MISO – synchrophasor technologies enhance grid awareness


Richard Doying,
Executive VP,
(METERING.COM) — July 29, 2013 – MISO has introduced new synchrophasor technology in its real time system operations for grid monitoring and analysis.
Synchrophasor technologies use phasor measurement units (PMUs) to collect data from more than 344 installed devices at a frequency of 30 times per second. The data is GPS time-stamped, enabling measurements from different locations to be time-synchronized and combined to create a detailed, comprehensive wide area assessment of system conditions.

With the synchrophasors, MISO’s system operators now view vital voltage and current measurements at any one of hundreds of strategic points along the interconnected transmission network at a level that was previously impossible to reach. With this data MISO can better detect, diagnose and prevent system disruptions, in effect, creating a smarter grid.

“Incorporating these new technologies into real time operations greatly increases our situational awareness of grid activity, and is essential to our effort to modernize the grid,” said Richard Doying, executive vice president of operations and corporate services. “Synchrophasor technologies provide us with unprecedented data on situations that could radically affect reliability.”

In 2010, MISO was awarded a $17.25 million Smart Grid Investment Grant to support the development and deployment of PMUs as part of the DOE’s effort to modernize the power grid. MISO members received a one-year extension to install additional synchrophasors at no extra cost.

As part of the project, MISO’s team of engineers pioneered a new feature for control room displays called enhanced real-time display (eRTD) to give system operators a unique geospatial visualization of grid activity. eRTD also provides two way visualization of real time grid activity, so now participating transmission owners have the advantage of seeing the same displays as MISO control room operators.

The three-year project involved 17 MISO transmission owners. Next, MISO intends to continue seeking new ways to extend the value gained from this technology by integrating it into our state estimator tool, incorporating use of the technology with additional transmission owners, and data sharing with the entire Eastern Interconnection.