Reactive power flow optimization in the presence of Secondary Voltage Control

2009 ◽  
Author(s):  
Valentin Ilea ◽  
Cristian Bovo ◽  
Marco Merlo ◽  
Alberto Berizzi ◽  
Mircea Eremia
Keyword(s):  
Power Flow ◽  
Reactive Power ◽  
Voltage Control ◽  
Flow Optimization ◽  
Reactive Power Flow ◽  
Secondary Voltage

Voltage Control in Transmission Grids Considering Uncertainties of Renewable Energy Sources_preprint.pdf

2020 ◽  
Author(s):  
Markus Knittel ◽  
Neelotpal Majumdar ◽  
Maximilian Schneider ◽  
Nicolas Thie ◽  
Albert Moser
Keyword(s):  
Renewable Energy ◽  
Power Flow ◽  
Power Plants ◽  
Reactive Power ◽  
Voltage Control ◽  
Active Power ◽  
Soft Constraints ◽  
Reactive Power Flow ◽  
Probability Densities ◽  
Optimal Reactive Power Flow

Power traders and system operators need to balance the uncertain generation of renewable energy sources by adapting the dispatch of conventional power plants. This poses a challenge to voltage control in power system operation. Accordingly, this paper presents a method to determine voltage magnitude probability densities which are integrated into an optimal reactive power flow to consider an uncertain active power generation. First, the probability densities are determined by Monte Carlo simulations including a unit commitment problem to derive the dispatch of conventional power plants. Second, uncertainty restrictions are used to create soft constraints for the optimal reactive power flow, which mitigates the risk of voltage limit violations. By adapting the soft constraints slack costs, the consideration of uncertainties can be prioritized in relation to other objectives, such as the reduction of active power losses, or reactive power costs.<br>

scholarly journals Voltage Control in Transmission Grids Considering Uncertainties of Renewable Energy Sources_preprint.pdf

2020 ◽  
Author(s):  
Markus Knittel ◽  
Neelotpal Majumdar ◽  
Maximilian Schneider ◽  
Nicolas Thie ◽  
Albert Moser
Keyword(s):  
Renewable Energy ◽  
Power Flow ◽  
Power Plants ◽  
Reactive Power ◽  
Voltage Control ◽  
Active Power ◽  
Soft Constraints ◽  
Reactive Power Flow ◽  
Probability Densities ◽  
Optimal Reactive Power Flow

Power traders and system operators need to balance the uncertain generation of renewable energy sources by adapting the dispatch of conventional power plants. This poses a challenge to voltage control in power system operation. Accordingly, this paper presents a method to determine voltage magnitude probability densities which are integrated into an optimal reactive power flow to consider an uncertain active power generation. First, the probability densities are determined by Monte Carlo simulations including a unit commitment problem to derive the dispatch of conventional power plants. Second, uncertainty restrictions are used to create soft constraints for the optimal reactive power flow, which mitigates the risk of voltage limit violations. By adapting the soft constraints slack costs, the consideration of uncertainties can be prioritized in relation to other objectives, such as the reduction of active power losses, or reactive power costs.<br>

scholarly journals PSCAD-MATLAB Coupled Simulation Method for Power Flow Optimization using Continuous Reactive Power Controllable Device

2021 ◽  
Vol 1754 (1) ◽  
pp. 012026
Author(s):  
Fan Yang ◽  
Kai Chen ◽  
Shaofeng Qian ◽  
JiangYang Zhan ◽  
Rui Yu ◽  
...  
Keyword(s):  
Power Flow ◽  
Reactive Power ◽  
Simulation Method ◽  
Coupled Simulation ◽  
Flow Optimization
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