000009669 001__ 9669
000009669 005__ 20141205153142.0
000009669 04107 $$aeng
000009669 046__ $$k2008-10-12
000009669 100__ $$aChang, L.
000009669 24500 $$aPerformance and Reliability of Electrical Power Grids under Cascading Failures

000009669 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000009669 260__ $$b
000009669 506__ $$arestricted
000009669 520__ $$2eng$$aThe stability and reliability of electrical power grids are essential for the continuous operation of modern cities and also critical for preparedness, response, recovery and mitigation in emergence management. Due to the fact that present power grids in China are usually running near their critical operation points, they are vulnerable and sensitive to disturbances from natural and man-made hazards such as hurricanes, earthquakes and terrorist attacks, etc., which often trigger cascading failures. Using the provincial power grid data from Chinese power utilities including 118 buses (substations) and more than 180 branches (transformers and transmission lines), we first present the properties of the power network with modern complex network concepts such as state transition graph and characteristic length. Then the dynamic power flow over the power grid is calculated with the BPA load flow analysis software. System performance and reliability of the power grids are evaluated under an earthquake scenario and a hypothetical terrorist attack. With the identified most vulnerable (critical) edges and nodes, the robustness of the power network is evaluated under the triggered cascading failures. The findings could be useful for power industries and policy makers to evaluate the risk of blackout induced by cascading failures, and identify the vulnerability of power systems and improve the resilience of power systems to external disturbances.

000009669 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000009669 653__ $$aCascading failure, system reliability, performance, power grids, state transition graph

000009669 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000009669 720__ $$aChang, L.$$iWu, Z.$$iElnashai, A.S.$$iSpencer, B.F.
000009669 8560_ $$ffischerc@itam.cas.cz
000009669 8564_ $$s697141$$uhttps://invenio.itam.cas.cz/record/9669/files/06-0005.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 06-0005.
000009669 962__ $$r9324
000009669 980__ $$aPAPER