scholarly journals Efficient Day-ahead Scheduling Voltage Control Scheme of ULTC and Var of Distributed Generation in Distribution System

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Kun-Yik Jo ◽  
Seon-Ju Ahn ◽  
Sang-Yun Yun ◽  
Joon-Ho Choi
Complexity ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-16 ◽  
Author(s):  
Helbert Eduardo Espitia ◽  
Iván Machón-González ◽  
Hilario López-García ◽  
Guzmán Díaz

Systems of distributed generation have shown to be a remarkable alternative to a rational use of energy. Nevertheless, the proper functioning of them still manifests a range of challenges, including both the adequate energy dispatch depending on the variability of consumption and the interaction between generators. This paper describes the implementation of an adaptive neurofuzzy system for voltage control, regarding the changes observed in the consumption within the distribution system. The proposed design employs two neurofuzzy systems, one for the plant dynamics identification and the other for control purposes. This focus optimizes the controller using the model achieved through the identification of the plant, whose changes are produced by charge variation; consequently, this process is adaptively performed. The results show the performance of the adaptive neurofuzzy system via statistical analysis.


Author(s):  
Minh Y Nguyen

AbstractRecently, the voltage stability and control of distribution networks become challenges due to the large line impedance, load variations and particularly the presence of distributed generation. This paper presents a coordinated voltage control scheme of distribution systems with distributed generation based on on-load tap changer and shunt capacitors. The problem is to determine the optimal operation of voltage regulation devices to minimize a multi-objective function including power losses, voltage deviations and operation stresses while subject to the allowable voltage ranges, line capacity and switching stresses, etc. The problem is formulated and solved by a modified particle swarm optimization algorithm to treat the large-scale and high nonlinearity property. The proposed scheme is applied to a typical 48-bus distribution network in Vietnam. The result of simulation shows that the voltage profile can be improved while the power loss of distribution systems can be reduced significantly.


Energies ◽  
2014 ◽  
Vol 7 (10) ◽  
pp. 6477-6491 ◽  
Author(s):  
Jong-Chan Choi ◽  
Ho-Yong Jeong ◽  
Jin-Young Choi ◽  
Dong-Jun Won ◽  
Seon-Ju Ahn ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document