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Mission-critical facilities such as hospitals, waste water plants, data centers, process-intensive, high-value manufacturing, commercial buildings, government installations and other CI&I Utility loads typically require full-rated or near full-rated emergency power systems for life safety or economic loss prevention. These systems often involve redundant generators, buses and feeders for loads--providing power to the facility to maintain operations in the event of a utility outage. Meeting emergency power requirements is a big expense, for which power is used only during utility outages. The majority of these power systems that have been or are being installed use transfer switches to separate loads from the utility during an outage, and connect the emergency generation. The transfer switches are not designed to facilitate parallel operation of the utility and emergency generation plant, nor are the controls and protection schemes. Parallel operation of an onsite facility owned generation and the utility grid could offer operational and economic benefit to both the facility and the utility.
PowerSecure said it sought to provide a solution that would meet utilities' stringent requirements for the protection and control of such DG systems. "We selected GE Fanuc's PLCs as they are able to customize the I/O and programming to meet the scalable needs of a particular installation's electrical topology," said Brian Kisner, President, NexGear Business Unit, a division of PowerSecure International. "It is also extremely survivable, and that was a key attribute when PowerSecure selected the GE Fanuc line."
PowerSecure had used hundreds of GE Fanuc PLCs in its power system solutions, including those for mission critical facilities. For its integrated switchgear and control system called NexGear, it decided again to leverage the flexibility and power of GE Fanuc Intelligent Platforms' PLC as a critical part of the NexGear system. It was imperative for the system to have the ability to perform protection, control and automation tasks to make the distributed generation system operate. The tight integration and open architecture of GE Fanuc's PLC enables high-level control, including orchestration of other digital control equipment operations, I/O interface, operator interface and SCADA interface.
The company said GE Fanuc's PACSystems RX3i, VersaMax, and QuickPanel View Operator Interface solutions offer a high degree of flexibility and scalability. They can also integrate with other intelligent systems and I/O, which was key to develop a system that could be dispatchable by a utility and monitored for operational readiness, the company said.
"As power is a mission-critical element, a distributed generation system has to be ready at a moment's notice, without fail," said Connie Chick, General Manager of GE Fanuc Intelligent Platforms Control Systems Business. "GE Fanuc's reliability was a key factor for PowerSecure, knowing that when a system has to operate in emergency mode, it leaves no room for equipment failure. The GE Fanuc-based distributed generation system enables utilities to reduce costs and eliminate downtime, as power is instantly available from the emergency onsite generation if an issue arises with the utility."
More Information:
www.gefanuc.com
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