The transition of the USB Power Delivery (USB-PD) standard from fixed 5–20 V profiles to the dynamic extended power range (EPR) of up to 48 V and 240 W has redefined the constraints of isolated AC–DC conversion for high-density adapters a...
With the increasing penetration of renewable energy and the growing use of power electronic interfaces, the operating characteristics of modern power systems are changing significantly [...]
Recovering the low-temperature heat released during compressed air energy storage (CAES) charging for industrial steam generation requires a heat pump that can provide both the required steam temperature and sufficient heating capacity. This study ap...
This study investigates proppant flowback using field data, numerical simulations, and machine learning for deep coalbed methane (CBM) wells in the Linxing–Shenfu Block, Ordos Basin. Field data show that most proppant production occurs during t...
Economical operation of cascade pumping stations requires temporal feedback and spatial coordination, whereas a single day-ahead schedule cannot correct deviations arising during execution. This study develops a distributed multi-time-scale superviso...
Hydrogen-enriched natural gas can reduce direct carbon emissions from industrial heat-treatment furnaces, but its effect should be evaluated at the required process temperature rather than only at constant burner input. This study investigates 0&ndas...
The methodological innovation of this study is a phase-domain separation-and-recombination framework that maps harmonic voltage to prospective flux, maps controlled quasi-DC winding current to magnetic operating-point displacement, and then resolves...
To improve the low-temperature heating performance of electric-vehicle CO2 heat pumps, their system configurations and control strategies have become increasingly complex. This has made coordinated regulation among multiple components more difficult...
Earth-to-air heat exchangers (EAHEs) use ground thermal inertia to precondition ventilation air, but their representation in whole-building simulation is limited by the simplified geometry and internally defined heat-transfer formulation of the nativ...
To address the energy supply–demand imbalance caused by the limited operating modes of stand-alone combined cooling, heating, and power (CCHP) microgrids, this study investigates a geographically integrated energy framework of two interconnecte...
To address the severe physical wear of actual circuit breakers, limited logic verification under complex operating conditions, and maintenance scheduling conflicts during operational testing in power systems, this paper presents a portable auxiliary...
Extreme events threaten distribution network security. When remote-controlled switches (RCSs) lose remote operability during extreme events while remaining manually operable, faulted areas may no longer be isolated through remote switching alone. Thi...
In cold-region industrial parks, prolonged heating seasons and intensive hot water demands trigger severe temporal mismatches between stochastic renewable generation and rigid thermal requirements. To address this, a multidimensional synergistic opti...
Accurate solar irradiance forecasting is a key prerequisite for reliable solar photovoltaic (PV) operation, effective energy management, and system optimization. Conventional forecasting methods, such as historical averaging, persistence models, and...
Unlike single-converter grid-connected systems and multi-converter grid-forming (GFM) systems operating in islanded mode, grid-connected multi-converter systems comprising parallel grid-following (GFL) and GFM converters exhibit more complex internal...
Optimising grid-connected photovoltaic (PV)-battery renewable energy systems involves balancing economic performance, renewable energy use, and grid reliance. While HOMER Grid offers dependable optimisation, running multiple simulations for benchmark...
The increasing replacement of synchronous generators (SGs) by grid-following (GFL) and grid-forming (GFM) inverters is reshaping the dynamic bus characteristics of modern power systems. This transition makes a fixed ideal-voltage-source representatio...
Power mini-grids are being transformed from locally automated electrical systems into cyber-physical ecosystems in which heterogeneous distributed energy resources, storage, converters, flexible demand and uncertain external conditions must be coordi...
The major challenge in photovoltaic (PV) maximum power point tracking (MPPT) systems is finding a balance between the high performance of artificial intelligence techniques and the interpretability and reliability of physics-based approaches. This pa...
When a virtual power plant (VPP) participates in energy and reserve markets, day-ahead bids, reserve commitments, and real-time delivery share the same internal resource constraints, while aggregate models cannot readily trace internal responsibility...
Accurate detection of early minor faults in electric vehicle traction batteries is important for preventing thermal runaway under complex operating conditions. Aging-related capacity degradation and measurement noise can mask the weak voltage distort...
In cascaded H-bridge (CHB) high-voltage drives using unipolar frequency-doubling carrier phase-shifted sinusoidal pulse width modulation (CPS-SPWM), unequal carrier phase offsets weaken switching-harmonic cancelation. This paper proposes a carrier-sy...
To improve post-fault service restoration and network reconfiguration in distribution networks with distributed generation, this paper proposes a fault recovery and reconfiguration method based on a membrane computing multi-objective optimization alg...
This paper develops distributed Backstepping Integral Terminal Sliding Mode (BITSM) control for consensus speed tracking of networked Permanent Magnet Synchronous Motor (PMSM) drives under bounded matched uncertainty. A leader–follower speed lo...
Underground hydrogen storage (UHS) is poised to emerge as a pivotal technology for large-scale and seasonal energy storage in future low-carbon energy systems. Nevertheless, ensuring its safe deployment necessitates implementation of monitoring strat...
Cellular substrates placed beneath the piezoceramic are increasingly used to raise the output of vibration energy harvesters, yet the enhancement is commonly attributed to auxeticity, and the durability penalty of perforation is seldom quantified. Th...
In the present study, using advanced methodologies together with analytical and experimental equipment, the ignition and combustion characteristics were determined for coal-based fuels, sorbent derived from this coal, and oil-impregnated sorbent (33....
This study examines whether a structure-preserving representation of the joint Open-High-Low-Close (OHLC) vector provides coherent forecasts for China’s INE crude-oil futures and how seven benchmark models compare within that representation. Th...
Low-switching-frequency operation is essential for high-power modular multilevel converters (MMCs), but it makes the simultaneous achievement of low harmonics, fast transient response, and reliable internal control more difficult. Conventional lookup...
This paper focuses on deriving power-system linear models directly from collected PMU data with the aim of feeding a wide-area damping controller (WADC) architecture. To this end, a data-assisted dominant modal realization in state space is derived f...
Import-dependent megacities must decarbonize while accommodating distributed photovoltaics (PV) under constrained local-generation and interchange boundaries. This study develops a full-year, hourly, 48 h rolling mixed-integer linear programming mode...
Due to varying development histories of reservoirs with different physical properties in Block X, Huabei Oilfield, the remaining oil distribution and microscopic mobilization limits after waterflooding remain unclear, and the subsequent CO2 transitio...
Residential load profiling can support the design of differentiated demand-side management, but clustering methods are sensitive to representation quality and initialization. We developed a profiling workflow that combines a convolutional attention v...
The ±500 kV valve halls of wind farm offshore platforms are integrated through a high-voltage direct current (HVDC) transmission system and constructed in deep-sea conditions, making the design of net air clearance distances particularly criti...
The current study combines solar photovoltaic (PV) power, energy storage batteries and wind power to propose a novel and effective method for energy management and optimisation of hybrid renewable energy systems. Optimising the management and coordin...
Reliable review of preliminary design estimates is important for cost control in power grid substation projects, yet fixed thresholds have limited ability to reflect project-specific engineering conditions. This study develops a multidimensional cost...
This study assessed how the selected seasonal test period, training-window strategy, and hyperparameter selection were associated with differences in XGBoost day-ahead forecast accuracy and interpretation for approximately 300 G11-tariff househo...
Existing photovoltaic (PV) power forecasting methods face challenges in simultaneously capturing multi-scale temporal characteristics, spatial dependencies among PV plants, long-term temporal correlations, and output uncertainty. To address these iss...
Energy-efficiency labeling may yield lower savings than engineering estimates suggest because market uptake is constrained by consumers and enterprises. This study aims to quantify this gap for dishwasher energy-efficiency labeling in China, identify...
Modern wind turbines require effective control strategies to maximize energy capture under partial-load conditions while maintaining generator-speed and power regulation above the rated wind speed. This study proposes and applies a controlled and rep...
Operational management of hard-to-recover (HTR) reservoirs requires modelling tools that can be repeatedly updated and recalculated as new field data become available. This study presents a reduced-order framework that combines a source-based boundar...
Large-scale underground hydrogen storage (UHS) in saline aquifers requires preliminary screening methods that consider both subsurface suitability and the spatial context of the energy system. This study develops an integrated geographic information...
This paper evaluates the operation of battery energy storage systems under grid-following and grid-forming representations in a photovoltaic-rich 33-bus radial distribution network. The study combines a 24-h scheduling model, an AC radial power flow,...
Traditional ports adopt separate scheduling modes for logistics and multi-energy subsystems without deep bidirectional coupling, which leads to low demand response (DR) participation, severe mismatch between the logistics power demand and multi-energ...
Renewable energy transition management increasingly depends on the integration of digital technologies, organizational capabilities, and innovative forms of value creation. This study examines how digital transformation, organizational learning, and...
Cities worldwide are confronting major challenges associated with rapid urbanization, climate change, resource constraints, aging infrastructure, and the transition toward decarbonized, sustainable economies [...]
Ammonia is a promising carbon-free energy carrier for decarbonizing existing fossil fuel power plants. However, its economic viability and life-cycle environmental performance remain uncertain across different power generation technologies. This stud...
Grid-impact studies treat battery electric vehicles as loads, and ask when network capacity will be exhausted. This paper reverses the question: how much of the fleet must operate bidirectionally, and with what probability will an achievable particip...
Accurate forecasting of energy consumption, renewable power output and utility expenditure is essential for sustainable planning of residential buildings and improving smart grid integration. This study presents several techniques such as random fore...
Spacer wires are widely employed in lead-cooled fast reactor fuel assemblies to maintain rod positioning. The helical spacer structure induces rotational flow and enhances transverse mixing between subchannels, thereby significantly influencing therm...
