Abstract
This paper reviews the evaluation of power system transient stability of 330KV Nigeria network. Transient stability is very important basically from the view of determining the maximum amount of power that can be transmitted without instability being experienced in a steady state condition or as a result of load changes or faults. Prospective stability glitches are still the most critical barriers to maximizing power transfer across interconnected power system like Nigerian national grid. Occurrence of transient instability problems may result to large excursion of the system machine rotor angle, and if remedial action fails, loss of synchronism among generators may result in total system collapse. A fault can occur as a result of short circuits between transmission line phases or between a phase and the ground. The type of fault that was introduced to the network was a three phase fault which was applied on the transmission between Oshogbo to Sapele. During the course of this simulation, it was observed that after the fault has been cleared, it was observed that the speed of the generator dropped below its nominal value (0.99371) against the actual value (0.99417) which also caused the rotor angle to increase. It also caused the system to regain stability after about 18.55 seconds. After connecting the shunt capacitor it was also observed that after the fault has been cleared, the speed, the rotor angle and the real power were operating at nominal values. It is very important to point out here that increasing the number of parallel lines between two points in a common means of reducing reactance. When a parallel transmission lines are used instead of a single line. Some power is transferred over the remaining line even during a three-phase fault on one of the lines unless the fault occurs at a paralleling bus. Finally, reliable and safe power system are critical for any successful operation. A well-designed system ensures robust performance and maximizes plant availability under all operating conditions, including transient conditions like motor starts, non-linear loads and generator loss. Effects of poorly designed systems including outages, faults poor power quality and arc flashes can result in income and production losses, or worse, personnel injuries.
Keywords
Transient Stability, Power Flow, Instability
Citations
IRE Journals:
Ochogwu Sunday Okpe , Atuchukwu John , Obi Obinna Kingsley
"Evaluation Of Power System Transient Stability Of 339KV Nigeria Network " Iconic Research And Engineering Journals Volume 3 Issue 2 2019 Page 433-438
IEEE:
Ochogwu Sunday Okpe , Atuchukwu John , Obi Obinna Kingsley
"Evaluation Of Power System Transient Stability Of 339KV Nigeria Network " Iconic Research And Engineering Journals, 3(2)
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