Capacitive type isolated bus with two shielded ends

Abstract

The invention discloses a capacitive type isolated bus with two shielded ends, aiming at solving the problems of complicate process and high manufacturing cost of the high-voltage capacitive type isolated bus in the prior art. The capacitive type isolated bus with two shielded ends, provided by the invention, mainly comprises a current guiding body, rigid isolated barrels, fixed flanges and capacitive type isolators, and is characterized in that the current guiding body is arranged at a central position and two ends of the current guiding body are respectively provided with a plugging terminal with a plugging slot; the plugging terminals at two ends of the current guiding body are respectively and fixedly connected with one rigid isolated barrel; the other terminal of each rigid isolated barrel is respectively fixed on one fixed flange; the capacitive type isolators are wrapped outside the rigid isolated barrels and the current guiding body by using organic isolated tapes; and an innermost screen of a capacitive screen of each capacitive type isolator is equipotential to the current guiding body and an outermost screen of the capacitive screen of each capacitive type isolator is reliably grounded through the corresponding fixed flange. By adopting the capacitive type isolated bus with two shielded ends, provided by the invention, an isolated shielding type intermediate connector is not needed, the capacitive type isolated bus has the advantages of simple structure, low manufacturing cost and mounting convenience, is subjected to isolated shielding in a whole course, and can be detected at a factory; and the current guiding body is connected in a plugging manner so that the bus is regulated freely in a manner of expanding under heating and contracting under cooling.

Description

technical field [0001] The invention relates to an insulated busbar of a power system, in particular to a double-end shielded capacitive insulated busbar with various voltage levels above 6kV in the power system. Background technique [0002] At present, there are 6kV ~ 40.5kV capacitive insulated busbars on the market. In order to realize the shielded connection of two busbars, two schemes are adopted: one is to make capacitive insulation on site, and the other is to add a shielding cylinder. The two solutions cannot be used in higher voltage capacitive insulated busbars due to process, cost and other reasons. Nowadays, there are still problems in the shielding connection of high voltage capacitive insulated busbars with complex process and high production cost. Contents of the invention [0003] In order to overcome the problems of complex process and high production cost in the shielding connection of high-voltage capacitive insulating bus bars at the present stage, the...

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Problems solved by technology

[0003] In order to overcome the problems of complex process and high production cost in the shielding connection of high-voltage capacitive insulating bus bars at the present stage, the present invention proposes a double-ended shielding capacitive insulating bus bar, which mainly includes a conductive body, and the two ends of the conductive body are firmly connected Rigid insulation cylinder, one end of the rigid insulation cylinder is firmly connected with the guide body, and the other end is firmly connected with the fixed flange, there is a capacitive insulator outside the rigid insulation cylinder and the guide body, and there are socket slots at both ends of the guide body. The double-ended shielded capacitive insulated busbar does not require a separate insulated shielded intermediate connector, the structure is simple, the production cost is low, the whole process is insulated and shielded, the installation is convenient, and it can be tested in the factory. Free adjustment of thermal expansion and contraction

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