An environmentally friendly solid insulated metal-enclosed switchgear suitable for alpine environments

Abstract

The invention discloses an environment-friendly solid insulated metal-enclosed switchgear suitable for high-cold environments, belonging to the field of solid-insulated switchgears, and an environment-friendly solid-insulated metal-enclosed switchgear suitable for high-cold environments, including a solid-insulated metal-enclosed switchgear , The solid insulated metal-enclosed switchgear is equipped with a power control mechanism box, which can realize the integration of circuit breakers, isolating switches and other components in the insulated metal-enclosed equipment, reduce the impact of the discharge of the power switchgear on the outside during the working process, and reduce the external environment. The impact on power switching equipment, compared with the existing technology, in addition to reducing the impact of the external environment and easy to realize distribution network automation, it can also guide the charge to the discharge mechanism, and discharge it through the resistance terminal, thereby reducing part of the overflow in the low temperature environment The arc discharge caused by the charge will damage the solid insulated switchgear, thereby improving the safety of the power line under working conditions.

Description

technical field [0001] The invention relates to the field of solid-insulated switchgear, and more specifically relates to an environment-friendly solid-insulated metal-enclosed switchgear suitable for high-cold environments. Background technique [0002] Solid insulated metal-enclosed switchgear is a common and widely used complete set of electrical equipment in power systems. Various components are combined according to certain regulations, mainly using solid media to cover or seal all the high-voltage components of the main circuit of the switchgear. Insulated construction consisting of switchgear and controlgear fully assembled and enclosed in grounded metal enclosures, except for external connections. Switchgear enclosed in a grounded metal enclosure, except for incoming and outgoing lines, is completely enclosed by a grounded metal enclosure, and the enclosure meets a specific degree of protection to protect the internal equipment from external influences. Solid insula...

AI Technical Summary

Problems solved by technology

[0004] The problems to be solved in the design and production of solid insulated switchgear are shielding and continuity, metallization, isolation, grounding, electric field optimization and other technologies on the surface of insulating materials. The shielding layer can be directly and reliably grounded to reduce and eliminate the influence of the use environment on the product. However, in the actual use of the existing solid insulated switchgear, when the switch is in working condition, there is current passing through the internal circuit, and the solid insulated switchgear The insulation of some internal media will change. For example, the resistivity of some insulating rubber materials changes with temperature in a low-temperature environment. Part of the insulating material in the insulating switchgear changes from an insulating state to a conductive state, so that the neutral point in the medium generates free electrons. When the ionization effect in the medium reaches a certain level, arc discharge occurs, resulting in solid insulated switchgear damage, which in turn has a serious impact on the entire line

Images