Abstract
For the last couple of decades, the proliferation of power electronics-based nonlinear loads in electrical systems is inevitable. An electrical distribution network of telecommunication data center service is a typical prototype of a highly penetrated network with such nonlinear loads. Consequently, well-known harmonics pollution and voltage along with current waveforms distortion are usually encountered in such an environment. This is due to the nonlinear behavior of the widespread such applications that usually produce circulating unwanted current harmonics in the network causing a lot of disturbances. As a result, power quality standards have evolved during the previous years to control these side effects and recommend limitations that have to be imposed on similar distorted networks. In this project, modeling and simulation of a typical telecommunication data center nonlinear loads based are presented. The process involves individual modeling of various power electronic applications in the data center and the modeling of the electrical network combining all loads. A full explanation of load types and their distribution in an actual prototype network is clarified. A comprehensive assessment of network power quality indices under various loading conditions is conducted and presented. The results illustrate the ranges of total harmonic distortion of line current THDi%, voltage THDv% and total power factor at each connection point. The results of the simulation model are compared with real-time measurements obtained in the previous study for the actual operating condition of the network. The simulation is carried out using MATLAB/Simulink computer software. The electrical distribution network of the data center of Al-Madar Al-Jadid company is under investigation as a case to study.