To build an power plant scale solar field, the client required integration of the full spectrum of utility grade photovoltaic power generation equipment including inverters, trackers, soiling monitoring stations, meteorological stations, substation power meters, and relays into a single SCADA system. The client required technology that their maintenance and operations groups were familiar with for long term operational support.
A full Allen-Bradley / Rockwell Software package was implemented, including a CompactLogix PLC acting as the plant master controller, Micro series PLCs acting as local data concentrators, a distributed FactoryTalk View SE HMI system for plant monitoring and control, and a FactoryTalk Historian for data collection. The plant master controller collects data from all of the Micro820 PLCs via Ethernet\IP, as well as gathering soiling, meteorological, tracker, and substation data from devices throughout the plant via Modbus TCP using its in-rack Prosoft Modbus TCP modules.
Benefits Received by Client:
The resulting SCADA system connected all components of the solar field, providing an intuitive interface through which it was possible to interact with equipment from a variety of manufacturers in one seamless graphical environment. The system requires minimal training while still allowing maximum effectiveness for operation, control, and troubleshooting of the plant.