Insertion of wind generators in electrical power systems aimed at active losses reduction using sensitivity analysis

• ITL and SA used together provide an efficient methodology for allocation and analysis of wind generators.
• A methodology is developed to locate two wind generators into power systems to reduce their losses.
• Three case studies are analyzed, with 34, 70 and 126 buses, including 9 wind speeds in which one.
• The results show that the SA tool can be used to simulate the effect of the wind in the power system.
• The conclusion is that the SA technique may be used in addition to ITL to verify the quality of energy.

The study evaluates the electrical power system behaviour when wind turbines are inserted into the power grid. The assessment is made using a sensitivity analysis technique applied to the power flow solution. Unlike the typical algorithms, the sensitivity analysis technique does not require an iterative process, resulting in a fast method with great precision. This proposed method make easy to check the wind turbine behaviour to the changing of wind speed. Initially, the power flow solution is obtained and identified as the base case. When there are perturbations in the generators, the new solution is obtained directly by sensitivity analysis technique. The technique was applied in 34-bus, 70-bus and 126-bus test distribution system. The places chosen to connect the wind turbines were determined by the Incremental Transmission Losses method. The results demonstrate the effectiveness of the methodology. When wind turbines are inserted in the studied systems, active and reactive losses are reduced and voltage profile is improved.