Project: Chevron Escravos

Scope: Provide essential power for the site

For this project we provided the electrical engineering, programming and control modules to provide the essential power. We used four Caterpillar 3612 engines (supplied by MustangCAT) and generators (supplied by Kato Engineering). Due to the client's design requirement, all I/O was handled inside the remote control panel and all field mounted end devices were wired back to the remote panel.

We provided a master control panel that served to coordinate operations of the four individual units, such as synchronization and loadsharing, as well as controlling the two incoming utility breakers and the tie breaker on the essential power bus.

We used an Allen-Bradley's ControlLogix family of PLC's for controls, and the four units and master section were linked together by a redundant ControlNET network. While each of the individual generator panels had a single processor to control its respective I/O, due to it's importance in controlling the system, the master panel had redundant processors. Customer SCADA communications were handled with redundant Prosoft Modbus-TCP cards in each rack, routed through the master panel where they went to a copper-fiber switch for easy customer use.

An Allen-Bradley HMI was provided on each control panel, allowing for easy operator interface for monitoring engine status, alarm and shutdown displays, and animated gauges for all analog devices. The HMI allows the ability to change alarms and shutdowns, and also has different levels of password protected access to limit such features from unauthorized users.