Journal ArticleDOI
Stochastic Cascading Failure Model With Uncertain Generation Using Unscented Transform
Mir Hadi Athari,Zhifang Wang +1 more
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TLDR
This paper proposes a novel stochastic cascading failure model with full ac power flow using the unscented transform (UT) for power girds vulnerability analysis and shows that dc power flow does not provide an accurate estimation of the flow process under highly variable generation thus may underestimate the severity of the cascades.Abstract:
This paper proposes a novel stochastic cascading failure (CF) model with full ac power flow using the unscented transform (UT) for power girds vulnerability analysis. The quasi-steady state (QSS) model is built upon previous dc power flow model by incorporating several enhancements. Our analysis shows that dc power flow does not provide an accurate estimation of the flow process under highly variable generation thus may underestimate the severity of the cascades. The incorporation of full ac power flow constraints allows us to access voltage profiles dynamics during CF in order to simulate voltage-related failures in the grid. The under-voltage load shedding relays are modeled along with a stochastic time-inverse overload relay to accurately simulate the protective system response. In addition, more realistic assumptions are considered in the modeling of wind power penetration using geographical information of grid topology and wind potential map for a given geographical area. The accuracy of the estimated flow process based on UT method is examined under different operating conditions in a 500-bus synthetic network. The proposed model is benchmarked against the historical blackout data and widely used models in the literature showing similar statistical patterns of blackout size.read more
Citations
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Journal ArticleDOI
Stochastic multi-carrier energy management in the smart islands using reinforcement learning and unscented transform
Hongbo Zou,Juan Tao,Salah K. Elsayed,Salah K. Elsayed,Ehab E. Elattar,Abdulaziz Almalaq,Mohamed A. Mohamed,Mohamed A. Mohamed +7 more
TL;DR: In this paper, the authors investigated the optimal management of multi-carrier water and energy system considering the high penetration of renewable energy sources as non-dispatchable units and the seawater desalinization mechanism for serving water demand in the target area.
Journal ArticleDOI
A Graph-based Method for Vulnerability Analysis of Renewable Energy integrated Power Systems to Cascading Failures
TL;DR: Results show that power systems’ vulnerability is sensitive to the variation of renewable generation, the system would be highly vulnerable to cascades when facing a large uncertainty level that exceeds a certain range, which implies that it is important to limit power systems to operate within the allowed uncertainty range.
Journal ArticleDOI
Effects of High Level of Penetration of Renewable Energy Sources on Cascading Failure of Modern Power Systems
Xi Zhang,Chi K. Tse +1 more
TL;DR: In this paper , the authors incorporate the dynamical process of frequency control in modeling cascading failure and assessing the robustness of power systems with a high level of penetration of renewable energy sources.
Journal ArticleDOI
A survey and comparison of leading-edge uncertainty handling methods for power grid modernization
Sahar Rahim,Pierluigi Siano +1 more
TL;DR: In this paper , a comprehensive review of the literature on state-of-the-art uncertainty modeling methods is presented to identify future research trends and a comparative assessment is provided to provide a broader overview evidencing that, so far, there is no particular preeminent uncertainty handling technique.
Journal ArticleDOI
Inclusion of Pre-Existing Undervoltage Load Shedding Schemes in AC-QSS Cascading Failure Models
TL;DR: A suitable dynamic cascade model with appropriate limits and protection details that can selectively capture UVLS action is presented, thereby revealing the proximate ground truth.
References
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Journal ArticleDOI
Unscented filtering and nonlinear estimation
Simon Julier,Jeffrey Uhlmann +1 more
TL;DR: The motivation, development, use, and implications of the UT are reviewed, which show it to be more accurate, easier to implement, and uses the same order of calculations as linearization.
Journal ArticleDOI
The continuation power flow: a tool for steady state voltage stability analysis
TL;DR: In this paper, the authors present a method of finding a continuum of power flow solutions starting at some base load and leading to the steady-state voltage stability limit (critical point) of the system.
Journal ArticleDOI
DC Power Flow Revisited
TL;DR: In this paper, the authors re-examine linear MW-only ldquodcrdquo network power flow models and show that when their MW flows are reasonably correct, they can often offer compelling advantages.
Journal ArticleDOI
Short-term load forecasting via ARMA model identification including non-Gaussian process considerations
Shyh-Jier Huang,Kuang-Rong Shih +1 more
TL;DR: The concept of cumulant and bispectrum are embedded into the ARMA model in order to facilitate Gaussian and non-Gaussian process considerations, and with embodiment of a Gaussianity verification procedure, the forecasted model is identified more appropriately.
Journal ArticleDOI
Grid Structural Characteristics as Validation Criteria for Synthetic Networks
TL;DR: In this paper, the authors present a methodology and set of validation criteria for the systematic creation of synthetic power system test cases, which do not correspond to any real grid and are free from confidentiality requirements.