Patent ID: 8177509

Claim:
A wind turbine blade with a lightning protection system ( 1 , 101 , 201 ), wherein the blade ( 1 , 101 , 201 ) is a shell body made of a composite material and comprises a root area and a tip end, and wherein the lightning protection system comprises: at least one lightning receptor ( 3 , 103 , 203 ) arranged freely accessible in or on the shell unit surface at or in the immediate vicinity of the tip of the blade ( 1 , 101 , 201 ), and a lightning conductor ( 2 , 102 , 202 ) made of electrically conductive material extending within the shell body along substantially the entire longitudinal direction of the blade ( 1 , 101 , 201 ), and wherein the lightning receptor ( 3 , 103 , 203 ) and the lightning conductor ( 2 , 102 , 202 ) are electrically connected by means of a connection area, characterized in that the lightning conductor ( 2 , 102 , 202 ) in its entire longitudinal direction as well as the connection area between the lightning conductor ( 2 , 102 , 202 ) and the lightning receptor ( 3 , 103 , 203 ) is electrically insulated in order to prevent the built-up of streamers and/or leaders.