CN108306268A - 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
- Publication number
- CN108306268A CN108306268A CN201810322019.6A CN201810322019A CN108306268A CN 108306268 A CN108306268 A CN 108306268A CN 201810322019 A CN201810322019 A CN 201810322019A CN 108306268 A CN108306268 A CN 108306268A
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- Prior art keywords
- transformer
- leading
- pyrogenic process
- out terminal
- incoming cables
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Links
- 238000000034 method Methods 0.000 claims abstract description 39
- 230000001698 pyrogenic effect Effects 0.000 claims abstract description 35
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 11
- 239000010703 silicon Substances 0.000 claims abstract description 11
- 239000003990 capacitor Substances 0.000 claims abstract description 9
- 230000005389 magnetism Effects 0.000 claims description 3
- 230000005284 excitation Effects 0.000 abstract description 13
- 230000007547 defect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012067 mathematical method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/001—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection limiting speed of change of electric quantities, e.g. soft switching on or off
- H02H9/002—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection limiting speed of change of electric quantities, e.g. soft switching on or off limiting inrush current on switching on of inductive loads subjected to remanence, e.g. transformers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The present invention 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 ends c of transformer T3 secondary coils, the leading-out terminal of the other end d termination pyrogenic process clearance Gs PA of transformer T3 secondary coils；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 ends a of transformer T3 primary coils, and the leading-out terminal of capacitor C is connected with the ends other end b of transformer T3 primary coils.The present invention 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 present invention relates to transformer excitation flow suppression technology field, the micro- auxiliary of shoving of especially a kind of no-load transformer is closed
Brake gear.
Background technology
Transformer will generate prodigious combined floodgate excitation surge current, and can reach rated current 6~8 when unloaded or underloading is closed a floodgate
Times, more than ten times are can reach when serious.Excitation surge current is as follows to the harm of power grid：1. transformer coil generates prodigious 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. by the excitation surge current and the inside event that identify transformer during no-load closing
The wave character of short circuit current when barrier eliminates the influence acted to tranformer protection of shoving.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 equipment investment expense and the complexity of operation；3. by the excitation for recognizing 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,
Identify that the difficulty of excitation surge current is quite big with physics and mathematical method；B, " hide and shove " pollution to power grid and electrical equipment
Destructiveness still exists.
Invention content
The excitation surge current occurred when the purpose of the present invention is to provide a kind of by Transformer Close decreases below specified electricity
Stream, 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,
Combined floodgate precision can effectively solve the zero load for the influence that excitation surge current generates the power quality of transformer itself and power grid at us grades
The micro- auxiliary switching-in device that shoves of transformer.
To achieve the above object, present invention employs following technical schemes：A kind of micro- auxiliary switching-in that shoves of no-load transformer
Device includes for the pyrogenic process clearance G PA of auxiliary system breaker closing, for system voltage signal to be passed to controller
Transformer T1, the transformer T2 for voltage signal when system circuit breaker separating brake to be passed to controller, for triggering between pyrogenic process
The transformer T3 of gap GPA, in quick release capacitor C store electric energy controllable silicon SCR, for quickly calculating transformer
The remanent magnetism of each phase and close a floodgate what timesharing individual-phase control pyrogenic process clearance G PA after order closed a floodgate for receiving system circuit breaker when separating brake
Controller；The end of incoming cables of the pyrogenic process clearance G PA is connected with device end of incoming cables AL1, and the leading-out terminal of pyrogenic process clearance G PA goes out with device
Line end AL2 is connected, and the trigger electrode of pyrogenic process clearance G PA is connected with one end ends c of transformer T3 secondary coils, transformer T3 pairs sideline
The leading-out terminal of the other end d termination pyrogenic process clearance Gs PA of circle；The end of incoming cables of the input terminal and pyrogenic process clearance G PA of the transformer T1
It is connected, the output end of transformer T1 is connected with the first connecting terminal of controller, between the input terminal and pyrogenic process of the transformer T2
The leading-out terminal of gap GPA is connected, and the output end of transformer T2 is connected with the second connecting terminal of controller；The controllable silicon SCR
End of incoming cables 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 ends a of transformer T3 primary coils,
The leading-out terminal of capacitor C is connected with the ends other end b of transformer T3 primary coils.
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 is disconnected with system
The leading-out terminal of road device is connected.
As shown from the above technical solution, beneficial effects of the present invention are：The present invention has safe and reliable, combined floodgate precision height etc.
Advantage is closed a floodgate by timesharing individual-phase control pyrogenic process clearance G PA, is not closed in system circuit breaker contact or pre-arcing premise is leading
It is logical, effectively solve the influence that excitation surge current generates the power quality of transformer itself and power grid.
Description of the drawings
Fig. 1 is the electrical schematic diagram of the present invention.
Specific implementation mode
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, for by system circuit breaker separating brake when
Voltage signal passes to the transformer T2 of controller, the transformer T3 for triggering pyrogenic process clearance G PA, is used for quick release capacitance
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 ends c of transformer T3 secondary coils, the other end d termination pyrogenic process clearance G PA's of transformer T3 secondary coils 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 ends a of transformer T3 primary coils, leading-out terminal and the transformer T3 primary side lines of capacitor C
The ends other end b of circle are 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 is disconnected with system
The leading-out terminal of road device is connected.
Working principle of the present invention is as follows：After controller is for receiving system circuit breaker combined floodgate order, pass through timesharing point
Phase control pyrogenic process clearance G PA closes a floodgate, system circuit breaker contact do not close or pre-arcing before shorting advance, effectively solve excitation and gush
Flow the influence generated to the power quality of transformer itself and power grid
In conclusion the present invention 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 itself and
The influence that the power quality of 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, for by system circuit breaker separating brake when
Voltage signal passes to the transformer T2 of controller, the transformer T3 for triggering pyrogenic process clearance G PA, is used for quick release capacitance
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 ends c of transformer T3 secondary coils, the other end d termination pyrogenic process clearance G PA's of transformer T3 secondary coils 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 ends a of transformer T3 primary coils, leading-out terminal and the transformer T3 primary side lines of capacitor C
The ends other end b of circle are 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 |
|---|---|---|---|
| CN201810322019.6A CN108306268A (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 |
|---|---|---|---|
| CN201810322019.6A CN108306268A (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 |
|---|---|
| CN108306268A true CN108306268A (en) | 2018-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810322019.6A Pending CN108306268A (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) | CN108306268A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994551A (en) * | 2019-11-26 | 2020-04-10 | 国网宁夏电力有限公司电力科学研究院 | Excitation inrush current suppression device and method for transformer |
| 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 |
| CN112737555A (en) * | 2020-12-30 | 2021-04-30 | 安徽徽电科技股份有限公司 | High pulse trigger circuit and device for vacuum spark gap |
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| JPH06186309A (en) * | 1992-12-17 | 1994-07-08 | Toshiba Corp | Interruption test circuit for switch |
| CN1902795A (en) * | 2003-12-30 | 2007-01-24 | 苏勒过压保护公司 | Device for protection against voltage surges with parallel simultaneously triggered spark-gaps |
| CN101075498A (en) * | 2007-04-13 | 2007-11-21 | 中国南车集团株洲电力机车研究所 | Method and device for inhibiting transformer no-load switchon surge |
| US20120293896A1 (en) * | 2010-04-08 | 2012-11-22 | Tomohito Mori | Inrush-current suppressing device and inrush-current suppressing method |
| CN203773822U (en) * | 2014-04-02 | 2014-08-13 | 曲克玉 | Teaching aid-used lightning formation demonstration device |
| CN104701853A (en) * | 2014-12-31 | 2015-06-10 | 国家电网公司 | 10kV distribution network serial compensation device and control method |
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2018
- 2018-04-11 CN CN201810322019.6A patent/CN108306268A/en active Pending
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| JPH06186309A (en) * | 1992-12-17 | 1994-07-08 | Toshiba Corp | Interruption test circuit for switch |
| CN1902795A (en) * | 2003-12-30 | 2007-01-24 | 苏勒过压保护公司 | Device for protection against voltage surges with parallel simultaneously triggered spark-gaps |
| CN101075498A (en) * | 2007-04-13 | 2007-11-21 | 中国南车集团株洲电力机车研究所 | Method and device for inhibiting transformer no-load switchon surge |
| US20120293896A1 (en) * | 2010-04-08 | 2012-11-22 | Tomohito Mori | Inrush-current suppressing device and inrush-current suppressing method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994551A (en) * | 2019-11-26 | 2020-04-10 | 国网宁夏电力有限公司电力科学研究院 | Excitation inrush current suppression device and method for transformer |
| 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 |
| CN111541230B (en) * | 2020-04-20 | 2022-04-19 | 国网新疆电力有限公司塔城供电公司 | Inrush current overvoltage treatment device and method |
| CN112737555A (en) * | 2020-12-30 | 2021-04-30 | 安徽徽电科技股份有限公司 | High pulse trigger circuit and device for vacuum spark gap |
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Application publication date: 20180720 |
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