25 citations · 73 across the 17 of their papers we have counts for
8 papers · 1 filter
Dynamic Security Assessment of Small-Signal Stability for Power Systems using Windowed Online Gaussian Process
Chao Zhai
Due to the evolving nature of power grids and model uncertainty, the online stability assessment of electrical power systems is always a challenging problem. This paper aims to pro…
Optimal Placement of Limited PMUs for Transmission Line Outage Detection and Identification
Xiaozhou Yang, Nan Chen, Chao Zhai
Phasor Measurement Unit (PMU) technology is increasingly used for real-time monitoring applications, especially line outage detection and identification (D&I) in the power system.…
A Control Chart Approach to Power System Line Outage Detection Under Transient Dynamics
Xiaozhou Yang, Nan Chen, Chao Zhai
Online transmission line outage detection over the entire network enables timely corrective action to be taken, which prevents a local event from cascading into a large scale black…
A Robust Optimization Approach for Terminating the Cascading Failure of Power Systems
Chao Zhai
Due to uncertainties and the complicated intrinsic dynamics of power systems, it is difficult to predict the cascading failure paths once the cascades occur. This makes it challeng…
Region of Attraction for Power Systems using Gaussian Process and Converse Lyapunov Function -- Part I: Theoretical Framework and Off-line Study
Chao Zhai, Hung D. Nguyen
This paper introduces a novel framework to construct the region of attraction (ROA) of a power system centered around a stable equilibrium by using stable state trajectories of sys…
Towards a Universal Approach for Identifying Cascading Failures of Power Grids
Chao Zhai, Gaoxi Xiao, Hehong Zhang +1
Due to the evolving nature of power systems and the complicated coupling relationship of power devices, it has been a great challenge to identify the contingencies that could trigg…
Identification and Analysis of Cascading Failures in Power Grids with Protective Actions
Chao Zhai, Gaoxi Xiao, Hehong Zhang
This paper aims to identify and analyze the initial contingencies or disturbances that could lead to the worst-case cascading failures of power grids. An optimal control approach i…
Contingency Identification of Cascading Failures in Power Transmission Networks
Chao Zhai, Hehong Zhang, Gaoxi Xiao +1
Due to the evolving nature of power systems and the complicated coupling relationship of power devices, it has been a great challenge to identify the contingencies that could trigg…