The Study Of GIS Used In Power Station

GIS is a new style high-voltage electrical equipment, i n foreign countries its development begin in 1940's and in our country, in later 1960's it was firstly put into operation at the end of 1970's in our country, At present, a number of large scale domestic power stations have adopted this technology. Compared with the traditional open type switching device, GIS has massive comprehensive superiority in technological economy: Lit is of small bulk and because of this the proportion of the room is largely reduced. 2. Complete sets of equipment are convenient for installation. 3. The high-voltage electrical equipment are all assembled in the totally-enclosed earthling mental enclosure which is full of SF6 gas, and have no exposed conductive parts and glaze insulation. So high reliable operation is realized. 4. There is little maintenance work. 5. Although the price of GIs is high and one-off investment in electrical equipment is large.it can be found the total cost of GIS is no more than that of open type electrical equipment throughcomprehensive analysis, surveying and calculating and considering all kinds of favorable factors of QIS.To sum up ,with the development of GIS technology, it will be widely used in many fields such as power station, substation and so on,and it will also be the direction in which high-voltage electrical equipment technology continues to develop and its extensively used within the scope of the world in this century.This paper draws lessons from the design experiences of domestic large scale power station which uses GIS technology and combines with the 330KV GIS design of the Gong Bo Xia and Li Jia Xia power station that are designed the Northwest Investigation Design And Research Institute. This paper not only advances some common questions about GIS such as selecting model and demonstrating,compiling technology standardization of the device,layout and design, test, enviromental protection and maintenance,etc, but also supplies effective solution commonly used in engineering.