Method and device for checking the operation of a photovoltaic module

A measuring instrument for checking an operation of a photovoltaic module of a photovoltaic power station, the photo-voltaic power station includes a plurality of photovoltaic modules each photovoltaic module having two terminals, the measuring instrument comprising:

• a movable sensor for measuring an electric field strength of an electric field emitted by the photovoltaic module into a surrounding environment thereof owing to an electrical voltage generated between the two terminals when solar radiation is incident on the photovoltaic module;
• wherein the electric field strength is detected during operation of the power station as a result of the solar radiation at a measurement location outside the photovoltaic module;
• and
• a unit for calculating the electrical voltage present at the photovoltaic module,
• wherein the movable sensor for measuring the electric field is an electric field mill.

A measuring instrument for checking an operation of a photovoltaic module of a photovoltaic power station, the photo-voltaic power station includes a plurality of photovoltaic modules each photovoltaic module having two terminals, the measuring instrument comprising:

• a movable sensor for measuring an electric field strength of an electric field emitted by the photovoltaic module into a surrounding environment thereof owing to an electrical voltage generated between the two terminals when solar radiation is incident on the photovoltaic module;
• wherein the electric field strength is detected during operation of the power station as a result of the solar radiation at a measurement location outside the photovoltaic module;
• and
• a unit for calculating the electrical voltage present at the photovoltaic module,
• wherein the movable sensor comprises calipers and a Hall sensor, and
• wherein the movable sensor further comprises an electric field mill.