Voltage control strategy for integrated medium and low voltage distribution network based on active-reactive power coordination optimization

2020 ◽  
Author(s):  
Baozhi Ping ◽  
Xiao Zhang ◽  
Qiang Song ◽  
Yongjin Yu ◽  
Na Wu ◽  
...  
Keyword(s):  
Control Strategy ◽  
Reactive Power ◽  
Low Voltage ◽  
Distribution Network ◽  
Voltage Control ◽  
Voltage Distribution ◽  
Voltage Control Strategy

The reactive power voltage control strategy of PV systems in low-voltage string lines

2017 ◽  
Author(s):  
Feng Zhang ◽  
Xiaolong Guo ◽  
Xiqiang Chang ◽  
Guowei Fan ◽  
Lianger Chen ◽  
...  
Keyword(s):  
Control Strategy ◽  
Reactive Power ◽  
Low Voltage ◽  
Voltage Control ◽  
Voltage Control Strategy ◽  
Pv Systems

scholarly journals Adaptive Voltage Control of Distribution Network with High Proportion PV

2021 ◽  
Vol 252 ◽  
pp. 01033
Author(s):  
Junchao Ma ◽  
Xiaoming Huang ◽  
Boliang Lou ◽  
Xiulin Xiao ◽  
Yinlong Fan ◽  
...  
Keyword(s):  
Control Strategy ◽  
Reactive Power ◽  
Distribution Network ◽  
Voltage Control ◽  
Voltage Regulation ◽  
Extremum Seeking ◽  
Pv System ◽  
Voltage Control Strategy ◽  
Voltage Controller ◽  
Point Of Common Coupling

With the increase of grid-connected PV capacity, voltage regulation at point of common coupling by controlling the reactive power injected into the grid is available. This paper presents an adaptive voltage control strategy for distribution network with high proportion PV system. The PI gain of the voltage controller is automatically adjusted by the extremum seeking algorithm to dynamically respond to the changes of the network. The PI gains are updated online through the minimization of a cost function, which represents the voltage controller performance. Finally, a distribution network model of 5 MW photovoltaic power generation system is built in MATLAB / Simulink to verify the effectiveness of the proposed control strategy.

scholarly journals Distributed Event-Triggered Voltage Control with Limited Re-Active Power in Low Voltage Distribution Networks

Electronics ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 128
Author(s):  
Yanyu Luo ◽  
Minyou Chen ◽  
Wenfa Kang ◽  
Xiaoluo Sun
Keyword(s):  
Control Strategy ◽  
Low Voltage ◽  
Voltage Control ◽  
Distribution Networks ◽  
Voltage Sensitivity ◽  
Voltage Distribution ◽  
Level Control ◽  
Sensitivity Matrix ◽  
Voltage Control Strategy ◽  
Event Triggered

A high proportion of photovoltaic (PV) connections to a low-voltage distribution network (LVDN) causes serious voltage problems. In order to ensure voltage stability for renewable energy networks, we propose a distributed reactive voltage control strategy that is event-triggered. The voltage information of the PV nodes is transmitted to the upper layer of the communication network, where the agent calculates the output set value of the PV inverter. The underlying control strategy is based on the voltage sensitivity matrix, and the upper-level control strategy is based on an event-triggered consensus protocol. This strategy can accommodate the requirements for multi-time modeling and control. We verified the convergence of the event-triggered control algorithm using numerical analysis and proved the reduction of the communication times. We conducted case studies and simulation experiments to verify the effectiveness of our proposed voltage control strategies.

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