Shanghai Electric (China)

Small-Signal Stability Enhancement of Grid-Side Converters for Permanent-Magnet Wind Turbines via Adaptive Leaky Impedance-Reshaping Compensation

Grid-following grid-side converters (GSCs) in permanent-magnet wind turbines may lose small-signal stability in weak grids because the synchronous reference frame phase-locked loop (SRF-PLL) interacts with grid impedance. For a regulated direct-current (dc) side, this paper propo...

Complementary Detection of Zero-Value InsulatorsBased on the Fusion of Infrared Images and ElectricField Intensity Features

To address the electrical safety hazards caused by missing zero-value insulators in high-voltage transmission lines, this study proposes a complementary detection method based on the fusion of infrared images and electric field intensity features. Infrared images of insulator str...

Transient Electric Field Evolution in a 220 kV Cable Joint Under Switching Overvoltage Considering Measured Dielectric Dispersion

Switching energization imposes wideband transient voltages on cable joints, whereas conventional simulations often use frequency-independent properties for semiconductive field-control components. This study develops a measurement-informed time-domain workflow for a 220 kV cable...

UAV Inspection and Collision-Aware Visual Perception Using Topology-Preserving RGB–Infrared Power-Line Graph Reconstruction

Accurate perception of overhead conductors is fundamental to autonomous unmanned aerial vehicle (UAV) inspection, trajectory planning, and collision avoidance in transmission corridors. Existing vision-based approaches predominantly formulate power-line detection as a pixel-wise...

Enhancing the Performance of Aqueous Lithium‐Ion Batteries via N‐Methylpyrrolidone Additive

ABSTRACT Aqueous lithium‐ion batteries (ALIBs) have garnered significant attention in the field of energy storage due to their inherent safety. However, their practical application is severely constrained by a narrow electrochemical window and electrolyte crystallization at low t...

Graphene-Like-Armored Nanosheet Assemblies toward Fast and Stable High-Mass-Loading Sodium Storage

Abstract Sodium-ion batteries represent promising energy storage devices, yet their deployment is severely hampered by sluggish ion-transport kinetics and unstable electrode–electrolyte interfacial chemistry that deteriorate rate capability and cycling lifespan, particularly unde...

A Study on the Identification of Partial Discharges in Typical Defects of Cross-Linked Polyethylene Cables Using the CNN-SE-RAP Algorithm

To address the reliance on manual interpretation and the limited discrimination capability of conventional methods for highly similar phase-resolved partial discharge (PRPD) patterns in cross-linked polyethylene (XLPE) cables, a convolutional neural network incorporating squeeze-...

Exponential strain energy density-based dynamic failure criterion for jacket offshore wind turbines under extreme seismic loading

Jacket offshore wind turbines (OWTs) are increasingly deployed in seismically active regions. However, existing failure criteria for OWTs under seismic loading rely on empirical displacement or stress thresholds that lack theoretical justification. To address this, the present st...

A study on the impact of urban artificial intelligence development on carbon emissions from electricity consumption

The advancement of artificial intelligence in conjunction with the “dual carbon” goals is a critical aspect of the current green transition of cities. The carbon reduction effects of this approach in the electricity consumption sector require a thorough evaluation. Using panel da...

Resilient load frequency control of power systems with energy storage under DoS attacks

With the growing reliance of power systems on communication networks, denial-of-service attacks on communication links induce link congestion, which poses a severe threat to system frequency stability. Therefore, this paper addresses the load frequency control problem for power s...

A Stage-Coupled Field–Circuit Simulation Method for GIS Multiple Restrikes Considering Time-Varying Arc Resistance

Multiple restrikes during gas-insulated switchgear (GIS) disconnector operations generate very fast transient overvoltage and associated electromagnetic disturbance. Conventional circuit-based simulations can reproduce the temporal sequence of multiple restrikes but cannot direct...

Equity-Aware Planning of Urban Ultra-Fast Electric Vehicle Charging Infrastructure with Spatial Graph Learning and Grid Constraints

Urban ultra-fast-charging planning must connect equitable user service with physically deliverable charging power. This study formulates a heterogeneous graph linking demand zones, roads, candidate stations, and distribution buses, together with an infrastructure model for statio...

A battery life prediction method based on graph neural network assisted by deep reinforcement learning

With the wide utilization of new energy batteries, the accurate prediction of battery life has become an urgent technical issue that needs to be addressed. Studies have developed battery life prediction models based on correlation analysis for feature extraction. This study intro...

Knowledge Distillation TabPFN for Predicting Dismantled Material Weight of Retired Oil-Immersed Transformers

The dismantled components of retired oil-immersed power transformers, particularly the windings and core, have high recycling economic value. However, accurately estimating their weight based solely on nameplate information prior to disassembly remains a key challenge for recycli...

Energy management control of grid-tied PV-battery system based on intelligent proportional allocation

Purpose Most existing grid-tied PV-battery systems rely on static charge-discharge schedules, typically involving daytime battery charging and nighttime discharging, which lead to inefficient energy storage utilization and reduced overall economic performance. Traditional energy...

Hydraulically Coupled Compressed-Air Energy Storage Systems: A Review of Configurations and Performance with Emphasis on PHCAES

Growing wind and photovoltaic generation increases the demand for large-scale, long-duration energy storage. Pumped hydro compressed-air energy storage (PHCAES) stores and releases energy through pressure transfer between water and compressed air, using air pressure to provide an...

Fixed-time adaptive sliding mode control for nonlinear systems based on rapid Kolmogorov-Arnold network

This paper proposes a fixed-time adaptive sliding mode control method for second-order uncertain nonlinear systems. The proposed controller combines fixed-time nonsingular terminal sliding mode control (FTNSTSMC) with a rapid Kolmogorov-Arnold network (RKAN). Unlike finite-time c...

Weather-guided decomposition and hard-routing expert modeling for short-term photovoltaic power forecasting

Solar energy has become a pivotal renewable resource in modern power systems; however, the stochastic and weather-dependent variability of photovoltaic (PV) generation continues to challenge accurate power forecasting and grid operation. This study proposes a weather-adaptive for...

A hypergraph-based dispatchable potential forecasting method for virtual power plants under price incentives

Accurate prediction of the dispatchable potential of a virtual power plant is fundamental to its participation in electricity markets and ancillary grid services. Existing studies often overlook higher-order interactions among heterogeneous distributed resources and their coupled...

KELM transmission line fault location method incorporating uncertainty estimation

Abstract With the widespread application of flexible direct current transmission (MMC-HVDC) in the interconnection of large power grids and the consumption of new energy, the accuracy, reliability, and response speed of transmission line fault location are of crucial importance f...