Cascade failures and distributed generation in power grids

Scala, Antonio; Pahwa, Sakshi; Scoglio, Caterina

doi:10.1504/ijcis.2015.067395

Cited by 23 publications

(21 citation statements)

References 19 publications

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“…Another important characteristic is that the probability distribution of the line loads looks statistically equivalent for the AC as well as the DC approximation34. Neglecting line resistances is a justified assumption because they are very small as compared to their inductive reactances31.…”

Section: Methodsmentioning

confidence: 99%

Abruptness of Cascade Failures in Power Grids

Pahwa

Scoglio

Scala

2014

Sci Rep

Self Cite

149

131

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Electric power-systems are one of the most important critical infrastructures. In recent years, they have been exposed to extreme stress due to the increasing demand, the introduction of distributed renewable energy sources, and the development of extensive interconnections. We investigate the phenomenon of abrupt breakdown of an electric power-system under two scenarios: load growth (mimicking the ever-increasing customer demand) and power fluctuations (mimicking the effects of renewable sources). Our results on real, realistic and synthetic networks indicate that increasing the system size causes breakdowns to become more abrupt; in fact, mapping the system to a solvable statistical-physics model indicates the occurrence of a first order transition in the large size limit. Such an enhancement for the systemic risk failures (black-outs) with increasing network size is an effect that should be considered in the current projects aiming to integrate national power-grids into “super-grids”.

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Section: Methodsmentioning

confidence: 99%

Abruptness of Cascade Failures in Power Grids

Pahwa

Scoglio

Scala

2014

Sci Rep

Self Cite

149

131

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“…The effects of distributed and erratic generation from renewable sources, which is a key feature in the future grid is considered in Ref. [56] where cascades in several IEEE bus networks are considered due to the overload of power lines analyzed with a DC flow power model. In Ref.…”

Section: Related Workmentioning

confidence: 99%

Power grid complex network evolutions for the smart grid

Pagani

Aiello

2014

Physica A: Statistical Mechanics and its Applications

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h i g h l i g h t s• Network design for smart grid.• Complex network for power grid design.• Effects of topology on the cost of electricity distribution.• Complex network literature topologies comparison for smart grid. a r t i c l e i n f o b s t r a c tThe shift towards an energy grid dominated by prosumers (consumers and producers of energy) will inevitably have repercussions on the electricity distribution infrastructure. Today the grid is a hierarchical one delivering energy from large scale facilities to endusers. Tomorrow it will be a capillary infrastructure at the medium and low voltage levels that will support local energy trading among prosumers. We investigate how different network topologies and growth models facilitate a more efficient and reliable network, and how they can facilitate the emergence of a decentralized electricity market. We show how connectivity plays an important role in improving the properties of reliability and pathcost reduction. Our results indicate that a specific type of evolution balances best the ratio between increased connectivity and costs to achieve the network growth.

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“…3. The betweenness from Equation (9) has been utilized to analyze the August 2003 blackout in US [147]; the topological aspects of the Italian power grid [148]; the IEEE 300-bus grid [181]; the medium-and low-voltage grids in northern Netherlands [117]; and a real high-voltage power grid in China [174]. 4.…”

Section: Analysis Of Vulnerability Metricsmentioning

confidence: 99%

“…This is the reason why the study of cascading failures in power grids (both in power transmission grids [2,8], distributed generation [9] and smart grids [10]) is currently a vibrant topic which is being profusely investigated [2][3][4][8][9][10][11][12][13][14][15]. Some historic blackouts-such as the recently one occurred in India on end July 2012 [15], those in the north-east area of US and Canada (August 14, 2003) [16][17][18], the one affecting a large portion of Italy (September 28,2003) and other countries in the European Union [19,20]-have been widely studied using both Complex Networks (CN) and Electrical Engineering (EE) tools [2,7,8,[12][13][14][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36]<...>…”

Section: Introductionmentioning

confidence: 99%

A Critical Review of Robustness in Power Grids Using Complex Networks Concepts

et al. 2015

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This paper reviews the most relevant works that have investigated robustness in power grids using Complex Networks (CN) concepts. In this broad field there are two different approaches. The first one is based solely on topological concepts, and uses metrics such as mean path length, clustering coefficient, efficiency and betweenness centrality, among many others. The second, hybrid approach consists of introducing (into the CN framework) some concepts from Electrical Engineering (EE) in the effort of enhancing the topological approach, and uses novel, more efficient electrical metrics such as electrical betweenness, net-ability, and others. There is however a controversy about whether these approaches are able to provide insights into all aspects of real power grids. The CN community argues that the topological approach does not aim to focus on the detailed operation, but to discover the unexpected emergence of collective behavior, while part of the EE community asserts that this leads to an excessive simplification. Beyond this open debate it seems to be no predominant structure (scale-free, small-world) in high-voltage transmission power grids, the vast majority of power grids studied so far. Most of them have in common that they are vulnerable to targeted attacks on the most connected nodes and robust to random failure. In this respect there are only a few works that propose strategies to improve robustness such as intentional islanding, restricted link addition, microgrids and Energies 2015, 8 9212 smart grids, for which novel studies suggest that small-world networks seem to be the best topology.

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Cascade failures and distributed generation in power grids

Cited by 23 publications

References 19 publications

Abruptness of Cascade Failures in Power Grids

Abruptness of Cascade Failures in Power Grids

Power grid complex network evolutions for the smart grid

A Critical Review of Robustness in Power Grids Using Complex Networks Concepts

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