Networked microgrids (NMGs) provide a promising solution for accommodating various distributed energy resources (DERs) and enhancing the system performance in terms of reliability, resilience, flexibility, efficiency. With penetration MGs, communication-based control is playing an increasingly important role NMGs coordinating multitude heterogeneous spatially DERs, which feature enhanced efficiency, scalability, privacy-preserving as compared with conventional centralized control. This...

Considering the high penetration of distributed energy resources (DERs), extensive communication networks are deemed necessary to realize coordinated control DERs in microgrids (MGs). The reliance on introduces potential cyber security issues into MGs. However, such attacks difficult be detected when a global situational awareness is lacking systems. In this paper, we analyze impacts cyber-attacks links, local controllers, and master controller, which would drive MGs away from optimal...

To account for the probability distribution information of uncertain scenarios, this letter proposes a novel interval power flow (NIPF) method based on hybrid sets. Firstly, NIPF model is established by integrating box-ellipsoid sets characterizing uncertainties in (IPF), which solved optimizing-scenario (OSM). Then, multivariate statistical analysis (MSAM) and chance-constrained programming-based (CCPM) are proposed determining optimal radii ellipsoid set side length box under two...

The renewable energy-based hydrogen production can lead to the integrated electric power and system (IPHS) offer a pathway sustainable energy utilization. Hydrogen is mainly transported via tube trailers (HTs), making (HES) operation quite different from those of other technologies. This paper proposes an optimal IPHS strategy which utilizes HT for transportation. proposed coordinates generation, transportation, storage stages considering constrained operations (EPS), transportation system,...

A two-layer optimal consensus-based distributed control strategy is proposed for the coordinated operation of networked microgrids (MGs). Several MG objectives are optimized using strategy, including frequency/voltage regulation, proportional active power sharing, and smooth islanding/reconnection operation. The global objective function MGs decomposed into a series local assigned to participating energy resources (DERs). In optimization, each layer realized in manner which DER state...

Compared with centralized control, distributed control for microgrids offers higher reliability and scalability. However, faces severe problems maintaining the microgrid cybersecurity, which is due to absence of central controllers monitoring participating generation unit activities. This article proposes an observer-based resilient AC that estimates compensates false data injection (FDI) attacks on sensors actuators. The proposed relies integrated structure, restores rated frequency/voltage...

The tight coupling of power distribution system (PDS) and district heating (DHS) makes it imperative to devise a coordinated strategy for the resilience enhancement integrated electric (IEHS) in natural disasters. PDS reconfiguration serves as critical tool service restoration by optimal adjustment topology with designated tie sectionalizing switches. Similarly, DHS provides viable solution countering disasters supply targeted valves DHS. In this paper, multi-stage considering is proposed,...

A two-stage load shedding scheme is presented to cope with potential power deficits caused by microgrid islanding. Coordinated the fast response of inverter-based grid-forming distributed energy resources, proposed approach estimates at each stage and resulting flow redistribution. The first will cease any rapid frequency decline in which locally measured deviation employed guide level process. Once a new steady state reached end stage, second activated, performs according priorities....

Networking a series of autonomous microgrids (MGs) is strategic effort toward the resilience enhancement in extreme conditions. In this paper, flexible division and unification control strategies are proposed to help networked MGs prepare adequately for events adapt comprehensively subsequent changing conditions, which enhance system resilience. According strategies, can switch between two distinct modes by utilizing sparse communication network without requiring any additional...

In this paper, a two-layer control scheme is proposed to improve the optimal economic operation of hybrid ac/dc microgrids. The consists lower layer representing continuous dynamic model with solution that analogous iterative decentralized dispatch problem for ac and dc sections. upper layer, which includes primary, secondary, tertiary coordinations in interlinking converters (ICs), regulates power exchanges between two Local controllers sections are coordinated regulate microgrid frequency...

Energy flow calculation is a fundamental problem of the integrated power and gas system (IPGS) operation planning. However, nonlinear model introduces major challenges to energy calculation. In this paper, we propose tractably convex optimization solve in IPGSs. It demonstrated that proposed has same optimal solution as original steady model. Also, piecewise linearization adopted tightly linearize objective function model, which transforms formulated into linear program one. Thus,...

The widespread adoption of communication and control infrastructures will not only improve the microgrid system performance in normal conditions but also increase cybersecurity risks. Potential cyberattacks can deteriorate performances by corrupting intercepting data exchanges among participating DERs, whereby microgrids deviate from desired operating stable operations are jeopardized. In this paper, a cross-layer strategy is proposed to enhance resilience against false injection (FDI)...

In this article, a privacy-preserving distributed control strategy is proposed for realizing the optimal economic operation of islanded reconfigurable microgrids (MGs). Using strategy, participating DERs would only exchange frequency data with their neighbors while generation are held privately by each participant. The reduces communication burdens among and exploits operational flexibility MGs. It also demonstrates versatility considering variety objectives without requiring any additional...

Deploying distributed renewable energy at the demand side is an important measure to implement a sustainable society. However, massive small solar and wind generation units are beyond control of central operator. To encourage users participate in management reduce dependence on dispatchable resources, peer-to-peer sharing scheme proposed which releases flexibility side. Every user makes decision individually considering only local constraints; microgrid operator announces prices subjective...

Renewable energy sources (RESs) are highly penetrated in power systems through phase-locked loop (PLL) synchronized converters. Under severe grid voltage sags, PLL-synchronized RES system is susceptive to transient instability and tripping from the due inappropriate current injection. The existing literatures mainly focus on synchronization issues of a single grid-connected system, effect interaction between them rarely studied. To fill this gap, paper aims clarify mechanism characterize...

Truck-mounted mobile emergency resources (MERs) play a significant role in microgrid formation and regulation for power system resilience enhancement. This paper proposes distributed fixed-time secondary control (DFSC) scheme to regulate the frequency active sharing islanded microgrids with MERs. The proposed DFSC is designed based on general directed communication graph which considers MER characteristics (e.g., mobility, flexibility, potential cyber threats). Each DER receives data from...

Voltage unbalance (VU) in an active distribution network (ADN) could result increased losses and even system instability. The additional uncertainties embedded ADN might lead to serious VU problems with the proliferation of single-phase distributed energy resources (DERs). This paper proposes a two-stage uncertainty quantification mitigation (UQUM) framework cope corresponding quantify mitigate impacts variable DERs on VU. In Stage one, global sensitivity analysis based Rosenblatt...

In this paper, a compartmentalization strategy is proposed for the economic operation of hybrid AC/DC microgrid. The microgrid will be compartmentalized into several independently controlled and coordinated AC DC nanogrids. Accordingly, optimal consists two segments, including power sharing among local DERs in individual nanogrids interconnected For each nanogrid, frequency/voltage restoration are realized simultaneously without need any real-time communication. microgrid, nanogrid...

In this paper, a hierarchical bipartite graph (HBG) matching method is proposed to promote transactive vehicle-to-vehicle (V2V) power exchanges in distribution system. A system which includes EVs divided into series of subsystems according EV locations, where V2V are optimized for scheduling charging/discharging periods among transacting each subsystem. Each subsystem's surplus or deficit will then be regulated by neighboring and the utility grid. The one-to-multiple multiple-to-one modes...

Battery storage management that involves multiple revenue streams would affect customers' monthly electricity costs. In this article, a three-level model of battery is proposed for achieving various functionalities, including energy arbitrage, peak shaving, and frequency regulation. The original joint optimization problem with the horizon one month decomposed into three subproblems according to time scales, covering daily power baseline decision, hourly regulation capacity submission,...