Results 271 to 280 of about 277,373 (307)

Reactive power control in a metro system

IEEE Spectrum, 1966
The reactive power problem will become intensified in the future with the increasing use of EHV overhead lines and high-voltage cable in densely populated areas. Generators alone, with their underexcited limitations during light load periods, may not have sufficient capability to control voltages in some systems in which substantial amounts of high ...
W. J. Balet, R. L. Webb
openaire   +1 more source

Fuzzy Control on Voltage/Reactive Power in Electric Power Substation

2009
A fuzzy method using in voltage and reactive power control in electric substation is proposed based on the improved 17 Areas Method derived from 9 Areas Method. A simulation model is founded with fuzzy control rules used the Matlab simulink. The simulation results indicate that voltage of the model with fuzzy control is less fluctuating and much ...
Xiuhua Wu, Jun-cheng Wang, Ping Yang, Zai-lin Piao   +3 more
openaire   +1 more source

Reinforcement Learning for Reactive Power Control

IEEE Transactions on Power Systems, 2004
This paper presents a Reinforcement Learning (RL) method for network constrained setting of control variables. The RL method formulates the constrained load flow problem as a multistage decision problem. More specifically, the model-free learning algorithm (Q-learning) learns by experience how to adjust a closed-loop control rule mapping states (load ...
J.G. Vlachogiannis, N.D. Hatziargyriou
openaire   +1 more source

Reactive power control by genetic algorithm

2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077), 2002
This paper presents a new approach to optimal voltage and reactive power control based on a genetic algorithm (GA), and attempts to shorten the time by use of the GA which calculates the control procedure. For this purpose, a network is decomposed into subsystems by means of region/area information, and the control times of the controller are ...
H. Aoki, Y. Mizutani
openaire   +1 more source

Voltage and Reactive Power Control

2022
John Fuller, Pamela Obiomon, Samir I. Abood   +2 more
openaire   +1 more source

Grid Voltage and Reactive Power Control

2015
A widespread inadequate control of grid voltage and reactive power has become more critical in recent years due to the general trend by system operators and electrical utilities to operate transmission networks as close as possible to their maximum capacity.
openaire   +1 more source

Study on leveraging wind farms' robust reactive power range for uncertain power system reactive power optimization

Applied Energy, 2021
Zhengshuo Li, Guangrui Wang
exaly  

Reactive power control a panacea to power stability

International Journal of Academic Research, 2012
M. Olubiwe, F.K. Opara, E.N.C. Okafor
openaire   +1 more source

Equipment for Voltage and Reactive Power Control

2015
Chapter 1 explained how voltage support requires reactive power control. In this chapter, we describe in detail the main equipment in power systems that are able to deliver or absorb the reactive power through particular aspects of control as they relate to voltage and reactive power.
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Reactive Power Control of Wind Plants

2014
The intention of this chapter is to describe a reactive power control structure for wind turbines and wind plants that provides the necessary capability to ensure a stable system voltage in the medium and high voltage grid even if no synchronous generation is present any more.
openaire   +1 more source