Comparative Study of the Traditional, Arctan and Universal Droop Control Techniques for Proper Power Sharing in an Islanded Micro-Grid

2021 ◽  
Author(s):  
Ineza Marie Aimée ◽  
Michael Juma Saulo ◽  
Cyrus Wabuge Wekesa
Keyword(s):  
Comparative Study ◽  
Power Sharing ◽  
Droop Control ◽  
Control Techniques ◽  
Proper Power ◽  
Micro Grid

scholarly journals An Islanded Microgrid Droop Control using Henry Gas Solubility Optimization

2021 ◽  
Vol 10 (3) ◽  
pp. 43-48
Author(s):  
Mohamed A. Ebrahim ◽  
Reham M. Abdel Fattah ◽  
Ebtisam M. Saied ◽  
Samir M. Abdel Maksoud ◽  
Hisham El Khashab
Keyword(s):  
Control Method ◽  
Control Strategies ◽  
Voltage Regulation ◽  
Power Sharing ◽  
Droop Control ◽  
Gas Solubility ◽  
Distributed Generations ◽  
Communication Links ◽  
Proper Power ◽  
Micro Grid

Coordination of various distributed generation (DG) units is required to meet the growing demand for electricity. Several control strategies have been developed to operate parallel-connected inverters for microgrid load sharing. Among these techniques, due to the lack of essential communication links between parallel-connected inverters to coordinate the DG units within a microgrid, the droop control method has been generally accepted in the scientific community. This paper discusses the microgrid droop controller during islanding using the Henry Gas Solubility Optimization (HGSO). The most important goals of droop control in the islanded mode of operation are the frequency and voltage control of microgrid and proper power sharing between distributed generations. The droop controller has been designed using HGSO to optimally choose PI gains and droop control coefficients in order to obtain a better microgrid output response during islanding. Simulation results indicate that the droop controller using HGSO improves the efficiency of micro-grid power by ensuring that variance in microgrid frequency and voltage regulation and effective power sharing occurs whenever micro-grid island mode or when variation in load occurs.

scholarly journals Comparative Study of Power Sharing Performance in Micro-grid under Two Different Platforms-PSCAD/EMTDC and MATLAB/SIMULINK Simpower System

2014 ◽  
Vol 7 (20) ◽  
pp. 4370-4378
Author(s):  
N. Chitra ◽  
A. Senthil Kumar ◽  
K.M. Shobana ◽  
P. Priyadharshini ◽  
V. Logeswari ◽  
...  
Keyword(s):  
Comparative Study ◽  
Power Sharing ◽  
Matlab Simulink ◽  
Micro Grid

Analysis and Modeling of Droop Control in Micro-Source for Islanded Micro-Grid

2014 ◽  
Vol 960-961 ◽  
pp. 1151-1155 ◽  
Author(s):  
Wei Lin Zhang ◽  
Jing Xiong ◽  
Yu Jiong Gu ◽  
Ping Zhu
Keyword(s):  
Distributed Generation ◽  
Control Method ◽  
Controller Design ◽  
Power Sharing ◽  
Droop Control ◽  
Simulation Data ◽  
Storage Devices ◽  
Load Power ◽  
Micro Grid ◽  
System Frequency

Considering decentralization of the micro-source units and loads in the micro-grid and concentrating on generation types and models of the storage devices,droop controlstrategy is used in controller design for the distributed generation units. The generation units adopting droop control method based on the droop characteristics can facilitate load power sharing when the powers of loads vary, and can also maintain the system frequency when a unit fault occurs and the micro-grid islands. Then, the operation variations of the micro-grid are analyzed when it runs with load changes in islanding mode and runs with the load power of micro-source varied suddenly. The corresponding rules of the active power, voltage and current for each micro-source and the frequency for the micro-grid are obtained. The simulation data results show the correctness and validity of the droop control strategy.

scholarly journals Robust Power Sharing and Voltage Stabilization Control Structure via Sliding-Mode Technique in Islanded Micro-Grid

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 883 ◽  
Author(s):  
Quan-Quan Zhang ◽  
Rong-Jong Wai
Keyword(s):  
Dynamic Response ◽  
Sliding Mode ◽  
Active Power ◽  
Power Sharing ◽  
System Stability ◽  
Droop Control ◽  
Voltage Amplitude ◽  
Voltage Deviation ◽  
Micro Grid ◽  
Control Relation

With a focus on the problems of active power sharing and voltage deviation of parallel-connected inverters in an islanded micro-grid (MG), in this study, the power-voltage droop controller and the inner voltage regulator are redesigned based on a total sliding-mode control (TSMC) technique. As for the power-voltage droop control loop, a droop control relation error between the active power and the point-of-common-coupling (PCC) voltage amplitude is defined. Then, the TSMC scheme is adopted to reach the new droop control relation, where the active power sharing and voltage amplitude recovery can be achieved simultaneously. Owing to the faster dynamic response and strong robustness provided by the TSMC framework, high-precision active power sharing during transient state also can be ensured without the influence of line impedances. The power allocation error can be improved by more than 81.2% and 50% than the conventional and proportional-integral (PI)-based droop control methods, respectively, and the voltage deviation rate can be reduced to 0.16%. Moreover, a small-signal model of the TSMC-based droop-controlled system is established, and the influences of control parameters on the system stability and the dynamic response are also investigated. The effectiveness of the proposed control method is verified by numerical simulations and experimental results.

A Review of Classical and Modern Control Techniques Utilized in Modern Microgrids

2021 ◽  
Vol 14 ◽  
Author(s):  
Muhammad Hamza Shahbaz ◽  
Arslan Ahmed Amin
Keyword(s):  
Control Strategies ◽  
Optimal Solution ◽  
Energy Resources ◽  
Control Methods ◽  
Research Gaps ◽  
Control Techniques ◽  
Micro Grid ◽  
Exciting Development ◽  
Micro Grids ◽  
Modern Control

: Because of the consistently expanding energy request, the introduction of a decentralized micro-grid based on energy resources will soon be the most exciting development in the power system. Micro-grids, which are mainly based on inverters, are becoming more popular as they can handle different forms of renewable energy effectively. However, one of the most challenging areas of research is their control. In the last few years, many control strategies have been developed. In this review, different control methods have been discussed that apply to the micro-grid system. Furthermore, the comparative analysis of classical and modern control strategies is also considered. This survey guides the new researchers about all available control strategies and room for improvement towards the optimal solution of the micro-grid control techniques. It also identifies several research gaps and future trends therein as well as provides a solution to manage problems in MGs. The strategies are then compared based on their applicability to different control requirements.

Adaptive Droop Control of VSC-MTDC System for Frequency Support and Power Sharing

2018 ◽  
Vol 33 (2) ◽  
pp. 1264-1274 ◽  
Author(s):  
Weiyu Wang ◽  
Yong Li ◽  
Yijia Cao ◽  
Ulf Hager ◽  
Christian Rehtanz
Keyword(s):  
Power Sharing ◽  
Droop Control
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