Power Quality Evaluation in Electrical Power System after Interconnection with Wind Farm

The substantial power demands of the electric power system may be satisfied by the addition of sources of renewable energy such as wind power plants. The electric load is unable to directly utilise the electricity that is produced by the wind power plant because the variable wind speed causes the output power of the generator to likewise be variable, which prevents direct use of the power produced by the wind power plant. In order for the direct current (DC) system in the wind power plant to be able to be linked to the electric field system, it will first need to be converted to alternating current (AC). Therefore, the wind power plant requires the installation of power electronics equipment in order to resolve these issues. In addition to this, the quantity of power electronic equipment that is linked to the electric power system has the potential to introduce additional issues, such as an increase in harmonic distortion. If the level of harmonic distortion is too high, it may cause the sinusoidal current and voltage waves to become irregular, which in turn causes damage to the equipment that is around the power system. This research’s goals are to present an overview of the rising harmonic distortion in power systems and propose ways to decrease harmonic distortion to a safe level of harmonic distortion tolerance. Specifically, the study will focus on the former goal. In the section under “Method,” numerous different scenarios are constructed so that the outcomes of the simulation may be compared to one another. Because of its huge capacity, which may reach up to 3 MW, the utilisation of a wind power plant is referred to as a wind farm in this investigation. First, a measurement of the amount of harmonic distortion that exists in the electricity system before the wind farm is connected to it. The second scenario involves monitoring the harmonics after the connection has been made to the wind farm. In this third scenario, a harmonic filter is used to cut down on the amount of distortion caused by harmonics in the power supply. Scenario 4, eliminating harmonic distortion by utilising a mix of detuned reactors and harmonic filters.