Coordinated Control of SFCL and SMES for Transient Performance Improvement of Microgrid With Multiple DG Units

Chen, Lei; He, Hailong; Zhu, Lin; Guo, Fei; Shu, Zhengyu; Shu, Xiaojian; Yang, Jun

doi:10.1109/cjece.2016.2520496

Cited by 22 publications

(14 citation statements)

References 41 publications

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“…Conventionally, external devices were installed in the MG system to improve the LVRT capability [10][11][12][13][14]. In [11], the distribution static synchronous compensator (DSTATCOM) is used for supplying additional reactive power to compensate for the voltage drop.…”

Section: Introductionmentioning

confidence: 99%

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Low-Voltage Ride-Through Operation of Grid-Connected Microgrid Using Consensus-Based Distributed Control

et al. 2018

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Since the penetration of distributed energy resources (DERs) and energy storage systems (ESSs) into the microgrid (MG) system has increased significantly, the sudden disconnection of DERs and ESSs might affect the stability and reliability of the whole MG system. The low-voltage ride-through (LVRT) capability to maintain stable operation of the MG system should be considered. The main contribution of this study is to propose a distributed control, based on a dynamic consensus algorithm for LVRT operation of the MG system. The proposed control method is based on a hierarchical control that consists of primary and secondary layers. The primary layer is in charge of power regulation, while the secondary layer is responsible for the LVRT operation of the MG system. The droop controller is used in the primary layer to maintain power sharing among parallel-distributed generators in the MG system. The dynamic consensus algorithm is used in the secondary layer to control the accurate reactive power sharing and voltage restoration for LVRT operation. A comparison study on the proposed control method and centralized control method is presented in this study to show the effectiveness of the proposed controller. Different scenarios of communication failures are carried out to show the reliability of the proposed control method. The tested MG system and proposed controller are modeled in a MATLAB/Simulink environment to show the feasibility of the proposed control method.

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Section: Introductionmentioning

confidence: 99%

“…It was shown that the use of SFCL showed better control effects on power stabilization. In [14], the SFLC and superconducting magnetic energy storage (SMES) were combined to improve the system voltage during disturbance. However, these LVRT strategies are costly due to the installation of additional devices.…”

Section: Introductionmentioning

confidence: 99%

Low-Voltage Ride-Through Operation of Grid-Connected Microgrid Using Consensus-Based Distributed Control

et al. 2018

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“…The analysis techniques to observe the stability of a power system are presented in [21][22][23][24]. The coordination control for multiple DG units to improve transient performance is presented in [25].…”

Section: Introductionmentioning

confidence: 99%

Analysis and Optimization of the Coordinated Multi-VSG Sources

et al. 2018

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The penetration of renewable energy sources (RES) into a grid via inverters causes a stability issue due to the absence of an inertia. A virtual synchronous generator (VSG) is designed to provide an artificial inertia and droop control to the grid-connected inverters. The different power ratings of multiple VSGs create complications in the coordination due to unequal droop or damping coefficient ‘ D ’. The dependency of a factor ‘ D ’ on P − ω droop control under static state and a damping behavior during power oscillation under dynamic state is analyzed by considering three cases on multi-VSGs microgrid system and the equivalent equations of P − ω droop control are derived for all three cases to see the effect of a load on the overall system’s frequency. A master–slave configuration of a VSG is proposed to deliver maximum power during static state, but provides P − ω control during the dynamic state. Simulation results verify the improvement introduced by the proposed VSG control.

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“…As depicted Figure 2 with a SEE connected in parallel with the DC-link capacitor, it can be represented as, for instance, ultracapacitors or batteries [14]. There are also other SEEs as superconducting magnetic energy storage (SMES) [15] and flywheel [16]. However, once they are not voltage-source type, it is necessary to use power converters to interface them with the DC-link voltage.…”

Section: Introductionmentioning

confidence: 99%

New Trends in Active Power Filter for Modern Power Grids

Monteiro¹

2018

Power System Harmonics - Analysis, Effects and Mitigation Solutions for Power Quality Improvement

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From harmonic compensation to interface with renewable energy sources, active filters are capable to improve power quality, increase the reliability of the power grid, and contribute to make feasible the implementation of decentralized microgrids. In this scenario, this chapter provides a discussion involving new trends on distribution power grids, with active power filters playing an important key role. Considering the aforementioned explanation, part of the chapter covers active filter applications for power grids. In sequence, we discuss time domain control algorithms to identify power quality disturbances or other problems that may compromise the power grid reliability, with simulation results to evaluate the performance of the active filters for compensating power quality problems under transient-and steady-state conditions. Next, we discuss the integration of active filters with renewable energy sources (RENs) including a brief explanation of maximum power point tracking (MPPT) algorithms and other controllers considering a decentralized microgrid scenario with several active filters connected at the same grid circuit.

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Coordinated Control of SFCL and SMES for Transient Performance Improvement of Microgrid With Multiple DG Units

Cited by 22 publications

References 41 publications

Low-Voltage Ride-Through Operation of Grid-Connected Microgrid Using Consensus-Based Distributed Control

Low-Voltage Ride-Through Operation of Grid-Connected Microgrid Using Consensus-Based Distributed Control

Analysis and Optimization of the Coordinated Multi-VSG Sources

New Trends in Active Power Filter for Modern Power Grids

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