Special Protection System (SPS) Designing and Testing Based on Vulnerability and Frequency Security Index: Case Study of Batam-Bintan System, Indonesia

This paper will be focused on designing Special Protection System (SPS) for Batam-Bintan System in Indonesia. This study will conduct a method to design event-based and parameter-based SPS based on identified vulnerable points. The designed algorithm will be tested to the 24 hours load curve in a weekday and a weekend. Frequency Security Index (FSI) will be a main indicator to compare performance between SPS and existing protection scheme. From calculation, there are identified 8 contingency points that have a significant difference in vulnerability index (Vu) when compared to the Vu value during the normal operating conditions. After design process of SPS based on power balance between generation and load is conducted, the suitable algorithm for the loss of generator block is event-based and for the loss of lines is parameter-based. This paper also conducts a method to find an arming value for parameter-based algorithm based on frequency response after disturbance. From the simulation results, SPS could improve the FSI value of Batam-Bintan System for each vulnerable test point. It can be concluded that SPS could accelerate the power balance in the system, thus frequency stability can be achieved faster.