EP0081153B1 - Bobine électrique d'inductance shunt - Google Patents

Bobine électrique d'inductance shunt Download PDF

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Publication number
EP0081153B1
EP0081153B1 EP82110899A EP82110899A EP0081153B1 EP 0081153 B1 EP0081153 B1 EP 0081153B1 EP 82110899 A EP82110899 A EP 82110899A EP 82110899 A EP82110899 A EP 82110899A EP 0081153 B1 EP0081153 B1 EP 0081153B1
Authority
EP
European Patent Office
Prior art keywords
magnetic
shunt
shunts
coil
yokes
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.)
Expired
Application number
EP82110899A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0081153A1 (fr
Inventor
Gérard Messé
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alstom SA
Original Assignee
Alstom SA
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 Alstom SA filed Critical Alstom SA
Publication of EP0081153A1 publication Critical patent/EP0081153A1/fr
Application granted granted Critical
Publication of EP0081153B1 publication Critical patent/EP0081153B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F37/00—Fixed inductances not covered by group H01F17/00
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H01F27/366—Electric or magnetic shields or screens made of ferromagnetic material

Definitions

  • the present invention relates to an electric shunt inductor. It is known to use such coils to compensate for the capacitive reactive energy of long high-voltage electric power lines and to increase the stability of networks.
  • the value of the induction in the case of a large coil d 'shunt inductance, can be several times higher than that which appears in the homologous zones for example of the transformers, and thus creates, in addition to additional losses, important hot spots.
  • British patent 983 481 describes a shunt inductor with reference to Figures 1 and 2.
  • This coil compasses cylinder heads 2 whose width is equal to the diameter of the coil 1.
  • the compressive forces due to electromagnetic forces are supported by a central column 3 made of insulating material, but beyond the diameter of the central column 3, the cylinder heads only rest on the coil 1 also, to transfer the forces only to the central column 3, the rods 2 of the bars 9 are welded ensure the rigidity of the cylinder heads and avoid placing stress on the coil 1.
  • Figure 3 and the text referring to it on page 3 lines 33 to 58 describes an alternative which consists in using a cylinder head whose width is the same as the diameter of the support column 3 and adding a cross-member made of laminated sheets 10 in the shape of an inverted U, the forces exerted on this cross-member being transmitted to the cylinder head and from there to the support column 3.
  • the invention aims to overcome these drawbacks.
  • the invention therefore relates to an electric shunt inductor comprising a magnetic frame formed by two legs joined by an upper yoke and a lower yoke, an electrical winding located in the center of the frame around a central core, parallel to the legs , the width L of the cylinder heads being less than the diameter of the electrical winding and close to the diameter of said central core, at least one magnetic shunt being placed on the outside of at least one of the two cylinder heads relative to the inside of the frame, the length of said shunt being greater than the width L of the cylinder head so as to exceed it on each side, said magnetic shunt being constituted by a stack of sheets, laminated perpendicular to the direction of statification of the stack of sheets of cylinder heads , the plane of the sheets of said shunt being parallel to the axis of the coil, characterized in that said shunt has the shape of a rectilinear rectangle parallelepiped.
  • two said magnetic shunts are placed above the upper yoke, located respectively on either side of a first clamping crosspiece of the magnetic circuit, and in that two said magnetic shunts are placed below the lower yoke, one of which, between a second crosspiece for clamping the magnetic circuit and a beam for fixing the coil to the bottom of a tank, and the other of which, between the other side of said crosspiece and a second beam for fixing the coil to the bottom of the tank.
  • the protruding length of the shunts on each side of the cylinder heads is close to the thickness of the cylinder heads.
  • the shunt inductor shown in the figures comprises a laminated magnetic sheet frame comprising two vertical legs 1 and 2 joined by an upper yoke 3 and a lower yoke 4. In the center of this magnetic frame is placed in electric winding 6 in layers whose figure 3 shows the shape of the section. This winding is located around a core 7 constituted in the example described by a succession of sections of iron and air gaps. An iron section 8 is shown in FIGS. 1 and 3.
  • the width of the yokes 5 and 4 is close to the diameter of the central core 7.
  • the magnetic frame is clamped by means of a clamping device 9 clamping an upper cross member 10 and a lower cross member 11 against the cylinder heads.
  • a clamping device 9 clamping an upper cross member 10 and a lower cross member 11 against the cylinder heads.
  • the lower and upper yokes are held tight by pieces 12, the triangular section of which is visible in FIG. 2, each welded to a master sheet 13 enclosing the pack of sheets.
  • the upper and lower clamping crosspieces 10 and 11 are fixed by means not shown to these clamping pieces 12.
  • the whole of the frame further comprises hoops not shown.
  • FIG. 1 shows only the bottom 14 and Figure 3 the cover 15 and the side wall 16.
  • the assembly is fixed to the bottom of the tank by means of two metal beams 17, 18.
  • FIG. 3 All around the tank are arranged magnetic shunts 19 (FIG. 3) each consisting of small bundles of sheets, in order to avoid losses in the tank.
  • two magnetic shunts 20 and 21 rectilinear of rectangular parallelepiped shape are located above the upper yoke 3 on either side of the upper clamping crosspiece 10.
  • Figure 2 shows the arrangement of these shunts and their stratification perpendicular to that of the yoke 3 and parallel to the axis of the coil.
  • These shunts have a length greater than the width L of the cylinder head so as to depress on each side of the cylinder head to a length advantageously close to the thickness e of the cylinder head.
  • Below the lower yoke 4 are also placed magnetic shunts 22 and 23, also rectilinear, respectively between the lower cross member 11 and the beam 17 and between the lower cross member 11 and the beam 18.
  • these shunts In the same way as the shunts located on the upper cylinder head, these shunts have a direction of stratification perpendicular to that of the lower cylinder head and they exceed its width on each side by a length equal to the thickness e of the cylinder head.
  • These shunts 20, 21, 22, 23 located outside the frame are fixed very simply because they do not have to resist the clamping pressure of the frame, nevertheless they must be sufficiently pressed against their respective cylinder head to eliminate the risks of vibrations and noise which could result from electromagnetic forces between these shunts and the cylinder heads.
  • This tightening is carried out by means of transverse beams, not shown, situated above the shunts, and fixed at their ends by screws which are screwed into parts welded to the master plates 13.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Regulation Of General Use Transformers (AREA)
EP82110899A 1981-11-30 1982-11-25 Bobine électrique d'inductance shunt Expired EP0081153B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8122353 1981-11-30
FR8122353 1981-11-30

Publications (2)

Publication Number Publication Date
EP0081153A1 EP0081153A1 (fr) 1983-06-15
EP0081153B1 true EP0081153B1 (fr) 1987-05-20

Family

ID=9264483

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82110899A Expired EP0081153B1 (fr) 1981-11-30 1982-11-25 Bobine électrique d'inductance shunt

Country Status (5)

Country Link
US (1) US4485368A (enrdf_load_stackoverflow)
EP (1) EP0081153B1 (enrdf_load_stackoverflow)
JP (1) JPS58105532A (enrdf_load_stackoverflow)
BR (1) BR8206897A (enrdf_load_stackoverflow)
DE (1) DE3276400D1 (enrdf_load_stackoverflow)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE35409E (en) * 1982-09-24 1996-12-24 Moore; Sidney D. Electrically addressable opto-electronic indicator for making dynamic evaluations of microscopic or larger subjects
DE3703026C1 (de) * 1987-02-02 1988-09-01 May & Christe Gmbh Vorschaltgeraet fuer Gasentladungslampen
US7236086B1 (en) 1993-06-14 2007-06-26 Vlt, Inc. Power converter configuration, control, and construction
FR2723339B1 (fr) * 1994-08-08 1996-10-31 Neopost Ind Machine d'affranchissement comportant une tete d'impression a jet d'encre
US8009005B2 (en) * 2007-06-13 2011-08-30 Mitsubishi Electric Corporation Reactor apparatus for a railway vehicle
JP2010171313A (ja) * 2009-01-26 2010-08-05 Japan Ae Power Systems Corp 静止誘導電器
CN102969133B (zh) * 2012-11-23 2015-04-22 中国西电电气股份有限公司 一种收紧带结构的磁分路压紧装置
CN103248057B (zh) * 2013-04-27 2016-01-20 无锡赛晶电力电容器有限公司 一种智能型柜式无功补偿装置
CN110085403B (zh) * 2019-05-21 2024-04-26 保定天威保变电气股份有限公司 一种变压器三柱铁芯端部磁屏蔽结构及其磁屏蔽方法
CN110349730A (zh) * 2019-06-04 2019-10-18 吴江变压器有限公司 一种铁心电抗器的磁路结构
CN113744969B (zh) * 2021-09-07 2022-10-14 吴江变压器有限公司 一种具有增磁结构的中性点接地电抗器
CN113963921B (zh) * 2021-10-25 2023-05-12 吴江变压器有限公司 一种均匀磁密的单相铁心电抗器
CN113903566B (zh) * 2021-11-10 2023-05-12 吴江变压器有限公司 一种三相电抗器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3195082A (en) * 1963-02-27 1965-07-13 Gen Electric Electrical reactor
GB983481A (en) * 1963-02-27 1965-02-17 Gen Electric Improvements in electrical reactors
US3195087A (en) * 1963-02-27 1965-07-13 Gen Electric Electrical shunt reactor
FR1409412A (fr) * 1964-07-16 1965-08-27 Comp Generale Electricite Perfectionnements aux bobines de réactance

Also Published As

Publication number Publication date
JPS58105532A (ja) 1983-06-23
BR8206897A (pt) 1983-10-04
DE3276400D1 (en) 1987-06-25
EP0081153A1 (fr) 1983-06-15
US4485368A (en) 1984-11-27
JPH0114685B2 (enrdf_load_stackoverflow) 1989-03-14

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