scholarly journals Convergence analysis of a distributed voltage support strategy for optimal reactive power compensation*

2012 ◽  
Vol 45 (26) ◽  
pp. 145-150 ◽  
Author(s):  
Saverio Bolognani ◽  
Sandro Zampieri
Keyword(s):  
Convergence Analysis ◽  
Reactive Power ◽  
Reactive Power Compensation ◽  
Support Strategy ◽  
Voltage Support

scholarly journals Research on Dynamic Reactive Power Compensation Scheme for Inhibiting Subsequent Commutation Failure of MIDC

2021 ◽  
Vol 13 (14) ◽  
pp. 7829
Author(s):  
Yifan Zhang ◽  
Fei Tang ◽  
Fanghua Qin ◽  
Yu Li ◽  
Xin Gao ◽  
...  
Keyword(s):  
Reactive Power ◽  
Inhibitory Effect ◽  
Economic Benefits ◽  
Reactive Power Compensation ◽  
Normal Operation ◽  
Voltage Fluctuation ◽  
Commutation Failure ◽  
Bus Voltage ◽  
Configuration Scheme ◽  
Voltage Support

Commutation failure at the inverter side of an MIDC (multi-infeed HVDC) is usually caused by AC system faults. Suppose the converter bus voltage cannot recover to the normal operation level in time: in that case, the commutation failure will then develop into more severe subsequent commutation failures or even DC blocking, which will severely threaten the security and stability of the system. Dynamic reactive power compensation equipment (DRPCE) can offer voltage support during accident recovery, stabilize voltage fluctuation and inhibit any subsequent commutation failure risk. This paper proposes the optimal DRPCE configuration scheme for maximizing both inhibitory effect and economic performance. The simulation results on MATLAB-BPA prove the scheme’s correctness and rationality, which can effectively inhibit the risk of subsequent commutation failure and obtain economic benefits.

scholarly journals Convergence analysis of the variables integration method applied in multiobjetive optimization in the reactive power compensation in the electric nets

DYNA ◽  
2015 ◽  
Vol 82 (190) ◽  
pp. 160-165
Author(s):  
Secundino Marrero Ramirez ◽  
Ileana González-Palau ◽  
Aristides A. Legra-Lobaina
Keyword(s):  
Convergence Analysis ◽  
Processing Time ◽  
Total Population ◽  
Reactive Power ◽  
Integration Method ◽  
Reactive Power Compensation ◽  
Multi Objective Optimization ◽  
Variable Integration ◽  
Electric Supply

This research deals with the use of a calculus method in multi-criteria optimization. A modification do the algorithm of variable integration was carried out, in order to establish a terminal criterion during the multi-objective optimization of the reactive power compensation, in electric supply nets. It demanded the use of heuristic techniques, where the existence of high number of nodes, guided the research towards methods able to minimize the required processing time to find a solution, without affecting the quality of the results, and the convergence of the process, in spite of the high number of present members within the total population to be evaluated.

REACTIVE POWER COMPENSATION MINIMUM LOAD TRANSFORMERS WITH A SECONDARY VOLTAGE 0 4 KV

2018 ◽  
Vol 28 (104) ◽  
pp. 154-160
Author(s):  
I. Doroshenko, ◽  
◽  
T. Druchyna, ◽  
Yu. G. Sarahman ◽  
Keyword(s):  
Reactive Power ◽  
Reactive Power Compensation ◽  
Secondary Voltage

Optimization Design on Power Filter of TCR Under Asymmetrical Voltage

2015 ◽  
Vol 9 (1) ◽  
pp. 591-599
Author(s):  
Ma Wenchuan ◽  
Zhitong Li ◽  
Chen Daochang ◽  
Qi Jiaming ◽  
Zhou Qiang ◽  
...  
Keyword(s):  
Optimization Design ◽  
Reactive Power ◽  
Estimation Method ◽  
Reactive Power Compensation ◽  
Harmonic Suppression ◽  
Matlab Simulation ◽  
Steel Mill ◽  
Harmonic Current ◽  
Third Harmonic ◽  
Power Filter

For resolving the problem that power filter cannot work normally because TCR (thyristor controlled reactor) generates extra third harmonic current under asymmetrical voltage, the paper proposes the estimation method of current capacity that TCR generates extra third harmonic current under asymmetrical voltage. Considering extra third harmonic current under asymmetrical voltage, Optimum method based on genetic algorithm is used to design the parameters of power filter. With reactive power compensation and harmonic suppression project of a steel mill as example, the proposed method is simulated by Matlab. Simulation results show optimized power filter can eliminate extra third harmonic current effects under asymmetrical voltage, meet the requirement of reactive power compensation, reduce harmonics current that load injects into system, and guarantee the power filter safe operation under asymmetrical voltage.

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