THE COMPARISON OF STATIC WATT COMPENSATOR AND BATTERY ENERGY STORAGE SYSTEM FOR FREQUENCY STABILITY CONSIDERING SMELTER

• Main Author: Ayu Mudhiah Fahren, Amirah
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/47889
• Institution: Institut Teknologi Bandung

Smelting is a process of refining raw mineral materials that use an electric arc furnace working principle, which converts electrical energy into heat energy to melt raw ore. Electric arc furnaces are non-linear loads that consume large amounts of power and change very quickly over time. The characteristics of electric arc furnaces that fluctuate rapidly may cause several problems such as system frequency instability. To avoid the intermittency of an electric arc furnace, a Static Watt Compensator or Battery Energy Storage System (BESS) can be used. Both of these technologies can maintain system frequency stability by compensating active power fluctuations of smelter load. In this study, the use of SWC with BESS will be compared in terms of performance, sizing, and cost. The results show that SWC maintains system frequency by absorbing active power and can only overcome the system's over-frequency condition. Whereas BESS maintains system frequency by supplying or absorbing active power so that it can overcome both over-frequency and under-frequency conditions. However, the use of SWC increases system losses, which causes the total cost of SWC become slightly higher than BESS.