Indoor high-voltage vacuum load switch-fuse combined electrical apparatus

Abstract

The invention provides an indoor high-voltage vacuum load switch-fuse combined electrical apparatus stable in performance and wide in application range. The indoor high-voltage vacuum load switch-fuse combined electrical apparatus comprises a frame, isolation switches, fuses and the like and is characterized in that the isolation switches and the fuses are respectively arranged at two sides of the frame, vacuum load switches are arranged at an upper part of the frame, the isolation switches, the fuses and the vacuum load switches are arranged in a triangular manner, the frame is also provided with an operating mechanism, a five-prevention program lock is arranged under the operating mechanism, two sides of the frame are provided with electrified sensors, a moving contact box of each vacuum load switch adopts a double-guiding apparatus, and a guiding connection rod for connecting a vacuum load tube maintains horizontal movement to solve a technical problem of horizontal installation of the vacuum load tube. The performances and the service life of the vacuum load switches are guaranteed. The indoor high-voltage vacuum load switch-fuse combined electrical apparatus is suitable for being used in a remote place which has a vast territory with a sparse population and is mainly used for remote operation, and conditions of equipment in a whole wind power plant can be mastered fully in a controller room.

Description

technical field [0001] The invention relates to the technical field of high-voltage electrical equipment and components, in particular to a novel indoor high-voltage vacuum load switch-high-voltage fuse combination appliance. Background technique [0002] As we all know, the indoor high-voltage vacuum load switch-fuse combination is a commonly used high-voltage switching device, but most of them are used for simple switches with a voltage level of 10kV, and such switches with a voltage level of 40.5kV are relatively rare. [0003] The overall layout of the existing 40.5kV voltage level combined electrical appliances is roughly divided into two categories, one is unilateral layout, (see figure 1 and figure 2 ) That is, all functional components and operating mechanisms are arranged on one side of the rack. This type of combined electrical appliance has a relatively simple structure, but it is bulky and inconvenient to transport and install. In case, replace the blown fuse....

AI Technical Summary

Problems solved by technology

[0002] As we all know, the indoor high-voltage vacuum load switch-fuse combination is a commonly used high-voltage switching device, but most of them are used for simple switches of 10kV voltage level, and relatively few such switches of 40.5kV voltage level

[0003] The overall layout of the existing 40.5kV voltage level combined electrical appliances is roughly divided into two categories, one is unilateral layout, (see figure 1 and figure 2 ) That is, all functional components and operating mechanisms are arranged on one side of the rack. This type of combined electrical appliance has a relatively simple structure, but it is bulky and inconvenient to transport and install. case, replace the blown fuse

very limited use

Another class of conventional two-sided layouts, (see image 3 and Figure 4 ) isolating switch and load switch, and the fuses are arranged on both sides of the rack, which is convenient to use and has good performance, but, first, it is large in size and poor in reliability

Second, it cannot meet the requirements of the "five defenses"

[0004] These two combined electrical appliances have a common problem, that is, the isolating switch and the grounding switch are linked and cannot be operated separately. Certain defects cannot fully meet the requirements of "five defenses". Due to the limitation of volume, the selection of these two types of combined electrical appliances is relatively small in terms of insulation distance and withstand voltage level, and the scope of application is limited.

[0005] For the operating mechanism: the existing combined electrical appliances are mainly operated manually, and some can be operated manually and electrically, but the operating mechanism is relatively simple, the reliability is poor, and the performance is not stable enough

Compared with the wind farm, which is located in a remote place and has a vast area, the technical requirements of remote control operation are the main technical requirements. The existing combined electrical appliances are quite reluctant to use.

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