North American AC circuit outage rates and durations in assessment of transmission system reliability and availability

Ekisheva, Svetlana; Gugel, H.

doi:10.1109/pesgm.2015.7285782

Cited by 18 publications

(3 citation statements)

References 8 publications

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“…SCACOPF extends the capabilities of ACOPF by requiring that the state of the grid is secure with respect to a comprehensive list of equipment contingencies (e.g., failures of generators, transmission lines, and transformers) and sometimes under stochastic demand and/or generation [18,38]. As a result, the SCACOPF mathematical optimization problem reaches extreme scale as it needs to simulate multiple ACOPF models (routinely O (10 5 )) in order to find a secure state of the grid.…”

Section: Power Grid Optimizationmentioning

confidence: 99%

A simplified nonsmooth nonconvex bundle method with applications to security-constrained ACOPF problems

Wang¹,

Petra²

2022

Preprint

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Section: Power Grid Optimizationmentioning

confidence: 99%

A simplified nonsmooth nonconvex bundle method with applications to security-constrained ACOPF problems

Wang¹,

Petra²

2022

Preprint

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“…" (sic). This stark comparison between potential societal loses and energy cost savings, especially when considering that the probability of failure of a typical power line over a year is 0.6% (Ekisheva and Gugel 2015), motivated the study and the incorporation of security constraints in OPF problems by the late 1970's.…”

Section: State-of-the-art and Contributionsmentioning

confidence: 99%

Solving realistic security-constrained optimal power flow problems

Petra,

Aravena

2021

Preprint

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We present a decomposition approach for obtaining good feasible solutions for the security-constrained alternating-current optimal power flow (SCACOPF) problem at an industrial scale and under real-world time and computational limits. The approach aims at complementing the existing body of literature on bounding the problem via convex relaxations. It was designed for the participation in ARPA-E's Grid Optimization (GO) Competition Challenge 1. The challenge focused on a near-real-time version of the SCACOPF problem where a base case operating point is optimized taking into account possible single-element contingencies, after which the system adapts its operating point following the response of automatic frequency drop controllers and voltage regulators. Our solution approach for this problem relies on state-of-the-art nonlinear programming algorithms and employs nonconvex relaxations for complementarity constraints, a specialized two-stage decomposition technique with sparse approximations of recourse terms, and contingency ranking and pre-screening. The paper also outlines the salient features of our implementation, such as fast model functions and derivatives evaluation, warm-starting strategies, and asynchronous parallelism. We discuss the results of the independent benchmark of our approach done by ARPA-E's GO team in Challenge 1, which found that our methodology consistently produces high quality solutions across a wide range of network sizes and difficulty. Finally, we conclude by outlining potential extensions and improvements of our methodology.

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“…NERC has been collecting continent-wide transmission outage and inventory data in Transmission Availability Data System (TADS) since 2008 [51,52]. TADS has been used to (a) assess the root cause of outages on major BPS elements; (b) to calculate typical reliability indices; and to (c) identify reliability risks due to independent, common mode, and dependent outages [53][54][55][56][57][58]. The fundamental aspects of common mode and dependent outages in the power systems are presented and reviewed in [59][60][61][62][63].…”

Section: Introductionmentioning

confidence: 99%

A Risk-Based Approach to Assess the Operational Resilience of Transmission Grids

Papic¹,

Ekisheva²,

Cotilla‐Sanchez

2020

Applied Sciences

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Modern risk analysis studies of the power system increasingly rely on big datasets, either synthesized, simulated, or real utility data. Particularly in the transmission system, outage events have a strong influence on the reliability, resilience, and security of the overall energy delivery infrastructure. In this paper we analyze historical outage data for transmission system components and discuss the implications of nearby overlapping outages with respect to resilience of the power system. We carry out a risk-based assessment using North American Electric Reliability Corporation (NERC) Transmission Availability Data System (TADS) for the North American bulk power system (BPS). We found that the quantification of nearby unscheduled outage clusters would improve the response times for operators to readjust the system and provide better resilience still under the standard definition of N-1 security. Finally, we propose future steps to investigate the relationship between clusters of outages and their electrical proximity, in order to improve operator actions in the operation horizon.

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North American AC circuit outage rates and durations in assessment of transmission system reliability and availability

Cited by 18 publications

References 8 publications

A simplified nonsmooth nonconvex bundle method with applications to security-constrained ACOPF problems

A simplified nonsmooth nonconvex bundle method with applications to security-constrained ACOPF problems

Solving realistic security-constrained optimal power flow problems

A Risk-Based Approach to Assess the Operational Resilience of Transmission Grids

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