Recent Advances in High-speed Grid Measurements and its Applications in Future Power Systems

Dear Colleagues,

Electric power systems are among the most critical infrastructures in society, and it is difficult to imagine a society without electricity. Energy is on the cusp of a new era as the climate change has been driving society decarbonization and electrification of our energy system. A key step toward achieving the goal is the transition to renewable sources such as wind, solar, and hydropower, and electric vehicles. The future power system with a high penetration renewable could become a more dynamically changed energy system due to lack of enough large rotating inertia, and fast varying power electronics converters.

Grid monitoring system is one of the fundamental and critical components for power grid operation, safety, and control. A more dynamically changed and distributed power grid in the future will bring new challenges and opportunities to grid monitoring system in many aspects such as measurement, communication, and data analytics.

Synchronized phasor measurement units (PMUs, or Synchrophasors) that provide phasors measurements of voltages and currents at power substations, have been providing unprecedented situational awareness capability to power grid operation, control, and protection in last two decades. In recent years, the technology development, and applications of synchrophasors for power grid at distribution level has been gaining popularity with the increasing penetration of distributed energy resources (DERs) in power grid; however, many questions and problems need to be addressed before we could see a large scale deployment of synchrophasor technology in distribution systems such as hardware cost, deployment strategy, use cases, communication architecture, measurement algorithms, and data management.

Besides synchrophasors, some other high-speed measurements such as synchronized instantaneous voltage and current waveform measurements are also needed and critical for understating the behaviours, and modelling of power electronics converters of DERs and their interactions with bulk system during system dynamics and transients. The current solution of waveform measurements by grid instruments such as Digital Fault Recorders (DFRs) can hardly meet future needs due to high device, deployment, and maintenance cost.

This Special Issue aims to present and disseminate most recent advances in high-speed grid measurements and its applications for the future power grid with a high penetration of distributed energy resources.

Topics of interest include, but are not limited to:

• High-speed synchrophasor measurements for distribution systems.
• Robust, reliable and accurate synchrophasor measurements methods in harness measurement environment, e.g., power system transient faults and dynamics, high frequency oscillations, heavy harmonics and noise.
• Low-cost and easy-to-deploy synchrophasor and waveform measurement monitor.
• Computationally efficient synchrophasor measurement algorithms.
• Innovative and low-cost instantaneous waveform measurements.
• Real-time measurement data streaming methods for high-speed synchrophasors and waveforms.
• Data compression technologies for high-speed grid measurements.
• Data analytics and applications of high-speed grid measurements.
• Field applications.

Dr. Lingwei Zhan
Dr. Yilu Liu
Dr. Lin Zhu
Prof. Dr. Wenxuan Yao
Dr. Yi Zhao
Guest Editors

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