Distributed Control Strategy to Achieve Synchronized Operation of an Islanded MG

Du, Yuhua; Tu, Hao; Lukic, Srdjan

doi:10.1109/TSG.2018.2861679

Title: Distributed Control Strategy to Achieve Synchronized Operation of an Islanded MG

Full Record
Other Related Research

Abstract

To seamlessly transition a microgrid (MG) from islanded to grid-connected mode, it is necessary to synchronize the magnitude, frequency, and phase of the MG voltage to the voltage of the main grid. In this paper, we present a distributed control strategy to achieve synchronized operation of an islanded MG supported by multiple controllable distributed generators (DGs). The proposed method utilizes pinning-based consensus algorithm to ensure explicit coordination between magnitude, frequency and phase angle regulation, while ensuring proportional power sharing. System frequency is regulated by all the DGs in proportion to their capacity, while a selected DG eliminates the phase and magnitude regulation errors. Controller design criteria is based on small-signal stability analysis. Here, the proposed control strategy is implemented in hardware controllers and its effectiveness is demonstrated using a real-time hardware-in-the-loop MG testbed.

Authors:

Du, Yuhua ^[1]; Tu, Hao ^[1]; Lukic, Srdjan ^[1]

North Carolina State Univ., Raleigh, NC (United States)

Publication Date:: Tue Jul 31 00:00:00 EDT 2018

Research Org.:: Vanderbilt Univ., Nashville, TN (United States)

Sponsoring Org.:: USDOE Advanced Research Projects Agency - Energy (ARPA-E)

OSTI Identifier:: 1483868

Report Number(s):: DOE-VANDERBILT-0000666-23.pdf
Journal ID: ISSN 1949-3053

Grant/Contract Number:: AR0000666

Resource Type:: Accepted Manuscript

Journal Name:: IEEE Transactions on Smart Grid

Additional Journal Information:: Journal Volume: 10; Journal Issue: 4; Journal ID: ISSN 1949-3053

Publisher:: IEEE

Country of Publication:: United States

Language:: English

Subject:: 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 29 ENERGY PLANNING, POLICY, AND ECONOMY; 42 ENGINEERING; 99 GENERAL AND MISCELLANEOUS; Consensus Algorithm; Distributed Generation; Microgrid Synchronization; Multi-agent System

Citation Formats


                    Du, Yuhua, Tu, Hao, and Lukic, Srdjan. Distributed Control Strategy to Achieve Synchronized Operation of an Islanded MG.  United States: N. p., 2018. 
Web.  doi:10.1109/TSG.2018.2861679.

Copy to clipboard


                    Du, Yuhua, Tu, Hao, & Lukic, Srdjan. Distributed Control Strategy to Achieve Synchronized Operation of an Islanded MG.  United States.  https://doi.org/10.1109/TSG.2018.2861679

Copy to clipboard


                    Du, Yuhua, Tu, Hao, and Lukic, Srdjan. Tue .  
"Distributed Control Strategy to Achieve Synchronized Operation of an Islanded MG".  United States.  https://doi.org/10.1109/TSG.2018.2861679.  https://www.osti.gov/servlets/purl/1483868.

Copy to clipboard


                    
@article{osti_1483868,

  title        = {Distributed Control Strategy to Achieve Synchronized Operation of an Islanded MG},

  author       = {Du, Yuhua and Tu, Hao and Lukic, Srdjan},

  abstractNote = {To seamlessly transition a microgrid (MG) from islanded to grid-connected mode, it is necessary to synchronize the magnitude, frequency, and phase of the MG voltage to the voltage of the main grid. In this paper, we present a distributed control strategy to achieve synchronized operation of an islanded MG supported by multiple controllable distributed generators (DGs). The proposed method utilizes pinning-based consensus algorithm to ensure explicit coordination between magnitude, frequency and phase angle regulation, while ensuring proportional power sharing. System frequency is regulated by all the DGs in proportion to their capacity, while a selected DG eliminates the phase and magnitude regulation errors. Controller design criteria is based on small-signal stability analysis. Here, the proposed control strategy is implemented in hardware controllers and its effectiveness is demonstrated using a real-time hardware-in-the-loop MG testbed.},

  doi          = {10.1109/TSG.2018.2861679},

  journal      = {IEEE Transactions on Smart Grid},

  number       = 4,

  volume       = 10,

  place        = {United States},

  year         = {Tue Jul 31 00:00:00 EDT 2018},

  month        = {Tue Jul 31 00:00:00 EDT 2018}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (DOE)

Publisher's Version of Record

https://doi.org/10.1109/TSG.2018.2861679

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 14 works

Citation information provided by
Web of Science

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE PAGES and OSTI.GOV collections:

Dynamic Microgrids With Self-Organized Grid-Forming Inverters in Unbalanced Distribution Feeders

Journal Article Du, Yuhua ; Lu, Xiaonan ; Tu, Hao ; ... - IEEE Journal of Emerging and Selected Topics in Power Electronics

In contrast to conventional static microgrids (MGs), MGs with dynamic and adjustable territories (i.e., dynamic MGs) are proposed and implemented in this paper. Dynamic MGs are commonly dominated by grid-forming inverters and nested in unbalanced distribution feeders. Unlike balanced systems where only positive-sequence components exist, proper operation of unbalanced dynamic MGs presents additional challenges. A distributed secondary control strategy is developed in this study for distributed generators (DGs) interfaced with gridforming inverters in unbalanced dynamic MGs by providing coordinated regulations on both positive- and negative-sequence system models. System frequency and voltage are under constant regulation, along with voltage unbalance (VU)more »« less
Cited by 24
https://doi.org/10.1109/jestpe.2019.2936741

Full Text Available
Accurate Consensus-based Distributed Averaging with Variable Time Delay in Support of Distributed Secondary Control Algorithms

Journal Article Du, Yuhua ; Tu, Hao ; Yu, Hui ; ... - IEEE Transactions on Smart Grid

We report that distributed secondary control has been widely used in hierarchical control structures, where multiple distributed generators (DGs) need to coordinate to regulate system voltage and frequency. In these systems, consensus algorithms determine the average of a group of dynamic states (e.g. voltages measured by a group of DGs). To be useful, consensus algorithms must be computationally efficient, stable and accurate. In practice, numerous practical implementation challenges significantly affect the consensus equilibrium. In this paper, we quantify the accuracy deviations of the distributed average observer algorithms proposed in the literature to demonstrate the problems with the state-of-the-art distributed averagingmore »« less
Cited by 13
https://doi.org/10.1109/TSG.2020.2975752

Full Text Available
A Universal Controller for Grid-Forming Inverters in Microgrid during Islanding for Low Transient Current

Conference Sadeque, Fahmid ; Mirafzal, Behrooz - 2022 1st IEEE International Conference on Industrial Electronics: Developments & Applications (ICIDeA)

This paper presents a universal controller to reduce the transient current during islanding of microgrid. In the proposed universal controller, two sets of semi-parallel paths are formed, where one set produces voltage and phase-angle references for the grid-following (GFL) mode, and the other set produces the voltage and phase-angle references for the grid-forming (GFM) mode of operation for the inverters. Herein, the controller enables an inverter to universally operate in GFL and GFM mode, whereas, only one set of voltage and phase-angle reference is engaged for PWM signal generation. When the microgrid is disconnected from the grid, the universal controllermore »« less
https://doi.org/10.1109/icidea53933.2022.9970059

Full Text Available
Analysis of Grid-Forming Inverter Controls for Grid-Connected and Islanded Microgrid Integration

Journal Article Ward, Laura ; Subburaj, Anitha ; Demir, Ayda ; ... - Sustainability (Basel)

Autonomous grid-forming (GFM) inverter testbeds with scalable platforms have attracted interest recently. In this study, a self-synchronized universal droop controller (SUDC) was adopted, tested, and scaled in a small network and a test feeder using a real-time simulation tool to operate microgrids without synchronous generators. We presented a novel GFM inverter control adoption to better understand the dynamic behavior of the inverters and their scalability, which can impact the distribution system (DS). This paper provides a steady-state and transient analysis of the GFM power inverter controller via simulation to better understand voltage and frequency stabilization and ensure that the criticalmore »« less
https://doi.org/10.3390/su16052148
Smart Inverters for Seamless Reconnection of Isolated Residential Microgrids to Utility Grid

Conference Pilehvar, Mohsen S. ; Mirafzal, Behrooz - 2020 IEEE Electric Power and Energy Conference (EPEC)

This paper proposes an approach to achieve seamless reconnection of isolated residential microgrids to utility grid. Any abnormal condition on the grid side results in isolating the residential microgrid from utility grid, and giving the full responsibility of supplying household loads to local distributed generation (DG) units. However, after resolving the abnormal condition on the grid side, the residential microgrid needs to seamlessly reconnect to the main grid. To this end, a seamless transition algorithm is presented which monitors the system condition in real time, and coordinates the operation of all inverter-based DG units in residential microgrid before reconnection tomore »« less
https://doi.org/10.1109/epec48502.2020.9320014

Full Text Available

Similar Records