AUTOMATIC DISPATCH CONTROL SYSTEM ANALYSIS USING DISCRETE FOURIER TRANSFORM TO ACHIEVE FREQUENCY STABILITY

• Main Author: Alfiandi, Radhitya
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/83382
• Institution: Institut Teknologi Bandung

The drive towards achieving Net Zero Emission goals in the future necessitates an energy transition. Power plants based on fossil fuels must be replaced with those based on new and renewable energy sources. In Indonesia, Renewable Energy Power Plants (REPPs) such as Solar Power Plants (SPPs) and Wind Power Plants (WPPs) are highly favored. These plants are susceptible to weather intermittency, causing power fluctuations. These fluctuations affect the system frequency deviation, which must operate within normal conditions according to the Grid Code. Implementing an Automatic Dispatch Control System (ADCS) can control power generation to address frequency issues. With ADCS, the system can operate automatically and be controlled to adjust to real-time conditions, such as power fluctuations due to intermittent generation. In this study, the application of ADCS for dispatch control of diesel generators and Battery Energy Storage Systems (BESS) will be examined. ADCS control will be conducted for response times of one and three minutes. Fluctuation data from SPPs and WPPs will be recorded for 30 seconds. Without ADCS control, the system's frequency deviation operates outside the normal operating range due to power mismatches between scheduled and actual power due to fluctuations from SPPs and WPPs. With ADCS control, power fluctuations can be compensated for by diesel generators and BESS. Dispatch analysis will use Discrete Fourier Transform (DFT) analysis to divide the power mismatch signal into high and low-frequency components. The high-frequency power mismatch signal will be used for BESS dispatch, while the low-frequency signal will be used for diesel generator dispatch. The research results show that the ADCS response for a one-minute response time is better than for three minutes.