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74 results on '"HE Guixiong"'

1. An optimal scheduling method for IES considering virtual energy storage

Author

LIU Kaicheng, JIA Xiaoqiang, HE Guixiong, LI Jianbin, WANG Songcen, CHEN Hongyin, and WU Binbin

Subjects
ies, optimal scheduling, virtual energy storage, load flexibility, heating and cooling networks, Electrical engineering. Electronics. Nuclear engineering, TK1-9971
Abstract

Integrated energy systems （IES）， characterized by multi-energy complementarity， can enhance energy utilization and improve economic efficiency through effective scheduling. To achieve optimal scheduling for IES， the energy characteristics of heating and cooling system networks are considered， and an energy transport model for these systems is developed. By leveraging the flexibility of heating and cooling loads and the energy storage properties of the thermal networks’ working medium， a virtual energy storage model for the IES， integrating cooling， heating， and power systems， is developed. The heating and cooling systems are integrated as scheduling resources in the system’s optimal operation， with the objective of minimizing daily operational costs. An optimal scheduling method for IES， considering virtual energy storage， is proposed to achieve energy complementarity among the systems. Simulation results demonstrate that this method effectively balances the mismatch between output and load using the virtual energy storage system， responds proactively to time-of-use tariffs， reduces the peak-valley difference in purchased electricity， and significantly lowers the system’s economic costs.

Published
2024
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2. Identification and correction of abnormal line loss data in distribution networks based on segmented regions

Author

ZHANG Xinhe, HE Guixiong, LIANG Chen, MA Xiping, HE Zhenwu, and JIANG Fei

Subjects
line loss data, gn algorithm, lof, segmented region, kalman filter, Electrical engineering. Electronics. Nuclear engineering, TK1-9971
Abstract

Given the basic data anomalies and significant redundancy in line loss management within distribution networks， a technique for identifying and correcting abnormal line loss data based on segmented regions is proposed. In view of the redundancy of terminal data， a Kalman filter algorithm is employed to fuse terminal redundant data. Then， by traversing the distribution transformers of various line nodes in the distribution network and using local outlier factor （LOF） algorithm， the operational data are detected. Based on the topological relationship of the distribution networks， the Girvan-Newman （GN） algorithm is used to segment the abnormal nodes. By analyzing the neighboring node measurement data and the imbalance index of the segmented regions， the boundary of the regions is dynamically adjusted until the segmented regions meet the estimated observability conditions. The final division result of segmented regions is obtained， and abnormal data are solved using the measurement model， constraint model， and estimation model within the regions. Finally， an example of the 10 kV Shixin line and Shijin line in a province in Northwest China is used to validate the proposed method. The results demonstrate that the proposed method can identify and correct abnormal line loss data within distribution networks.

Published
2023
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3. Security Analysis of Regional Integrated Energy System Integrating Energy Storage

Author

Liu Kaicheng, Guo Ying, Wang Dan, Li Dezhi, and He Guixiong

Subjects
Environmental sciences, GE1-350
Abstract

Regional integrated energy system (RIES) can realize multi-energy conversion and complementation so as to improve energy efficiency, which also brings more security risks. The regional integrated energy system security region (RIESSR) is a security analysis method to describe the safe area for the operating points of RIES based on the N-1 guideline. As a controllable device, energy storage (ES) which is installed in the energy hub (EH) plays an important role in improving system security. Therefore, this paper establishes the model of practical security region of RIES integrating energy storage, and studies the impact of ES on total supply capability (TSC) and practical security boundary. Finally, a specific case is set to simulate and verify the model. By comparing the scenario with ES and the scenario without ES, it can be seen that the solution result of TSC increases and the security region extends across quadrant when the RIES is integrated with ES system. The capacity and location of the ES also impact on TSC and RIESSR.

Published
2021
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4. Research on Modeling Integrated Energy System and Coordinated Control Strategy Based on Hydrogen Production Using Hybrid Wind-Solar

Author

Yan, Huaguang, He, Guixiong, Liu, Kaicheng, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Tan, Kay Chen, Series Editor, Yang, Qingxin, editor, Dong, Xuzhu, editor, and Ma, Weiming, editor

Published
2023
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22. Research on Multi-Mode Operation and Coordinated Control Strategy of Grid-Connected Photovoltaic/Biogas/Energy-Storage System for Rural Ecological Breeding

Author

Zhang, Xinhe, He, Guixiong, Xiong, Junjie, He, Wei, and Xiao, Changlin

Subjects
Economics and Econometrics, Fuel Technology, Renewable Energy, Sustainability and the Environment, Energy Engineering and Power Technology
Abstract

Driven by the rural revitalization strategy and the carbon neutrality goals, the grid-connected photovoltaic/biogas/energy-storage (PV/biogas/ES) system is increasingly widely used in rural China. In this paper, a coordinated operation and control strategy of grid-connected PV/biogas/ES system for rural ecological breeding is proposed. Biogas, ES, and controllable load can adjust their operation state based on meeting constraint conditions to prevent overload from affecting the distribution transformer service life. The line voltage and load can adjust the ES control strategy. The peak shaving and valley filling can be realized through orderly charge/discharge control, in normal operation. Based on virtual synchronous generator (VSG) control, the ES has a certain frequency modulation ability. Meanwhile, overcharge, and over discharge can be avoided by detecting the state of charge (SOC) and adjusting the output power. When the line voltage drops suddenly, VSG can be switched to reactive power compensation mode. The battery energy storage system (BESS) and grid-connected inverter constitute a STATCOM/BESS, which can provide continuous reactive current to the grid to raise the line voltage and improve the system reliability. The effectiveness of the proposed strategy is verified by MATLAB/Simulink simulation.

Published
2022
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43. Research on temperature gradient model of SiC smelting furnace based on finite difference method

Author

Rui Zhao, Qin Jian, Haijing Wang, Yanmei Tang, Limin Jiang, and He Guixiong

Subjects
Wind power, business.industry, 020209 energy, Finite difference method, Mechanical engineering, 02 engineering and technology, Energy consumption, Power (physics), Temperature gradient, chemistry.chemical_compound, chemistry, Smelting, Heat transfer, 0202 electrical engineering, electronic engineering, information engineering, Silicon carbide, Environmental science, business
Abstract

In order to increase the levels of wind power accommodation, a pattern that high energy-loaded enterprises participate in the wind power accommodation is proposed. Firstly, this paper analyzes the electrical characteristics of the silicon carbide smelting furnace, and establishes the physical model of the furnace. Then, the finite-difference numerical analyses are used to analyze the variation of internal temperature field changing with power, and then the temperature gradient model is established. Finally, through the analysis on the temperature gradient model, we can obtain the relationship between the yield and the energy consumption in the silicon carbide smelting process. And it is the foundation of future research on the wind power accommodation potential model. The simulation results indicate the effectiveness of the proposed method.

Published
2016
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