Analysis and Study of 220 kV Substation GIS Expansion Scheme
Due to its high reliability,GIS equipment is widely used in power grid infrastructure projects,but the equipment has some disadvantages,such as long time and large area of power outage for expansion. This paper takes 220 kV GIS equipment in 220 kV substation as the expansion object,and discusses the expansion and maintenance power outage plan in the case of whole interval expansion and reserved interval expansion respectively.Through comparative analysis,the expansion scheme with the least impact on the normal power supply system is obtained,which is determined as the construction scheme of the standby in-terval in this period.
gas insulated metal closed switchgearwhole interval expansionreserved interval expansionpower outage
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