EP0109096A1 - Anordnung mit variabler Induktivität - Google Patents

Anordnung mit variabler Induktivität Download PDF

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Publication number
EP0109096A1
EP0109096A1 EP83111475A EP83111475A EP0109096A1 EP 0109096 A1 EP0109096 A1 EP 0109096A1 EP 83111475 A EP83111475 A EP 83111475A EP 83111475 A EP83111475 A EP 83111475A EP 0109096 A1 EP0109096 A1 EP 0109096A1
Authority
EP
European Patent Office
Prior art keywords
magnetic
phase
control
magnetic field
alternating
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
Application number
EP83111475A
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English (en)
French (fr)
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EP0109096B1 (de
Inventor
Gérald Roberge
André Doyon
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Hydro Quebec
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Hydro Quebec
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 Hydro Quebec filed Critical Hydro Quebec
Publication of EP0109096A1 publication Critical patent/EP0109096A1/de
Application granted granted Critical
Publication of EP0109096B1 publication Critical patent/EP0109096B1/de
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
    • H01F21/00—Variable inductances or transformers of the signal type
    • H01F21/02—Variable inductances or transformers of the signal type continuously variable, e.g. variometers
    • H01F21/08—Variable inductances or transformers of the signal type continuously variable, e.g. variometers by varying the permeability of the core, e.g. by varying magnetic bias
    • 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
    • H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
    • H01F29/146—Constructional details
    • 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
    • H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
    • H01F2029/143—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias with control winding for generating magnetic bias

Definitions

  • the present invention relates to a variable inductance device and relates more particularly to a device, the effective permeability of which is controlled by a closed magnetic circuit through which a magnetic flux with constant and adjustable current flows.
  • variable inductance device or “variable inductance” will be used interchangeably.
  • One of the aims of the present invention is to avoid the drawbacks mentioned above, relating to known devices, and aims to provide an inductance with a low level of harmonics by appropriate control of its permeability or reluctance.
  • the present invention relates to a variable inductor for three-phase circuit comprising for each of its phases a first magnetic circuit formed of an anisotropic material through which an alternating magnetic field circulates.
  • the inductor further comprises a closed magnetic control circuit, also formed from an anisotropic material, through which a magnetic field with adjustable direct current flows, the magnetic control circuit being arranged relative to each of the first magnetic circuits. to define for each phase at least one common magnetic space in which the respective alternating and direct magnetic fields are superposed orthogonally to orient the magnetic dipoles of the common spaces in a direction predetermined by the intensity of the direct current magnetic field of the magnetic control circuit and thus to control the permeability of the first magnetic circuits to the alternating field.
  • the first magnetic circuits are formed by first and second ferromagnetic cores, the first and second cores each including three protuberances arranged symmetrically around each core and mounted opposite each other in pairs, in each of which circulates an alternating magnetic field coupled to a phase of a three-phase source, the closed magnetic control circuit being formed of a ferromagnetic control core disposed relative to the first and second core so as to define for each phase a common magnetic space where the magnetic field of this phase and the continuous magnetic field overlap orthogonally to orient the magnetic dipoles of each common space in a predetermined direction and thus to control the permeability of the first magnetic circuits to the alternating field of said phases.
  • Figures 1 and 2 illustrate an arrangement of three-phase inductance in a stack of cylindrical cores of identical cross section.
  • This arrangement allows a symmetrical distribution of PA, PB and PC phase windings around the legs 1-l ', 2-2' and 3-3 'of the nuclei M' and M "respectively.
  • the control nucleus N of which l the winding is supplied with adjustable direct current via the terminals E1 and E2, also comprises legs N1, N2 and N3 which are mounted opposite the legs 1, 2 and 3 of the core M ', on the one hand, and legs N'l, N'2 and N'3 mounted opposite the legs 1 ', 2' and 3 'of the core M ", on the other hand.
  • the magnetic core N connects the legs of the cores M 'and M " through junction zones belonging to the magnetic core N and subsequently called "common magnetic spaces".
  • the orthogonal arrangement of the direct current magnetic circuit with respect to the alternating current magnetic circuits has the effect of producing in the common magnetic spaces a magnetic torque proportional to the value, in the core N, of the direct current magnetic field, which polarizes the dipoles of these common magnetic spaces.
  • the respective alternating current magnetic fluxes of the three phases cannot take the same path as the direct current magnetic flux; the direct current magnetic field orients, by polarizing them, the magnetic dipoles of the common magnetic spaces so as to act on the permeability of the magnetic circuits excited by the alternating current windings of the different phases as desired.
  • the nuclei M 'M ", and N are made of ferromagnetic materials of the same cross section, either ferrite or rolled iron, and consequently have an inherent anisotropic property.
  • the dipoles of the different common spaces in the absence of direct current polarizing field in the N core tend to orient in the direction of the alternating maanetic field, the permeability of the magnetic circuits in alternating current then being a measure of the ease with which the magnetic dipoles orient in the direction of the corresponding magnetic field.
  • the alternating current magnetic circuits become saturated when their di-poles are completely oriented in the direction of the alternating magnetic field.
  • This three-phase variable inductance device therefore essentially consists in producing in common magnetic spaces a direct current magnetic field, which has the effect of opposing the rotation of the dipoles of these common spaces for adequate control of the effective permeability of alternating magnetic circuits.
  • FIG. 2 also allows elimination of the third and ninth harmonic currents by means of a star connection of the three phases PA, PB and PC, with floating neutral, not connected to ground, and elimination of the fluxes.
  • third and ninth harmonics using a superimposed secondary winding, PSA, PSB and PSC, connected in a triangle.
  • This delta connection of the PSA, PSB and .PSC windings is illustrated in Figure 3.
  • the losses in the control core N are considerably reduced due to the fact that no bidirectional reaction remains between the control core and phase nuclei, since there is no alternating magnetic flux in the control nucleus N, the sum of the effects of the three phases being zero.
  • the neutral of the star connection being isolated from ground, it is not possible for zero sequence components to establish a transient state.
  • the three-phase variable inductor can also operate in self-control.
  • the diagram of connection of the phases and the control coils which include a variable source with direct current V providing a reverse flux is represented in FIG. 3.
  • the excitation mode proposed in FIG. 3 comprises two superimposed control systems, that is to say a control supplied directly by the high voltage power circuit and a reverse low power control connected to the DC source V constant, but adjustable.
  • the three-phase current is rectified using diode bridges T and crosses the excitation winding El-E2 before completing its return circuit.
  • a second winding is superimposed on the first in the control core and is supplied by a constant direct current source V of low power.
  • V constant direct current source
  • This latter winding is arranged so that the direct current magnetic field generated in the control core N opposes the main direct current magnetic field generated by the self-monitoring winding.
  • the magnetic field resulting in the control core will then be a function of the magnetic field generated by the three-phase alternating current, rectified by T, which flows in the winding in self-control and, therefore, a function of the voltage level across the terminals. variable inductance.
  • This control is simple and does not require any feedback loop to correct the desired magnetic torque on the dipoles in the common magnetic space N.
  • This magnetic torque is generated directly by the resulting direct current magnetic field injected into the control core and the choice of the number of turns of the self-check winding plays a very important role.
  • the attached table shows the harmonic distortion rates of the phase current obtained when the three-phase inductor of Figure 3 is used either in self-control, or in self-control with reverse control.
  • the figures in parentheses refer to the operating points indicated in Figure 4.
  • FIG. 4 represents the characteristic curves of the three-phase cylindrical inductance of FIG. 3 as a function of the ampere-turns of direct current control and as a function of a self-control. More particularly, the curve “X" is that obtained for the operation in self-checking only of the inductor while the curve “Y" represents the operating characteristic of the three-phase inductor in self-checking with reverse DC power supply of the control core.
  • variable permeability inductor described above lends itself particularly well to an application as a static compensator when used in parallel with a capacitor bank for power transmission networks.
  • the response time of the variable inductor is of the order of, or less than, one cycle for a network voltage of 60 Hertz and the transition is made without deformation of the current.
  • the harmonic distortion of the inductor being very low, no filter other than the connection of the secondary delta is necessary, which contributes to very significantly reducing the cost and increasing the reliability of the static compensator.
  • this variable inductor can be connected directly at the high voltage of the network and that its losses of iron and copper are comparable to those of a transformer.
  • control mode proposed for the inductor with variable permeability of the cylindrical type illustrated in FIG. 3 is particularly advantageous in an application to the static compensator.
  • This three-phase inductor includes a self-control circuit from the rectification of the inductor current and a low-power reverse control from an independent direct current source.
  • the inductance thus controlled offers an ideal element for controlling the energy conveyed by an energy transmission line, because the operating range of this inductor is threefold (voltage rise, regulation and overvoltage, the saturation level of the inductance is never reached, the response to a voltage disturbance on the transmission line is instantaneous and its reliability is considerable mainly due to the simplicity of this control.
  • this inductance three-phase becomes the variable element for a static compensator whose performance meets the present needs of energy transmission networks.
  • the phase currents pass from l the capacitive state to the inductive state in an interval of about 0.5 cycles on a basis of 60 Hertz.
  • This transition from the capacitive state, where I is less than zero, to the inductive state is particularly ent well shown in Figure 5 whose curves illustrate the operating points of the static compensator using a variable inductance with reverse control ranging from 0 to 500 negative ampere-turns.
  • the variable inductance described above therefore allows transmission without deformation of the current wave, except for the angle adjustment from + 90 ° to - 90 ° with respect to the supply voltage of the compensator; as for the phase current distortion, it remains negligible.
  • the three-phase variable inductor can also be connected in series with a capacitor bank, the result being inductive, in order to increase the power variation of the variable inductor as a function of direct current ampere-turns.
  • the number of turns of the direct current coil supplied by the diode bridges could possibly be modified to l using thyristors slaved to a voltage setpoint, which would have the effect of shifting the curve of the operating point of the inductor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Control Of Electrical Variables (AREA)
  • Ac-Ac Conversion (AREA)
EP83111475A 1978-10-20 1979-10-19 Anordnung mit variabler Induktivität Expired EP0109096B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA000313821A CA1118509A (fr) 1978-10-20 1978-10-20 Variable inductance
CA313821 1978-10-20

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP79400766.6 Division 1979-10-19

Publications (2)

Publication Number Publication Date
EP0109096A1 true EP0109096A1 (de) 1984-05-23
EP0109096B1 EP0109096B1 (de) 1986-04-30

Family

ID=4112642

Family Applications (3)

Application Number Title Priority Date Filing Date
EP83111087A Expired EP0106371B1 (de) 1978-10-20 1979-10-19 Variable Induktivität für Dreiphasenkreis
EP83111475A Expired EP0109096B1 (de) 1978-10-20 1979-10-19 Anordnung mit variabler Induktivität
EP79400766A Expired EP0010502B1 (de) 1978-10-20 1979-10-19 Variable Induktivität

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP83111087A Expired EP0106371B1 (de) 1978-10-20 1979-10-19 Variable Induktivität für Dreiphasenkreis

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP79400766A Expired EP0010502B1 (de) 1978-10-20 1979-10-19 Variable Induktivität

Country Status (6)

Country Link
US (1) US4393157A (de)
EP (3) EP0106371B1 (de)
JP (1) JPS6040171B2 (de)
BR (1) BR7906797A (de)
CA (1) CA1118509A (de)
DE (1) DE2967481D1 (de)

Cited By (1)

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CN116599162A (zh) * 2023-07-19 2023-08-15 昆明理工大学 一种n-1下新能源渗透率的确定方法

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US7026905B2 (en) * 2000-05-24 2006-04-11 Magtech As Magnetically controlled inductive device
JP4789030B2 (ja) * 2001-04-27 2011-10-05 財団法人北九州産業学術推進機構 可変リアクトルを用いた誘導発電機の電圧制御方法
NO318397B1 (no) * 2001-11-21 2005-03-14 Magtech As System for styring av impedans i en arbeidskrets
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KR102032791B1 (ko) * 2013-06-03 2019-10-16 삼성전자주식회사 노이즈 필터 및 이를 포함하는 전자장치
JP6504766B2 (ja) * 2014-08-28 2019-04-24 株式会社日立製作所 静止誘導電器
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RU2658346C1 (ru) * 2017-06-07 2018-06-20 Илья Николаевич Джус Способ коммутации управляемого шунтирующего реактора
RU2659820C1 (ru) * 2017-07-13 2018-07-04 Илья Николаевич Джус Семистержневой трехфазный подмагничиваемый реактор
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RU2658347C1 (ru) * 2017-10-03 2018-06-20 Илья Николаевич Джус Устройство для регулирования тока шунтирующего реактора
RU2686657C1 (ru) * 2018-07-23 2019-04-30 Илья Николаевич Джус Управляемый шунтирующий реактор (варианты)
RU2685221C1 (ru) * 2018-07-24 2019-04-17 Илья Николаевич Джус Шунтирующий реактор со смешанным возбуждением (варианты)
RU2686301C1 (ru) * 2018-07-24 2019-04-25 Илья Николаевич Джус Шунтирующий реактор с комбинированным возбуждением (варианты)
RU2699017C1 (ru) * 2018-12-19 2019-09-03 Илья Николаевич Джус УСТРОЙСТВО ДЛЯ УПРАВЛЕНИЯ ДВУМЯ ПОДМАГНИЧИВАЕМЫМИ РЕАКТОРАМИ (варианты)
RU2706719C1 (ru) * 2019-01-28 2019-11-20 Илья Николаевич Джус УСТРОЙСТВО УПРАВЛЕНИЯ ДВУМЯ РЕАКТОРАМИ (варианты)
RU2701150C1 (ru) * 2019-01-28 2019-09-25 Илья Николаевич Джус УПРАВЛЯЕМЫЙ РЕАКТОР-КОМПЕНСАТОР (варианты)
RU2701144C1 (ru) * 2019-01-28 2019-09-25 Илья Николаевич Джус Управляемый шунтирующий реактор
RU2700569C1 (ru) * 2019-03-26 2019-09-18 Илья Николаевич Джус Управляемый реактор с независимым подмагничиванием
RU2701149C1 (ru) * 2019-03-26 2019-09-25 Илья Николаевич Джус УПРАВЛЯЕМЫЙ ШУНТИРУЮЩИЙ РЕАКТОР (варианты)
RU2701147C1 (ru) * 2019-03-26 2019-09-25 Илья Николаевич Джус Шунтирующий управляемый реактор
CN112541154B (zh) * 2020-11-26 2021-10-08 东南大学 一种磁路功率的计算方法
RU2757149C1 (ru) * 2020-12-08 2021-10-11 Илья Николаевич Джус Трехфазный управляемый реактор (варианты)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116599162A (zh) * 2023-07-19 2023-08-15 昆明理工大学 一种n-1下新能源渗透率的确定方法
CN116599162B (zh) * 2023-07-19 2023-09-15 昆明理工大学 一种n-1下新能源渗透率的确定方法

Also Published As

Publication number Publication date
US4393157A (en) 1983-07-12
JPS5556608A (en) 1980-04-25
EP0010502A1 (de) 1980-04-30
CA1118509A (fr) 1982-02-16
EP0109096B1 (de) 1986-04-30
DE2967481D1 (en) 1985-08-14
BR7906797A (pt) 1980-06-17
JPS6040171B2 (ja) 1985-09-10
EP0106371A2 (de) 1984-04-25
EP0010502B1 (de) 1985-07-10
EP0106371A3 (en) 1984-05-30
EP0106371B1 (de) 1986-03-26

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