Fully distributed control to coordinate charging efficiencies for energy storage systems

Liu, Wei; Gu, Wei; Yuan, Xiaodong; Zhang, Kaifeng

doi:10.1007/s40565-017-0373-1

Cited by 15 publications

(5 citation statements)

References 30 publications

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“…In [15], a robust distributed power allocation strategy considering cyber attack is proposed. The other relevant results can be found in [16]- [19].…”

Section: Introductionmentioning

confidence: 89%

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Fully Distributed Economic Dispatch for Cyber-physical Power System with Time Delays and Channel Noises

Zhang

Sun

2022

Journal of Modern Power Systems and Clean Energy

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Economic dispatch problem (EDP) is a fundamental optimization problem in power system operation, which aims at minimizing the total generation cost. In fact, the power grid is becoming a cyber-physical power system (CPPS). Therefore, the quality of communication is a key point. In this paper, considering two important factors, i.e., time delays and channel noises, a fully distributed consensus based algorithm is proposed for solving EDP. The critical maximum allowable upper bounds of heterogeneous communication delays and self-delays are obtained. It should be pointed out that the proposed algorithm can be robust against the time-varying delays and channel noises considering generator constraints. In addition, even with time-varying delays and channel noises, the power balance of supply and demand is not broken during the optimization. Several simulation studies are presented to validate the correctness and superiority of the developed results.

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“…In [15], a robust distributed power allocation strategy considering cyber attack is proposed. The other relevant results can be found in [16]- [19].…”

Section: Introductionmentioning

confidence: 89%

“…According to (19), we can prove that det{sI + diag{ρβ -1 i d i }× (D T (s) -A τ (s))}= 0 and det{I + G r (s)}= 0 have the same roots in the open right-half complex plane.…”

Section: Ded With Heterogeneous Time Delaysmentioning

confidence: 99%

Fully Distributed Economic Dispatch for Cyber-physical Power System with Time Delays and Channel Noises

Zhang

Sun

2022

Journal of Modern Power Systems and Clean Energy

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“…where f sw,on and f sw,off are the switching frequency in switch-on period and switch-off period of the device. As it is noted in (7), (8) and (10), semiconductor junction temperature has an extreme effect on energy loss. Therefore, in addition to power loss simulations, a closed loop thermal simulation is modeled to calculate the power loss of selected ICs.…”

Section: Semiconductor Power Loss Comparison Of Selected Icsmentioning

confidence: 94%

“…E sw (n)= E swon (n) + E swoff (n) (9) where E sw,on is switch-on energy losses and E sw,off is switchoff energy losses. Switch-on and switch-off energy losses are also related to semiconductor current and T j , which is explained in (10).…”

Section: Semiconductor Power Loss Comparison Of Selected Icsmentioning

confidence: 99%

Evaluation of Feasible Interlinking Converters in a Bipolar Hybrid Microgrid

Najafi

Viki

Shahparasti

2020

Journal of Modern Power Systems and Clean Energy

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A bipolar hybrid microgrid is a new topology which benefits from the advantages of both alternating current (AC) and direct current (DC) microgrids. Interlinking AC/DC converter is the key of this topology which has the following characteristics: being able to provide two equal pole voltages in DC side; complying with the standards of current quality at AC side; being able to control active and reactive power independently in AC side, and transmitting bidirectional power. In this paper, two categories of power converters including single-stage and two-stage converters are proposed for this topology. A new cost-effective control strategy is added to the control of general grid-connected converter for each interlinking converter, and the control of autonomous DC-link pole voltage for both candidates is achieved. Detailed simulations based on the designed control strategies are conducted to validate the function of control strategies under the operation conditions of different DC sides. The performances of two selected interlinking converters with balanced and unbalanced DC loads are analyzed. Suggested power quality of microgrid and total harmonic distortion (THD) analysis are demonstrated in grid-tied and islanded modes. Eventually, semiconductor power loss simulations based on a closed-loop thermal network simulation are conducted. Thereby, the mutual effects of power loss and initial junction temperature are investigated.

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“…In general, a microgrid integrates distributed energy resources (DERs), including non-dispatchable renewables and dispatchable local generators, and flexible operation modes, i.e., grid-connected or stand-alone modes [1][2][3]. To realize the economic operation of microgrids, it is indispensable to optimize energy scheduling, for coordinating the internal DERs of microgrids and an external grid, to minimize the overall operation cost while satisfying the time-varying load demand [4,5].…”

Section: Introductionmentioning

confidence: 99%

A retroactive approach to microgrid real-time scheduling in quest of perfect dispatch solution

Jia

Lyu

Lai

et al. 2019

J. Mod. Power Syst. Clean Energy

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As an emerging paradigm in distributed power systems, microgrids provide promising solutions to local renewable energy generation and load demand satisfaction. However, the intermittency of renewables and temporal uncertainty in electrical load create great challenges to energy scheduling, especially for small-scale microgrids. Instead of deploying stochastic models to cope with such challenges, this paper presents a retroactive approach to real-time energy scheduling, which is prediction-independent and computationally efficient. Extensive case studies were conducted using 3-year-long real-life system data, and the results of simulations show that the cost difference between the proposed retroactive approach and perfect dispatch is less than 11% on average, which suggests better performance than model predictive control with the cost difference at 30% compared to the perfect dispatch. . His current interests include power system optimization, artificial neural networks, energy system modelling, data analytics, and energy economics for renewable energy and storage systems.Zhao XU received the B.Eng., M.Eng. and Ph.D.interests include demand side, grid integration of wind and solar power, electricity market planning and management, and artificial intelligence (AI) applications.Minghua CHEN received the B.Eng. and M.S. degrees from the

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Fully distributed control to coordinate charging efficiencies for energy storage systems

Cited by 15 publications

References 30 publications

Fully Distributed Economic Dispatch for Cyber-physical Power System with Time Delays and Channel Noises

Fully Distributed Economic Dispatch for Cyber-physical Power System with Time Delays and Channel Noises

Evaluation of Feasible Interlinking Converters in a Bipolar Hybrid Microgrid

A retroactive approach to microgrid real-time scheduling in quest of perfect dispatch solution

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