EP2524385A1 - Method for measuring the switching time of an on-load tap changer and circuit for measuring switching time - Google Patents
Method for measuring the switching time of an on-load tap changer and circuit for measuring switching timeInfo
- Publication number
- EP2524385A1 EP2524385A1 EP10800700A EP10800700A EP2524385A1 EP 2524385 A1 EP2524385 A1 EP 2524385A1 EP 10800700 A EP10800700 A EP 10800700A EP 10800700 A EP10800700 A EP 10800700A EP 2524385 A1 EP2524385 A1 EP 2524385A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switching
- measuring
- load
- voltage
- tap
- 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
Links
Classifications
-
- 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
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/0062—Testing or measuring non-electrical properties of switches, e.g. contact velocity
-
- 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
-
- 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
- H01H9/0038—Tap change devices making use of vacuum switches
Definitions
- the invention relates to a method for measuring the chronological order of during the
- the invention further relates to a suitable circuit for such a method.
- non-volatile storage of the switch-specific sequence of the switching sequence takes place when the on-load tap-changer is switched over, subsequently a measuring circuit is connected between the respective sides of the electrical switches facing the movable switching elements. Subsequently, a switch of the
- the measuring circuit used consists of a series connection of a voltage source and the already mentioned measuring resistor as well as means for measuring the voltage which drops across this measuring resistor.
- On-load tap-changer of the type of a load selector suitable and designed as is also explained with reference to the figures 1 to 4 in the above-mentioned document.
- on-load tap-changer which has a separate selector for powerless preselection of the winding tap to be switched to, and, separately, a diverter switch for the actual uninterrupted switching of the load between the winding taps.
- the circuit of such an on-load tap-changer as manufactured and sold by the Applicant under the type designation VACUTAP® VR, is known from DE 10 2005 048 308 B3 and described in detail there in FIG. 8: The two sides of the diverter switch A and B are shown, between which the uninterrupted switching takes place.
- Contacts MCA and MCB are the respective permanent main contacts, one of which is closed in stationary operation and thus carries current.
- MSV designates a vacuum switching cell in the main switching branch, TTV a vacuum switching cell in the resistance branch, which has the additional switching resistance R.
- the acting as a main switching contact mechanical switching contact II is referred to as MTF
- acting as a resistance switching contact mechanical switching contact I is referred to as TTF.
- Y denotes the load derivation.
- the object of the invention is therefore also for on-load tap-changers of the type VACUTAP® VR and comparable devices specify a method that allows on site with simple means to make a switching time measurement during operation of the on-load tap-changer and to decide in the result, if this on-load tap-changer fully functional is.
- the object of the invention is, in turn, to provide a circuit with which such a method can be carried out in a simple manner.
- Figure 1 shows the circuit of a known on-load tap-changer VACUTAP® VR with
- FIG. 2 shows again a schematic representation of the measuring circuit according to the invention, a (known) switching sequence of the on-load tap-changer to which the measuring circuit according to the invention is to be connected
- FIG. 4 shows an oscillogram of the measuring circuit determined by means of the measuring circuit according to the invention
- Figure 5 shows the inventive method in the overall overview.
- Figure 1 shows the circuit of the known on-load tap changer described, more precisely, whose diverter switch, shown in bold lines.
- the connected invention
- Measuring circuit is shown with dashed lines.
- the measuring circuit has four connection points C, D, E, Y and three separate resistors R2, R3, R4.
- the first connection point C is between the mechanical switching element MTF and the
- Vacuum switching cell MSV of the tap changer connected. It leads via a first resistor R2 to a first voltage source U1, furthermore via a series connection of two further resistors R4 and R3 to a further voltage source U2.
- connection point D is connected between the mechanical switch TTF and the vacuum switching cell TTV of the on-load tap-changer and leads to the other side of the second voltage source U2.
- the further connection point E is between the vacuum switching cell TTV and the
- Switching resistor R of the on-load tap-changer is arranged and leads between the series connection of the two resistors R4 and R3.
- connection point Y is connected to the other side of the voltage source U1 and leads to the load derivation, i. H. the star point of the on-load tap-changer.
- a first measuring device U_R is provided between the connection points Y and E.
- a second measuring device U_R3 is provided.
- the two measuring devices U_R and U_R3 record the voltage curves over time.
- Figure 2 shows the measuring circuit according to the invention again only in a schematic representation.
- the on-load tap-changer is symbolized here only by a cylinder, arranged on the left in the picture. Shown are the connection points C, D, E, Y, which are electrically connected to the already explained points in Lastumschaiter.
- the connection point C leads via the first resistor R2 to the voltage source U1.
- the measuring point D leads to the positive pole of the voltage source U2, whose other side with the
- connection point E leads to the point between the resistors R3 and R4.
- connection point Y with the star point, d. H. the load derivation is connected leads to
- the two voltage sources U1, U2 are DC voltage sources with 24 V DC.
- U_R is connected between the connection points E and Y.
- U_R3 is connected in parallel to the resistor R3.
- the resistors R2 and R3 are particularly advantageously adapted to the value of the override resistance R of the diverter switch.
- a two-channel memory is used as an oscilloscope as a common voltage measuring device.
- this memory oscilloscope still a separate evaluation, for example, to Sol-st comparison of the determined switching sequence nachzuither.
- FIG. 3 shows the switching sequence of the known on-load tap-changer, which is to be measured or checked by the method according to the invention and by means of the measuring circuit according to the invention.
- the switching sequence can be seen when switching from level n to the adjacent level n + 1-d. H. a complete load switching.
- FIG. 4 shows a real recorded oscillogram of the measuring voltages recorded by means of the two measuring devices U_R and U_R3 in the case of a real load switching. It is shown here how the individual voltage edges of the recorded voltage curves the individual
- Times t1 ... t8 be assigned to the switching sequence.
- Switching elements TTF and TTV deviate from the desired course shown in Figure 3.
- FIG. 5 again shows a schematic representation of the complete method according to the invention. It begins with the non-volatile storage of the switch-specific order of the
- Switching sequence of the respective tap changer to be checked ie a switching sequence in which the switching times correspond to switch-specific setpoint values. It ends with the comparison, ie the assignment of the individual times of the actually measured switching sequence with these previously stored setpoints.
- a non-volatile storage of the switching-specific time sequence of the switching sequence d. H. the mechanical switching contacts (MTF; TTF) and the vacuum switching cells (MSV; TTV) which open and close successively when the diverter switch is switched over;
- MTF mechanical switching contacts
- MSV vacuum switching cells
- Measuring resistor (R3) during load switching is measured, i. the concrete chronological course of the first and the second applied or falling voltage (flanks) is detected,
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
- Measuring Fluid Pressure (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010004784 | 2010-01-16 | ||
PCT/EP2010/007562 WO2011085763A1 (en) | 2010-01-16 | 2010-12-11 | Method for measuring the switching time of an on-load tap changer and circuit for measuring switching time |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2524385A1 true EP2524385A1 (en) | 2012-11-21 |
EP2524385B1 EP2524385B1 (en) | 2013-10-23 |
Family
ID=43759908
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10800700.6A Not-in-force EP2524385B1 (en) | 2010-01-16 | 2010-12-11 | Method for measuring the switching time of an on-load tap changer and circuit for measuring switching time |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2524385B1 (en) |
ES (1) | ES2443155T3 (en) |
WO (1) | WO2011085763A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016001149A1 (en) * | 2014-07-02 | 2016-01-07 | Omicron Electronics Gmbh | Method and device for testing a tap changer of a transformer |
WO2016001151A1 (en) * | 2014-07-02 | 2016-01-07 | Omicron Electronics Gmbh | Method and device for testing a tap changer of a transformer |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT516004B1 (en) * | 2014-07-02 | 2017-04-15 | Omicron Electronics Gmbh | Method and device for testing a tap changer of a transformer |
CN108957308B (en) * | 2018-08-01 | 2021-03-16 | 河北科技师范学院 | On-load tap-changer body, off-line measuring method and measuring system for switching parameters |
DE102018119163A1 (en) * | 2018-08-07 | 2020-02-13 | Maschinenfabrik Reinhausen Gmbh | LOAD STEP SWITCH FOR UNINTERRUPTED SWITCHING BETWEEN WINDING TAPS OF A STEPPED TRANSFORMER AND STEPPED TRANSFORMER |
CN112630644B (en) * | 2020-12-15 | 2023-03-14 | 中国电力科学研究院有限公司 | Method and system for on-line monitoring on-load tap-changer switching program based on photoelectric signal |
CN113113261B (en) * | 2021-03-19 | 2022-09-27 | 北京航天控制仪器研究所 | Double-vacuum-tube reciprocating transition circuit of vacuum on-load tap-changer and switching control method thereof |
CN113985270B (en) * | 2021-11-02 | 2022-05-27 | 广东电网有限责任公司 | Method, system and medium for detecting switching time sequence of on-load tap-changer |
DE102022106774A1 (en) * | 2022-03-23 | 2023-09-28 | Maschinenfabrik Reinhausen Gmbh | CONDITION ANALYSIS OF A LOAD TAP SWITCH |
CN117434437B (en) * | 2023-12-14 | 2024-03-15 | 清华四川能源互联网研究院 | Transformer on-load tap-changer switching program analysis method |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19530776C1 (en) * | 1995-08-22 | 1996-12-12 | Reinhausen Maschf Scheubeck | Monitoring method for staged load switching device |
DE10352580B3 (en) * | 2003-11-11 | 2005-04-28 | Reinhausen Maschf Scheubeck | Stepping switch contact wear monitoring method e.g. for transformer step voltage regulator, with different equations used for calculation of switching currents and wear rates for each switching direction |
DE102004052316B3 (en) | 2004-10-28 | 2005-12-01 | Maschinenfabrik Reinhausen Gmbh | Switching method for measuring switch times on an on-load step switch attaches a test circuit to electric switch elements inside a step switch with a separate source of voltage |
DE102005048308B3 (en) | 2005-10-08 | 2006-11-23 | Maschinenfabrik Reinhausen Gmbh | Mechanical switch contact has pivotable contact housing mounted on insulating support via bearing with two parallel electrically connected contact fingers enclosing fixed contacts and mechanically connected to and actuated by pivot lever |
-
2010
- 2010-12-11 EP EP10800700.6A patent/EP2524385B1/en not_active Not-in-force
- 2010-12-11 ES ES10800700.6T patent/ES2443155T3/en active Active
- 2010-12-11 WO PCT/EP2010/007562 patent/WO2011085763A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2011085763A1 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016001149A1 (en) * | 2014-07-02 | 2016-01-07 | Omicron Electronics Gmbh | Method and device for testing a tap changer of a transformer |
WO2016001151A1 (en) * | 2014-07-02 | 2016-01-07 | Omicron Electronics Gmbh | Method and device for testing a tap changer of a transformer |
AU2015282646B2 (en) * | 2014-07-02 | 2017-09-28 | Omicron Electronics Gmbh | Method and device for testing a tap changer of a transformer |
AU2015282648B2 (en) * | 2014-07-02 | 2018-06-14 | Omicron Electronics Gmbh | Method and device for testing a tap changer of a transformer |
Also Published As
Publication number | Publication date |
---|---|
WO2011085763A1 (en) | 2011-07-21 |
ES2443155T3 (en) | 2014-02-18 |
EP2524385B1 (en) | 2013-10-23 |
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