Implementation of reliable high-speed islanding detection, zone interlocking, and source selection schemes using smart algorithms

摘要

The Valero Bill Greehey Refineries West Plant houses on-site generation and is interconnected to the utility via a looped power system. With the on-site generators not having the capacity to carry the entire plant load, this plant relies on importing power from the utility. Valero upgraded their medium-voltage protection system and was looking for a fast, deterministic, reliable, and cost-effective solution to protect their medium-voltage busbars as well as a local-area measurement-based generator islanding detection system to protect their generator equipment.