ANALYSIS OF VOLTAGE IMPROVEMENT FOR LOW VOLTAGE SHORE CONNECTION (LVSC)

• Main Author: Dyah Setyowati, Fauzia
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/87421
• Institution: Institut Teknologi Bandung

This study focuses on evaluating voltage stability in the Low Voltage Shore Connection (LVSC) system implemented at Tanjung Priok Port. The LVSC system is designed to replace diesel generators on ships with shore power supply, aiming to reduce carbon emissions and improve energy efficiency. One of the primary challenges in LVSC implementation is voltage fluctuation caused by inductive loads from ship motors, cable lengths, and network configurations, which can impact the electrical network stability and the operational performance of onboard equipment. Four mitigation methods were tested to address this issue: Upsize Converter, Uprate Voltage Setpoint, On-Load Tap Changer (OLTC), and Static Synchronous Compensator (STATCOM). Simulations were conducted using DIgSILENT PowerFactory software to analyze both normal and dynamic operational scenarios, including motor induction activation. Simulation results demonstrated that STATCOM delivered the best performance in maintaining voltage stability, with a fast and effective response to load variations. Meanwhile, OLTC and uprate voltage setpoint proved more effective at the substation level but were limited in handling rapid fluctuations. From a financial feasibility perspective, the installation of STATCOM yielded a Net Present Value (NPV) of Rp 1.68 billion and an Internal Rate of Return (IRR) of 10%, exceeding the Weighted Average Cost of Capital (WACC) of 8.69%, with a Break-Even Point (BEP) reached in the 11th year. This study provides technical and economic guidance to support the broader adoption of LVSC technology in enhancing the sustainability of port operations.