Local Frequency Restoration for Droop-Controlled Parallel Inverters in Islanded Microgrids | IEEE Journals & Magazine | IEEE Xplore

Local Frequency Restoration for Droop-Controlled Parallel Inverters in Islanded Microgrids


Abstract:

In islanded microgrids, voltage source inverters working in parallel are expected to provide regulation of the local frequency while granting active power sharing. This p...Show More

Abstract:

In islanded microgrids, voltage source inverters working in parallel are expected to provide regulation of the local frequency while granting active power sharing. This paper presents a local control approach at each inverter based on an event-driven operation of a parameter-varying filter. It ensures perfect active power sharing and controllable accuracy for frequency restoration without requiring the exchange of control data between inverters over the communication network. This paper includes stability analysis and design guidelines for the control parameters using a modeling approach that considers the interaction between inverters. Selected experimental results on a three-inverter laboratory microgrid corroborate the effectiveness of the proposed control scheme, and outlines its advantages with respect to previous similar schemes and the performance cost that implies not using communications.
Published in: IEEE Transactions on Energy Conversion ( Volume: 34, Issue: 3, September 2019)
Page(s): 1232 - 1241
Date of Publication: 11 December 2018

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I. Introduction

The parallel operation of voltage source inverters (VSI) in an islanded microgrid (MG) has as a primary goal an even distribution of system load between them, which can be achieved by the droop control method [1]. The frequency deviation inherently induced by the droop method can be solved by diverse restoration strategies. Many solutions (see [2]–[15] to name a few) require exchanging control data between VSIs over a communication network to achieve frequency restoration. The traditional approach to restore the frequency is to apply a centralized structure based on communications where a central unit collects information of all the droop-controlled units, executes a standard PI (proportional-integral) control, and sends back the computed control actions. Even knowing that accurate performance is easily achieved, this approach is sensitive to failures, leading to a single point of failure. To overcome this limitation, recent approaches are inspired in the decentralized control concept, making a different use of the communication channel. And only a few approaches (e.g. [16]–[18]) offer solutions that do not require the exchange of information and therefore they avoid using for control purposes the communication channel of the information and communication technology (ICT) infrastructure that is available in today's MGs [19], [20]. This prevents the degradation that may occurs in distributed control strategies for active power sharing and frequency restoration due to message dropouts, time delays, transmission intervals, quantization, sampling schemes, and traffic scheduling, e.g. [21]–[23].

Cites in Papers - |

Cites in Papers - IEEE (15)

Select All
1.
Fawad Nawaz, Ehsan Pashajavid, Yuanyuan Fan, Munira Batool, "Hybrid Energy Storage System in DC Microgrids – An Enhanced Distributed Coordinated Control", 2024 IEEE International Smart Cities Conference (ISC2), pp.1-6, 2024.
2.
Dalia Yousri, Hany E. Z. Farag, Hatem Zeineldin, Ehab El-Saadany, "Optimized Unsymmetrical Per-Phase Droop for Soft Line Switching of Reconfigurable Unbalanced Inverter-Based Islanded Microgrid", IEEE Transactions on Power Systems, vol.39, no.2, pp.3851-3866, 2024.
3.
Iresha Poonahela, Abdelbasset Krama, Sertac Bayhan, Ugur Fesli, Mohammad B. Shadmand, Haitham Abu-Rub, Miroslav M. Begovic, "Hierarchical Model-Predictive Droop Control for Voltage and Frequency Restoration in AC Microgrids", IEEE Open Journal of the Industrial Electronics Society, vol.4, pp.85-97, 2023.
4.
Sandipan Patra, Malabika Basu, "Double-Layered Droop Control-Based Frequency Restoration and Seamless Reconnection of Isolated Neighboring Microgrids for Power Sharing", IEEE Journal of Emerging and Selected Topics in Power Electronics, vol.10, no.5, pp.6231-6242, 2022.
5.
Vedin Klovo, Halil Lačević, Izudin Džafić, "Real-Time Estimation of Instantaneous Power System Fundamental Frequency", 2022 XXVIII International Conference on Information, Communication and Automation Technologies (ICAT), pp.1-6, 2022.
6.
Rui Wang, Qiuye Sun, Ji Han, Jianguo Zhou, Wei Hu, Huaguang Zhang, Peng Wang, "Energy-Management Strategy of Battery Energy Storage Systems in DC Microgrids: A Distributed Dynamic Event-Triggered H∞ Consensus Control", IEEE Transactions on Systems, Man, and Cybernetics: Systems, vol.52, no.9, pp.5692-5701, 2022.
7.
Fei Deng, Yang Li, Xiangke Li, Wenli Yao, Xiaobin Zhang, Paolo Mattavelli, "A Decentralized Impedance Reshaping Strategy for Balanced, Unbalanced and Harmonic Power Sharing in Islanded Resistive Microgrids", IEEE Transactions on Sustainable Energy, vol.13, no.2, pp.743-754, 2022.
8.
Sebastián de J. Manrique Machado, Sérgio Augusto Oliveira da Silva, José Roberto Boffino de Almeida Monteiro, "Comparative Analysis of Alternatives for Virtual Impedance Representation in a Small-Signal Reduced-Order Model for Low-Voltage Islanded AC Microgrids", 2021 Brazilian Power Electronics Conference (COBEP), pp.1-6, 2021.
9.
Wang Guangnan, Wen Chuanbo, "Active power sharing control strategy of microgrid inverter based on parameter filtering and adaptive virtual resistance", 2021 IEEE International Conference on Electrical Engineering and Mechatronics Technology (ICEEMT), pp.557-561, 2021.
10.
Xin Lin, Ramon Zamora, Craig A. Baguley, "A Fully Filter-Based Decentralized Control With State of Charge Balancing Strategy for Battery Energy Storage Systems in Autonomous DC Microgrid Applications", IEEE Access, vol.9, pp.15028-15040, 2021.
11.
Bo Zhang, Chunxia Dou, Dong Yue, Zhanqiang Zhang, Tengfei Zhang, "A Packet Loss-Dependent Event-Triggered Cyber-Physical Cooperative Control Strategy for Islanded Microgrid", IEEE Transactions on Cybernetics, vol.51, no.1, pp.267-282, 2021.
12.
Manoja Kumar Behera, Lalit Chandra Saikia, Satish Kumar Ramoji, Biswanath Dekaraja, Sanjeev Kumar Bhagat, Naladi Ram Babu, "Voltage and Frequency Control for DG Inverter in Low Voltage Islanded Microgrid with Improved Virtual Impedance Droop Control Scheme", 2020 IEEE 17th India Council International Conference (INDICON), pp.1-7, 2020.
13.
Wang Rui, Sun Qiuye, Zhang Pinjia, Gui Yonghao, Qin Dehao, Wang Peng, "Reduced-Order Transfer Function Model of the Droop-Controlled Inverter via Jordan Continued-Fraction Expansion", IEEE Transactions on Energy Conversion, vol.35, no.3, pp.1585-1595, 2020.
14.
Yi Chyn Cassandra Wong, Chee Shen Lim, Mihai Dragos Rotaru, Andrew Cruden, Xin Kong, "Consensus Virtual Output Impedance Control Based on the Novel Droop Equivalent Impedance Concept for a Multi-Bus Radial Microgrid", IEEE Transactions on Energy Conversion, vol.35, no.2, pp.1078-1087, 2020.
15.
Yang Han, Mengling Yang, Ping Yang, Lin Xu, Xu Fang, Ke Zhang, Frede Blaabjerg, "Reduced-Order Model for Dynamic Stability Analysis of Single-Phase Islanded Microgrid With BPF-Based Droop Control Scheme", IEEE Access, vol.7, pp.157859-157872, 2019.

Cites in Papers - Other Publishers (9)

1.
Dan Liu, Kezheng Jiang, Ping Xiong, Xu Tian, Rui Wang, Qiuye Sun, "Fixed-time quasi-consensus energy management method for battery energy storage systems in DC microgrids under two types of DoS attacks", Journal of Energy Storage, vol.113, pp.115574, 2025.
2.
Andres Mauricio Salinas Cala, Juan Manuel Rey López, María Alejandra Mantilla Villalobos, "Secondary Control Strategy without Communications for Unbalanced Isolated Microgrids", Simposio Internacional sobre la Calidad de la Energía Eléctrica - SICEL, vol.11, 2024.
3.
Andrés Mauricio Salinas-Cala, Juan Manuel Rey-López, María Alejandra Mantilla-Villalobos, "Secondary Control Strategy without Communications for Unbalanced Isolated Microgrids", Revista UIS Ingenierías, vol.23, no.1, 2024.
4.
Xu Tian, Weisheng Wang, Liang Zou, Shuo Zhai, Bin Hai, Rui Wang, "Energy-Management Strategy of Battery Energy Storage Systems in DC Microgrids: A Distributed Fuzzy Output Consensus Control Considering Multiple Cyber Attacks", Mathematics, vol.12, no.6, pp.887, 2024.
5.
Ola Ali, Tung-Lam Nguyen, Osama A. Mohammed, "Assessment of Cyber-Physical Inverter-Based Microgrid Control Performance under Communication Delay and Cyber-Attacks", Applied Sciences, vol.14, no.3, pp.997, 2024.
6.
Carlos Xavier Rosero, Milton Gavilanez, Cosme Mejia-Echeverria, "Droop-Free Sliding-Mode Control for Active-Power Sharing and Frequency Regulation in Inverter-Based Islanded Microgrids", Energies, vol.16, no.18, pp.6442, 2023.
7.
Amirkhosro Vosughi, Ali Tamimi, Alexandra Beatrice King, Subir Majumder, Anurag K. Srivastava, "Cyber?physical vulnerability and resiliency analysis for DER integration: A review, challenges and research needs", Renewable and Sustainable Energy Reviews, vol.168, pp.112794, 2022.
8.
Manel Velasco, Pau Marti, Ramon Guzman, Jaume Miret, Miguel Castilla, "Communication in Active Distribution Networks", Planning and Operation of Active Distribution Networks, vol.826, pp.319, 2022.
9.
Rui Wang, Qiuye Sun, Yonghao Gui, Dazhong Ma, "Exponential-function-based droop control for islanded microgrids", Journal of Modern Power Systems and Clean Energy, vol.7, no.4, pp.899-912, 2019.

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