Hydro Tasmania constructed a single 900kw wind turbine and 200kw solar array. The enabling system includes a 750kw/300kwh battery, a fly wheel and synchronous condenser, and 1.5MW dynamic resistors, which is transported and housed in scalable modular containerised units designed by Hydro Tasmania.
Keeping the Power Station Under Control
“For the control requirements, we chose Rockwell Automation products for all the systems because of the consistency, reliability, availability and ease of integration. This includes timely delivery support by the local Rockwell Automation Authorised Distributor, NHP Electrical Engineering (NHP),” Massie said.
NHP prides itself on providing custom solutions tailored to customers needs, supported by expert service.
The power station control system was founded on proprietary PLC code developed in-house by Hydro Tasmania and run on the Rockwell Automation system architecture, which provided seamless integration of control and communication equipment with fast and reliable delivery of data.
The system is based on distributed control with a main supervisory control that manages all distributed enablers and power generating equipment.
“We chose the Allen-Bradley® CompactLogix™ for the distributed control of the solar, battery, flywheel and switchgear because it helped to lower the cost, minimised space and IO, whereas the dynamic resistor enabler used ControlLogix® due to the large program and number of IOs,” he explained.
The main hybrid power system controller that manages all distributed enablers and power generators works to ensure reliable power and maximum diesel fuel savings. Due to the complexity of managing continuous variability in renewable energy sources and customer load, the main controller is capable of the demanding task of ensuring renewable resources are maximised and optimised.
ControlLogix control systems have the inherent speed to respond to these challenges and also has the capability for decision making to provide reliable and quality power supply to the grid.