Power grid
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Revisiting Grid-Forming and Grid-Following Inverters: A Duality Theory Open
Power electronic converters for integrating renewable energy resources into power systems can be divided into grid-forming and grid-following inverters. They possess certain similarities, but several important differences, which means that…
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Real-World Subsynchronous Oscillation Events in Power Grids With High Penetrations of Inverter-Based Resources Open
This paper presents a survey of real-world sub-synchronous oscillation events associated with inverter-based resources (IBR) over the past decade. The focus is on those oscillations in the subsynchronous frequency range known to be influen…
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Grid Impact of Electric Vehicle Fast Charging Stations: Trends, Standards, Issues and Mitigation Measures - An Overview Open
With growing concern on climate change, widespread adoption of electric vehicles (EVs) is important. One of the main barriers to EV acceptance is range anxiety, which can be alleviated by fast charging (FC). The main technology constraints…
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Small vulnerable sets determine large network cascades in power grids Open
The domino effect in power failure Sometimes a power failure can be fairly local, but other times, a seemingly identical initial failure can cascade to cause a massive and costly breakdown in the system. Yang et al. built a model for the N…
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A Parallel Restoration for Black Start of Microgrids Considering Characteristics of Distributed Generations Open
The black start capability is vital for microgrids, which can potentially improve the reliability of the power grid. This paper proposes a black start strategy for microgrids based on a parallel restoration strategy. Considering the charac…
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Impact of Power Grid Strength and PLL Parameters on Stability of Grid-Connected DFIG Wind Farm Open
This paper investigates the impact of power grid strength and phase-locked loop (PLL) parameters on small signal stability of grid-connected doubly fed induction generator (DFIG)-based wind farm. Modal analysis of the grid-connected DFIG w…
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A VMD and LSTM Based Hybrid Model of Load Forecasting for Power Grid Security Open
As the basis for the static security of the power grid, power load forecasting directly affects the safety of grid operation, the rationality of grid planning, and the economy of supply-demand balance. However, various factors lead to dras…
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SimBench—A Benchmark Dataset of Electric Power Systems to Compare Innovative Solutions Based on Power Flow Analysis Open
Publicly accessible, elaborated grid datasets, i.e., benchmark grids, are well suited to publish and compare methods or study results. Similarly, developing innovative tools and algorithms in the fields of grid planning and grid operation …
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STPA-SafeSec: Safety and security analysis for cyber-physical systems Open
Cyber-physical systems tightly integrate physical processes and information and communication technologies. As today's critical infrastructures, e.g., the power grid or water distribution networks, are complex cyber-physical systems, ensur…
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A Review on Grid-Connected Converter Control for Short-Circuit Power Provision Under Grid Unbalanced Faults Open
As an increasing amount of converter-based generation on power electronics is connected to power systems, transmission system operators (TSOs) are revising the grid connection requirements to streamline the connectivity of the devices to m…
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Cybersecurity of Smart Electric Vehicle Charging: A Power Grid Perspective Open
With the roll-out of electric vehicles (EVs), the automobile industry is transitioning away from conventional gasoline-fueled vehicles. As a result, the EV charging demand is continuously growing and to meet this growing demand, various ty…
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Robust Analytic Design of Power-Synchronization Control Open
This paper addresses robust design of the active-power and dc-link control loops of power-synchronization control. Robustness is obtained by analytic gain selections which give large enough stability margins. The proposed design allows rob…
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Inertia and the Power Grid: A Guide Without the Spin Open
This guide provides an overview of inertia’s role in the evolving power system. It describes the sources of inertia in the grid, the intrinsic interplay of inertia and other grid services, the factors that impact the amount of and need for…
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Diagnostic Measurements for Power Transformers Open
With the increasing age of the primary equipment of the electrical grids there exists also an increasing need to know its internal condition. For this purpose, off- and online diagnostic methods and systems for power transformers have been…
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Cybersecurity in Power Grids: Challenges and Opportunities Open
Increasing volatilities within power transmission and distribution force power grid operators to amplify their use of communication infrastructure to monitor and control their grid. The resulting increase in communication creates a larger …
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Cyber Security in Control of Grid-Tied Power Electronic Converters—Challenges and Vulnerabilities Open
Grid tied power electronic converters are key enabling technologies for interfacing renewable energy sources, energy storage, electrical vehicles, microgrids and high voltage dc transmission lines with the electrical power grid. As number …
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Power Quality in Grid connected Renewable Energy Systems: Role of Custom Power Devices Open
This paper presents a technical review of power quality problems associated with the renewable based distributed generation systems and how custom power devices (CPD) such as STATCOM, DVR and UPQC play an important role in power quality im…
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Does basic energy access generate socioeconomic benefits? A field experiment with off-grid solar power in India Open
Basic solar microgrids can significantly improve access to electricity in an affordable manner, but they generate few socioeconomic benefits.
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Digital twin and its application to power grid online analysis Open
Digital twin (DT) framework is introduced in the context of application for power grid online analysis. In the development process of a new power grid real-time online analysis system, an online analysis digital twin (OADT) has been implem…
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A multi energy storage system model based on electricity heat and hydrogen coordinated optimization for power grid flexibility Open
Based on decreasing the flexibility of the power grid through the integration of large-scale renewable energy, a multi-energy storage system architectural model and its coordination operational strategy with the same flexibility as in the …
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A Distribution Level Wide Area Monitoring System for the Electric Power Grid–FNET/GridEye Open
The wide area monitoring system (WAMS) is considered a pivotal component of future electric power grids. As a pilot WAMS that has been operated for more than a decade, the frequency monitoring network FNET/GridEye makes use of hundreds of …
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Reliability Assessment of Power System Considering the Impact of Renewable Energy Sources Integration Into Grid With Advanced Intelligent Strategies Open
Power industry is incidenting a change from the present electric grid to a more secure, reliable, capable and advanced smart grid. Renewable energy sources such as wind and solar energy systems will be incorporated and potentially in bid s…
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From Reliability to Resilience: Planning the Grid Against the Extremes Open
Although extreme events, mainly natural disasters and climate change-driven severe weather, are the result of naturally occurring processes, power system planners, regulators, and policy makers do not usually recognize them within network …
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The Role of Power Line Communications in the Smart Grid Revisited: Applications, Challenges, and Research Initiatives Open
Power line communications (PLC) have been an active research area for many years and it is still the case, mainly because they present economic and technical natural advantages for a wide range of applications using the existing electrical…
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Review of Electric Vehicle Charger Cybersecurity Vulnerabilities, Potential Impacts, and Defenses Open
Worldwide growth in electric vehicle use is prompting new installations of private and public electric vehicle supply equipment (EVSE). EVSE devices support the electrification of the transportation industry but also represent a linchpin f…
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Literature Review of Power System Blackouts Open
Blackouts in a power system can occur in several ways. How to prevent a blackout is an important issue in power systems. The reasons to cause blackouts can be the overloading of transmission lines, ice coating on lines, failure of protecti…
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Risks in the European Transmission System and a Novel Restoration Strategy for a Power System after a Major Blackout Open
Many citizens of European countries may soon experience a long and extensive blackout. The lack of predictability in the output of renewable energy sources, aggravating the problem of consistently matching supply with demand on electric gr…
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Coordination of Wind Farm and Pumped-Storage Hydro for a Self-Healing Power Grid Open
The increasing penetration of wind energy poses great challenges to the operation of power systems in normal and emergency states. However, energy storage technologies can help accommodate wind power uncertainty and variability due to thei…
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Noninvasive Online Parametric Identification of Three-Phase AC Power Impedances to Assess the Stability of Grid-Tied Power Electronic Inverters in LV Networks Open
This paper presents a noninvasive online parametric identification of three-phase AC power impedances to assess small-signal stability of grid-tied inverter systems by using well-known impedance-ratio-based stability criteria. The identifi…
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Energy management and optimization of vehicle-to-grid systems for wind power integration Open
An approach to smoothing the fluctuations of large-scale wind power is investigated using vehicle-to-grid (V2G) systems. First, an energy management and optimization system is designed and modeled. By using the wavelet packet decomposition…