FAULT AND STABILITY ANALYSIS OF A POWER SYSTEM NETWORK BY MATLAB SIMULINK

Contact no: 7890220622 ABSTRACT- The steady state operating mode of a power system is balanced 3 phase ac. However, due to sudden external or internal changes in the system, this condition is disrupted. When the insulation of the system fails at one or more points or a conducting object comes in contact with a live point, then short circuit or fault occurs. As power lines are heavily interconnected to the systems. So fault analysis is very important for stability analysis. The one section faults will cause serious effects to other sections also. This idea has been analysis through this paper. In first case we have take a sample IEEE 14 bus system and creates the fault in one locations and which detects by the protection devices and clears but this fault is also creates the instability of voltages in nearby system(in bus----).As we know that relay circuit has detects the faults and give the tripping signals to the circuit breakers and circuit breakers open the faulty line from healthy lines but sometimes it requires delay that system will balanced by itself, but here we see that within delay timing this fault will effects other lines also and voltage will decrease from there rated conditions. So we must need to improve and analysis whole system to maintaining reliable supply to other lines. This work has been studied through mat lab. Keywords- software analysis, mat lab model,fault analysis, graphical analysis, stability analysis, improvement of stability, powe