Load Flow Analysis on STATCOM Incorporated Inter-Connected Power System Networks Using Newton Raphson Method

With the advancement of technology the demand of electrical energy has also increased. The demand of electricity has become the parameter of growth of a nation. An electrical utility company has to use its existing transmission capacity to feed the ever increasing demand of electricity, due to the transmission lines has to be operated near its thermal stability limit. Operating the lines in close proximity to or above thermal stability limits makes system vulnerable to faults moreover it also increases the losses in the system. One way to increase the transmission capacity of the system without operating it to its thermal stability limit is to provide reactive power compensation at various locations. Reactive power reparation improves the voltage profile of the system, increase the power transfer in the lines and reduce losses. STATCOM is one such device that is used for reactive power compensation. It provides reactive power compensation thereby improving the voltage profile of the system. In this thesis reactive power compensation is attempted using STATCOM. To study its effect Load flow study is performed on IEEE (Institute of Electrical & Electronics engineer) 5 bus, IEEE 14 bus and IEEE 30 bus with and without STATCOM and the results are then compared to show the effect of STATCOM on the system. Newton Raphson method is used for the load flow study of the system. Simulation is done using MATLAB (Matrix Laboratories).