Results 231 to 240 of about 63,374 (271)

Complementary limit induced bifurcation theorem and analysis of Q limits in power-flow studies

2007 iREP Symposium - Bulk Power System Dynamics and Control - VII. Revitalizing Operational Reliability, 2007
Complementary limit describes a change in system structure when two variables and constants in the system model exchange their status. Complementary limits have been used in the power system literature in the past for modeling the Q limit problem in power-flow equations.
null Xunning Yue, Vaithianathan Mani Venkatasubramanian   +1 more
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Comparative Study of Voltage Security Indices in Terms of Limit-Induced Bifurcation Effect

2020 International Conference on Smart Grids and Energy Systems (SGES), 2020
This paper compares six types of major voltage security indices (VSIs) in terms of limit-induced bifurcation (LIB) effect. The compared VSIs are the voltage collapse proximity indicator (VCPI), L-index, L mn -index, minimum singular value (MSV), tangent vector index (TVI), and optimal-power-flow-based direct method (OPF-DM). These VSIs are evaluated on
Shota Omi, Yasuyuki Shirai
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Enhanced visualization of power system stability limits imposed by singularity induced bifurcations

2000 IEEE International Symposium on Circuits and Systems. Emerging Technologies for the 21st Century. Proceedings (IEEE Cat No.00CH36353), 2002
This paper attempts to provide an analytically based visualization tool for investigating the existence of singularity induced bifurcations along with corresponding singular sets of operating points in power systems. This tool is based on the solution of a set of parameter dependent differential-algebraic equations (DAE's) for analyzing power system ...
Nwankpa, C, Ayasun, SAFFET, Kwatny, HG
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Evaluation of stability limits imposed by singularity induced and saddle node bifurcations

Proceedings of the 38th IEEE Conference on Decision and Control (Cat. No.99CH36304), 2003
This paper investigates the existence of singularity induced bifurcations along with corresponding singular sets of operating points in power systems. The power system is modeled as a set of parameter dependent differential-algebraic equations (DAE's). We propose a method to identify algebraic singularity of the model and investigate the effects of the
S. Ayasun, C. Nwankpa, H.G. Kwatny
openaire   +1 more source

A fast method of voltage stability margin load for limit induced bifurcation

2013 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC), 2013
Limit induced bifurcation (LIB) of power system is usually caused by reactive power output of generators exceeds the limit. According to this feature, a fast calculation method for voltage stability load margin of limit induced bifurcation is presented.
Yao Dan, Zhong Hao
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A new bifurcation in non-smooth continuous system inducing semi-limit cycle

Physics Letters A, 2019
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Chen, D. H., Liu, Q. X., Chen, Y. M.
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Input band-pass limiting in a PLL: its influence on interference-induced bifurcation

Thirty-Sixth Southeastern Symposium on System Theory, 2004. Proceedings of the, 2004
The sum of a desired tone and an interfering, offset in frequency by v radians/second, tone is considered as the input reference signal for a system comprised of an ideal band-pass limiter and first-order PLL combination. Parameter y denotes the ratio of interfering signal to desired signal amplitudes. In the first of two cases, this two-tone reference
J. Stensby, M. Tillman
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Bifurcation-induced limits of a controller-reconfigured F-16 subject to actuator failures

Proceedings of 2005 IEEE Conference on Control Applications, 2005. CCA 2005., 2005
Complex systems like the F-16 when subject to actuator failures operate in nonlinear regimes and probably in the vicinity of bifurcation points. Therefore, in designing reconfigured controllers a designer must be aware of all bifurcation points, and their characteristics, within the impaired flight envelope.
S. Thomas, H.G. Kwatny, null Bor-Chin Chang   +2 more
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An Investigation of Limit Induced Bifurcation in Dynamic Model of Wind Power System

2011 Asia-Pacific Power and Energy Engineering Conference, 2011
In this paper the dynamic model for Limit Induced Bifurcation in wind power systems is constructed and used to locate these bifurcation points of wind farms in WSCC-9Bus system. For the sake of system stability, the Limit Induced Bifurcation is investigated under different wind speed conditions.
Yang Liu, Junyong Liu, Siming Zhang, Gareth Taylor, Youbo Liu   +4 more
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Limit Induced Bifurcation Due to Series Connected FACTS Devices During Voltage Collapse Phenomena

2006 International Conference on Industrial and Information Systems, 2006
This paper focuses on detailed steady state models with emphasize on control modes of two Flexible AC Transmission System (FACTS) devices' namely, Static series synchronous compensator (SSSC) and Thyristor Controlled Series Capacitor (TCSC), to study their effects on voltage collapse phenomena in power systems.
null Nemat-Talebi, Mostafa Shafiee, Bala Subramaniam, Javad Karamdel   +3 more
openaire   +1 more source