Smart Grid, Integration of Renewable Sources and Improvement of Power Quality

Gheorghe, Ștefan; Golovanov, Nicolae; Lazaroiu, George Cristian; Porumb, Radu

doi:10.1109/cscs.2017.98

Cited by 24 publications

(3 citation statements)

References 4 publications

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“…The Smart Grid represents the future of the power system [30]. The SPEER and its control strategy designed and studied in this paper can be well applied in a Smart Grid/Smart House.…”

Section: Discussionmentioning

confidence: 99%

Research on the System and Control Strategy of an AC-DC Hybrid Single-Phase Electric Energy Router

2019

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With the extensive development and use of new energy sources, it has become an urgent issue to solve the problem how to effectively use such energy sources. This paper designs a single-phase electric energy router (SPEER) whose main goal is to solve the problem of optimal operation of the home power system under a high penetration rate of new energy. First, a SPEER structure is presented which has an AC-DC hybrid form to meet the power requirements of all household electrical equipment. Compared with the existing structures, its structural design is more suitable for small-capacity systems, such as home power systems. Next, a reasonable, detailed, and feasible control scheme was designed for each part of the SPEER, so that it has the functions of plug and play, power routing, island detection, and synchronous grid connection, and a seamless coordination management scheme between subsystems was designed. Complete functions make it more intelligent in response to various conditions. Finally, the correctness of the designed SPEER and control strategy was verified by experiment.Electronics 2019, 8, 970 2 of 20 consumers was proposed. By using the distributed hierarchical energy management system (HEMS), energy routing could be achieved to obtain different functions, such as peak load shifting, electricity plan following, etc. However, the HEMS mentioned in the article is cumbersome and impractical. For example, it requires that "users use the human-machine interaction interface such as App. in smartphones to arrange the power consumption time and target". This is obviously not practical, since users' electricity use behavior is often random and uncertain. This requirement is a heavy burden on users. Another study [19] proposed a HEMS based on an energy router. By controlling the switch array, the optimal matching of the power supply and the load is realized, so that the renewable energy is used to the maximum extent. However, this method requires that household appliances are classified according to the degree of sensitivity to the power quality, divided into sensitive and non-sensitive loads, and even the same type of household appliance is different for different people, which complicates the previous planning. At the same time, this solution requires a switch array, which greatly increases the cost. Based on the functional requirements of EER, a preliminary analysis of its structural construction was provided [20,21], but it was only a theoretical analysis, and no specific control scheme and result verification was provided.Combined with existing research, this paper proposes a small-capacity household-level electric energy router architecture. It has a rich electrical interface to meet the needs of various household AC and DC load powers and tries to fully develop new energy sources such as rooftop photovoltaics [22]. Because the entire device uses a decentralized control strategy, distributed power generation equipment and various home appliances can be operated by plug-and-play, and the control is simple and co...

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“…The Smart Grid represents the future of the power system [30]. The SPEER and its control strategy designed and studied in this paper can be well applied in a Smart Grid/Smart House.…”

Section: Discussionmentioning

confidence: 99%

Research on the System and Control Strategy of an AC-DC Hybrid Single-Phase Electric Energy Router

2019

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“…Therefore, this application for the electric boiler will make it smarter than a controllable on/off dump load as utilized under current DSM practice; so, let it be called "Smart Boiler" from now on. Such properties, targeting the improvement of the quality of supply, become requirements for the infrastructure of smart grids [9]. Currently, the only controllable domestic devices that are considered for the provision of such Smart Grid services (reactive power or harmonics compensation), are based on battery storage or RES, which are definitely not as common and inexpensive as boilers [10].…”

Section: Introductionmentioning

confidence: 99%

Smart Boilers: Grid Support Services from Non-Critical Loads

Vovos¹,

Georgakas²

2020

JPEE

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“…However, they used passive power filters only. The impact of connecting renewable sources to smart grids regarding power quality was presented in [17], but the authors did not introduce any power filters for the mentioned power quality problem mitigation in their work. The design phases related to an open UPQC installed in a real low voltage distribution grid were discussed in [18].…”

Section: Introductionmentioning

confidence: 99%

Power quality improvement of smart microgrids using EMS-based fuzzy controlled UPQC

Hossam-Eldin¹,

Mansour²,

Elgamal³

et al. 2019

Turk J Elec Eng & Comp Sci

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The prevalent power quality problems in smart microgrids and power distribution systems are voltage sag, voltage swell, and harmonic distortion. The achievement of pure sinusoidal waveform with proper magnitude and phase is currently a great research and development concern. The aim of this paper is to evaluate and mitigate the smart microgrid harmonics, voltage sag, and voltage swell throughout a 24-h cycle, taking into consideration the variation in solar power generation due to changes in irradiation received by photovoltaic cells, the variation in wind power generation due to changes in wind speed, and the variation of linear and nonlinear load profiles during the day’s cycle. The mitigation of the power quality issues manifested in current harmonics, voltage sag, and voltage swell is achieved through the implementation of a new fully fuzzy controlled unified power quality conditioner (UPQC). It is controlled by an energy management system (EMS). This paper introduces a new control system for the UPQC using full fuzzy logic control. Moreover, fuzzy control is used in current control instead of proportional integral controllers so that it has acceptable performance over a wide range of operating points. The novel approach of an EMS-connected UPQC activates the UPQC at the required time only into the grid. This approach has many benefits by increasing the UPQC lifetime. The effect of the proposed system on the aforementioned issues has been validated through simulation by MATLAB/Simulink. The results are compared with those obtained by conventional methods. The results verify the superior performance of the proposed UPQC to mitigate the problems of current total harmonic distortions, voltage sag, and voltage swell under different operating conditions during the monitoring period.

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Smart Grid, Integration of Renewable Sources and Improvement of Power Quality

Cited by 24 publications

References 4 publications

Research on the System and Control Strategy of an AC-DC Hybrid Single-Phase Electric Energy Router

Research on the System and Control Strategy of an AC-DC Hybrid Single-Phase Electric Energy Router

Smart Boilers: Grid Support Services from Non-Critical Loads

Power quality improvement of smart microgrids using EMS-based fuzzy controlled UPQC

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