WO2018148812A1 - Accumulateur d'énergie de ressort pour un commutateur de déviateur de puissance de changeur de prises en charge - Google Patents

Accumulateur d'énergie de ressort pour un commutateur de déviateur de puissance de changeur de prises en charge Download PDF

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Publication number
WO2018148812A1
WO2018148812A1 PCT/BG2018/000012 BG2018000012W WO2018148812A1 WO 2018148812 A1 WO2018148812 A1 WO 2018148812A1 BG 2018000012 W BG2018000012 W BG 2018000012W WO 2018148812 A1 WO2018148812 A1 WO 2018148812A1
Authority
WO
WIPO (PCT)
Prior art keywords
lever
spring
energy accumulator
switching
charging
Prior art date
Application number
PCT/BG2018/000012
Other languages
English (en)
Other versions
WO2018148812A4 (fr
Inventor
Toni Dragomirov GROZDANOV
Borislav Lyubenov VASILEV
Georgi Ivanov MANEV
Todor Pantaleev KOKEV
Original Assignee
Abb Bulgaria Eood
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Abb Bulgaria Eood filed Critical Abb Bulgaria Eood
Priority to KR1020197024882A priority Critical patent/KR102340423B1/ko
Priority to DE112018000857.6T priority patent/DE112018000857T5/de
Priority to CN201880011292.5A priority patent/CN110603619A/zh
Publication of WO2018148812A1 publication Critical patent/WO2018148812A1/fr
Publication of WO2018148812A4 publication Critical patent/WO2018148812A4/fr

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
    • H01H9/0027—Operating mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3052—Linear spring motors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
    • H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
    • 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 spring-energy accumulator is used to realize the switching of the contact system of a power diverter switch for an on-load tap changer.
  • the on-load tap changers are embedded in power transformers and used to regulate their high voltage under load, i.e. without interruption of the power supply to the consumers.
  • a spring energy storage device (1) comprising two tensioning spring operating in tensile mode.
  • One nozzle of these springs is connected to the end of a lever mounted on a bush located along the axis of a power diverter switch. The other end is connected by a slider with one end of a switching lever, the other end of which is held in both end positions by a locking mechanism.
  • An axle at the end of the rotatable central lever, to which the one end of the springs . is attached, has a stem connected to the lever. This lever is rotated by a hinged four-stroke mechanism, mounted on the bottom of an oil container. Tensioning of the springs is done in this way.
  • Another spring-energy accumulator (3) which takes up less space, because the movement of the springs is linear. It contains a carrying housing, at the ends of which two parallel axes are attached. There are two sleds which slides along the edges of which two switching springs, operating in pressure mode are mounted. The springs are loaded from a shaft with an eccentric that contacts straight rails on the upper sled.
  • the output shaft which is connected with contact system of the power diverter switch, is coaxial ly mounted on the charging shaft.
  • the output shaft has an arm with a pin and a roller located in a transversal groove of the lower sled, through which a jump switching occurs.
  • the arm has also two locking teeth, which are held in the end positions by a locking mechanism.
  • a spring-energy accumulator (4) in which the two guiding axes and coaxially mounted springs on them, operating in pressure mode are arranged sideways one below the other.
  • the charging is also done by a shaft with an eccentric.
  • the movement from the sled to the output shaft is transmitted via a toothed rack, attached to the sled and a gear wheel.
  • a disadvantage of this spring-energy accumulator is that the construction is complicated, especially the locking mechanism and the associated elements. Another disadvantage is that the friction is greater, as the toothed gear loads the sled eccentrically and the springs work under pressure. This is also disadvantageous for power diverter switches operating in the gaseous environment.
  • a further spring energy storage device (5) is known in which charging and release loading is more advantageous. It has a carrying housing to which two parallel carrying axes are mounted. Two sleds are sliding on both sides mirror-mounted. Two springs operating in tension mode are mounted coaxial ly on the axles and are attached to the outer edges of the axles. There are two rolling bearings situated one under another between the internal faces of the sleds. One of them is mounted on the end of a lever which is connected to a charging rod and an eccentric located on the carrier housing. The other roller bearing is mounted on the one side of a shift lever connected to the drive shaft of the contact system. The other arm is locked at the end positions by a locking mechanism.
  • a step power characteristic can be achieved in the construction shown on (5). This is done according to (6). On both sides of the housing, parallel between the axles are mounted by one piston with a spring, operating in pressure mode, which is tightened in the end of the charging.
  • the task of the invention is to provide a spring-energy accumulator for a power diverter switch of an on-load tap changer, having a simple design without sliding pairs of contact elements.
  • the connections between the elements must only be done by rolling bearings.
  • the spring blocks must be independent and accessible for installation, allowing for easy replacement of springs with others.
  • the charging mechanism must be simple and the shifting roller bearings must not load in one place only.
  • the task is solved with spring-energy accumulator for a power diverter switch of an on-load tap changer, containing a carrying flange, on which are mounted a charging system and a switching system.
  • the switching system is equipped with switching springs in the end positions, and locking mechanisms for unlocking to start the switching.
  • three pivots are mounted on the carrying flange.
  • On the left pivot is mounted a hub of the left lever and on right pivot - a hub of the right lever.
  • a charging lever is mounted on the third pivot.
  • the two levers have widened front parts, with located between them an upper rolling-contact bearing, connected to the end of the charging lever and a lower rolling-contact bearing, connected to one end of the double-armed switching lever.
  • the other end of this lever has a stem, held in the two extreme positions by two locking pawls.
  • Between the ends of the two levers are mounted switching springs operating in tensile mode.
  • the charging system comprises a gear wheel performing half the switching cycle and rod connected between this gear wheel and the charging lever.
  • the three pivots are mounted in the lower parts of the carrying flange and in the upper parts are reinforced with a common triangular plate.
  • the locking system comprises a left locking pawl and a right locking pawl connected to a spring. They are mounted on the lower part on pivot, on which part upper is mounted the charging lever.
  • the shaft of the charging gear wheel is mounted in a bush, fixed on the carrying flange.
  • the shaft of the double-armed lever is mounted in the middle of the carrying flange and is coupled to a shaft which drives the contact system.
  • a semi-cardan connector can be used of missing the coaxially. In order to achieve greater force at the start of the switching, an additional spring can be used between the ends of the two levers.
  • This spring has a piston with a spindle, and the piston may perform an idle stroke until it begins to stretch the spring.
  • An advantage of the spring-energy accumulator according to the invention is that, it has a very simple construction, convenient for monitoring and control. There are no sliding pairs of elements in it. All joints are hinged on the basis of rolling bearings. Another advantage is that the springs are opened and accessible and can be easily changed depending on the type of power diverter switch they are switching on. It is also advantageous that a step power characteristic with an independent spring can be achieved if necessary. It is also an advantage that the charging system is very simple and reliable. BRIEF DESCRIPTION OF THE DRAWINGS
  • Figure 1 is a longitudinal section through the center of the spring-energy accumulator.
  • Figure 2 is a top view of the spring-energy accumulator presented in the middle position for better understanding of the construction.
  • Figure 3 is a cross-sectional view of the double-armed switching lever and blocking fingers.
  • Figure 4 is a longitudinal section perpendicular to Fig. 1.
  • Figure 5 is a longitudinal section through the bearing of the switching levers and through the charging lever.
  • Figure 6 is a cross-section through the switching springs.
  • Figure 7 is a section through the additional spring, providing a step force characteristic with a large initial force.
  • the spring-energy accumulator is mounted on a carrying flange 1.
  • Three axes 2 are provided on a carrying flange 1.
  • the spring-energy accumulator is given in the middle, intermediate position.
  • the switching springs 12 are mounted between the ends 10 and 11 of the two levers 7 and 9. If a greater initial force is required, an additional spring 13 with a special force characteristic is also possible to be mounted.
  • the lever 7 On its inner side, the lever 7 has a widened front part 14 and a lever 9 has a widened front part 15. Between these front parts are located an upper rolling-contact bearing 16 and a lower rolling-contact bearing 17.
  • a bearing 16 is mounted at the end of the charging lever 18, axis 4 ( Figure 4, Figure 5).
  • a bearing 17 is mounted on the one arm of a double-armed switching lever 19 with a shaft 20, mounted in the center of the carrying flange 1.
  • a lever 19 has on its other arm a stem 21 which is locked in the shifts in extreme positions by a left locking pawl 22 and right locking pawl 23. These pawls are mounted at the bottom of axis 4.
  • a tcnsioncd spring 24 is stretched between their outer edges. To start the switching process, the unlocking of the stem 21 is made by the pawls 25, fixed to the charging lever 18.
  • the driving of the charging lever 18 is released by a rod 26 which is mounted in its one end on a lever 18 and in the other end - on a gear wheel 27.
  • the shaft 28 of this gear wheel is mounted in a bush 29, which is mounted on the carrying flange 1.
  • a gear wheel 27 rotated by an external gear wheel 30, shown schematically. It makes one switching turnover, and the gear wheel 27 makes a half of switching turnover.
  • the carrying flange 1 most often is mounted on a non-shown flange of the carrying head of the oil container of the on-load tap changer. This happens by bolts, passing through the holes 31.
  • the shaft 20 is connected to a shaft 32 which actuates a known, not-shown contact system. Most often the shaft 32 has an insulating part, as the contact system is at the star center potential. It is fastened to carrying flange 1 by not-shown insulating reeds. The power diverter switch is lifted by hooks 33. In order to compensate some deviations of the coaxial placement it is possible for a semi- carded clutch 34 to be used in the connection between shaft 20 and shaft 32.
  • the switching springs 12 (Fig. 6) have nozzles 35 in which there are threaded holes connected with screws 36 with hubs 37. They are joined to the ends 10 and 1 1 of the levers 7 and 9 by pins 38. By the screw connections it can be adjusted within certain limits the tension of the springs 12. The locking is made by means of counter nut 39.
  • the additional spring 13 (Fig. 7) is connected to the end 10 by a nozzle 40 with a stem 41.
  • the nozzle 42 on the other side is free.
  • An axle 23 is sliding in its opening, which at one end has a piston 44 and in the other - a stem 45, attached to a nozzle 11.
  • the free stroke x determines at what point of the stretching the additional system will appear.
  • the switching lever 19 In the starting position, the switching lever 19 is rotated, for example 45° counter clockwise (Fig.2, Fig.3) and its stem 21 is locked by the right locking pawl 23.
  • the levers 7 and 9 are turned to the left and the charging lever 18 too.
  • the gear wheel 27 is in a left dead point and the rod 26 is fixed along the diameter.
  • the gear wheel 30 When the switch command is submitted, the gear wheel 30 is rotated by a not-shown gear. It rotates a gear wheel 27, for example in a clockwise direction.
  • the rod 26 moves to the right the charging lever 18 and its bearing 16, acts on the widened front part 15 of the lever 9 and moves it to the right.
  • the bearing 17 holds the lever 7 in the starting position and the springs 12 begin to tighten.
  • the corresponding pawl 25 from the charging lever 18 releases the right locking pawl 23 and the left lever 7 by the action of the springs 12, jogs to the right and, via a bearing 17 acts on the double-armed lever 19 and performs the switching of the contact system.
  • the stem 21 of the switching lever 19 is locked by the left locking pawl 22.
  • the spring-energy accumulator is ready for the next switching. This happens in a similar manner by turning the gear wheel 27 clockwise or vice versa. It rotates to 180° from a right dead point to a left dead point.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Transmission Devices (AREA)

Abstract

L'invention concerne un accumulateur d'énergie de ressort qui est monté sur un flanc porteur (1). Il a un levier gauche (7) et un levier droit (9) montés sur deux pivots (2, 3) fixés dans le flanc porteur (1). Entre les extrémités (10, 11) des deux leviers (7, 9) sont montés des ressorts commutateurs (12). Si nécessaire, un ressort additionnel (13) peut servir à assurer une caractéristique de force d'escalier. L'intérieur des leviers contient des parties avant (14, 15) élargies, entre lesquelles sont situés un palier supérieur (16) de contact roulant, relié à l'extrémité du levier de charge (18) et un palier inférieur (17) de contact roulant, relié à un bras du levier commutateur (19) à double bras. L'autre bras a une tige (21) qui entre en prise en décalages avec les cliquets de verrouillage (22, 23). Ils sont montés dans la partie inférieure du troisième pivot (4), dont la partie supérieure est montée sur le levier de charge (18).
PCT/BG2018/000012 2017-02-16 2018-02-14 Accumulateur d'énergie de ressort pour un commutateur de déviateur de puissance de changeur de prises en charge WO2018148812A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1020197024882A KR102340423B1 (ko) 2017-02-16 2018-02-14 온-로드 탭 체인저의 파워 디버터 스위치를 위한 스프링 에너지 축압기
DE112018000857.6T DE112018000857T5 (de) 2017-02-16 2018-02-14 Federenergiespeicher für einen Leistungsumschalter eines Laststufenschalters
CN201880011292.5A CN110603619A (zh) 2017-02-16 2018-02-14 用于有载抽头变换器的电源转换开关的弹簧蓄能器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BG112461A BG67111B1 (bg) 2017-02-16 2017-02-16 Пружинен енергиен акумулатор за мощностен превключвател на стъпален регулатор на напрежение
BG112461 2017-02-16

Publications (2)

Publication Number Publication Date
WO2018148812A1 true WO2018148812A1 (fr) 2018-08-23
WO2018148812A4 WO2018148812A4 (fr) 2018-10-11

Family

ID=61911326

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Application Number Title Priority Date Filing Date
PCT/BG2018/000012 WO2018148812A1 (fr) 2017-02-16 2018-02-14 Accumulateur d'énergie de ressort pour un commutateur de déviateur de puissance de changeur de prises en charge

Country Status (5)

Country Link
KR (1) KR102340423B1 (fr)
CN (1) CN110603619A (fr)
BG (1) BG67111B1 (fr)
DE (1) DE112018000857T5 (fr)
WO (1) WO2018148812A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4123677A1 (fr) 2021-07-23 2023-01-25 Hitachi Energy Switzerland AG Changeur de prises en charge avec dispositif de positionnement et procédé d'assemblage d'un changeur de prises en charge

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1184580B (de) * 1961-08-23 1964-12-31 Reinhausen Maschf Scheubeck Vorrichtung zum stufenlosen AEndern des Drehmomentverlaufes von Energiespeichern, insbesondere bei Lastumschaltern von Regeltransformatoren
FR2298867A2 (fr) * 1975-01-24 1976-08-20 Reinhausen Maschf Scheubeck Accumulateu
BG111411A (bg) * 2013-02-26 2014-08-29 "Хюндай Хеви Индъстрис Ко. България" Ад Пружинен енергиен акумулатор за мощностен превключвател на стъпален регулатор на напрежение
US20150170847A1 (en) * 2012-07-28 2015-06-18 Machinenfabrik Reinhausen Gmbh Force accumulator for an on-load tap changer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005027524B3 (de) * 2005-06-15 2006-10-12 Maschinenfabrik Reinhausen Gmbh Kraftspeicher
DE102006008338B3 (de) * 2006-02-23 2007-02-15 Maschinenfabrik Reinhausen Gmbh Laststufenschalter mit Kraftspeicher
CN202796517U (zh) * 2012-04-23 2013-03-13 莱茵豪森机械制造公司 用于分级变压器的分接开关的负载切换器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1184580B (de) * 1961-08-23 1964-12-31 Reinhausen Maschf Scheubeck Vorrichtung zum stufenlosen AEndern des Drehmomentverlaufes von Energiespeichern, insbesondere bei Lastumschaltern von Regeltransformatoren
FR2298867A2 (fr) * 1975-01-24 1976-08-20 Reinhausen Maschf Scheubeck Accumulateu
US20150170847A1 (en) * 2012-07-28 2015-06-18 Machinenfabrik Reinhausen Gmbh Force accumulator for an on-load tap changer
BG111411A (bg) * 2013-02-26 2014-08-29 "Хюндай Хеви Индъстрис Ко. България" Ад Пружинен енергиен акумулатор за мощностен превключвател на стъпален регулатор на напрежение

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4123677A1 (fr) 2021-07-23 2023-01-25 Hitachi Energy Switzerland AG Changeur de prises en charge avec dispositif de positionnement et procédé d'assemblage d'un changeur de prises en charge
WO2023001962A1 (fr) 2021-07-23 2023-01-26 Hitachi Energy Switzerland Ag Changeur de prises en charge avec dispositif de positionnement et procédé d'assemblage de changeur de prises en charge

Also Published As

Publication number Publication date
KR102340423B1 (ko) 2021-12-16
BG67111B1 (bg) 2020-07-15
KR20190119057A (ko) 2019-10-21
WO2018148812A4 (fr) 2018-10-11
BG112461A (bg) 2018-08-31
DE112018000857T5 (de) 2019-11-14
CN110603619A (zh) 2019-12-20

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