SU1327199A1

SU1327199A1 - Current transformer

Info

Publication number: SU1327199A1
Application number: SU843751388A
Authority: SU
Inventors: Юрий Викторович Байдак; Валентин Анатольевич Матухно; Глеб Васильевич Пуйло; Татьяна Евгеньевна Расторгуева; Владимир Петрович Шевченко
Original assignee: Одесский Политехнический Институт
Priority date: 1984-06-13
Filing date: 1984-06-13
Publication date: 1987-07-30

Abstract

Изобретение относитс к электротехнике , а именно к высоковольтному электрооборудованию, и может быть использовано в измерительных устройствах . Цель изобретени состоит в повьппении точности трансформатора. Устройство содержит первичную обмотку 1, образующую виток 2, магнито- провод 3 и распределенную вторичную обмотку 4. Форма витка, образованного первичной обмоткой, повтор ет форму магнитной системы в сечении, а его длина равна средней длине магнитопро- вода. Повышение точности достигаетс за счет подмагничивающего действи поперечного магнитного потока. 1 ил. (/)The invention relates to electrical engineering, namely to high-voltage electrical equipment, and can be used in measuring devices. The purpose of the invention is to improve the accuracy of a transformer. The device contains a primary winding 1 forming a coil 2, a magnetic conductor 3 and a distributed secondary winding 4. The shape of a coil formed by the primary winding repeats the shape of the magnetic system in cross section, and its length is equal to the average length of the magnetic conductor. The increase in accuracy is achieved due to the bias effect of the transverse magnetic flux. 1 il. (/)

Description

Изобретение относитс к электротехнике , а точнее к высоковольтному электрооборудованию устройств передачи и контрол электрической энергии и может быть использовано в измери- .тельных устройствах.The invention relates to electrical engineering, and more specifically to high-voltage electrical equipment for the transmission and control of electrical energy and can be used in measuring devices.

Цель изобретени - повышение точности трансформатора.The purpose of the invention is to improve the accuracy of the transformer.

На чертеже изображено устройство, общий вид.The drawing shows the device, the overall appearance.

Трансформатор тока (ТТ) содержит первичную обмотку 1, образующую виток 2, магнитопровод 3 и распределительную вторичную обмотку 4. Форма витка, образованного первичной обмоткой повтор ет форму магнитной системы в сечении, перпендикул рном оси 5The current transformer (CT) contains the primary winding 1 forming a coil 2, the magnetic core 3 and the distribution secondary winding 4. The shape of the coil formed by the primary winding repeats the shape of the magnetic system in cross section perpendicular to the axis 5

магнитопровода, а его длина равна средней длине магнитопровода.magnetic circuit, and its length is equal to the average length of the magnetic circuit.

Повышение точности в предлагаемом ТТ достигаетс за счет подмагничиваю- щего действи поперечного магнитногоThe increase in accuracy in the proposed TT is achieved due to the magnetizing effect of the transverse magnetic field.

20 ги производства трансформаторов с- подмагничиванием, улучшаютс технико- экономические показатели ТТ и использование электротехнической стали, обеспечиваютс высокие эксплуатацион20 of the transformer production with bias, improved technical and economic performance of the TT and the use of electrical steel, ensures high performance

потока. Так как направлени тока в первичной обмотке ТТ и дополнительном 25 ные показатели измерительной аппаратуры .flow. Since the direction of the current in the primary winding of the CT and the additional 25 indicators of measuring equipment.

Claims

Invention Formula

the coil is shifted in space by an angle of 11/2, the magnetic field of the incremental coil does not affect the field of mutual induction of the transformer. Thus, two magnetic fluxes function in the TT magnetic core: the mutual induction flux and the transverse magnetic flux located in quadrature. The presence of transverse magnetic flux leads to an increase in the magnetization of the ferromagnetic material of the TT magnetic core along the locking axis 3

The current transformer, containing 30 toroidal magnetic conductor, single-turn primary and secondary windings, is characterized by the fact that, in order to improve the transformer's accuracy, the primary winding is part of a length in the form of a coil located in a plane perpendicular to the torus axis .

35

Compiled by V. M. Snikova Editor L. Pcholinska Tehred L. Olinnyk Proofreader M. Pojo

Order 3403/50 Circulation 698 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

nor the main flow (mutual induction flow). The growth of magnetization (magnetic permeability) of a ferromagnet occurs at all values of the primary current in the nominal mode of operation of the CT, which leads to a decrease in the MDS magnetization of the transformer, i.e. to reduce its errors.

The invention can be used to reduce errors, i.e. to increase the accuracy class of TT at a constant mass of steel, or to reduce the mass of steel at a constant

Transformer accuracy class.

The invention can be used in single-turn current transformers (embedded, bus, pass). Thus, the technology of transformer production with magnetization is simplified, the technical and economic performance of TTs and the use of electrical steel are improved, and high performance indicators of measuring equipment are ensured.

formula of invention

and 3

The current transformer containing a toroidal magnetic circuit, single-turn primary and secondary windings, differs from the fact that, in order to improve the accuracy of the transformer, the primary winding is part of a length in the form of a coil located in a plane perpendicular to the torus axis.