Neighborhoods React Angrily To Power Plan
New York Power Authority's plan to install 10 temporary generators around New York City to meet power needs next summer faces staunch opposition, particularly in Queens, where community and business leaders fear setback to redevelopment of Long Island City waterfront; map; Silvercup Studios, major television and film facility that is preparing lawsuit, will abandon plan to build new studios because of proximity to noisy gas turbine generators; opponents charge state agency is railroading proposal through without even cursory environmental study; authorities cite urgent need to have plants in place by summer, for two or three years, until private companies can supply energy; four plants are planned for Bronx, three for Brooklyn, two for Queens, one for Staten Island and one for Islip on Long Island; authority says there are no sites in Queens other than those on East River near Queensboro Bridge; Boro Pres Claire Shulman disagrees (M)