Zongxiang Lu

An hourly climate projection and renewable energy generation dataset for power system modeling in China

Ruijie Chen, Benjamin F. Hobbs, Zongxiang Lu, Yury Dvorkin et autres

As renewable energy deployment expands, power systems are increasingly sensitive to climate variability. Global Climate Models (GCMs) are commonly used to assess climate change impacts on future power systems. However, GCM outputs are typically only available at daily or coarser temporal resolutions, …

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Frequency-fixed grid-forming control for less-dynamic and safer renewable power systems

Yong Min, Zhenyu Lei, Lei Chen, Fei Xu et autres

Grid-forming (GFM) control is a key technology for ensuring the safe and stable operation of renewable power systems dominated by converter-interfaced generation (CIG), including wind power, photovoltaic, and battery energy storage. In this paper, we challenge the traditional approach of emulating a …

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Fundamental Tradeoff of Bistatic ISAC Under Gaussian Fading Channels at Finite Blocklength

Xiao Shen, Zongxiang Lu, Na Zhao, Hanying Zhao et autres

The paradigm of integrated sensing and communication (ISAC) is envisioned as a key enabler for the evolution of 6G, leveraging inherent similarities of dual functions in hardware architectures and signal processing to sense the environment and send messages via a shared waveform. …

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Coordinated Optimization of Multiple Reactive Power Sources for Transient Overvoltage Suppression for New Energy Sending-Out System

Qinglei Zhang, Lei Luo, Xiaoping Wang, D.H. Zhang et autres

With the implementation of China’s “dual carbon” strategy, the installed capacity of new energy has grown rapidly. Wind power and photovoltaic power have accounted for more than 40%, but the integration of power electronic apparatus into the grid has resulted in the …

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Voltage Strength Assessment of Sending/Receiving Systems with a High Proportion of New Energy and HVDC

Biyang Wang, Yu Kou, D.H. Zhang, Qinglei Zhang et autres

The significant increase in renewable energy sources and HVDC transmission has resulted in a substantial reduction in power system stability, thereby giving rise to a growing concern regarding the safety and stability of the voltage and frequency of DC power systems. A …

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Design of Typical Insulation Structure for High‐Voltage Converter Transformer Bushing

Yongsheng He, Shiling Zhang, Sidun Fang, Zongxiang Lu et autres

This paper first analyzes the high‐altitude operating environment of the ±500 kV converter transformer bushing, then based on this, further research is developed to quantitatively design the insulation structure inside the core of the converter sleeve. After experimental verification, the design scheme …

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Bi-level coordinated operation strategy of an active distribution system with load aggregators

Lingling Wang, Zongxiang Lu

• A bi-level coordinated optimization model for DSO with multiple LAs is constructed. • The bi-level model is transformed into mathematical programming with equilibrium constraints. • DSO can guide LA’s electricity consumption behavior by setting reasonable prices. Load aggregator (LA) is an …

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A Reduced-Order Algorithm for a Digital Twin Model of Ultra-High-Voltage Valve-Side Bushing Considering Spatio-Temporal Non-Uniformity

Yongsheng He, Yida Li, Xiangcheng Li, Yanan Yuan et autres

The valve-side bushing of a converter transformer is a critical component in ultra-high-voltage direct current (UHVDC) systems, making its monitoring through digital twin technology highly significant. However, the complex structure and spatio-temporal nonlinearity of the bushing result in a large computational demand …

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Commercial model of the electricity-carbon market incorporating flexible resources

Weiting Xu, Xuna Liu, Keteng Jiang, Xinting Yang et autres

Under the “Dual Carbon” goals, the coupling of power and carbon markets has become a critical driver for energy decarbonization. Flexible resources, including energy storage, distributed energy, and demand response, play vital roles in enhancing energy system efficiency, optimizing market resource allocation, …

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Flexible region aggregation of adjustable loads via an adaptive convex hull strategy

Yisha Lin, Zongxiang Lu, Ying Qiao, R. Chen

Increasing interest has been directed toward the potential of heterogeneous flexible loads to mitigate the challenges associated with the increasing variability and uncertainty of renewable generation. Evaluating the aggregated flexible region of load clusters managed by load aggregators is the crucial basis …

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Analysis and Modeling of the Nonlinear Characteristics of the Insulation Medium in Capacitor Cores and the Electric Thermal Coupling Mechanism of the Main Insulation Structure of High-Voltage Bushings

Shiling Zhang, Zongxiang Lu, Sidun Fang, Huasen Liu

The valve side bushing of ultra-high voltage converter transformers is used in multiple fields. Due to the temperature gradient distribution inside the capacitor core, classical theoretical formulas cannot quantitatively describe the influence of the nonlinear characteristics of the insulation material in the …

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Moderately Extreme Weather Contributions to Power Supply Inadequacy: Identification Using Rapid Loss-of-Load Estimation

Ruijie Chen, Benjamin F. Hobbs, Zongxiang Lu, Ying Qiao

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