Co-ordinated and real time voltage control of DSTS-biomass based isolated hybrid power system using Grey Wolf optimization

2020 ◽  
pp. 002072092096587
Author(s):  
M Mynavathi ◽  
J Devi Shree ◽  
K Saranya
Keyword(s):  
Power System ◽  
Real Time ◽  
Control Strategy ◽  
Reactive Power ◽  
System Stability ◽  
Grey Wolf ◽  
Grey Wolf Optimization ◽  
Hybrid Power System ◽  
Hybrid Power ◽  
Voltage Deviation

This paper proposes a co-ordinated reactive power control strategy analysis in Line Side Converter (LSC) of Doubly Fed induction generator (DFIG) and in the Automatic voltage regulator (AVR) of synchronous generator (SG) in isolated Dish Stirling solar Thermal(DSTS) – Biomass hybrid power system. This co-ordinated control strategy greatly maintains the autonomous hybrid power system voltage deviation by adjusting the reactive power imbalance caused due to the impulsive reactive power nature of DFIG coupled with the DSTS and load. Gain values of Integral Order Proportional Integral (IO-PI) controller in LSC and AVR are optimized to maintain the system voltage stability. Modern and simple Grey wolf optimization algorithm has been used to extract the superior PI gain values to maintain system stability with less reaction time. The proposed co-ordinated control strategy has been tested with various load disturbance and with dynamic input power feed from DSTS to validate the system robustness. Also, the optimized gain value based voltage deviation values are validated in real time with dSPACE.

scholarly journals Study on emergency power control strategy for AC/DC hybrid power system containing VSC-HVDC

2018 ◽  
Author(s):  
Lin Liu ◽  
Zhenda Hu ◽  
Rong Ye ◽  
Zhangsui Lin ◽  
Xiaodong Yang ◽  
...  
Keyword(s):  
Power System ◽  
Power Control ◽  
Control Strategy ◽  
Hybrid Power System ◽  
Hybrid Power ◽  
Emergency Power

scholarly journals A Disturbance Rejection Control Strategy of a Single Converter Hybrid Electrical System Integrating Battery Degradation

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2781
Author(s):  
Yue Zhou ◽  
Hussein Obeid ◽  
Salah Laghrouche ◽  
Mickael Hilairet ◽  
Abdesslem Djerdir
Keyword(s):  
Power System ◽  
Hybrid System ◽  
Control Strategy ◽  
Disturbance Rejection ◽  
Pass Filter ◽  
Hybrid Power System ◽  
Hybrid Power ◽  
Disturbance Rejection Control ◽  
Cubature Kalman Filter ◽  
Dc Bus

In order to improve the durability and economy of a hybrid power system composed of a battery and supercapacitors, a control strategy that can reduce fluctuations of the battery current is regarded as a significant tool to deal with this issue. This paper puts forwards a disturbance rejection control strategy for a hybrid power system taking into account the degradation of the battery. First, the degradation estimation of the battery is done by the model-driven method based on the degradation model and Cubature Kalman Filter (CKF). Considering the transient and sinusoidal disturbance from the load in such a hybrid system, it is indispensable to smooth the behavior of the battery current in order to ensure the lifespan of the battery. Moreover, the constraints for the hybrid system should be considered for safety purposes. In order to deal with these demands, a cascaded voltage control loop based on a super twisting controller and proportional integral controller with an anti-windup scheme is designed for regulating the DC bus voltage in an inner voltage loop and supercapacitors’ voltage in an outer voltage loop, respectively. The specific feature of the proposed control method is that it operates like a low-pass filter so as to reduce the oscillations on the DC bus.

Seeker optimized SVC-PID controller for reactive power control of an isolated hybrid power system

2018 ◽  
Vol 10 (4) ◽  
pp. 985-1015 ◽  
Author(s):  
Abhik Banerjee ◽  
Pabitra Kumar Guchhait ◽  
Vivekananda Mukherjee ◽  
S. P. Ghoshal
Keyword(s):  
Power System ◽  
Power Control ◽  
Pid Controller ◽  
Reactive Power ◽  
Reactive Power Control ◽  
Hybrid Power System ◽  
Hybrid Power
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