Distributed control of multiple-bus microgrid with paralleled distributed generators

Fan, Bo; Peng, Jiangkai; Duan, Jiajun; Yang, Qinmin; Liu, Wenxin

doi:10.1109/jas.2019.1911477

Cited by 35 publications

(17 citation statements)

References 26 publications

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“…At present, distributed control in the development of smart grid and new energy has attracted great attention of scholars and engineers. A distributed consensus-based power sharing algorithm is introduced to determine the power generations of the subsystems, which enhances load current sharing accuracy among the local distributed generators [37]. This paper presents a distributed control technique for voltage, frequency and active/reactive power control of the point of common connection (PCC), AC-grid of a wind farm.…”

Section: Controller Design Of a Multi-machine System With Input Time mentioning

confidence: 99%

A Distributed Cooperative Control Strategy of Offshore Wind Turbine Groups with Input Time Delay

et al. 2020

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With large-scale development of offshore wind power and the increasing scale of power grid interconnection, more and more attention has been drawn to the stable operation of wind power units. When the wide area measurement system (WAMS) is applied to the power system, the time delay mainly occurs in the signal measurement and transmission of the power system. When 10MW wind turbines transmit information through complex communication network, time delay often exists, which leads to the degradation of performance and instability for system. This affects the normal operation of a wind farm. Therefore, in this paper, the distributed control problem of doubly fed wind turbines with input time delay is studied based on the Hamiltonian energy theory. Firstly, the Port-controlled Hamiltonian system with Dissipation (PCH-D) model is implemented with the Hamiltonian energy method. Then, the Casimir function is introduced into the PCH-D model of the single wind turbine system to stabilize the time delay. The wind turbine group is regarded as one network and the distributed control strategy is designed, so that the whole wind turbine cluster can remain stable given a time delay occurring in the range of 30-300 ms. Finally, simulation results show that the output power of the wind turbine cluster with input delay converges to the expected value rapidly and remains stable. Additionally, the system error caused by time delay is greatly reduced. This control method can effectively solve the problem of input time delay and improve the stability of the wind turbine cluster. Moreover, the method proposed in this paper can adopt the conventional time step of dynamic simulation, which is more efficient in calculation. This method has adaptability in transient stability analysis of large-scale power system, however, the third-order mathematical model used in this paper cannot be used to analyze the internal dynamics of the whole power converter.

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Section: Controller Design Of a Multi-machine System With Input Time mentioning

confidence: 99%

A Distributed Cooperative Control Strategy of Offshore Wind Turbine Groups with Input Time Delay

et al. 2020

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“…A predictive current control technique in the stationary frame is being applied to PM BLDC motor in this paper to have combined advantages of predictive control and stationary reference frame. In place of DC supply, micro-grid can be used, and whole system analysis with predictive current control will have PM BLDC motor as an application for micro-grid [33]. This research work will be helpful for that application.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Predictive Current Control Techniques for PM BLDC Motor in Stationary Plane

Trivedi

Keshri

2020

IEEE Access

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In general, PM BLDC motors are injected with square wave phase currents through PI-PWM control in a-b-c reference plane to ensure maximum torque-per-ampere. The operation of PM BLDC motor in a stationary plane has shown considerable simplification in design, and analysis in the control techniques. The present paper considers the injection of square wave phase current through predictive current control strategies in the stationary plane. For the evaluation of performance, cases of deadbeat predictive control, hysteresis based predictive control, and finite control-set model predictive control (FCS-MPC) methods are considered. Control schemes have been designed for 48V, 660W PM BLDC motor. Comparative evaluation is carried out in terms of the harmonic components available in the current and torque, tracking of the current trajectory in the stationary plane in the low and high-speed region, and execution time of all the control methods. Considered predictive methods are tested on an experimental prototype, and control is implemented through digital Signal Processor (DSP) TMS320F28335. Evaluation leads to the conclusion that predictive control performs better than PI-PWM for reducing commutation torque ripple, keeping current harmonics under control. It is observed that predictive control strategies in the stationary plane, improve the torque-speed characteristic to the wider utilization of constant torque zone of operation as compared to conventional strategies.

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“…A MICROGRID generally comprises loads, distributed generations (DGs), and energy storage systems [1]. Usually, the DGs are connected to the microgrid through power electronic devices and regulated by hierarchical controllers to achieve various objectives including active power sharing and frequency regulation [2].…”

Section: Introductionmentioning

confidence: 99%

Distributed Privacy-Preserving Active Power Sharing and Frequency Regulation in Microgrids

Fan

Wang

2021

IEEE Trans. Smart Grid

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To avoid potential privacy threats and associated cyber-security issues in microgrids, this letter presents a distributed active power sharing and frequency regulation method with preserved privacy of local information. In the proposed approach, the transmitted data including the active power outputs and capacities are protected by adding noises to the original ones. Theoretical analysis and verification studies are performed to illustrate the advantages of the proposed method.

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Distributed control of multiple-bus microgrid with paralleled distributed generators

Cited by 35 publications

References 26 publications

A Distributed Cooperative Control Strategy of Offshore Wind Turbine Groups with Input Time Delay

A Distributed Cooperative Control Strategy of Offshore Wind Turbine Groups with Input Time Delay

Evaluation of Predictive Current Control Techniques for PM BLDC Motor in Stationary Plane

Distributed Privacy-Preserving Active Power Sharing and Frequency Regulation in Microgrids

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