0000902219-98-000339 SC 13G/A 1 19980210 NYSE CALPINE CORP 0000916457 4991 770031605 CA 1231 SC 13G/A 34 005-48317 98528106 50 WEST SAN FERNANDO ST SAN JOSE CA 95113 4089955115 50 W SAN FERNANDO SUITE 500 SAN JOSE CA 95113 WELLINGTON MANAGEMENT CO LLP 0000902219 0000 042683227 MA 1231 SC 13G/A 75 STATE STREET BOSTON MA 02109 6179515000 75 STATE STREET BOSTON MA 02109 WELLINGTON MANAGEMENT CO 19930426 SC 13G/A 1 000090221998000339-001-seq1-sc-13g-a.txt 13G FILING