Remote - Fall 2016 - 17

Feature Article As more generator sets are added, complexity increases, and the need for an additional layer of control (a plant control system) becomes necessary. Island parallel mode is preferable when one generator set is not enough to meet the load requirements of the facility or system redundancy is desired. Considering the remote nature of most island installations, and the occasional need to shut down a generator set for routine maintenance, building redundancy into the system is a wise move. Controls play a vital role in island parallel installations because they distribute the load between connected generator sets. Multi-unit installations require an additional level of plant control, such as an MTU Master Control System (MCS), to integrate all of the individual units with the facility, assigning load to individual generator sets based on the power or heat requirements of the facility. Plant controls also provide data visualization via IPC and data-logging, which helps operators visually evaluate equipment performance and assess operating conditions. Operators also have the ability to choose whether to manage the entire plant or an individual generator set, all from the same control system. And with remote access interfaces, operators can manage the entire system remotely, providing invaluable flexibility. Remote Access Interfaces Remote access capabilities have a significant impact on CHP operations. They provide increased flexibility without compromising an operator's ability to control the system, which can be beneficial if the operator is responsible for multiple locations or if they need to access the system after normal operating hours. Additionally, remote access allows third-party service partners responsible for equipment maintenance to proactively monitor and troubleshoot, when needed. Other CHP system controllers such as the module control, which links with the interface panel engine and generator set controls by cable, can accomplish remote access by connecting directly to the Internet, making vital data and functions accessible to the operator at any time, from anywhere in the world. The operator simply logs in via VNC over a standard Internet browser using their assigned username/password (with associated access level), to see a mirror image of the control system, just as if they were standing directly in front of the module control touchscreen. The operator can then use their mouse to view system activity and adjust system parameters. If there is an alarm, the operator or service technician can log in and troubleshoot it. Remote access can also be accomplished by setting up a software interface that ties the CHP controls directly into the facility's supervisory control and data acquisition (SCADA) master control system. This is ideal when bidirectional data exchange software is desired. Key to Success Modern CHP installations can provide remote locations with flexible, reliable and efficient power. Successful installations require a wide range of equipment, seamlessly integrated with the facility's HVAC system, electrical systems and utility interconnections. Keeping everything operating safely and optimally is no small task, but thanks to advancements in control systems, it's never been easier. Christian Mueller is a sales engineering manager at MTU Onsite Energy, a manufacturer of diesel and gas-based power system solutions. For more information visit www.mtuonsiteenergy.com Follow us on Twitter @RemoteMagazine Remote Site & Equipment Management \ Fall 2016 17 http://www.mtuonsiteenergy.com

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