protective device action locking contact 118 is connected with between 110.This protective device action locking contact 118 is arranged in G-T protective screen 102.This terminal B
1109, terminal B
2110 are arranged in described synchronous device screen 101.
In addition, as shown in Figure 1, this closing circuit 105 is also provided with the switch closing coil 119 and reclosing outlet junctions 120 that are arranged in series.This switch closing coil 119 is arranged on the spot in switch cubicle 104, and this reclosing outlet junctions 120 is arranged in NCS observing and controlling screen 103.
In addition, switch is as shown in Figure 2 terminal box closing circuit interface on the spot, and wherein SCK1 is action connection point 114, SCK2 with no pressure is locking same period contact 115.
The transformer unit synchronous device closing circuit system that the utility model embodiment provides, due to terminal C
1and be connected with the action connection point with no pressure and locking same period contact that are arranged in parallel between switch closing relay, by the closed and disconnected of action connection point with no pressure and locking same period contact, when can ensure that transformer unit meets the condition same period, transformer unit synchronous device closing circuit is closed, again can when occurring abnormal when transformer unit synchronous device closing circuit, transformer unit synchronous device closing circuit is by mistake closed and non-synchronous fault occurs.In addition, due to terminal B
1, terminal B
2be arranged in synchronous device screen, and be not arranged in G-T protective screen, avoid misoperation and short circuit splicing ear B when staff overhauls in G-T protective screen
1with terminal B
2, thus it is by mistake closed and non-synchronous fault occurs to avoid transformer unit synchronous device closing circuit.
Apply specific embodiment in the utility model to set forth principle of the present utility model and execution mode, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (2)
1. a transformer unit synchronous device closing circuit system, is characterized in that, comprising: synchronous device screen, G-T protective screen, NCS observing and controlling screen, on the spot switch cubicle; Described synchronous device screen, G-T protective shield, NCS observing and controlling is shielded and switch cubicle is connected successively by a closing circuit on the spot; Wherein, described closing circuit is provided with switch closing relay, asynchronous switch-on loop terminals C
1, terminal C
2, terminal B
1, terminal B
2, terminal A
1, terminal A
2;
At described terminal C
1with terminal C
2between be connected with a measure and control device outlet junctions, described terminal C
1, terminal C
2, measure and control device outlet junctions be arranged at described NCS observing and controlling screen in;
At described terminal C
1and be connected with the action connection point with no pressure be arranged in parallel and locking same period contact between described switch closing relay; Wherein, described action connection point with no pressure and described locking same period contact are arranged in described NCS observing and controlling screen;
At described terminal A
1with described terminal A
2between be in series with a synchronous device outlet junctions and blocking relay locking same period contact; Described terminal A
1, terminal A
2, synchronous device outlet junctions and described blocking relay locking same period contact be arranged in described synchronous device screen;
At described terminal A
2with described terminal B
2between be connected with a protective device action locking contact; Described protective device action locking contact is arranged in described G-T protective screen; Described terminal B
1, terminal B
2be arranged in described synchronous device screen.
2. transformer unit synchronous device closing circuit system according to claim 1, is characterized in that, described closing circuit is also provided with the switch closing coil and reclosing outlet junctions that are arranged in series; Described in described switch closing coil is arranged on the spot in switch cubicle, described reclosing outlet junctions is arranged in described NCS observing and controlling screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520133338.4U CN204481493U (en) | 2015-03-09 | 2015-03-09 | Transformer unit synchronous device closing circuit system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520133338.4U CN204481493U (en) | 2015-03-09 | 2015-03-09 | Transformer unit synchronous device closing circuit system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204481493U true CN204481493U (en) | 2015-07-15 |
Family
ID=53637266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520133338.4U Expired - Fee Related CN204481493U (en) | 2015-03-09 | 2015-03-09 | Transformer unit synchronous device closing circuit system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204481493U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104734198A (en) * | 2015-03-09 | 2015-06-24 | 淮浙煤电有限责任公司凤台发电分公司 | Closing circuit system of generator-transformer unit synchronizing device and control method thereof |
| US11888294B2 (en) | 2021-03-10 | 2024-01-30 | Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | Power distribution device, power distribution trailer, electric drive system and operation method thereof |
-
2015
- 2015-03-09 CN CN201520133338.4U patent/CN204481493U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104734198A (en) * | 2015-03-09 | 2015-06-24 | 淮浙煤电有限责任公司凤台发电分公司 | Closing circuit system of generator-transformer unit synchronizing device and control method thereof |
| US11888294B2 (en) | 2021-03-10 | 2024-01-30 | Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | Power distribution device, power distribution trailer, electric drive system and operation method thereof |
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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: 20150715 Termination date: 20160309 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |