DESIGN AND IMPLEMENTATION OF A DIGITAL SIGNAL PROCESSOR CONTROLLED STATIC SMART SWITCH FOR MICROGRID SYSTEMS

In today's world, the demand for energy is steadily increasing, a fact known to be directed at different energy sources to meet this demand. The extent to which traditional energy production methods are sustainable and the damage to the environment are just a few of the facts that are still unresolved. One of the best solutions to this unpredictable problem today is to lean towards Renewable Energy Resources, but the traditional network infrastructure can not make the maximum benefit from renewable energy sources, and because the power of renewable energy resources is often expressed by probability functions, it is a reliable source when used with traditional network infrastructure. the operation of renewable energy sources as distributed generation plants under the microfabric infrastructure has resulted in many more benefits such as a much more stable network and the failure of loads to be cut off due to a possible mains failure. In the event of a possible mains failure due to some safety concerns, the grid-tie inverters must detect that the mains network has been disconnected and to isolate themselves from the mains according to various standards (IEEE 1547 etc.), otherwise it may be that the grid-tie inverters may be damaged, will not. At this point, our expectation from our microgrid will be to isolate itself from the main network and continue to reliably feed the local loads, and if the main comes back again, it will be properly connected back to the main. Unfortunately, it is not possible to detect if the main is interrupted by checking whether there is an electrical voltage in a wire formed by a microgrid infrastructure. There are various methods in the literature to perform this control process and it is aimed to perform the thesis study based on one of these methods. In the basic method, it is aimed to interpret the changes made by processing the various values (voltage, frequency etc.) taken from the common connection point between the microgrid and the main and to transmit the calculated data to the computer and drive the switch at the common connection point as a result. It is aimed that the drive speed, reliability and lifetime are better by selecting the switch to be used as a semiconductor switch (triac). It is intended that the algorithms to be run using DSP (Texas Instruments - TMS320F28377s Delfino) type microcontrollers are performance and decision tree can be decided much faster. This thesis project was performed firstly in Matlab / Simulink simulation environment and implementation of the project according to the results obtained. Keywords: Islanding detection, harmonic signature, dsp signal processing, dft application, static switch application