CN1706015A - Load tap changer with motor drive - Google Patents
Load tap changer with motor drive Download PDFInfo
- Publication number
- CN1706015A CN1706015A CNA2004800009477A CN200480000947A CN1706015A CN 1706015 A CN1706015 A CN 1706015A CN A2004800009477 A CNA2004800009477 A CN A2004800009477A CN 200480000947 A CN200480000947 A CN 200480000947A CN 1706015 A CN1706015 A CN 1706015A
- Authority
- CN
- China
- Prior art keywords
- motor
- switch
- load
- cam
- load transducer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/36—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having only two operative positions, e.g. relatively displaced by 180 degrees
- H01H19/38—Change-over switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H2009/0061—Monitoring tap change switching devices
Abstract
The invention relates to a load tap changer with a motor drive, wherein the necessary monitoring and restart functions are carried out by means of inductive proximity sensors which are arranged on the load transfer switch for position detection thereof, said sensors interacting with separate cam switches which are actuated by cams according to a specific sequence. According to the invention, the result involves actuation of a plausibility check for each change and a motor protection circuit breaker is actuated if deviation occurs from a normal state.
Description
The present invention relates to a kind of load tap changer with motor driver.
This company's publication " Laststufenschalter AVT-Betriebsanleitung (load tap changer AVT operating guidance) " that is used for the load tap changer of internal unit by the applicant, printed copy BA 163/01de, 0802/500 is known, and it is used to regulate the load transformation ratio of dry-type transformer down.This known load tap changer is according to the principle work of resistance switching fast.It has one and is used for the selector that the new tapping that will switch to is selected on non-loaded ground in advance, and a load transducer that is used for follow-up actual switching.Use vacuum switch battery (Vakuumschaltzellen) as the load transfer contact.The motor driver that is used for starting switching in this case is integrated into the housing of load tap changer.
The standard of Shi Yonging herein, as IEC 60214 and VDE 0532, regulation: motor driver has the direction of rotation monitoring, and comprises that guaranteeing automatic termination has begun to a direction device for switching.Said process must be a prerequisite with the information that obtains about direction of rotation.Realize for guaranteeing this requirement, in known load tap changer, be provided with the bistable relay (lock current relay) that a rotating field check relay that is used to monitor direction of rotation and are used for the switching that automatic termination begun.But there are two aspect shortcomings in above-mentioned electronic component: the one, cost an arm and a leg, and the 2nd, under the rigorous environment condition, be easy to generate problem.
Therefore task of the present invention provides load tap changer a kind of type of being mentioned hereinbefore, that have motor driver, wherein can realize above-mentioned safety requirements in simple, economic mode.
This task realizes by the load tap changer with the described feature of claim.
Load tap changer among the present invention has different new features, and these new features make up mutually and satisfied above-mentioned safety requirements.Wherein, direction of rotation monitoring and restarting by existing substantially report information of motor driver derive out.What especially have advantage is: no longer need any additional mechanical organ; Above-mentioned rotating field check relay and bistable relay can save, and need not to be substituted.
For realizing above-mentioned target, advised following feature:
At first, the load transducer of load tap changer is provided with inductive range sensor, to detect its position.
In addition, being provided with on the coupling bar between motor driver and the load tap changer is used for threading off monitors the device of (Entlinkungs ü berwachung), and they have cam switch.
In addition, provide the device that is used for motor driver is made the mechanical movement report information; It is selecting directly to obtain described report information on the driver by means of the cam track of an independent of direction.
At last, provide the electric device that is used for (known) motor protecter is made operational report information.
With way of example the present invention is described in more detail below.As shown in the figure:
Fig. 1 shows the structure of inductive range sensor,
Fig. 2 shows the device of the monitoring that is used on the coupling bar between motor driver and the load tap changer to thread off,
Fig. 3 shows the device that is used to make the mechanical movement report information on the selection driver,
Fig. 4 shows the complete circuit of conduct according to the motor driver of a building block of load tap changer of the present invention,
Fig. 5 shows the circuit details figure with safety device,
Fig. 6 shows the handoff procedure schematic diagram that switches to another (adjacent) tapping from a tapping of dry-type transformer.
How to have illustrated among Fig. 1 by the inductive range sensor S70 on the load transducer, S71 obtains the position of load transducer.Wherein generate a direct/indirect report information, this report information doubles by the auxiliary protection device K13 and the K14 that will further describe hereinafter.Before a finishing switching, load transducer self is switched about 20 degree angles.And in whole embodiment, begin for the whole anglec of rotation of each load transfer with 360 degree.
Fig. 2 shows in detail the device of the monitoring that is used to thread off.On the coupling bar between motor driver and the diversity switch, be provided with a cam track for this reason, as adding among the figure shown in the blackboard branch, this cam track is to direction expansion 130 degree, make correspondingly cam switch S23 and S24 and after switching beginning, open 25 degree, perhaps before finishing switching, close 25 degree---according to separately actual setting and controlled rotation direction---.
Fig. 3 shows the device of the machine operation report that is used for motor driver.There is shown one and come the cam track of work in the mode relevant with direction, it is set directly at selects on the driver.In this case, cam switch S13 opens 35 degree after switching beginning, perhaps closes 35 degree before EOC again.Have only the motion of selector when the anglec of rotation is spent greater than 35 just to begin automatically.
Fig. 4 shows according to the present invention the circuit diagram of drawing, and comprises also among the figure in addition that other are known but is necessary building block for the explanation allomeric function.This is equally applicable to the actual monitored unit shown in Fig. 5.As shown in Figure 4 and Figure 5:
F2 arc monitor unit
The H1 signal lamp
The K1 motor protecter
The K2 motor protecter
The auxiliary protection device of K13 range sensor S70
The auxiliary protection device of K14 range sensor S71
K20 step switch relay
The K29 electrotimer
The M1 motor
The Q1 motor protecting switch
A S3 high position/low-side switch
S4 is used for the limit switch of K1
S5 is used for the limit switch of K2
S8 A and B: safety switch
The S13 cam switch
The S23 cam switch
The S24 cam switch
S38 potentiometer contact
The S70 range sensor
The S71 range sensor
X... terminal
To state again the mode of operation with load tap changer of motor driver according to the present invention below, and highlight the safety means that specification begins described specification requirement that satisfy of this load tap changer.After in control motor protecter K1 and K2 one carried out work, the motor M 1 in the motor driver began to start.After opening 25 degree, cam switch S23/S24 exchanges position (referring to Fig. 2) each other.When switching beginning back 35 was spent, another cam switch S13 restarts device/direction of rotation supervising device with switching made its startup (referring to Fig. 3).When cam switch S13 starts; the auxiliary protection device K13/K14 (referring to Fig. 1) that load transducer and inductive range sensor S70/S71 and being used to makes the report signal multiplication is switch not; the cam switch S23 that monitoring is simultaneously threaded off, S24 (referring to Fig. 2) be switch not also.
During this period of time inquire following operating state:
The load transducer position is (K13 starts, and K14 does not start) evenly
Traffic direction is (K2 starts, and K1 does not start, and S24 starts, and S23 does not start) to the right
The load transducer position is (K13 starts, and K14 does not start) evenly
Traffic direction is (K1 starts, and K2 does not start, and S23 starts, and S24 does not start) left
Load transducer position inhomogeneous (K14 starts, and K13 does not start)
Traffic direction is (K2 starts, and K1 does not start, and S23 starts, and S24 does not start) to the right
Load transducer position inhomogeneous (K14 starts, and K13 does not start)
Traffic direction is (K1 starts, and K2 does not start, and S24 starts, and S23 does not start) left
According to above-mentioned ordering rule, all possible operating state all can be queried to.Inquiry itself obtains by the electric misconnection of above mentioned report information contact.These contacts directly act on motor protecting switch Q1 (direction of rotation monitoring) or motor protecter K1, K2 (restarting device).
To switching flow be described in detail again according to circuit diagram shown in Figure 4 below.The principle that control procedure itself is switched according to stepping is come work, and meets the requirement of IEC 60214.Two motor protecter K1, K2 control motor are respectively to different direction of rotation runnings, and motor protecting switch Q1 protection motor is avoided transshipping, and the trip coil that is used to cut off circuit is provided.All angle that adopts below explanations all relate to the complete anglec of rotation that at every turn switches to 360 degree.
A) the load transducer position is inhomogeneous, to the right control
Load transducer is in uneven position, S71 operation, K14 pull-up, S23 operation.After control motor protecter K2, motor M 1 turns round to " right side " rotation direction.After opening 25 degree, the cam switch of monitoring that is used to thread off arrives assigned address, and cam switch all will keep this position at whole testing stage (35 degree are to 325 degree).According to shown in Figure 2, state is constant in this case; S23 keeps operation, and S24 does not move.Cam switch S13 (Fig. 3) brings into operation after opening 35 degree, and starts check and restart the stage.
For cam switch S13 (starting) and the circuit-opening contacts (starting) of auxiliary protection device K13 that are used to make the position message information multiplication of load transducer, on cam switch S24 (starting), be added with voltage.If be not activated owing to correct direction of rotation S24, then voltage will be applied to the coil of the motor protecter K2 that is used for " right side " rotation direction; Guarantee to restart until cam switch S13 and discharge.If S24 for example is activated owing to the wrong rotating field that is connected with binding post, will also discharge motor protecting switch Q1 by opening cam switch S13 by the auxiliary contact of motor protecter K2:53-54
B) the load transducer position is inhomogeneous, left control
Load transducer is in uneven position, S71 operation, K14 pull-up, S23 operation.Motor M 1 turns round to " left side " traffic direction after control motor protecter K1.After opening 25 degree, the cam switch of monitoring that is used to thread off arrives assigned address, and cam switch all will keep this position at whole testing stage (35 degree are to 325 degree).According to shown in Figure 2, the S24 operation; S23 falls back.Cam switch S13 (Fig. 3) brings into operation after opening 35 degree, and starts check and restart the stage.
For cam switch S13 (starting) and the circuit-opening contacts (starting) of auxiliary protection device K13 that are used to make the position message information multiplication of load transducer, on cam switch S24 (starting), be added with voltage.If owing to correct direction of rotation S24 is activated, then voltage will be applied to the coil of the motor protecter K1 that is used for " left side " rotation direction; Guarantee to restart until cam switch S13 and discharge.If S24 for example is not activated owing to the wrong rotating field that is connected with binding post, will also discharge motor protecting switch Q1 by opening cam switch S13 by the auxiliary contact of motor protecter K1:53-54.
C) the load transducer position is even, to the right control
Load transducer is in uniform position, S70 operation, K13 pull-up, S24 operation.Motor M 1 turns round to " right side " traffic direction after starter motor protector K2.After opening 25 degree, the cam switch of monitoring that is used to thread off arrives assigned address, and cam switch all will keep this position at whole testing stage (35 degree are to 325 degree).According to shown in Figure 2, state is constant in this case; S24 keeps operation, and S23 does not move.Cam switch S13 (Fig. 3) brings into operation after opening 35 degree, and starts check and restart the stage.
For cam switch S13 (starting) and the circuit-opening contacts (starting) of auxiliary protection device K14 that are used to make the position message information multiplication of load transducer, on cam switch S23 (starting), be added with voltage.If be not activated owing to correct direction of rotation S23, then voltage will be added in the coil of the motor protecter K2 that is used for " left side " rotation direction; Guarantee to restart until cam switch S13 and discharge.If S23 for example is activated owing to the wrong rotating field that is connected with binding post, will also discharge motor protecting switch Q1 by opening cam switch S13 by the auxiliary contact of motor protecter K2:53-54.
D) the load transducer position is even, left control
Load transducer is in uniform position, S70 operation, K13 pull-up, S24 operation.Motor M 1 turns round to " right side " traffic direction after starter motor protector K1.After opening 25 degree, the cam switch of monitoring that is used to thread off arrives assigned address, and cam switch all will keep this position at whole testing stage (35 degree are to 325 degree).According to shown in Figure 2, the S23 operation; S24 falls back.Cam switch S13 (Fig. 3) brings into operation after opening 35 degree, and starts check and restart the stage.
For cam switch S13 (starting) and the auxiliary protection device K14 opening device (starting) that is used to make the position message information multiplication of load transducer, on cam switch S23 (starting), be added with voltage.If because correct direction of rotation S23 is activated, then voltage will be applied to the coil of the motor protecter K1 that is used for " left side " rotation direction; Guarantee to restart until cam switch S13 and discharge.If S23 for example is not activated owing to the wrong rotating field that is connected with binding post, will also discharge motor protecting switch Q1 by opening cam switch S13 by the auxiliary contact of motor protecter K1:53-54.
Because all contacts of cam switch S23 and S24 are all connected, the mistake of monitoring and restart facility will be automatically recognized, and cause motor protecting switch Q1 to discharge.If make a mistake when each position of identification load transducer, then two monitoring loops will be in starting state on electric, perhaps be in not starting state; This breeding situation all will cause motor protecting switch Q1 to discharge.
Claims (1)
1. the load tap changer that has a motor driver; be used for carrying out continual conversion between each tapping at an adjustable transformer under the on-load situation; wherein be provided with one and be used for selector and load transducer of under the on-load situation, carrying out actual converted that new tapping is selected on non-loaded ground in advance; wherein selector and load transducer are handled by a coupling bar of motor driver jointly; so that motor driver is controlled the selection driver of selector on the one hand; pull-up is carried out the follow-up power memory of controlling to load transducer on the other hand; wherein motor driver has a motor; this motor can be activated with direction of rotation by means of a motor protecter respectively relevantly; and in the circuit of this motor, be provided with an electric motor protecting relay; it is characterized in that
On load transducer, be provided with inductive range sensor (S70, S71), each position of this sensor load transducer;
On coupling bar, be provided with one with the cam track of direction of rotation related work and two and the corresponding cam switch of this cam track (S23, S24);
In the cam track of selecting directly to be provided with on the driver another one and irrelevant to rotation direction work, this cam track is corresponding to another cam switch (S13);
And be provided with and be used for range sensor (S70; the electric device that normal condition when S71), the actual switch position that obtains respectively of cam switch (S23.S24) and another cam switch (S13) and load tap changer are operated at every turn compares; make when at least one on off state in the above-mentioned on off state has departed from normal operating conditions, can starter motor protection switch (Q1).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10344142A DE10344142B3 (en) | 2003-09-24 | 2003-09-24 | Motorized load stepping switch for transformer using comparison of position signals from proximity switches and cam switches for operation of protection switch for electric drive motor |
| DE10344142.5 | 2003-09-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1706015A true CN1706015A (en) | 2005-12-07 |
| CN100466128C CN100466128C (en) | 2009-03-04 |
Family
ID=34042281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800009477A Expired - Fee Related CN100466128C (en) | 2003-09-24 | 2004-08-12 | Load tap changer with motor drive |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1665306B1 (en) |
| KR (1) | KR20070083239A (en) |
| CN (1) | CN100466128C (en) |
| AT (1) | ATE377835T1 (en) |
| DE (2) | DE10344142B3 (en) |
| HK (1) | HK1091672A1 (en) |
| WO (1) | WO2005041230A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100905525B1 (en) * | 2007-08-03 | 2009-07-01 | 주식회사 비엠일렉텍 | Cam contactor for automatic tap converting in accordance with commercial voltage fluctuation and charger comprising the same |
| DE102011118488A1 (en) * | 2011-11-11 | 2013-05-16 | Maschinenfabrik Reinhausen Gmbh | Motor drive for tap changer |
| DE102012103736A1 (en) * | 2012-04-27 | 2013-10-31 | Maschinenfabrik Reinhausen Gmbh | Method for monitoring the operation of a tap changer |
| KR101525595B1 (en) * | 2015-03-09 | 2015-06-03 | 성진전력 주식회사 | Apparatus and method for controlling of on load tap changer |
| KR102459022B1 (en) * | 2020-07-20 | 2022-10-26 | 주식회사 원프레딕트 | Method for failure detection of OLTC(on load tab changer) and apparatus for performing the same |
| KR102219309B1 (en) | 2020-11-13 | 2021-02-24 | 한국에너지솔루션 주식회사 | Transformer Using Electric Power Distribution Smart OLTC |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3427530A (en) * | 1966-10-17 | 1969-02-11 | Allis Chalmers Mfg Co | Tap changing voltage regulator having means for selecting limits of tap changer motion |
| DE3801152A1 (en) * | 1988-01-16 | 1989-07-27 | Reinhausen Maschf Scheubeck | CONTACT ARRANGEMENT SITTING IN AN INSULATING WALL FOR STEPPERS OF STEPPING TRANSFORMERS |
| DE4016428C1 (en) * | 1990-05-22 | 1991-11-07 | Maschinenfabrik Reinhausen Gmbh, 8400 Regensburg, De | |
| DE4214431C3 (en) * | 1992-04-30 | 1996-08-14 | Reinhausen Maschf Scheubeck | Step switch with motor drive |
| DE29812855U1 (en) * | 1998-07-20 | 1998-10-01 | Abb Patent Gmbh, 68309 Mannheim | Drive and control unit for a three-phase switch |
| CN2413251Y (en) * | 2000-03-30 | 2001-01-03 | 张庆德 | Electrode salt-bath furnace with stepped current-limiting starting power supply |
| DE10016489C2 (en) * | 2000-04-01 | 2002-01-31 | Reinhausen Maschf Scheubeck | Method for controlling a motor drive for a tap changer and tap changer suitable for such a method |
| SE519492C2 (en) * | 2000-05-26 | 2003-03-04 | Abb Ab | Actuator and winding coupler including one |
| DE10062679C2 (en) * | 2000-12-15 | 2003-08-14 | Reinhausen Maschf Scheubeck | Step switch with switching monitoring |
-
2003
- 2003-09-24 DE DE10344142A patent/DE10344142B3/en not_active Expired - Fee Related
-
2004
- 2004-08-12 EP EP04764010A patent/EP1665306B1/en not_active Not-in-force
- 2004-08-12 CN CNB2004800009477A patent/CN100466128C/en not_active Expired - Fee Related
- 2004-08-12 KR KR1020057005006A patent/KR20070083239A/en not_active Application Discontinuation
- 2004-08-12 WO PCT/EP2004/009006 patent/WO2005041230A1/en active IP Right Grant
- 2004-08-12 AT AT04764010T patent/ATE377835T1/en not_active IP Right Cessation
- 2004-08-12 DE DE502004005453T patent/DE502004005453D1/en active Active
-
2006
- 2006-07-18 HK HK06108033A patent/HK1091672A1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE10344142B3 (en) | 2005-02-10 |
| EP1665306A1 (en) | 2006-06-07 |
| ATE377835T1 (en) | 2007-11-15 |
| EP1665306B1 (en) | 2007-11-07 |
| DE502004005453D1 (en) | 2007-12-20 |
| CN100466128C (en) | 2009-03-04 |
| KR20070083239A (en) | 2007-08-24 |
| WO2005041230A1 (en) | 2005-05-06 |
| HK1091672A1 (en) | 2007-01-26 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090304 Termination date: 20110812 |