Optoelectronics high-power control devices (Invited Paper)

1992 ◽  
Author(s):  
Jun-Ichi Nishizawa ◽  
Kazushi Dezaki
Keyword(s):  
Power Control ◽  
High Power ◽  
Control Devices

Optoelectronics high-power control devices (Invited Paper)

1992 ◽  
Author(s):  
Jun-Ichi Nishizawa ◽  
Kazushi Dezaki
Keyword(s):  
Power Control ◽  
High Power ◽  
Control Devices

Operation of Voltage Reactive Power Control Devices based on Cooperation between Two-Voltage Class Transmission Network with PV Systems to Reduce Power Loss

2020 ◽  
Vol 140 (6) ◽  
pp. 484-494
Author(s):  
Akihisa Kaneko ◽  
Shinya Yoshizawa ◽  
Yasuhiro Hayashi ◽  
Shuhei Sugimura ◽  
Yoshinobu Ueda ◽  
...  
Keyword(s):  
Power Control ◽  
Power Loss ◽  
Reactive Power ◽  
Transmission Network ◽  
Reactive Power Control ◽  
Pv Systems ◽  
Control Devices

scholarly journals Heuristic Coordinated Voltage Control Schemes in Distribution Network with Distributed Generations

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2849
Author(s):  
Seok-Il Go ◽  
Sang-Yun Yun ◽  
Seon-Ju Ahn ◽  
Hyun-Woo Kim ◽  
Joon-Ho Choi
Keyword(s):  
Power Control ◽  
Reactive Power ◽  
Voltage Control ◽  
Distribution Networks ◽  
Control Voltage ◽  
Reactive Power Control ◽  
Distributed Generations ◽  
Control Scheme ◽  
Control Devices ◽  
Node Voltage

The voltage and reactive power control (Volt/VAR Control, VVC) in distribution networks has become a challenging issue with the increasing utilization of distributed generations (DGs). In this paper, a heuristic-based coordinated voltage control scheme that considers distribution voltage control devices, i.e., on-load tap changers (OLTC) and step voltage regulators (SVR), as well as reactive power control devices, i.e., DGs, are proposed. Conventional voltage control methods using non-linear node voltage equations require complex computation. In this paper, the formulation of simplified node voltage equations accounting for changes in tap position of distribution voltage control devices and reactive power changes of reactive power control devices are presented. A heuristic coordinated voltage control scheme using the proposed simplified node voltage equations is proposed. A coordinated voltage control scheme to achieve voltage control for nominal voltage and conservative voltage reduction (CVR) is presented. The results of the proposed schemes are compared with the results from the quadratic optimization method to confirm that the proposed schemes yields suitably similar results. Furthermore, a tap scheduling method is proposed to reduce the number of tap changes while controlling network voltage. The tap position is readjusted using a voltage control performance index (PI). Simulation results confirm that when using this method the number of tap changes is reduced. The proposed scheme not only produces reasonable performance in terms of control voltage of networks but also reduces the number of tap changes made by OLTC. The proposed control method is an alternative candidate for a system to be applied to practical distribution networks due to its simplified calculations and robust performance.

Solid state power control for high power microwave systems

2002 ◽  
Author(s):  
J. Casey ◽  
P.J. Marcel ◽  
P.E. Gaudreau ◽  
J.M. Mulvaney ◽  
M.A. Kempkes
Keyword(s):  
Solid State ◽  
Power Control ◽  
High Power ◽  
State Power ◽  
High Power Microwave ◽  
Power Microwave

The Dynamic Power Control Technology for the High Power Lithium Battery Hybrid Rubber-Tired Gantry (RTG) Crane

2019 ◽  
Vol 66 (1) ◽  
pp. 132-140 ◽  
Author(s):  
Wei Hong-lei ◽  
Gu Wei ◽  
Chu Jian-Xin
Keyword(s):  
Power Control ◽  
High Power ◽  
Lithium Battery ◽  
Control Technology ◽  
Dynamic Power
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