Decentralized Cooperative Control Strategy of Microsources for Stabilizing Autonomous VSC-Based Microgrids

Divshali, Poria Hasananpor; Alimardani, A.; Hosseinian, Seyed Hossein; Abedi, Mehrdad

doi:10.1109/tpwrs.2012.2188914

Cited by 138 publications

(72 citation statements)

References 28 publications

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“…Therefore security factors shall be fully considered at the stage of power system planning, and narrow the scale of accident, reduce the loss of social economy to the greatest extent. To those traditional power system which only contains synchronous generator and loads, the main theory to determine power system subareas are: graph theory [7], slow coherency [8][9] and intelligent optimization [10] [11]. However, in traditional power system there are few distribution generators, storages and other new power devices such as smart meter, PMU, those methods for subareas above cannot apply to complex power system to answer for cyber security.…”

Section: Planning Methodsmentioning

confidence: 99%

Key issues and technical route of cyber physical distribution system

Zheng

et al. 2017

IOP Conf. Ser.: Earth Environ. Sci.

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Abstract. Relying on the National High Technology Research and Development Program, this paper introduced the key issues in Cyber Physical Distribution System (CPDS), mainly includes: composite modelling method and interaction mechanism, system planning method, security defence technology, distributed control theory. Then on this basis, the corresponding technical route is proposed, and a more detailed research framework along with main schemes to be adopted is also presented. IntroductionCyber physical system integrates computation, networks and physical environments into a multidimensional complex system via 3C (Computation, Communication, Control) technology, and enables large-scale project to realize real-time perceiving, dynamic controlling and information services [1]- [2]. As the level of the utilization of information enhances unceasingly, Modern distribution system has developed to be a multi-dimensional cyber physical distribution system (CPDS) which highly relies on information, and follows traditional power system process [1][3]- [4].Although the traditional distribution system which has a complete "produce-supply-users" ternary coupling mode, has been mature enough, with varies of distributional sources, storages, protections and sensors plugging in, acute problems such as distribution system topology, information interaction, cyber-physical integration come into sight.Compared to traditional distribution system, CPDS has distinguishing features:(1) Multi-source isomerism, complex network. The distributional loads and the intermittent renewable sources changed the feature that power flows in single direction, and the exponential growth in the sensors along with communication devices, also causedthe physical topology to grow enormous and complex, and its dynamic behavior becomes non-linear, uncertain, time-varying, and isomeric.(2) Frequent interaction, andhence vulnerable Since smart meters, distributional storages and sources plug in, to realize massive information collecting, transferring, controlling and demand side response, power flow and information flow interacts frequently, thus information security becomes a serious problem. While the communication protocol, which is open and standardized, also bring new hidden dangers to traditional power system field, such as dispatching automation, relay protection and safety equipment automation, load control,

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Section: Planning Methodsmentioning

confidence: 99%

Key issues and technical route of cyber physical distribution system

Zheng

et al. 2017

IOP Conf. Ser.: Earth Environ. Sci.

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“…A(t) = r 1 1 − I C I max q (12) where I C is the number of current iterations in the optimization process, both r and r 1 are uniform random numbers between 0 and 1, and q is the shape parameter used in MNUM.…”

Section: Moeo-fopid-based Frequency Controller Optimal Design Algoritmentioning

confidence: 99%

“…In recent years, some frequency control methods for microgrids or hybrid power systems have been proposed by using traditional proportional-integral-derivative (PID) controllers or robust controllers [7][8][9][10][11][12][13][14][15][16]. For example, a hybrid method by combining particle swarm optimization (PSO) and fuzzy logic [11] is proposed to design proportional-integral (PI)-based frequency controllers for an alternating current microgrid.…”

Section: Introductionmentioning

confidence: 99%

Design of a Fractional Order Frequency PID Controller for an Islanded Microgrid: A Multi-Objective Extremal Optimization Method

et al. 2017

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Abstract:Fractional order proportional-integral-derivative(FOPID) controllers have attracted increasing attentions recently due to their better control performance than the traditional integer-order proportional-integral-derivative (PID) controllers. However, there are only few studies concerning the fractional order control of microgrids based on evolutionary algorithms. From the perspective of multi-objective optimization, this paper presents an effective FOPID based frequency controller design method called MOEO-FOPID for an islanded microgrid by using a Multi-objective extremal optimization (MOEO) algorithm to minimize frequency deviation and controller output signal simultaneously in order to improve finally the efficient operation of distributed generations and energy storage devices. Its superiority to nondominated sorting genetic algorithm-II (NSGA-II) based FOPID/PID controllers and other recently reported single-objective evolutionary algorithms such as Kriging-based surrogate modeling and real-coded population extremal optimization-based FOPID controllers is demonstrated by the simulation studies on a typical islanded microgrid in terms of the control performance including frequency deviation, deficit grid power, controller output signal and robustness.

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“…In the first step of control, the DGU controller designed based on the droop method [16,31] shares power among the intermittent and nonintermittent DGUs for amending the stability margin of the system, regulating voltage, and maintaining f .…”

Section: Proposed Control Schemementioning

confidence: 99%

“…Indeed, for preventing network collapse and ensuring competent performance of the microgrid, in particular during islanding mode, LM is necessary [5,16]. LM can be performed by a variety of methods [27,28].…”

Section: Introductionmentioning

confidence: 99%

Multitier decentralized control scheme using energy storage unit and load management in inverter-based AC microgrids

Nourollah¹,

Pirayesh²,

Fripp³

2017

Turk J Elec Eng & Comp Sci

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Abstract:The use of renewable energies, such as wind and solar, is rising in microgrids. However, because of their intermittent nature, achieving a stable system in spite of the fluctuations of generation and demand is very difficult.Aiming to increase the stability margin of AC islanded microgrids comprising nondeterministic resources, properly share real power (P), and keep the network frequency ( f ) at nominal value, this study exploits the presence of energy storage units (ESUs) along with a load-shedding scheme. To this end, this study proposes a multitier decentralized control strategy that is based on frequency and includes three control schemes, distributed generation unit (DGU) control, ESU control, and local loads control (LLC). These controllers operate simultaneously. The DGU controller shares the loads among DGUs in accordance with the frequency droop method. On the other hand, the ESU controller controls the production of ESUs and also the LLCs manage the loads and dump-load of the microgrid. This method ensures the proper operation of AC microgrids that comprise intermittent resources under stand-alone conditions and despite numerous events. The time responses of P and f prove the high performance of the method. The simulations are performed and coded in m-file of MATLAB.

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Decentralized Cooperative Control Strategy of Microsources for Stabilizing Autonomous VSC-Based Microgrids

Cited by 138 publications

References 28 publications

Key issues and technical route of cyber physical distribution system

Key issues and technical route of cyber physical distribution system

Design of a Fractional Order Frequency PID Controller for an Islanded Microgrid: A Multi-Objective Extremal Optimization Method

Multitier decentralized control scheme using energy storage unit and load management in inverter-based AC microgrids

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