Analisa Perbaikan Profil Tegangan Sistem Tenaga Listrik Sumbar Menggunakan Kapasitor Bank dan Tap Transformator

• Main Authors: Akbar Abadi, Syafii
• Format: Article
• Language: English
• Published: Universitas Andalas 2015-09-01
• Series: Jurnal Nasional Teknik Elektro
• Subjects: Voltage stability; Capacitor bank; Tap transformator; Voltage drop; System losses
• Online Access: http://jnte.ft.unand.ac.id/index.php/first/article/view/145/150

Voltage stability evaluation is needed to get the information of electrical power distribution system performance. Power flow calculation is used to determine the important parameters of power system in a steady state. An electric power system must have voltage value that does not exceed the limits of tolerance and the power loss as well as small. The improvement of voltage profile can be done by using voltage-control equipments, such as capacitor banks and transformer tap. Through simulation using the PowerWorld simulator, the value and location of capacitor banks and transformers tap will obtained in order to improve system performace. Sumbar electrical system was used in this study. From the simulation results, for the initial condition of the system, there are several buses that have voltage drop with total system losses 14.4 MW. After capacitor added, the system voltage has increased significantly so that no one passed the value of tolerance and the losses in the system down to 14.1 MW. As for setting the ratio of tap transformer, voltage system did not change so much, except on the secondary side of the transformer bus arranged with system losses almost the same that equal to 14.4 MW. For the case of the addition of the capacitor and transformer tap settings in the same time, the voltage drop no longer exceeds 5% and the total system losses decreased to 13.9 MW.