North China Electric Power University

Adaptive smooth-switching control strategy for soft open points based on dynamic short-circuit ratio identification

Purpose This paper aims to address stability issues from dynamic short-circuit ratio (SCR) variations caused by high distributed energy penetration. The limitations of soft open points using single control strategies, which are challenged by varying grid strengths, are overcome a...

Diagnosis of abnormal voltage in individual cells and fault trend prediction in energy storage power stations

Abstract During the operation of energy storage power stations, individual cells are prone to voltage inconsistency and abnormal voltage fluctuations due to manufacturing variations, inconsistent aging degrees, and changes in operating conditions. To address this issue, this stud...

Investigation of the dynamic stall characteristics for floating offshore wind turbine during pitch and surge motions

Platform motions periodically alter the relative inflow velocity and blade angle of attack of floating offshore wind turbines (FOWT), making the accurate prediction of dynamic stall essential for assessing aerodynamic loads and power fluctuations. This study systematically evalua...

Llm-assisted physics-guided spatiotemporal graph learning for power meteorological disaster evolution

Extreme meteorological events—such as winter cold waves, ice accretion, and typhoons—are increasingly becoming primary triggers that threaten the safe and stable operation of power systems. Their disaster-causing processes exhibit strong spatial correlations and multi-stage tempo...

Tuning Reaction Pathways by Controlling Atomic Assembly on Oxide Clusters

ABSTRACT Precisely controlling the assembly of atomic sites on oxide clusters (< 1 nm) represents an expanded yet challenging strategy for tuning catalytic performance. Here, we construct two well‐defined model catalysts, single‐atomic Pt on CuO x clusters (Pt 1 ‐CuO x /CN) an...

Spatial Correlation Network Assessment of the New Quality Productive Forces Among 283 Chinese Cities: Network Characteristics and Structural Resilience Features

Cities, being elementary concentrations of socio-economic activities and resource-environmental pressures, confront significant challenges in promoting new quality productive force (NQPF) development because technology, resource, and information conditions may be spatially associ...

Reversible Local CoordinationRelaxation of Lattice-EmbeddedRh Single Sites Enables Efficient and Durable Propene Hydroformylation

Abstract Efficient atomically dispersed Rh catalysts for propene hydroformylation require active sites that combine coordination flexibility during turnover with resistance to leaching and aggregation. Here we report Rh1@ZnO, in which Rh single sites are incorporated into cation...

Leveraging Machine Learning for Accelerated Electrode–Electrolyte Interface Design in Rechargeable Li‐Based Batteries

Due to their high specific energy, lithium-metal batteries (LMBs) are widely regarded as the promising next-generation energy storage devices. Nevertheless, their practical applications are plagued by the challenges of irregular deposition and dissolution, coupled with the high c...

Experimental and Numerical Study on the Flexural Performance of Prefabricated RC Beams with UHPC–Cogging–Grouted Sleeve Composite Joints

This study investigates the flexural performance of prefabricated reinforced concrete (RC) beams with a novel UHPC–cogging–grouted sleeve composite joint. Five beam specimens—one cast-in-place reference and four prefabricated examples—were tested under four-point bending. The key...

Quantifying the Flexibility of Centralized Hot Water Systems at a University Campus by Considering Demand Response Participation Uncertainty

Centralized hot water systems in university dormitories can provide significant energy flexibility through demand response (DR). Thus far, however, existing studies have mainly focused on system-level optimization and have failed to provide a quantitative framework that accounts...

Building a Physics-Aware AI Ecosystem for Solid-State Hydrogen Storage Materials

Abstract Hydrogen storage remains a central bottleneck for scalable hydrogen energy systems due to the multiscale and coupled nature of the thermodynamics, kinetics, and microstructural evolution of hydrogen storage materials (HSMs). Although artificial intelligence (AI) has acce...

Risk-Window Planning of HVDC-Connected Renewable Energy Bases with a Chronological-Replay-Protected Decision Gate

Planning HVDC-connected renewable energy bases is constrained by the cost of full 8760 h multi-scenario replay and the risk that temporal reduction obscures coupled renewable scarcity, ramping stress, storage depletion, and delivery recovery. This study develops an auditable and...

Analysis of the strong vertices of hadronic molecules DK, $$D^*K$$, $$DK^*$$ and their bottom analogs

Abstract In this work, we analyze the strong vertices of hadronic molecules DK , $$D^*K$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msup> <mml:mi>D</mml:mi> <mml:mo>∗</mml:mo> </mml:msup> <mml:mi>K</mml:mi> </mml:mrow> </mml:math> , $$DK^*$$ <mml:m...

An Enhanced Fault-Tolerant Scheme for Arm-Multiplexing Modular Multilevel Converters

The arm-multiplexing modular multilevel converter (AM-MMC) is a new compact MMC topology that is especially promising for offshore high-voltage direct current transmission systems. However, the reliable operation of AM-MMCs suffers from submodule (SM) faults. The fault-tolerant s...

Reactive PLD Guides the Transformation to Noncrystalline C‐Ga‐Se‐Cl Films with a Halogen‐Defined Interface for Enhanced Luminescence

ABSTRACT Pulsed laser deposition is known for copying the composition of a target into a thin film. Adding a reactive gas can change the growth process, but the chemistry usually stays close to the target. Using a carbon‑rich environment and a pulsed chlorine source from polyviny...

HydrophobicDilauroyl Peroxide Improves the ElectricalPerformance and Stability of PTAA in both n-i-p andp-i-n Perovskite Solar Cells

Abstract Stability degradation plagues both regular n-i-p and inverted p-i-n perovskite solar cells (PSCs), with the organic hole transport layer (HTL) constituting a key restricting factor. Poly(triarylamine) (PTAA) possesses intrinsic polymer characteristics and excellent therm...

Hydropower Scheduling of Cascaded Reservoirs Using a Hybrid Gurobi–PSO Algorithm

Abstract Optimal operation of short-term power generation solutions for cascade hydropower stations is an important part of current reservoir operation and management. Existing population intelligence optimization algorithms exhibit limitations including susceptibility to the ini...

An Optimized CatBoost Model for Spatiotemporal Prediction of hmF2 in High-Latitude Regions

The peak height of the F2 layer (hmF2) is a key parameter describing the vertical structure of the ionosphere. It is important for high-frequency radio communication planning and space-weather background assessment, particularly at high latitudes. To improve long-term hmF2 predic...