Results 281 to 290 of about 120,363 (295)

Voltage collapse phenomena in wind parks

18th International Conference and Exhibition on Electricity Distribution (CIRED 2005), 2005
Wind power is rapidly growing in the world. For reasons of economy the network interconnection is often designed without redundancy. This means that the nominal power of the transformer to the transmission system is in the range of the nominal power of all wind generators of a wind farm. Short circuit faults are in power systems unavoidable and cause a
G. Brauner, M. Heidl, D. Tiefgraber, M. Weniger, H. Haidvogl   +4 more
openaire   +1 more source

On the Existence of Voltage Collapse in Islanded Microgrid

2018 IEEE Electrical Power and Energy Conference (EPEC), 2018
The future smart grid entails clusters with plug-and-play features known as microgrids. Each microgrid hosts a mix of distributed energy resources including synchronous-based. Nevertheless, synchronous-based generators, are characterised by their limited reactive power capabilities which could lead to voltage collapse problem during islanding ...
A. A. Eajal, Ameen H. Yazdavar, E. F. El-Saadany, K. Ponnambalam   +3 more
openaire   +1 more source

Prediction of voltage collapse in power systems

Proceedings of Thirtieth Southeastern Symposium on System Theory, 2002
Voltage collapse is the loss of stability in a power system due to a rapid decrease in voltage causing blackouts. This paper discusses the prediction of voltage collapse of power systems. Algorithms are established which can be used to calculate the critical load point and provide information on system voltage variation with the load.
T.A. Evers, C.L. Pierre, G.L. Lebby, Y.D. Song   +3 more
openaire   +1 more source

An approach for estimating the static voltage collapse

2005 International Power Engineering Conference, 2005
The law of how the minimum absolute eigenvalue of the Jacobian matrix varies with the load of power systems is analyzed, based on which a new approach is proposed to estimate the static voltage collapse. BPA is used to calculate power flows with the increasing loads. Using the new approached method, the critical point of the static voltage collapse can
null Huang Wei, null Zhang Guohua, null Yang Jingyan, null Liu Zongqi, null Zhang Jianhua   +4 more
openaire   +1 more source

An optimal strategy against voltage collapse

[1991] Proceedings of the 34th Midwest Symposium on Circuits and Systems, 2002
An optimal strategy is presented to offer a preliminary solution to the growing concern of voltage collapse. The optimal strategy will maximize the power transfer within a given system while minimizing the necessary amount of shunt reactive power (VAr) support before voltage collapse is encountered.
V. Ajjarapu, P.L. Lau
openaire   +1 more source

Resonance and Collapse of Voltage

IFAC Proceedings Volumes, 2004
R.E. Correa-Gutiérrez, J. Collado M.
openaire   +1 more source

Voltage Stability Transition during Voltage Collapse

IEEJ Transactions on Power and Energy, 1992
Hiroshi Ohtsuki, Akihiko Yokoyama, Yasuji Swkine   +2 more
openaire   +1 more source

Voltage collapse in power systems

1996
74
openaire   +2 more sources

Computing Rare Probabilities of Voltage Collapse

This paper introduces a framework based on Large Deviation Theory (LDT) to accurately and efficiently compute the rare probabilities of voltage collapse. We formulate the problem as finding the most probable failure point (the instanton) on the stability boundary and derive both first-order and second-order approximations for the collapse probability ...
Jin, Tongtong, Subramanyam, Anirudh, Maldonado, D. Adrian   +2 more
openaire   +1 more source

Estimating the voltage collapse proximity indicator using artificial neural network

Energy Conversion and Management, 2001
exaly