Abstract: Evaluation method and system for a lightning protection system of a wind turbine with blades, the lightning protection system including a down conductor connected to earth and to each blade by conductor plates embedded in the corresponding blade. The method is configured for determining the quality of the connections between the conductor plates and the blade thereof and includes injecting direct current between two conductor plates of one and the same blade, a flow of current being generated through the segment of the blade comprised between both conductor plates, measuring the voltage at measurement points of the segment, comparing the voltages to one another, and determining the quality of the connections between the conductor plates and the blade depending on the result of the comparison.

Abstract: Evaluation method for a lightning protection system of a wind turbine with blades (P), the lightning protection system comprising a down conductor connected to earth and to each blade (P) by means of conductor plates (1, 2) embedded in the corresponding blade (P). The method is configured for determining the quality of the connections between the conductor plates (1, 2) and the blade (P) thereof and comprises injecting direct current (I) between two conductor plates (1, 2) of one and the same blade (P), a flow of current being generated through the segment of the blade (P) comprised between both conductor plates (1, 2), measuring the voltage (V) at measurement points (Pm) of said segment, comparing the voltages (V) to one another, and determining the quality of the connections between said conductor plates (1, 2) and said blade (P) depending on the result of said comparison. Associated evaluation system.