Publications

Showing 219 results for Author: Yilu Liu

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  • Sep, 2026

    Journal

    Development and Evaluation of a Cost-Effective Behind-the-Meter Synchronized Measurement Unit for Enhanced Grid Integration

    This paper presents the development of the Inverter Based Resource Monitor (IBRM), an innovative behind-the-meter synchronized measurement unit (SMU) tailored for integration with inverter-based resources (IBRs). The IBRM distinguishes itself as a highly accurate and cost-effective SMU, offering facile deployment and connectivity to IBRs. It is equipped to conduct real-tim…

  • Aug, 2026

    Journal

    A Pulsar-Inspired Timing Framework for Power System: Optimization and Performance Evaluation

    Due to their excellent stability, neutron pulsar stars are considered promising candidate timing sources for power system applications. However, the complexity of pulsar signals necessitates advanced processing algorithms to provide accurate timing references. This paper presents the foundational framework for pulsar signal processing, serving as the basis for further opti…

  • Jul, 2026

    Conference Paper

    Coordination of Energy Storage and Distributed Generation for Voltage Control and Peak-valley Filling

    The increasing penetration of distributed energy resources (DERs) in distribution network (DN) poses challenges on voltage control. In addition, the growing integration of DERs also reshapes the traditional load profile. To comprehensively address the voltage control and peak-valley filling in DN, this paper proposes a model predictive control (MPC) based optimization fram…

  • Jul, 2026

    Conference Paper

    Measurement-informed Dynamic Aggregation of Distribution Systems

    This paper proposes a measurement-informed dynamic aggregation methodology in order to create equivalent representations of distribution systems that are compatible with large-scale transmission analysis. By optimizing an equivalent feeder parameters using time-series measurements of active power, reactive power, and voltage at the Point of Interconnection (POI), the appro…

  • Jul, 2026

    Conference Paper

    Rapid Event Detection via Synchro-Waveform Based Temporal Attention Network in Distributed Grid

    Compared with the information collected from phasor measurement units, synchro-waveforms contain high-fidelity disturbances of the grid, which can be a granular and authentic representation of measurements in the modern power system. However, the dynamic changing morphology makes it challenging to effectively capture various disturbance information from the synchro-wavefor…

  • Jul, 2026

    Conference Paper

    Understanding Regional Inertia Dynamics in CAISO from Real Grid Disturbances

    The shift from synchronous generators to inverter-based resources has caused power system inertia to be unevenly distributed across power grids. As a result, certain grid regions are more vulnerable to high rate-of-change of frequency (RoCoF) during disturbances. This paper presents a measurement-based framework for estimating grid inertia in CAISO (California Independent…

  • Apr, 2026

    Conference Paper

    Early Alarm: Robust Event Analysis for Power Systems using 1-D Fully Convolutional Network

    This work presents a novel deep learning model for early, accurate, and robust detection, recognition, and temporal localization of multi-type events in large-scale power systems. The proposed method develops a unified 1-D fully convolutional network (FCN) model that takes time series of raw frequency signals measured from a power system as input, extracts distinguishing f…

  • Apr, 2026

    Journal

    Newton-Raphson AC Power Flow Convergence Based on Deep Learning Initialization and Homotopy Continuation

    Power flow forms the basis of many power system studies. With the increased penetration of renewable energy, grid planners tend to perform multiple power flow simulations under various operating conditions and not just selected snapshots at peak or light load conditions. Getting a converged AC power flow (ACPF) case remains a significant challenge for grid planners especia…

  • Apr, 2026

    Journal

    Geomagnetically Induced Current Field Test on Large Grid-Connected Power Transformers: Analysis, Model Development, and Simulations

    Geomagnetic-induced current (GIC) flow in power grids can cause undesirable effects such as transformer overheating, harmonics, higher reactive power demand, etc. Many simulation models have been developed to study these effects, but real-world verification on modern transformer designs is rare. This paper presents the first long-duration GIC field test in the U.S. perform…

  • Apr, 2026

    Conference Paper

    Power System Resilience Considering Hurricane Storms and Generator Step-up Transformers

    Power system resilience describes the system’s ability to withstand and recover quickly from unexpected power outages due to extreme events. As society’s electrification continues at a rapid rate, it is imperative electric infrastructure is designed and operated with extra security. This work studies the impact of severe hurricane storms on the power system located along t…

  • Apr, 2026

    Journal

    Anomaly Identification of Synchronized Voltage Waveform for Situational Awareness of Low Inertia Systems

    Inverter-based resources (IBRs) such as photovoltaics (PVs), wind turbines, and battery energy storage systems (BESSs) are widely deployed in low-carbon power systems. However, these resources typically do not provide the inertia needed for grid stability, resulting in a low-inertia power system. IBRs and lack of inertia have been known to cause anomalies such as waveform…

  • Apr, 2026

    Journal

    Toward 100% Renewable Power Grids: A Review

    The transition to a 100% renewable power grid remains beset by significant technical challenges. This paper critically examines the obstacles arising from the variability and unpredictability of renewable energy sources (RES), which complicate the real-time balancing of power generation and load demand. In addition to traditional stability concerns (e.g., rotor angle, volt…

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