SU974440A1

SU974440A1 - High-voltage electric apparatus

Info

Publication number: SU974440A1
Application number: SU802988416A
Authority: SU
Inventors: Анатолий Александрович Булынин; Леонид Николаевич Карпенко; Геннадий Павлович Мальчуков; Александр Иванович Уткин
Original assignee: Ленинградский Ордена Ленина Политехнический Институт Им.М.И.Калинина; Научно-Исследовательский Институт Производственного Объединения "Уралэлектротяжмаш" Им.В.И.Ленина
Priority date: 1980-10-04
Filing date: 1980-10-04
Publication date: 1982-11-15

Description

Изобретение относитс к высоковольтным электрическим аппаратам, у которых дл передач команд с псэтенциала земли на высокий потенциал примен ютс оптико-электронные системы управлени .The invention relates to high-voltage electrical apparatus, in which opto-electronic control systems are used to transmit commands from the earth to high potential.

Известны высоковольтные электрические аппараты с оптико-электрон.ными системами управлени , выполненные со световыми системами управлени , у которых на высоком потенциале размещено приемное устройство, где располагаютс элементы системы управлени . Габариты и масса элементов системы управлени на высоком потенциале таких, как конденсаторные батареи, источники питани и др., а также кожуха приемного устройства могут быть значительными Lll«High voltage electrical apparatuses with optoelectronic control systems are known that are made with light control systems that have a receiving device at high potential where the elements of the control system are located. Dimensions and mass of elements of a control system at high potential, such as capacitor batteries, power sources, etc., as well as the receiver housing can be significant. Lll "

Наиболее близким к изобретений по технической сущности вл етс высоковольтный электрический аппарат, содержгиций опорно-изол ционную конструкцию , блок управлени с элементами оптико-электронной системы управлени , расположенный на высоком потенциале, и кожух С.Closest to the inventions of the technical nature is a high-voltage electrical apparatus, the contents of the insulating support structure, the control unit with elements of an optical-electronic control system located at a high potential, and the casing C.

Однако за счет того, что элементы систег.1Ы управлени располаггиотс в блоке управлени , габариты блокаHowever, due to the fact that the elements of the control system are located in the control block, the dimensions of the block

возрастают и поэтому увеличиваютс ветровые нагрузки на опорную изол цию в процессе эксплуатации. Конструкци блока получаетс сложной, так как необходим отдельный кожух дл экранировки элементов оптикоэлектронной системы от силового тока аппарата, проход щего в непосредственной близости от элементов сие-. the wind loads on the support insulation increase during operation. The construction of the block is complicated, since a separate casing is necessary for shielding the elements of the optoelectronic system from the power current of the apparatus passing in the immediate vicinity of the signal elements.

10 темы управлени .10 management topics.

Цель изобретени - упрощение конIструкции , повышение надежности и снижение ветровых нагрузок на опор15 ную изол цию.The purpose of the invention is to simplify the design, increase reliability and reduce wind loads on the support insulation.

Указанна цель достигаетс тем, что кожух дл размещени элементов оптико-электронной систег.лы управлени выполнен в виде пустотелого This goal is achieved by the fact that the casing for accommodating the elements of the optoelectronic control system is made in the form of a hollow

20 тороида, который служит одновременно экраном дл выравнивани электрического пол .20 a toroid that serves simultaneously as a screen for leveling the electric field.

При проектировании электрических аппаратов учитываетс нагрузка на 25 опорную изол цию. Расчет нагрузки от давлени ветра на поверхности конструктивных элементов производитс по формулеWhen designing electrical apparatus, a load of 25 support insulation is taken into account. The calculation of the load from the wind pressure on the surface of structural elements is made according to the formula

-г -g

« 0,613- 10 V SP "0.613-10 V SP

Claims

30 calculated wind load, n; V - wind speed, cm / s, K - 41Edynamic coefficient of the corresponding element, 8 "- flatness of the projection of the structural element on a plane perpendicular to the wind direction, see. Wind load is proportional to the area of structural elements So for an electrical apparatus at 750 kV with optical elements - the electronic system is controlled in a separate casing with dimensions of 500,550-650 mm. The wind load on this receiving device with a wind speed of V 40 m / s is - 50 n. The wind load is also increased by the same amount if the elements of the optoelectronic control systems are located inside the control unit as in the prototype by increasing the dimensions of this unit. The wind load on the support insulation of an electrical apparatus does not increase if, at high potential, the housing for accommodating the elements of an optoelectronic control system is made in the form of a hollow toroid that serves as a simultaneous shield for leveling the electric field. KV FIG. 1 shows a pole of a high-voltage switch of the supporting structure, a general view, in FIG. 2 is a schematic diagram of the optoelectronic switch system; in fig. 3 is a housing within which the elements of the optoelectronic system are located in FIG. 4 - section A-A n & FIG. 3. On the ground potential there is a frame 1, on which a column of supporting insulators 2 is installed. For rigidity of the structure there are stretches 3. On top of the column of supporting insulators 2 there is an arc suppression device 4. On a high potential there are 5 screens for shielding contact switch systems, a casing 6 in which elements of an opto-electronic control system are placed and which simultaneously serves as a screen for leveling the electric field intensity by supporting insulation. Inside the column of the supporting insulators 2 a glass fiber light guide 7 is placed, which serves as a transmission to the high potential of the radiation pulse from the source 8 located on the ground potential. At high potential, a radiation receiver 9 is located, a capacitor 10 discharging to the winding 11 of an executive magnet. The power supply of the opto-electronic control system is provided from autonomous power sources 12 and 13. Presented in FIG. 2, the circuit of the optoelectronic switch control system serves to transmit one command, for example, a trip. There is the same circuit (not shown) for transmitting the switch-on command. At high potential, the elements of these schemes of the optoelectronic control system are located inside the casing, which is made in the form of a hollow toroid that serves simultaneously as a screen for leveling the electric field. Typically, screens in transverse section have the form of a circle, and they are made of steel pipes or pipes of aluminum alloys. In a 750 kV VIV type circuit breaker, the shield diameter is 1500 mg / i. 140 mm tubes are used for the screen. Such is the size of the casing for accommodating elements of the opto-electronic control system, therefore the casing serves as a screen for leveling the electric field. In the casing 6 there are six manholes, which are closed by covers 14. In the casing 6 there are 1 capacitors 10, power sources 12 and 13 assembled from batteries 15. The remaining components, which are located at high potential, are placed on two boards 16. airtightness at the junctions of the gates 14 with the casing 6. Only the optical fibers come to the casing for transmitting radiation signals to the photodiodes, and only the wires to the executive magnets leave the casing. located outside the casing. Such a casing, which at the same time serves as a screen for leveling the electric field, protects the control system from electromagnetic and water, which simplifies the design, increases the reliability of the device and reduces its dimensions on the high voltage side, which reduces wind loads on the reference insulation. To improve the operating conditions of the control system, air ducts can be connected to the casings to blow air into the internal cavity of the casings. The proposed embodiment of the housing for the placement of elements of optoelectronic systems can be used in high-voltage devices with opto-electronic control systems, in opto-electronic current transformers, etc. The invention makes it possible to simplify the design, increase reliability, and reduce wind loads on the support insulation of the apparatus. The wind loads for the apparatus at 1150 kV with the proposed embodiment of the casing for positioning the elements of the optical-electronic control system are reduced by 50-80 N. The economic effect is 1.5 thousand rubles. on. switch 1150 to the formula of the invention A high-voltage electrical aptiapar containing a insulation-supporting structure, a control unit with elements of an optical-electronic control system located at a high potential, and a casing that, in order to simplify the design, increase the reliability of the apparatus and the reduction of wind loads; the casing for accommodating elements of the opto-electronic control system is designed as a hollow toroid, which is also a screen for leveling the electric field. Sources of information taken into account during the examination of li Karpenko L.N. Light systems for controlling high-voltage switches. L., Energie, 1977, p. 5tb.

2. Patent of the GDR 74888, cl. H 01 h, 1970. C U flO fJiHuff

Potential З1н / г

Aa noSepny / no

ID