Whitestone Poncelet RISEC Project Final Technical Report Page: 49 of 108
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DE-EE0004573
Whitestone Poncelet RISEC Project
Whitestone Power and Communications
FY2011
would be available at a power plant computer remotely. Additionally, manual control and
programming changes to PLC set points could be executed remotely from a computer using the
SCADA interface.
Alarm Systems
Since the hydrokinetic turbine was designed for potential swift water deployment in remote
locations, some concerns were discussed concerning potential mooring component failure. A
positional monitoring system employing a Dynamic Global Positioning System coupled with an
excursion monitoring/reporting software package was specified for integration into the SCADA
control system. If the system sensed the craft moving outside of the defined excursion envelope,
an alarm would sound to indicate mooring cable failure; this system queries onboard GPS
sensors for craft position every five seconds, updates a five-year data-logged history of craft
positions and headings at a one-minute sampling rate, and additionally records alarms and events
in a data log.
The proposed positional monitoring system is tolerant of power outages and currently supports
the following industry standard communication protocols:
1. MODBUS RTU Over TCP
2. MODBUS ASCII/RTU/TCP
3. NMEA 0183
Means of Alerting Technicians
The proposed SCADA system interfaces with a Protalk CV3 alarm dialing system with cellular
amplification, integrated cellular module with voice and SMS text capabilities. This alarm
system is tolerant of power outages, and may be programmed for four different shifts, is highly
modular, and has low footprint. It will continue to dial numbers in its database until technicians
give confirmation of alarm notification.
The proposed system also has built-in radio port and public address systems which may be
programmed with redundant alert capability in after-hours situations.
An additional consideration for the SCADA monitoring/alarm system was alarm cascade. Since
the Protalk interface was capable of supporting a wide array of specific alarm messages from
digital and analog inputs, it was important that the acquisition and broadcast of craft data be
configured to give technicians optimum awareness of the mode of failure and extent in the event
of emergency involving several alarms from multiple component failures. The integrated PLC
interface would then organize the alarm cascade such that technicians would be able to
differentiate a transmission rotation stoppage caused by a debris jam from one caused by
mooring cable failure or transmission component failure. This allows emergency personnel and
technicians to best prepare themselves to address emergency situations.Page 49 of 51
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Hasz Consulting, LLC; Communications, Whitestone Power and & Engineers, CE2. Whitestone Poncelet RISEC Project Final Technical Report, report, September 23, 2011; United States. (https://digital.library.unt.edu/ark:/67531/metadc834796/m1/49/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.