Local adaptive pinning synchronisation for distributed secondary control of islanded microgrid

Gong, Pingping; Lu, Ziguang; Lv, Zhilin

doi:10.1049/iet-gtd.2019.1350

Cited by 4 publications

(2 citation statements)

References 35 publications

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“…Many methods have been proposed in the literature for synchronization systems. These synchronization methods are mostly presented in the literature as different synchronization methods, such as classical Phase Locked Loop based (PLL-based) [8], [16], [24], [57], [58], [59], [60], enhanced PLL-based [7], [15], [34], [61], [62], [63], [64], communication-based [5], [25], [43], [55], [65], [66], [67], and droop control based or without communication [24], [56], [68], [69], [70], [71]. These differ according to islanded and grid-connected operations.…”

Section: Introductionmentioning

confidence: 99%

Frequency, Phase, and Magnitude Difference Locked-Loop Based Linear Synchronization Scheme for Islanded Inverters and Microgrids

Atmaca

Karabacak

2023

IEEE Access

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In recent years, integrating renewable energy sources (RESs) has achieved significant attention due to the growing demand for sustainable energy solutions. Inverter-interfaced Islanded Microgrids (IGs) have appeared as an advantageous approach to integrating RESs into the power grid. Grid-forming inverters (GFIs) are a critical component of IGs, and their synchronization is essential for stable and reliable operation. The literature has widely proposed soft transition, pre-synchronization, and re-synchronization to synchronize IGs to the main grid. However, methods for synchronizing GFIs in the islanded microgrid are restricted. Parallel operation of GFIs is required to guarantee the high-power demand of IG and improve voltage-frequency stability. For parallel operation, GFIs must be synchronized with each other. In the conventional synchronization control systems that are highly nonlinear, the linear proportional-integral (PI) controllers are commonly used in synchronization loops without considering the nonlinearity resulting from the initial condition dependency and cross-coupling. Thus, conventional synchronization methods can be exposed to concerns of stable operation, narrow operation area, and performance degradation. This study proposes a new linearized synchronization control system for GFIs in IGs. In this way, it is possible to analytically design robust linear controllers and ensure a stable operation, high performance, and wide (full) operation area. In addition, a new soft-commissioning method is proposed to deactivate synchronization loops and soft-start the synced GFI. The proposed system has been tested in real-time and CHIL hardware setups for two 550 kW GFIs operating in parallel, and the results in the perfect agreement are presented in this study.INDEX TERMS Commissioning, control hardware-in-the-loop (CHIL), grid-forming inverter, islanded microgrid, load sharing, microgrid, synchronization.

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Section: Introductionmentioning

confidence: 99%

Frequency, Phase, and Magnitude Difference Locked-Loop Based Linear Synchronization Scheme for Islanded Inverters and Microgrids

Atmaca

Karabacak

2023

IEEE Access

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“…Several policies of management of power with corresponding controlling techniques for a microgrid is projected in [15,16]. The performance of the microgrid during islanding and synchronisation is discussed in [17], [18]. The nonlinear loads (NL) connected in the microgrid generates harmonics [19], [20] which in turn produces losses in the system as well as reduce the efficiency level of the system.…”

Section: Introductionmentioning

confidence: 99%

Power quality improvement using fuzzy logic-based compensation in a hybrid power system

Das¹,

Mishra²,

Ray³

et al. 2021

IJPEDS

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This paper is based on the improvement of power quality (PQ) using fuel cell and fuzzy based controller. By using the proposed controller, the quality of power in the grid system especially in micro grid connected with non- linear and unbalanced load is enhanced. The configuration of the system is combined with hybrid arrangement of photovoltaic ([PV) with wind energy conversion system (WECS), fuel cell (FC) including the compressed air energy storage system (CAES) where the power management is controlled by using the distributed power sharing technique. In this proposed system the distortions in voltage at point of common coupling (PCC) is decreased by using the FC which acts as compensator in hybrid system. Reference current is developed which depends on real and reactive power of the source connected to the compensator. Based on demand of power for nonlinear load, without using any external communication interfaces, the proposed control theory can change the modes of operation and can compensate the unbalance in the system which is caused due to single-phase micro sources and load changes. The complete productive design of the micro-sources and power electronic converters are presented in the paper. The operation and performance of the proposed controller used in microgrid is validated through simulation in MATLAB/Simulink environment.

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Distributed Control and Communication Strategies in Networked Microgrids

Zhou

Shahidehpour

Paaso

et al. 2020

IEEE Commun. Surv. Tutorials

180

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Local adaptive pinning synchronisation for distributed secondary control of islanded microgrid

Cited by 4 publications

References 35 publications

Frequency, Phase, and Magnitude Difference Locked-Loop Based Linear Synchronization Scheme for Islanded Inverters and Microgrids

Frequency, Phase, and Magnitude Difference Locked-Loop Based Linear Synchronization Scheme for Islanded Inverters and Microgrids

Power quality improvement using fuzzy logic-based compensation in a hybrid power system

Distributed Control and Communication Strategies in Networked Microgrids

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