A5057139947- Power System Optimization and Stability
- Fluid Dynamics and Heat Transfer
- Ultrasound and Cavitation Phenomena
- Computational Fluid Dynamics and Aerodynamics
- Smart Grid Energy Management
- Power Systems Fault Detection
- HVDC Systems and Fault Protection
- Privacy-Preserving Technologies in Data
- Energy Load and Power Forecasting
- Power Quality and Harmonics
- Laser-induced spectroscopy and plasma
- Combustion and Detonation Processes
- Microgrid Control and Optimization
- Petri Nets in System Modeling
- Cryptography and Data Security
- Metamaterials and Metasurfaces Applications
- Advanced Algorithms and Applications
- Gas Dynamics and Kinetic Theory
- Smart Grid Security and Resilience
- Video Surveillance and Tracking Methods
- Topic Modeling
- Advanced Vision and Imaging
- Vehicle Dynamics and Control Systems
- Tribology and Lubrication Engineering
- Aerodynamics and Fluid Dynamics Research
RELX Group (United Kingdom)
2024
Nanchang Hangkong University
2024
Shanghai Electric (China)
2024
RELX Group (United States)
2024
China University of Petroleum, East China
2023
University of Chinese Academy of Social Sciences
2023
South China University of Technology
2023
Chinese Academy of Social Sciences
2023
Shandong Institute of Business and Technology
2018-2023
National Grid (United Kingdom)
2023
The conventional Under Frequency Load Shedding (UFLS) scheme could result in unacceptably low frequency nadirs or overshedding power systems with volatile inertia. This paper proposes a novel UFLS for modern whose inertia may vary wide range due to high penetration of renewable energy sources (RESs). proposed estimates the rate change (RoCoF) center (CoI), and consequently, loss generation (LoG) size, using local measurements only. An innovative inflection point detector technique is...
Abstract All-dielectric metasurfaces have attracted attention for highly efficient visible light manipulation. So far, however, they are mostly passive devices, while those allowing dynamic control remain a challenge. A tuning mechanism is immersing the metasurface in birefringent liquid crystal (LC), whose refractive index can be electrically controlled. Here, an all-dielectric tunable demonstrated based on this concept, operating at frequencies and TiO 2 nanodisks embedded thin LC layer....
This letter proposes a novel technique for estimating the rate of change frequency (RoCoF) center inertia (CoI) in power systems. To offer holistic picture system's response, proposed requires local at point measurement, only. enables estimation active deficit following loss generation (LoG) event, thus facilitating fast and effective remedial action. Extensive simulations conducted verify effectiveness applicability technique.
This paper presents the design and validation of a Wide Area Monitoring Control (WAMC) system for Fast Frequency Response (FFR) to address challenges associated with reduced non-uniformly distributed inertia in power systems. The WAMC system, designed Great Britain, is termed "Enhanced Capability (EFCC)." It uses real time measurements from Phasor Measurement Units (PMUs) monitor state order rapidly detect frequency disturbances evaluate magnitude imbalances. impact on different parts...
Dissolved oxygen is an important water quality indicator that affects the health of aquatic products in aquaculture, and its monitoring prediction are great significance. To improve accuracy dissolved series, a hybrid model based on variational mode decomposition (VMD) deep belief network (DBN) optimized by improved slime mould algorithm (SMA) proposed this paper. First, VMD used to decompose nonlinear time series into several relatively stable intrinsic function (IMF) subsequences with...
The stable and efficient management dispatching of power system depend on the accurate short term load forecasting following few minutes to a week. With rapid development Internet Things, number network edge devices data volume has increased exponentially. However, traditional centralized method cannot accurately grasp variation patterns all area, which entails storage pressure delays calculation transmission. In addition, potential security risk for its transmitting storing in center....
Short-circuit faults close to either end of a transmission line, are normally cleared instantaneously by the distance relay at that and after hundreds milliseconds, i.e., in Zone 2 operating time, opposite line. This sequential tripping can be accelerated on condition reliable communication link is available for signaling between two line ends. paper proposes novel non-communication method providing high-speed relaying over entire length protected The inputs parameters local voltage current...
A multi-line structured light measurement method that combines a single-line and three-line laser, in which precision sliding rails displacement equipment are not required, is proposed this paper. During the measurement, projects onto surface of an object remains fixed. The laser moved intersects with to form three intersection points. plane can be solved using camera coordinates points, thus completing real-time calibration scanned plane. at any angle determine overall complete...
Abstract Photovoltaic power generation, which is an important component of clean energy, has been widely used around the world. However, predictability photovoltaic generation systems always a challenge because it affected by meteorological conditions and other external factors. Therefore, accurate output prediction crucial for stability reliability system. This work aims to use two advanced machine learning technologies, supporting vector (SVM), autoencoder (Autoencoder), improve...
SUMMARY A general and robust subgrid closure model for two‐material cells is proposed. The conservative quantities of the entire cell are apportioned between two materials, then, pressure velocity fully or partially equilibrated by modeling wave interactions. An unconditionally stable entropy‐satisfying solution processes has been successfully found. valid arbitrary level relaxation. numerically designed with care materials computationally efficient without recourse to iterations subcycling...
Accurate and efficient human detection has become an important area for research in computer vision. In order to solve problems the past algorithms such as features with fixed sizes, positions number, based on united Hogs algorithm was proposed. This can dynamically generate closer body contours. Basically maintaining speed, accuracy improved by our algorithm. We demonstrate that comparing using haar, traditional hogs variable-size blocks, is better both of rate false positive rate.
Quantum dots (QDs) have received considerable attention in information displays owing to their high quantum yield, colour purity and low-cost fabrication. However, light emission for ultra-thin QD films with low mass percentage of QDs still need be improved because the blue can directly transmit films, leading insufficient energy excite QDs. In this study, we report based on a poly(zinc methacrylate) coating alloyed green-emitting CdZnSeS/ZnS (QDs@PZnMA) together refractive-index BaTiO3...
In future power systems, highly increased renewable integration is expected to meet global decarbonisation targets. The risks and uncertainties brought about by will challenge system stability. This study analyses the impact of level energy sources on transient stability out-of-step tripping (OST) protection. To this end, performance OST protection assessed in terms ability prevent instability under different contingencies. A modified two-area test Great Britain (GB) 29-zone integrated with...
For high speed flows with a short duration of test time, one has to construct an optical system without having image it, which can be obtained only after running experiment. In order solve this problem, we propose technique simulate the shadowgraph method together flow field by computer in paper, so that optimize on before technique, experiment is represented solution given computational fluid dynamics (CFD), and tracing rays through numerical as well setup. The effects components, such...
Abstract A new PLIC‐VOF method is proposed to track deformable particles, such as bubbles and liquid droplets, that can be smaller than the grid spacing. The idea replace surface normal (SN) calculation used in PLIC, by SN vector obtained from partial differential equations are solved together with advection algorithm. for evolution of derived, examined using first‐order second‐order upwind schemes. Since defined every cell, generally improves accuracy at low resolution. It found a zero...
The construction of intelligent informatization the power grid has prompted to accumulate a large amount text data, and deeply mining valuable information is significant for development industry. A number basic production process are recorded in defect equipment. However, repeated expression, unclear logical expression colloquialism will appear recording, which makes operation maintenance personnel unable accurately efficiently manage relationship between contents text. In this paper, we...
In this paper we propose a rotation angle-based perceptual optimization framework for dual-layer light field 3D displays. The whole flow can be divided into two phases; first, the moiré pattern is simulated based on angle and cost visual perception calculated second, further incorporated final of proposed compressive factorization display. way, moiré-aware with to generate display content our prototype. Experiments demonstrate that method provides promising in both mitigation definition enhancement
With the rapid development of information technology, estimation and prediction by big data have been used widely. However, problems exist in procedure. Due to flaws row data, there is still a gap truth. Inaccuracy risk assessment caused objective reasons subjective ones. The advanced assessments events lead discrimination. Moreover, regular competition has replaced malicious monopoly. In situation, harm owner inevitable. article, we tend list risks processing. Not only do fair market, but...