Turbine Control and Monitoring with the Phaser®

Turbine Control The Phaser® is a valuable tool in independent energy applications such as wind energy power plants, which are often called “windfarms.”

The Phaser is at home at the core of the turbine controller. It can produce analog signaling or communications port data directly to the machine’s PLC for controlling power output by blade pitch adjustment or inverter operation. The Phaser’s high speed (2½ cycle) processing of all electric variables makes it fast enough for local protective relaying, too. Local protective relaying means disconnecting the turbine from the local grid in case of an electrical problem on either side. The Phaser can detect “islanding” with its milli-Hertz accurate frequency measurement, miswiring with phase sequence detection, and all sorts of other conditions common to weak grids and novel projects.

All these features are available in a single basic Phaser. A single Phaser in the control cabinet can replace a long DIN rail of specialized electrical gear for the cost of a good Watt/VAR transducer.

On the monitoring and SCADA side, the Phaser also provides 0.2% ANSI C12.20 metering accuracy to find out how the machines are doing. Phasers have been installed at several windfarms on both the generator and distribution sides of the step-up transformers at each turbine. The Phaser’s performance with distorted and low power factor generation makes it ideal for tracking VAR compensation deficiencies and power quality disturbances, not to mention contracted machine performance.

Phasers end up all over the distributed generation site. They fit nicely into VAR compensation capacitor bank cabinets, and into the sub-metering panels that make it possible to accurately track revenues for multiple project owners.

And of course, installing Phasers at the feeders and utility interconnect provide substation data suitable for control and subsequent telemetering to the interconnected utility's nearest RTU.
Solutions
More Information