CN208142828U - A kind of micro- auxiliary switching-in device that shoves of no-load transformer - Google Patents
A kind of micro- auxiliary switching-in device that shoves of no-load transformer Download PDFInfo
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- CN208142828U CN208142828U CN201820510244.8U CN201820510244U CN208142828U CN 208142828 U CN208142828 U CN 208142828U CN 201820510244 U CN201820510244 U CN 201820510244U CN 208142828 U CN208142828 U CN 208142828U
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- pyrogenic process
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- incoming cables
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Abstract
The utility model relates to the micro- auxiliary switching-in devices that shoves of no-load transformer, including pyrogenic process clearance G PA, its end of incoming cables is connected with device end of incoming cables AL1, its leading-out terminal is connected with device leading-out terminal AL2, its trigger electrode is connected with one end end c of transformer T3 secondary coil, the leading-out terminal of the other end d termination pyrogenic process clearance G PA of transformer T3 secondary coil；The input terminal of transformer T1 is connected with the end of incoming cables of pyrogenic process clearance G PA, and output end is connected with the first connecting terminal of controller；The input terminal of transformer T2 is connected with the leading-out terminal of pyrogenic process clearance G PA, and output end is connected with the second connecting terminal of controller；The end of incoming cables of controllable silicon SCR is connected with the end of incoming cables of capacitor C, and the leading-out terminal of controllable silicon SCR is connected with one end end a of transformer T3 primary coil, and the leading-out terminal of capacitor C is connected with the end other end b of transformer T3 primary coil.The utility model has many advantages, such as that safe and reliable, combined floodgate precision is high, effectively solves the influence that excitation surge current generates the power quality of transformer itself and power grid.
Description
Technical field
The utility model relates to transformer excitation flow suppression technology field, especially a kind of no-load transformer is micro- shove it is auxiliary
Help closing device.
Background technique
Transformer will generate very big combined floodgate excitation surge current, can reach rated current 6~8 when unloaded or underloading is closed a floodgate
Times, it can reach more than ten times when serious.Excitation surge current is as follows to the harm of power grid：1. transformer coil generates very big electric power,
It is possible that the connection and coil that can destroy between coil and terminal are coupled；2. protective relaying maloperation is caused to make；3. to the electricity of power grid
It can quality generation very detrimental effect.
Currently, there are mainly three types of transformer excitation flow suppressing methods：1. transformer timesharing reclosing phase by phase angle controls；2. leading to
The method of excessive impedance switching inhibits the appearance shoved；3. excitation surge current and inside event by identification transformer during no-load closing
The wave character of short circuit current when barrier eliminates the influence shoved to tranformer protection movement.These three methods exist brighter
Aobvious disadvantage：1. the defect of transformer timesharing reclosing phase by phase angle control is as follows：A, current power operation regulation forbids this meeting
The timesharing split-phase of open-phase operation is caused to operate；B, high to the required precision of line-breaker combined floodgate；C, pre-arcing can not solve；②
Big impedance operation/cutting method increases the complexity of equipment investment expense and operation；3. passing through the excitation of identification transformer during no-load closing
It shoves as follows with the defect of the wave character of short circuit current when internal fault：A, the error of identification is affected by various factors,
Difficulty with physics and mathematical method identification excitation surge current is quite big；B, " hide and shove " pollution to power grid and electrical equipment
Destructiveness still exists.
Utility model content
The excitation surge current occurred when the purpose of this utility model is to provide a kind of by Transformer Close decreases below volume
Constant current is closed a floodgate by timesharing individual-phase control pyrogenic process clearance G PA, does not close in system circuit breaker contact or pre-arcing premise is leading
Logical, combined floodgate precision can effectively solve the influence of power quality generation of the excitation surge current to transformer itself and power grid at us grades
The micro- auxiliary switching-in device that shoves of no-load transformer.
To achieve the above object, the utility model uses following technical scheme：A kind of micro- auxiliary of shoving of no-load transformer
Closing device, including for auxiliary system breaker closing pyrogenic process clearance G PA, for system voltage signal to be passed to control
The transformer T1 of device, it the transformer T2 for voltage signal when system circuit breaker separating brake to be passed to controller, is used to trigger fire
The transformer T3 of method clearance G PA, in quick release capacitor C store electric energy controllable silicon SCR, for quickly calculating change
When depressor separating brake the remanent magnetism of each phase and for receive system circuit breaker close a floodgate order after timesharing individual-phase control pyrogenic process clearance G PA close
The controller of lock；The end of incoming cables of the pyrogenic process clearance G PA is connected with device end of incoming cables AL1, the leading-out terminal and dress of pyrogenic process clearance G PA
It sets leading-out terminal AL2 to be connected, the trigger electrode of pyrogenic process clearance G PA is connected with one end end c of transformer T3 secondary coil, transformer T3 pair
The leading-out terminal of the other end d termination pyrogenic process clearance G PA of sideline circle；The input terminal of the transformer T1 and pyrogenic process clearance G PA into
Line end is connected, and the output end of transformer T1 is connected with the first connecting terminal of controller, the input terminal and fire of the transformer T2
The leading-out terminal of method clearance G PA is connected, and the output end of transformer T2 is connected with the second connecting terminal of controller；It is described silicon-controlled
The end of incoming cables of SCR is connected with the end of incoming cables of capacitor C, the leading-out terminal of controllable silicon SCR and one end end a of transformer T3 primary coil
It is connected, the leading-out terminal of capacitor C is connected with the end other end b of transformer T3 primary coil.
Described device end of incoming cables AL1 is connected with the end of incoming cables of system circuit breaker；Described device leading-out terminal AL2 and system are disconnected
The leading-out terminal of road device is connected.
As shown from the above technical solution, the beneficial effects of the utility model are：The utility model has safe and reliable, combined floodgate
The advantages that precision is high, by timesharing individual-phase control pyrogenic process clearance G PA close a floodgate, system circuit breaker contact do not close or pre-arcing before
Shorting advance effectively solves the influence that excitation surge current generates the power quality of transformer itself and power grid.
Detailed description of the invention
Fig. 1 is the electrical schematic diagram of the utility model.
Specific embodiment
As shown in Figure 1, a kind of micro- auxiliary switching-in device that shoves of no-load transformer, including it is used for auxiliary system breaker closing
Pyrogenic process clearance G PA, the transformer T1 for system voltage signal to be passed to controller, when being used for system circuit breaker separating brake
Voltage signal passes to the transformer T2 of controller, the transformer T3 for triggering pyrogenic process clearance G PA, for quick release capacitor
The controllable silicon SCR of storage electric energy in device C, for quickly calculating transformer separating brake when each phase remanent magnetism and for receiving system
The controller that timesharing individual-phase control pyrogenic process clearance G PA closes a floodgate after breaker closing order；The end of incoming cables of the pyrogenic process clearance G PA with
Device end of incoming cables AL1 is connected, and the leading-out terminal of pyrogenic process clearance G PA is connected with device leading-out terminal AL2, the trigger electrode of pyrogenic process clearance G PA
It is connected with one end end c of transformer T3 secondary coil, the other end d termination pyrogenic process clearance G PA's of transformer T3 secondary coil goes out
Line end；The input terminal of the transformer T1 is connected with the end of incoming cables of pyrogenic process clearance G PA, the output end of transformer T1 and controller
First connecting terminal is connected, and the input terminal of the transformer T2 is connected with the leading-out terminal of pyrogenic process clearance G PA, the output of transformer T2
End is connected with the second connecting terminal of controller；The end of incoming cables of the controllable silicon SCR is connected with the end of incoming cables of capacitor C, controllably
The leading-out terminal of silicon SCR is connected with one end end a of transformer T3 primary coil, the leading-out terminal and transformer T3 primary side line of capacitor C
The end other end b of circle is connected.
Described device end of incoming cables AL1 is connected with the end of incoming cables of system circuit breaker；Described device leading-out terminal AL2 and system are disconnected
The leading-out terminal of road device is connected.
The working principle of the utility model is as follows：After controller is for receiving system circuit breaker combined floodgate order, by dividing
When individual-phase control pyrogenic process clearance G PA close a floodgate, system circuit breaker contact do not close or pre-arcing before shorting advance, effectively solve encourage
The influence that magnetic shoves to the generation of the power quality of transformer itself and power grid
In conclusion the utility model has many advantages, such as that safe and reliable, combined floodgate precision is high, pass through timesharing individual-phase control pyrogenic process
Clearance G PA close a floodgate, system circuit breaker contact do not close or pre-arcing before shorting advance, effectively solve excitation surge current to transformer
The influence that the power quality of itself and power grid generates.
Claims (2)
1. a kind of micro- auxiliary switching-in device that shoves of no-load transformer, it is characterised in that：Including being used for auxiliary system breaker closing
Pyrogenic process clearance G PA, the transformer T1 for system voltage signal to be passed to controller, when being used for system circuit breaker separating brake
Voltage signal passes to the transformer T2 of controller, the transformer T3 for triggering pyrogenic process clearance G PA, for quick release capacitor
The controllable silicon SCR of storage electric energy in device C, for quickly calculating transformer separating brake when each phase remanent magnetism and for receiving system
The controller that timesharing individual-phase control pyrogenic process clearance G PA closes a floodgate after breaker closing order；The end of incoming cables of the pyrogenic process clearance G PA with
Device end of incoming cables AL1 is connected, and the leading-out terminal of pyrogenic process clearance G PA is connected with device leading-out terminal AL2, the trigger electrode of pyrogenic process clearance G PA
It is connected with one end end c of transformer T3 secondary coil, the other end d termination pyrogenic process clearance G PA's of transformer T3 secondary coil goes out
Line end；The input terminal of the transformer T1 is connected with the end of incoming cables of pyrogenic process clearance G PA, the output end of transformer T1 and controller
First connecting terminal is connected, and the input terminal of the transformer T2 is connected with the leading-out terminal of pyrogenic process clearance G PA, the output of transformer T2
End is connected with the second connecting terminal of controller；The end of incoming cables of the controllable silicon SCR is connected with the end of incoming cables of capacitor C, controllably
The leading-out terminal of silicon SCR is connected with one end end a of transformer T3 primary coil, the leading-out terminal and transformer T3 primary side line of capacitor C
The end other end b of circle is connected.
2. the micro- auxiliary switching-in device that shoves of no-load transformer according to claim 1, it is characterised in that：Described device inlet wire
End AL1 is connected with the end of incoming cables of system circuit breaker；Described device leading-out terminal AL2 is connected with the leading-out terminal of system circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820510244.8U CN208142828U (en) | 2018-04-11 | 2018-04-11 | A kind of micro- auxiliary switching-in device that shoves of no-load transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820510244.8U CN208142828U (en) | 2018-04-11 | 2018-04-11 | A kind of micro- auxiliary switching-in device that shoves of no-load transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208142828U true CN208142828U (en) | 2018-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820510244.8U Active CN208142828U (en) | 2018-04-11 | 2018-04-11 | A kind of micro- auxiliary switching-in device that shoves of no-load transformer |
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| CN (1) | CN208142828U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110060857A (en) * | 2018-11-29 | 2019-07-26 | 合肥工业大学 | A kind of power transformer that can eliminate excitation surge current and its application method |
| CN111541230A (en) * | 2020-04-20 | 2020-08-14 | 国网新疆电力有限公司塔城供电公司 | Inrush current overvoltage treatment device and method |
-
2018
- 2018-04-11 CN CN201820510244.8U patent/CN208142828U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110060857A (en) * | 2018-11-29 | 2019-07-26 | 合肥工业大学 | A kind of power transformer that can eliminate excitation surge current and its application method |
| CN111541230A (en) * | 2020-04-20 | 2020-08-14 | 国网新疆电力有限公司塔城供电公司 | Inrush current overvoltage treatment device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221012 Address after: 230601 2604, Office Building D, Plot E3, Central City, No. 12227, Fanhua Avenue, Hefei Economic and Technological Development Zone, Anhui Province Patentee after: Anhui Kaili Intelligent Technology Co.,Ltd. Address before: Room 402, Building 14, Wanzhen Xiaoyaoyuan Fengyuan, No. 49, Taihu East Road, Baohe District, Hefei City, Anhui Province, 230041 Patentee before: Wang Yan |
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| TR01 | Transfer of patent right |