Results 241 to 250 of about 7,645,365 (300)

Voltage Stability Assessment in Power Systems Using Line Voltage Stability Index

Computers and Electrical Engineering, 2018
Abstract The stressed operating conditions of transmission systems may lead to voltage collapse with consequent interruption in power supply. Therefore, it is necessary to continuously monitor the voltage stability of power system to avoid voltage collapse.
Rajive Tiwari, Saurabh Ratra, K R Niazi
exaly   +2 more sources

Evaluation of some indices for voltage stability assessment

2009 IEEE Bucharest PowerTech, 2009
The liberalization of the electricity markets causes power systems to work closer and closer to their limits. The online assessment of system security becomes a topic of paramount importance in control centers. In this context fast indices to quickly assess system security are fundamental in an on-line DSA session.
S. GRILLO, MASSUCCO, STEFANO, A. PITTO, SILVESTRO, FEDERICO   +3 more
openaire   +3 more sources

Technique for Voltage Stability Assessment Using Newly Developed Line Voltage Stability Index

Energy Conversion and Management, 2008
This paper presents an efficient technique for voltage stability assessment using a newly developed line voltage stability index that becomes half at a collapse point. Power flow equations have been used to identify critical lines, which may be vulnerable during an increased loading condition.
L D Arya
exaly   +2 more sources

Decision Trees for Voltage Stability Assessment

2020 IEEE International Conference on Communications, Control, and Computing Technologies for Smart Grids (SmartGridComm), 2020
This paper proposes two different methods to train the DTs for voltage stability assessment, which in turn can aid in deriving preventive actions that can be given as recommendations to system operators or automatic load shedding schemes. In the voltage stability indices method, the DTs are trained on contingency cases that are classified based on ...
V. S. Narasimham Arava, Luigi Vanfretti
openaire   +2 more sources

Basics of Voltage Stability Assessment

2021
In this chapter, the fundamentals of long-term voltage stability and short-term voltage stability phenomenon in power systems are described by studying the various parametric dependencies along with the respective assessment methods. Numerical techniques that enable scalable assessment of voltage stability in practical systems are described along with ...
Amarsagar Reddy Ramapuram Matavalam, Alok Kumar Bharati, Venkataramana Ajjarapu   +2 more
openaire   +1 more source

Voltage stability index for online voltage stability assessment

2015 North American Power Symposium (NAPS), 2015
This paper proposes a voltage stability index to predict voltage collapse in power system. The index is based on maximum loading capability of the bus combined with a thevenin equivalent method for the aggregated representation. The technique is applied to transmission test system. Using thevenin equivalent calculated by fast load flow or PMU data, the
Rabindra Maharjan, Sukumar Kamalasadan
openaire   +1 more source

Voltage stability assessment of a microgrid

2015 IEEE 8th GCC Conference & Exhibition, 2015
Voltage stability analysis of a power system is a necessity, particularly in the planning phase of the development or expansion of a power network. The ultimate goal of this paper is to investigate the voltage stability of Musandam (an area in the Sultanate of Oman) micro-grid during the expansion of the network.
Yousuf Al Jabri, Nasser Hosseinzadeh, Rashid Al Abri, Amer Al Hinai   +3 more
openaire   +1 more source

Assessment of voltage stability in microgrid

2016 International Conference on Electrical, Electronics, and Optimization Techniques (ICEEOT), 2016
On-line security assessment techniques use real-time measurements from different locations in a power system and continuously update the security of the system. The introduction of Phasor Measurement Units (PMU) and their use as a powerful measurement tool in power systems has made possible for fast accurate algorithms.
R. Rohikaa Micky, R. Lakshmi, R. Sunitha, S. Ashok   +3 more
openaire   +1 more source

Voltage stability indices for stability assessment: a review

International Journal of Ambient Energy, 2018
Right through the past eras, behind numerous shutdowns voltage instability was the cause. Assessment of system voltage consistently ensures safe operation.
AR Nageswa Rao, Priya Vijaya, M Kowsalya
openaire   +1 more source