Blackout Prevention in the United States, Europe, and Russia

Makarov, Yuri V.; Reshetov, V.I.; Stroev, A.; Voropai, I.

doi:10.1109/jproc.2005.857486

Cited by 195 publications

(90 citation statements)

References 4 publications

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“…A number of blackout defence frameworks for power systems have been established to cope with power system security in different countries or regions [23], including the United States, Europe, Russia [24], India [25], Canada [26], and Brazil [27]. A system that can successfully avoid extreme contingencies would reduce the need for operational constraints that reduce the risk of contingencies by operating the power system in a conservative manner [28].…”

Section: Blackout Defence Systemsmentioning

confidence: 99%

Primary energy congestion of power systems

Xue

Cai

James

et al. 2013

J. Mod. Power Syst. Clean Energy

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Primary energy has the potential to bring challenges to the reliability, economic, and eco-friendliness of global electric power systems. The concept of electric power security are proposed, including many factors that are not considered in power system reliability analysis, such as coal supply for power system, fuel price for electricity power market, carbon emissions of power generation, and so on. It is broader than power system reliability and security, which means that providing energy in the form of reliable, economical, and eco-friendly electric power. Following an account of existing blackout defence methods and systems, the processes of transforming various kinds of primary energy into electric power and the interactions between them are described, particularly with regard to flows of energy, capital, and information. Factors that limit the liquidity of these flows are defined as ''generalized congestion'', and the challenges presented by primary energy are named ''primary energy congestion''. China's dilemma on coal supply for power generation is presented in some detail as an example of primary energy congestion. To cope with impacts of the primary energy on electric power systems, an idea is introduced to extend the scope of existing coordinated blackout defence systems to account for primary energy, which would lead to an integrated tool to provide decision support to power system operators accounting for primary energy congestion.

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Section: Blackout Defence Systemsmentioning

confidence: 99%

Primary energy congestion of power systems

Xue

Cai

James

et al. 2013

J. Mod. Power Syst. Clean Energy

View full text Add to dashboard Cite

show abstract

“…On the other hand, a lack of situational awareness-particularly in observing the voltage phasor angles over a wide area-has been cited as a significant cause to a number of blackouts [4,5]. A postmortem analysis of the August 2003 Northeast blackout revealed that the voltage phasor angle difference between Cleveland and Michigan had been slowly diverging for nearly an hour before the start of the actual blackout [6].…”

Section: Introductionmentioning

confidence: 99%

Spurious Critical Points in Power System State Estimation

Zhang

Lavaei

Baldick

2018

Proceedings of the 51st Hawaii International Conference on System Sciences

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The power systems state estimation problem computes the set of complex voltage phasors given quadratic measurements using nonlinear least squares (NLS). This is a nonconvex optimization problem, so even in the absence of measurement errors, local search algorithms like Newton / Gauss-Newton can become "stuck" at local minima, which correspond to nonsensical estimations. In this paper, we observe that local minima cease to be an issue as redundant measurements are added. Posing state estimation as an instance of the quadratic recovery problem, we derive a bound for the distance between the true solution and the nearest spurious local minimum. We use the bound to show that critical points of the nonconvex least squares objective become increasing rare and far-away from the true solution with the addition of redundant information.

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“…In the recent decades, a few serious power system contingencies occurring around the world pertinent to voltage collapse have drawn wide attentions for electrical engineers [1][2]. Over the years, a variety of analyzing methods have been proposed to give insight into the mechanism and assessment of voltage stability.…”

Section: Introductionmentioning

confidence: 99%

An Analytical Solution for Voltage Stability Studies Incorporating Wind Power

Lin¹,

Shi²,

Yao³

et al. 2015

Journal of Electrical Engineering and Technology

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-Voltage stability is one of the most critical security issues which has not yet been well resolved to date. In this paper, an analytical method called PQ plane analysis with consideration of the reactive power capability of wind turbine generator and the wake effect of wind farm is proposed for voltage stability study. Two voltage stability indices based on the proposed PQ plane analysis method incorporating the uncertainties of load-increasing direction and wind generation are designed and implemented. Cases studies are conducted to investigate the impacts of wind power incorporation with different control modes. Simulation results demonstrate that the constant voltage control based on reactive power capability significantly enhances voltage stability in comparison of the conventional constant power factor control. Some meaningful conclusions are obtained.

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Blackout Prevention in the United States, Europe, and Russia

Cited by 195 publications

References 4 publications

Primary energy congestion of power systems

Primary energy congestion of power systems

Spurious Critical Points in Power System State Estimation

An Analytical Solution for Voltage Stability Studies Incorporating Wind Power

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