subject: High-voltage Switchgear Hybrid Technology [print this page] The current high-voltage switchgear in the world there are three types: one is air-insulated switchgear (AIS), the other for the gas-insulated metal-enclosed switchgear (GIS), a third for the emerging hybrid technology Switchgear (MTS). This hybrid technology
between switching equipment is a new type of switching between the first two devices, but unlike the first two. MTS and the difference between AIS and GIS: compared with the AIS, MTS to the main circuit breaker, and other isolated switch / earthing switches, current / voltage transformers and other electrical equipment together, enclosed in a metal case, the charge to SF6 gas insulation. It also has a circuit breaker, disconnecting switches and transformers multiple functions, this is only a single function with the main difference between AIS. Since it combines a variety of electrical, greatly reduced the vertical size of the equipment, the vertical size is about 40% of AIS; Compared with GIS, as MTS is to combine a variety of electrical equipment, single-phase combination Electric, non-bus, use of soft wire through the bushing and the open-bar connection. And because the outlet pipe for the air-insulated, so it is with the AIS from the same phase electrical equipment (such as the 550kV under 8m), the equipment can not be reduced interval (horizontal) dimensions. This is it with SF6 gas insulated bus, phase distance of the main differences between the smaller GIS.
New generation of switching equipment where significant savings compared to AIS, but also significant savings compared to investment in GIS. In general, the advantages of new switching equipment: compact structure, with integration; with AIS compared to 90% less space; SF6 volume reduction 75%; optimization design results far beyond a single product The optimal design results. The resulting small size, light weight, lose much convenient and easy to install and so on; each annual leak rate of air gap less than 0.5%.
Latest power company to maintain strategic direction of development is the use of spare replacement parts, rather than on-site maintenance. Hybrid technology switching equipment from the modules, which meet the requirements of power companies, replacement parts easily.
In 2004, CIGRE, the air insulation and / or gas-insulated switchgear collectively compact hybrid technology switching equipment (MTS), and recognized the advantages of MTS. The device costs more than reducing the same time, bring a very flexible solution. It reduces the number of electrical components used, while improving reliability; its use of standardized modules, you can fault conditions, with a very short time to resume running (requires
