PMU-based Real-Time Damping Control System Software and Hardware Architecture Synthesis and Evaluation Paper No: 15PESGM0516 M. Shoaib Almas msalmas@kth. se Associate Professor, Docent Electric Power Systems Department KTH Royal Institute of Technology Stockholm, Sweden Special Advisor in Strategy and Public Affairs R&D Department (FoU) Statnett SF Oslo, Norway PhD Candidate Electric Power Systems Department KTH Royal Institute of Technology Stockholm, Sweden Dr. Luigi Vanfretti [email protected]Eldrich Rebello [email protected]MSc. Thesis Student Electric Power Systems Department KTH Royal Institute of Technology Stockholm, Sweden
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PMU-Based Real-Time Damping Control System Software and Hardware Architecture Synthesis and Evaluation
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PMU-based Real-Time Damping Control SystemSoftware and Hardware Architecture Synthesis and
BackgroundLow-frequency, electromechanically induced, inter-area oscillations are of concern in the continued stability of interconnected power systems.Wide Area Monitoring, Protection and Control (WAMPAC) systems based on wide-area measurements such as synchrophasor (C37.118) data can be exploited to address the inter-area oscillation problem.What did you do?
1. Developing a hardware prototype of a synchrophasor-based oscillation damping control system
2. A Compact Reconfigurable Input Output (cRIO) controller from National Instruments is used to implement the real-time prototype
Expectations?3. To document the software development process and challenges faced in the real-time
implementation of a wide-area control system.4. Hardware-in-the-loop experiment constructed around the eMEGASIM real-time
simulator from OPAL-RT for performance analysis of the developed hardware prototype
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Results• What did you discover/find out?
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Final architecture as implemented for the prototype
• PMU-based Phasor POD Algorithm for FACTS deployed in NI-cRIO FPGA.
• RT-HIL Testing performed by using Opal-RT and SEL PMUs.
• PMUs resolution set to 50 msgs/sec
Opal-RT PMUs Prototype WAPOD
synchrophasors3-phase
VoltageCurrent
Feedback Control
Conclusions/Recommendations
• Conclusion– A hardware prototype of a real-time power oscillation damping control system was
developed and tested. – The developed prototype uses a real-time implementation of a wide-area control
system.
– Figure (left) shows the performance of the controller with two different inputs, active power and voltage angle difference.
– Though this performance is not identical to that observed in simulations, it indicates that the real-time implementation of the algorithm was successful.
• Issues: Scaling, Signal to Noise Ratio, Amplifiers, Pre-processing of PMU data, communication delays– The damping signal generated by the hardware controller was captured on an