A dsPic-based measurement system for the evaluation of voltage sag severity through new power quality indexes

2006 ◽  
Author(s):  
C. De Capua ◽  
S. De Falco ◽  
A. Liccardo ◽  
E. Romeo
Keyword(s):  
Power Quality ◽  
Measurement System ◽  
Voltage Sag ◽  
Quality Indexes

Power quality indexes prediction based on cluster analysis and support vector machine

2017 ◽  
Vol 2017 (1) ◽  
pp. 814-817 ◽  
Author(s):  
Jie Song ◽  
Zhenzhen Xie ◽  
Jian Zhou ◽  
Xiu Yang ◽  
Aiqiang Pan
Keyword(s):  
Cluster Analysis ◽  
Support Vector Machine ◽  
Power Quality ◽  
Support Vector ◽  
Quality Indexes

scholarly journals Mitigation of Voltage Dip and Voltage Flickering by Multilevel D-STATCOM

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
M. S. Ballal ◽  
H. M. Suryawanshi ◽  
T. Venkateswara Reddy
Keyword(s):  
Power Quality ◽  
Distribution System ◽  
Reactive Power ◽  
Distribution Network ◽  
Voltage Sag ◽  
Service Interruptions ◽  
Flexible Ac Transmission ◽  
Voltage Dip ◽  
Basic Power ◽  
Ac Transmission

The basic power quality problems in the distribution network are voltage sag (dip), voltage flickering, and the service interruptions. STATCOM is a Flexible AC Transmission Systems (FACTS) technology device which can independently control the flow of reactive power. This paper presents the simulation and analysis of a STATCOM for voltage dip and voltage flickering mitigation. Simulations are carried out in MATLAB/Simulink to validate the performance of the STATCOM. A comparison between the six-pulse inverter and the five-level diode-clamped inverter is carried out for the performance of 66/11 KV distribution system.

scholarly journals Performance and analysis for improvement of power quality and voltage sag mitigation

IJIREEICE ◽  
2015 ◽  
pp. 104-109
Author(s):  
K.SIVA PRASAD ◽  
N.G.V.SATYA KUMAR ◽  
Y.PRAVEEN KUMAR REDDY ◽  
P. NAGARJUNA ◽  
G. SHOBHA
Keyword(s):  
Power Quality ◽  
Voltage Sag

scholarly journals Implementation of Voltage Stability System in Distribution Network by using D-STATCOM

2019 ◽  
Vol 8 (2S11) ◽  
pp. 3374-3379
Keyword(s):  
Power Quality ◽  
Distribution Network ◽  
Life Time ◽  
Project Work ◽  
Voltage Sag ◽  
Safe Operation ◽  
Distribution Line ◽  
Quality Issues ◽  
Transmission And Distribution ◽  
Stable Voltage

This project work presents a proposed D-STATCOM system, Which is implemented in the distribution network. In the present scenario, the customer or consumer should be supplied with a quality power. The power quality issues like voltage sag, swell, lightning surges etc, can be reduced by using several advanced techniques. Among all these power quality issues voltage sag is considered and has been compensated in this project work by using D-STATCOM. The major advantage of D-STATCOM is that instead of installing the compensating device in the transmission and distribution line, the D-STATCOM unit is implemented at the consumers premises to maintain stable voltage for the connected electrical equipment’s and also to provide safe operation of the electrical equipment’s by extending their life time. The software ie., implemented by using MATLAB Simulink and the results are also verified experimentally by a hardware unit

Voltage Sag due to Pollution Induced Flashover Across Ceramic Insulator Strings

2017 ◽  
Vol 18 (6) ◽  
Author(s):  
Subba Reddy B ◽  
Arup Kumar Goswami
Keyword(s):  
Power Systems ◽  
Power Quality ◽  
Voltage Sag ◽  
Reliable Operation ◽  
Ceramic Insulator ◽  
Voltage Dips ◽  
Utility Companies

AbstractVoltage sag or voltage dips are significant to industrial reliability. There is a necessity to characterize the feeder level power quality (PQ) and the PQ performance among various utility companies. Contamination/pollution induced flashover is the ultimate consequence of the creeping discharges across the insulator strings which induce voltage sag. These have a severe threat on the safe and reliable operation of power systems. In the present work an attempt has been made to experimentally investigate the occurrence of voltage sag/dips during pollution induced flashovers. Results show significant dip/sag in the voltage magnitude during the flashover process.

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