智能变电站通常比数字化变电站增加了（ ）功能。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29461' and id < 2399549 and id<>'2399549' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29461' and id > 2399549 and id<>'2399549' order by id asc limit 5