scholarly journals Proportional Power-Sharing Control of Distributed Generators in Microgrids

2021 ◽  
pp. 1-14
Author(s):  
Farzad Aalipour ◽  
Tuhin Das
Keyword(s):  
Power Sharing ◽  
Distributed Generators

scholarly journals Optimal Power Sharing for Microgrid with Multiple Distributed Generators

2013 ◽  
Vol 64 ◽  
pp. 546-551 ◽  
Author(s):  
V. Logeshwari ◽  
N. Chitra ◽  
A. Senthil Kumar ◽  
Josiah Munda
Keyword(s):  
Power Sharing ◽  
Distributed Generators ◽  
Optimal Power

scholarly journals Consensus Control of Distributed Energy Resources in a Multi-Bus Microgrid for Reactive Power Sharing and Voltage Control

Energies ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 2710 ◽  
Author(s):  
Li Yu ◽  
Di Shi ◽  
Guangyue Xu ◽  
Xiaobin Guo ◽  
Zhen Jiang ◽  
...  
Keyword(s):  
Distribution System ◽  
Reactive Power ◽  
Hierarchical Control ◽  
Voltage Control ◽  
Power Sharing ◽  
Consensus Control ◽  
Distributed Generator ◽  
Distributed Generators ◽  
Control Framework ◽  
Major Factors

The hierarchical control architecture, including layers of primary, secondary and tertiary controls, is becoming the standard operating paradigm for microgrids (MGs). Two major factors that limit the adoption of existing hierarchical control in microgrid are the low accuracy in reactive power sharing and the requirement for complex communication infrastructure. This paper addresses this problem by proposing a novel distributed primary and secondary control for distributed generators dispersed in a multi-bus microgrid. The proposed method realizes voltage control and accurate reactive power sharing in a distributed manner using minimum communication. Each distributed generator only needs its own information and minimum information from its neighboring units. Topology of the network can be flexible which supports the plug-and-play feature of microgrids. In a distribution system, high R/X ratio and system imbalance can no longer be neglected and thus the sequence component analysis and virtual impedance are implemented in the proposed control framework. The proposed framework is validated by simulation results on a MG testbed modified from the IEEE 13-bus distribution system.

scholarly journals Autonomous microgrid based parallel inverters using droop controller for improved power sharing

2020 ◽  
Vol 9 (6) ◽  
pp. 2302-2310
Author(s):  
Siddaraj Siddaraj ◽  
Udaykumar R. Yaragatti ◽  
Nagendrappa H. ◽  
Vikash Kumar Jhunjhunwala
Keyword(s):  
Energy Source ◽  
Reactive Power ◽  
Active Power ◽  
Power Sharing ◽  
Voltage Source ◽  
Voltage Source Inverters ◽  
Distributed Generators ◽  
Current Controller ◽  
Power Frequency

The existing microgrid has become a challenge to the sustainable energy source to provide a better quality of power to the consumer. To build a reliable and efficient microgrid, designing a droop controller for the microgrid is of utmost importance. In this paper, multiple voltage source inverters connected in parallel using an active power-frequency/reactive power-voltage droop scheme. The proposed method connected to two distributed generators local controllers, where each unit consists of a droop controller with an inner voltage-current controller and a virtual droop controller. By adding this controller to the microgrid reliability and load adaptability of an islanded system can be improved. This concept applied without any real-time communication to the microgrid. Thus, simulated using MATLAB/Simulink, the obtained results prove the effectiveness of the autonomous operation's microgrid model.

Effective Communication-Based Reactive Power Sharing Scheme for Meshed Microgrid in an Islanded Mode

2021 ◽  
Author(s):  
Anitha Daniel ◽  
Suchitra Dayalan
Keyword(s):  
Power System ◽  
Reactive Power ◽  
Local Area ◽  
Power Sharing ◽  
Matlab Simulation ◽  
Distributed Generators ◽  
Control Scheme ◽  
Islanded Mode ◽  
Radial Network ◽  
Virtual Impedance

Microgrids (MGs) are the most sought out and feasible solution for the present energy crisis. MG is a group of Distributed Generators (DGs) interacting with each other to provide energy to a defined local area. The inclusion of DGs into the conventional power system at various voltage levels has altered the topology of the power system and their control techniques. Hence, the MGs can no longer be considered as a traditional radial network but rather a meshed network. The control and operation of such practical MGs become a challenge, especially when operated in the islanded mode. This research paper considers a realistic meshed MG operating in an islanded mode for study. In an islanded MG, the issues of real and reactive power sharing among DGs are addressed so that the power contribution of each DG is proportional to its rating, thus preventing overload and ensuring reliable operation. A communication-based virtual impedance estimation is proposed in addition to the droop controller for proportionate real and reactive power sharing among DGs in a meshed MG. With the increased complexity of meshed MG, the proposed communication-based control scheme offers an efficient reactive power sharing between DGs without the feeder and network impedance requirements. A MATLAB simulation study proves the effectiveness of the proposed control strategy for a meshed MG with equal DG ratings and unequal DG ratings under changing load conditions.

scholarly journals A Novel Compact dq-Reference Frame Model for Inverter-Based Microgrids

Electronics ◽  
2019 ◽  
Vol 8 (11) ◽  
pp. 1326 ◽  
Author(s):  
Carlos A. Macana ◽  
Eduardo Mojica-Nava ◽  
Hemanshu R. Pota ◽  
Josep M. Guerrero ◽  
Juan C. Vasquez
Keyword(s):  
Dynamic Model ◽  
Experimental Validation ◽  
Power Sharing ◽  
Control Technique ◽  
Primary Control ◽  
Distributed Generators ◽  
Proposed Model ◽  
Three Phase ◽  
Three Phase Inverter ◽  
Accuracy Performance

The development and the experimental validation of a novel dynamic model of an islanded three-phase Inverter-based Microgrid (IMG) is presented in this paper. The proposed model reproduces the relevant system dynamics without excessive complexity and enough accuracy. The dynamics of the IMG are captured with a compact and scalable dynamic model, considering inverter based distributed generators with d-current droop primary and proportional resonant inner controllers. The complete development of the model, the practical assumptions, and the accurate proportional power sharing of the primary control technique are shown. The accuracy performance was verified in experiments performed at the Aalborg Intelligent Microgrids Laboratory for an islanded IMG case.

An Improved Virtual Capacitor Algorithm for Reactive Power Sharing in Multi-Paralleled Distributed Generators

2019 ◽  
Vol 34 (11) ◽  
pp. 10786-10795 ◽  
Author(s):  
Haizhen Xu ◽  
Changzhou Yu ◽  
Chun Liu ◽  
Qinglong Wang ◽  
Fang Liu ◽  
...  
Keyword(s):  
Reactive Power ◽  
Power Sharing ◽  
Distributed Generators
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