| 摘要 |
PROBLEM TO BE SOLVED: To obtain a gas-insulated switchgear for direct connection to a transformer which is capable of reducing the total site area of a substation, and of securing a substation equipment configuration indispensable for maintaining high reliability for the power system. SOLUTION: In a gas-insulated switchgear for connecting to a transformer, an air-insulated power equipment 11 is provided in an upper space of a tie-in point between the main body 1 of a grounding container of the switchgear and the main body 8 of a transformer grounding container to be directly connected with the main body 1, a high voltage portion of a power equipment 11 and a bushing are connected together with an air-insulated conductor, and thus a gas bushing high voltage portion and a high voltage portion of power equipment having the identical can be placed closely. Insulation distance in air of the gas-insulated power equipment can be considered above the upper space of the tie-in point between the gas-insulated switchgear and the transformer, thereby permitting further reduction in total site area for the substation. |
