As an alternative to fossil fuels, wind power is a plentiful, renewable, widely distributed and clean energy. Due to these characteristics, wind
energy has become an important player in the world’s energy markets. A large wind farm may consist of several hundred individual wind turbines
connecting to the electric power transmission network. Most wind farms are located in sparsely populated areas with harsh environments and only
a few maintenance staff. Because of their location, the problem of how to ensure the wind power plant can be operated safely and reliably is an
essential and very important issue.