State Grid Corporation of China (China)

Artificial Intelligence in the Assessment and Management of Spasticity: A Scoping Review

Spasticity is a prevalent and disabling consequence of upper motor neuron disorders, yet its assessment and management remains clinically challenging. Artificial intelligence (AI) may offer opportunities to enhance the objective assessment, prediction, and management of spasticit...

Risk-Adaptive Hierarchical Coordination for Supply Security in Renewable-Dominated Multi-Area Power Systems

Against the background of high penetration of renewable energy, multi-area power systems are exposed to risks arising from renewable generation variability, load forecast deviations, and multi-factor supply–demand disturbances under extreme conditions. To enhance power supply sec...

A Survey of Smart Contract Vulnerability Detection Based on Tree Representation

Smart contracts, characterized by automation, transparency, and decentralization, can establish efficient, secure, and reliable blockchain fund management and data processing mechanisms, playing a crucial supporting role in blockchain application scenarios. However, security issu...

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...

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...

Rapid Response Strategy for Transformer Gas Relay Fault Diagnosis Assisted by the IDBO-VMD-SVM Combined Model

Power transformers are core components of power grids, and their accurate fault diagnosis is critical for ensuring secure and stable grid operation. To address the limitations of conventional gas relays: inadequate extraction of dissolved gas analysis (DGA) features in transforme...

Frequency Security-Constrained Coordinated Optimal Configuration of Multi-Type Flexible Resources

With the large-scale integration of converter-based renewable energy sources replacing conventional units, the risks of power system supply–demand imbalance and post-contingency frequency instability have increased dramatically. Expanding the flexible resource portfolio and achie...

Multi-objective optimal dispatch of pumped storage in renewable-dominated hydro-wind-PV regional power systems

With the accelerated global energy transition, the installed capacity of wind and photovoltaic (PV) power continues to increase, making renewable-dominated power systems increasingly prevalent. However, the variability, intermittency, and limited controllability of wind and PV ge...

Oscillation-Stability-Constrained Coordinated Optimal Operation of Grid-Forming Energy Storage for Dynamic Support

The high penetration of grid-following (GFL) renewable energy integrated into weak grids may induce small-signal synchronous oscillations due to the coupling between phase-locked loop (PLL) dynamics and network impedance, thereby limiting renewable energy accommodation and the fl...

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-...

Seismic performance of bolted L‐shaped column‐base joints: Experimental study, numerical modeling, and design approach

Abstract L‐shaped columns have emerged as a practical load‐bearing structural scheme in industrial construction, as they effectively enhance space utilization within building layouts. Conventional cast‐in‐place L‐shaped column‐base joints often suffer from low construction effici...

High‐Performance Violet Phosphorene‐Based Device via Tellurium Doping‐Induced Contact Resistance Reduction

ABSTRACT Two‐dimensional materials have attracted much attention in various research fields. The phosphorene structures with various allotropes, another type of elemental 2D materials after graphene, have been demonstrated to have unique optoelectronic and photoelectronic propert...

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...

Coordinated Optimization Strategy for Load Aggregator in Distribution Network Considering Demand Response and Peak Regulation Incentive

With the increasing proportion of flexible resources such as distributed generation, energy storage and demand response in new power systems, load aggregators, as an important subject connecting users and the market, face the challenges of complex load types, large differences in...

Risk-Controlled Adaptive-Resolution Fault Diagnosis of Power Transformers Using Dissolved Gas Analysis: Lightweight Hierarchical Learning, Credibility, and Deployment Support

Dissolved gas analysis (DGA) is widely used for transformer condition assessment, but fixed-resolution classifiers may release overly specific fault labels when the available evidence is weak. This study develops a risk-controlled adaptive-resolution framework in which a lightwei...

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...

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...

Unrepeatered remote Φ-OTDR system with single-ended amplifier using hollow-core leading fiber

Phase-sensitive Optical Time Domain Reflectometry (Φ-OTDR) is widely used for monitoring critical infrastructure. However, conventional Φ-OTDR systems are limited by fiber nonlinear effects, which restrict the probe pulse energy and thus limit the sensing distance. To overcome th...

A short-term spatiotemporal load forecasting method for power systems based on an improved salp swarm algorithm

Traditional power system load forecasting methods frequently suffer from limited accuracy and stability when processing complex and volatile data, as they fail to simultaneously model spatial dependencies and effectively optimize model hyperparameters. To address these coupled ch...

Atomic-Scale Adjustment of Modified Natural Ester Molecules Related to Electrical and Physical Properties

Abstract Cooling efficiency and thermo-oxidative stability remain major challenges for vegetable-oil-based dielectric fluids. Here, soybean oil (SBO) was modified by transesterification with short-chain alcohols, and the effects of terminal alkyl-chain length were examined using...