With increase of practical power system complexity, online stability assessment and control is more important. Application the traditional model-driven methods always limited by contradiction between accuracy efficiency, while data-driven demonstrate strong abilities for decision-making support with advancement various data mining techniques. Instead direct application in system, this paper first discusses feasible integration approaches based on existing achievements, then, proposes to...

In this paper, a 10 kW/500 r/min nine-phase flux-switching permanent magnet (FSPM) machine for wind power generation system is proposed, analyzed, and designed. First, different topologies with alternative stator slots rotor poles combinations are compared. Then, both the split ratio pole width, which have major influences on electromagnetic performance, optimized, whereas static characteristics, viz., phase PM flux linkage electromotive force, cogging torque, inductance, predicted by 2-D...

Accurate and prompt transient stability prediction is one of the effective ways to reduce risk blackout or cascading failures. In an effort achieve improvements in time efficiency accuracy, a new method combining trajectory fitting (TF) extreme learning machine (ELM) based on two‐stage process, named hybrid method, proposed here. ELM‐based implemented central station ensure efficiency, while TF‐based adopted local guarantee accuracy. Furthermore, data corruption taken into consideration...

Some innovative works have been done to probabilistic power flow (PPF) analysis for hybrid HVAC and LCC-VSC HVDC system in this paper. Firstly, a unified method considering precise model of converters is proposed solve general deterministic (DPF) calculation including LCC (Line Current Converter) VSC (Voltage Source Converter), the pure VSC-MTDC Converter-Multiple Terminal Direct Current) system. Meanwhile, with large amount renewable energy sources integrated main grid through DC grids, it...

For consequent‐pole permanent magnet (CPM) machines, the (PM)‐arc ratio and split have great influence on output torque. This study establishes general relationship of torque/torque density with PM‐arc considering effects slot/pole number combinations tooth‐tips. In addition, both optimal for maximising torque are analytically derived confirmed by finite‐element analysis. It is found that determined airgap length to PM thickness. demonstrated depends average flux below one slot maximum in...

Abstract Extreme events are typically low‐probability occurrences with limited historical data and a high degree of unpredictability. The inherent conflict between the dispatch rationality in extreme conventional scenarios, makes it hard for traditional methods to consider both performances. This article introduces rapid quantification method evaluating uncertainty scenarios within integrated energy systems. enhances speed precision predictions by establishing direct correlation...

In this paper, two flux-switching permanent-magnet (FSPM) wind power generators with 9- and 12-phase windings are designed comparatively analyzed. Both under the rated specifications of 10 kW output 220 V phase voltage at 500 r/min. The static characteristics generating performances including voltage, power, efficiency variable load/speed conditions predicted by finite-element analysis validated experimental tests based on FSPM prototypes. It shows that 24-stator-slot/22-rotor-pole generator...

Dynamic VAR compensation (DVC) is gaining increasing attentions with growing construction of high‐voltage DC systems and renewable power plants in modern system. This study proposes a novel zoning‐based heuristic planning method to reduce the sites capacity DVC installation. Clustering algorithm based on buses’ dynamic behaviour correlation voltage control ability developed partition system into several zones. Then, candidate are determined by zones, which narrow searching space avoid...

Thermal stress is one of the main sources micro-electro-mechanical systems (MEMS) devices error. The Wheatstone bridge sensing structure a typical piezoresistive MEMS pressure sensor. In this study, thermal induced by potting adhesive in sensor was investigated experiments, calculated analytics and analyzed simulations. An experiment system used to test at different air pressures temperatures. error becomes greater with decrease pressure. A set novel formulas were proposed calculate...

loT devices have evolved from providing remote connection to being an essential component of the Metaverse. The integration and vision technologies has been incubating emerging applications such as vision-enhanced device tracking education/medicine/maintenance. Despite exciting vision, practical challenges include coordinate transformation, angle estimation, target mapping, personal error. Instead proposing yet-another localization approach, we propose a novel system, called VisBLE. VisBLE...

Design rules of multiple multiphase winding configurations are investigated from the perspective phase shift between adjacent sets in flux-switching permanent magnet (FSPM) machines. The relations torque/rectified voltage and for any topology theoretically derived, directly showing influence on harmonic components. It can be learned that optimal lowest torque ripple dc oscillation depends types. Symmetrical is not always appropriate occasion. To verify analytical results, static...

When thermopile sensor is used for safety monitoring of equipment in industrial environments, particularly measuring the thermal radiation information device, measured result this kind usually affected by ambient temperature due to its unique structure. An improved PSO-BP algorithm proposed compensation and correcting error condition system accuracy requirements reduced temperature. The core improve certainty initial weights thresholds that belonged BP neural network then train samples using...

The construction of a cyber physical system in power grid provides more potential control strategies for the grid. With rapid employment intelligent terminal equipment (e.g., smart meters and appliances) environment grid, abundant dynamic response information could be introduced to support secure stable system. Combining demand technology with traditional under-frequency load shedding (UFLS) scheme, new UFLS strategy-determining method involving appliances is put forward achieve coordinated...

Inertia is the measure of a power system’s ability to resist interference. The accurate estimation and prediction inertia are crucial for safe operation system. To obtain system provided by generators, this paper proposes an method considering influence frequency voltage characteristics on deficit during transients. Specifically, traditional swing equations-based model improved embedding linearized factors. On basis, snake optimization algorithm utilized identify constant due its strong...

Controlled islanding is an effective remedy to prevent large-area blackouts in a power system under critically unstable condition. When and where separate the are essential issues facing controlled islanding. In this paper, both tasks studied ensure higher time efficiency better post-splitting restoration effect. A transient stability assessment model based on extreme learning machine (ELM) trajectory fitting (TF) constructed determine start-up criterion for This works through prompt status...

Wind power has made rapid progress in the last few years. However, large-scale wind integration exerts negative influence to system. One of problems is that with current supplied by farm feeder, relay protection may be incorrect trip or miss trip. To study on positive sequence voltage polarized impedance relay, this paper gives a mathematical analysis relay's operation equation. And simulation turbine driven doubly fed induction generator accomplished PSCAD software verify analysis. The...

In this paper, a nine-phase flux-switching permanent magnet (FSPM) generator with 36 stator slots and 34 rotor poles is designed investigated for wind power generation systems. The proposed FSPM incorporates the high torque density of conventional three-phase machines fault tolerance multiphase machines, which especially suitable low speed applications, such as off-shore Both design parameters dimensions are optimized by evaluating corresponding electromagnetic performance obtained 2D...

Smart grid is a space-time multidimensional heterogeneous system integrated with cyber and power system. Because of event-driven discrete characteristic communication continuous system, it difficult to study hybrid In traditional researches, the model either was simplified run in one single platform, while accuracy practicability results can't be guaranteed. Therefore, co-simulation methods have become research hotspot which can used analyze complex dynamic performance This paper summarizes...

The goal of grid computing is to provide powerful abilities for those complicated tasks by using all available and free computational resources. After summarizing analyzing the current research achievements on resource management task scheduling, a QoS based structure allocation system 2-phase trust scheduling algorithm are presented in this paper. Because innovation they own, two algorithms benefit related researches greatly future.

In this paper, two flux-switching (FS) permanent-magnet (PM) (FSPM) wind power generators with 9- and 12-phase windings are designed comparatively analyzed. Both under the rated specifications of 10 kW output 220 V phase voltage at 500 rpm. The static characteristics generating performances including voltage, efficiency variable load/speed conditions predicted by finite-element (FE) analysis co-simulation method. FE results show that 24-stator-slot/22-rotor-pole FSPM generator exhibits...

In order to improve the modeling accuracy of interconnected large-scale photovoltaic power plant for electromechanical transient simulation, as well efficiency online security and stability analysis, an dynamic equivalent method was proposed. Take inverters aggregation object, calculate inverter clustering indexes cluster inverters, judge validity scheme through comparing system response with corresponding reference response. efficiency, parameter sensitivities curves were calculated data...