RU2009119607A

RU2009119607A - METHOD AND DEVICE FOR HUNGER MELTING ON WIRES AND CABLES OF THE AIRLINE (OPTIONS)

Info

Publication number: RU2009119607A
Application number: RU2009119607/07A
Authority: RU
Inventors: Леонид Леонидович Балыбердин (RU); Леонид Леонидович Балыбердин; Рафаил Анатольевич Дайновский (RU); Рафаил Анатольевич Дайновский; Берта Павловна Краснова (RU); Берта Павловна Краснова; Наталья Георгиевна Лозинова (RU); Наталья Георгиевна Лозинова; Михаил Иванович Мазуров (RU); Михаил Иванович Мазуров
Priority date: 2009-05-08
Filing date: 2009-05-08
Publication date: 2010-12-10
Also published as: RU2422963C2

Abstract

1. Способ плавки гололеда на проводах и тросах воздушной линии электропередачи, заключающийся в питании схемы плавки от дополнительного источника, причем в фазные провода линии одновременно вводят дополнительный ток нулевой последовательности. ! 2. Способ плавки гололеда на проводах и тросах воздушной линии электропередачи по п.1, заключающийся в том, что ток нулевой последовательности вводят в фазные провода линии электропередачи на частоте в несколько раз меньшей, чем рабочая частота линии электропередачи. ! 3. Устройство для реализации способа плавки гололеда на проводах и тросах ВЛ по п.1, содержащее дополнительный источник питания, подключенный посредством выключателя к концам соединенных в параллель друг с другом первичных обмоток сериесного трансформатора, вторичные обмотки которого присоединены в рассечку в фазы ВЛ и зашунтированы разъединителем. ! 4. Устройство для реализации способа плавки гололеда на проводах и тросах ВЛ по п.1, содержащее дополнительный источник питания, подключенный посредством выключателя к трехфазному мостовому управляемому преобразователю, в котором параллельно управляемым вентилям прямой проводимости присоединены дополнительные управляемые вентили обратной проводимости, зажимы постоянного тока преобразователя присоединены через второй разъединитель к концам соединенных в параллель друг с другом первичных обмоток сериесного трансформатора, вторичные обмотки которого присоединены в рассечку в фазы ВЛ и зашунтированы разъединителем. ! 5. Устройство для реализации способа плавки гололеда на проводах и тросах ВЛ по п.1, содержащее дополнительный источник питания, с� 1. A method of melting ice on wires and cables of an overhead power transmission line, which consists in feeding the melting circuit from an additional source, and additional zero-sequence current is simultaneously introduced into the phase wires of the line. ! 2. The method of melting ice on wires and cables of an overhead power line according to claim 1, which consists in the fact that a zero-sequence current is introduced into the phase wires of the power line at a frequency several times lower than the operating frequency of the power line. ! 3. A device for implementing the method of melting ice on wires and cables of overhead lines according to claim 1, containing an additional power source connected via a switch to the ends of the primary windings of the series transformer connected in parallel with each other, the secondary windings of which are connected in a cut in phases of overhead lines and shunted disconnector. ! 4. A device for implementing the method of melting ice on wires and OHL cables according to claim 1, comprising an additional power source connected via a switch to a three-phase bridge controlled converter, in which additional controlled reverse conduction valves, DC clamps of the converter are connected in parallel to the direct conductivity valves connected through the second disconnector to the ends of the primary windings of the series transformer connected in parallel to each other, secondary the windings of which are connected in dissection in the overhead lines and are shunted by a disconnector. ! 5. A device for implementing the method of melting ice on wires and cables of overhead lines according to claim 1, containing an additional power source, s

Claims

1. A method of melting ice on wires and cables of an overhead power transmission line, which consists in feeding the melting circuit from an additional source, and additional zero-sequence current is simultaneously introduced into the phase wires of the line.

2. The method of melting ice on wires and cables of an overhead power line according to claim 1, which consists in the fact that a zero-sequence current is introduced into the phase wires of the power line at a frequency several times lower than the operating frequency of the power line.

3. A device for implementing the method of melting ice on wires and cables of overhead lines according to claim 1, containing an additional power source connected via a switch to the ends of the primary windings of the series transformer connected in parallel with each other, the secondary windings of which are connected in a cut in phases of overhead lines and shunted disconnector.

4. A device for implementing the method of melting ice on wires and OHL cables according to claim 1, comprising an additional power source connected via a switch to a three-phase bridge controlled converter, in which additional controlled reverse conduction valves, DC clamps of the converter are connected in parallel to the direct conductivity valves connected through the second disconnector to the ends of the primary windings of the series transformer connected in parallel to each other, secondary the windings of which are connected in dissection in the overhead lines and are shunted by a disconnector.

5. A device for implementing the method of melting ice on wires and overhead lines of claim 1 according to claim 1, comprising an additional power source connected via a switch to a three-phase bridge controlled converter, in which additional controlled reverse conduction valves, DC clamps of the converter are connected in parallel to the direct conductivity valves connected through a second disconnector to the ends of the primary windings of a single-phase series transformer, the secondary winding of which is turned on crosscuts between the neutral of the mains transformer and system ground substation and shunted disconnector.