Quanta Services
Quanta Services is the leading specialty contractor with the largest skilled labor force in North America – providing fully integrated infrastructure solutions for the utility, pipeline, energy and communications industries.
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Quanta Technology is Awarded Patent for Voltage Stability Monitoring on Transmission System Corridor
Quanta Technology, an electric power & energy technical consulting company, has been awarded a patent for a technology that will monitor voltage stability on electric power transmission corridors.
Voltage instability remains an on-going concern for the transmission system in steady-state and dynamic conditions. Reactive margin deficiencies have contributed to a large number of widespread outages worldwide. Managing impact of rapid integration of large scale renewable energy resources into the T&D system makes the release of this measurement-based methodology timely.
The new patented technology uses GPS-based synchrophasor measurements to rapidly detect voltage instability without relying on the accuracy of the system model and is significantly more accurate than conventional voltage measurements. The methodology dynamically adapts to changes in status and corridor configuration for more accurate detection of an index indicating proximity to the voltage stability boundaries.
“The industry has long recognized the importance for voltage instability and we are pleased the technology has advanced to point that measurement-based tools are available to assist the real-time operation.” said Damir Novosel, president of Quanta Technology. “We are proud to announce the availability of this patented technology to provide a voltage stability measurement-based tool to assist utilities in future projects.”
Traditional voltage assessment tools rely on SCADA or energy management systems to detect instability and require accurate and detailed model. However, those tools don’t offer the speed needed to react to fast-developing dynamic disturbances and prevent a large scale system outage. The new patented methodology can also be used in conjunction with traditional model-based systems for real-time operation as well as for EMS model validation.
This patent represents a novel and well-tested real-time voltage instability indicator (RVII) method for monitoring of a transmission corridors in power systems based on synchrophasor measurements at both sides of the corridor. The technology is in the process of being validated for deployment at major utilities in North America and also internationally.
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