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2nd International Conference on Smart Electrical grid and Renewable Energy, SEGRE 2024

作者： Hu, Kangtao Tang, Niang Chen, Xiaojun Chen, Tao Xie, Liwei Guangdong Provincial Key Laboratory of New Technology for Smart Grid China Southern Power Grid Technology Co. Ltd. Guangdong Guangzhou510080 China Changsha University of Science and Technology Changsha China

ISBN: (纸本)9789819624553

In this paper, aiming to enhance the accuracy and dependability of fault identification in distribution network, a novel fault identification approach driven by power spectral density is proposed. First, the fault characteristics of current of lines are analyzed for a multi-branch distribution network, and according to the analysis result, it shows that the fault component characteristics of phase-current on a fault line are distinguished in comparison to those of a non-fault line, which can be utilized to fault lines and kinds identification. For the reduction of noise signal interference, the phase current is decomposed into several transient components by the improved local mean decomposition (ILMD) method. Then, the fault identification principle is established to achieve fault line and fault-phase identification via the high-frequency transient components’ entropy value of power spectral density. Simulations indicate the efficacy of the suggested strategy. The identification results are correct for various fault types and fault lines, and are less sensitive to the nonlinearity of high-impedance faults. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.

关键词： power distribution faults

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A novel enterprise electricity carbon emission accounting method based on power trading flow 3

A novel enterprise electricity carbon emission accounting me...

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3rd International Conference on Intelligent power and Systems, ICIPS 2023

作者： Wang, Jingliang Luo, Lijian Huang, Weifang Hu, Ke Yang, Qing Wang, Qingrui Xu, Zishuo Wang, Luyao Wu, Yelong Ling, Chen Guangzhou Power Exchange Center China Southern Power Grid Guangzhou China Southern Power Grid Carbon Asset Management Co. Ltd China Southern Power Grid Guangzhou China School of Energy and Power Engineering Huazhong University of Science and Technology Wuhan China China-EU Institute for Clean and Renewable Energy Huazhong University of Science and Technology Wuhan China

ISBN: (纸本)9798350328691

In order to cope with climate change, accounting for carbon emissions from electricity consumption has become particularly important. A standardized carbon emission accounting system can, on the one hand, protect the rights and interests of users and mobilize enterprises to consume green electricity, and on the other hand, can systematically grasp the overall situation of carbon emissions from the national electricity consumption, and promote the whole society to realize low-carbon transformation. In this study, we propose a user-side electricity carbon emission accounting model based on the electricity transaction flow formed by user electricity transactions. The model has four modules, which are used to deal with user power activity data, regional carbon emission factors and dynamic adjustment, user power activity carbon emissions, and carbon offsets of user environmental interest products. The spatial and temporal resolution of the model can be accurate to the provincial day scale. This study also virtualizes the electricity consumption arithmetic example of a manufacturing enterprise in Guangdong, china, which shows that the model can well capture the total carbon emissions of the enterprise's electricity consumption at different time scales and dynamically update the carbon emission factors. The example demonstrates that the model has a wide range of application potentials, which can more accurately account for user-side electricity carbon emissions, improve the spatial and temporal resolution of carbon measurement, promote the organic combination of the electricity market and the carbon market, and help china realize its dual-carbon goals. ©2023 IEEE.

关键词： Climate change

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Application of laser communication system based on Turbo code and multi-receiver fusion in power grid sensing 4

Application of laser communication system based on Turbo cod...

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4th International Conference on New Energy and power Engineering, ICNEPE 2024

作者： Li, Chun Li, Ligang Jing, Maoheng Gu, Yiling Feng, Dong Electric Power Research Institute of Ehv Power Transmission Company China Southern Power Grid Guangzhou China Chinese Academy of Sciences Shenyang Institute of Automation Shenyang China Hohai University College of Information Science and Technology Changzhou China Ehv Power Transmission Company China Southern Power Grid Guangzhou China

ISBN: (纸本)9798331516086

In this paper, we present a novel application of a laser communication system in power grid sensing, utilizing Turbo codes and multi-receiver data fusion to enhance transmission reliability. The system leverages Turbo codes for efficient error correction, while multiple receivers process and fuse received signals to improve overall data accuracy. This combination effectively mitigates the issues of signal attenuation and interference commonly encountered in wireless communication within complex environments. Through iterative decoding and weighted average data fusion, the system achieves significant improvements in bit error rate (BER), even under challenging conditions. The proposed method is validated through simulations, demonstrating its potential to ensure stable and reliable communication in modern power grid operations. © 2024 IEEE.

关键词： Iterative decoding

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Effect of Hydro-oleophobicity Coating on Swelling and Insulation Properties of SiR for Cable Accessories

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IEEE Transactions on Dielectrics and Electrical Insulation 2025年第3期32卷 1539-1548页

作者： Xing, Yunqi Zhang, Ziyi Cui, Siqian Zha, Junwei Zhu, Wenbo Liu, Hongbo Liu, Baixin Hebei University of Technology State Key Laboratory of Reliability and Intelligence of Electrical Equipment Tianjin00401 China University of Science & Technology Beijing Beijing Advanced Innovation Center for Materials Genome Engineering School of Chemistry and Biological Engineering Beijing China China Southern Power Grid Electric Power Research Institute Guangzhou510080 China

The swelling effect and deterioration of high-voltage cable accessories can easily lead to insulation breakdown and seriously threaten the safe and stable operation of high-voltage cables. This paper proposes the preparation of a surface hydro-oleophobicity coating to enhance the swelling resistance of the cable accessories. Wet thermal aging experiments were conducted on silicone rubber (SiR), with subsequent analysis of the interface properties, swelling properties, and electrical properties. The results showed that the SiO2 nanoparticle coating containing carbon-fluorine bonds was formed on the surface of the modified SiR, which enhanced the barrier effect of the sample surface on moisture and silicone grease and suppressed the swelling and damage effect on the SiR. The modification restrained the damage of aging to the surface structure of SiR and improved the surface conductivity, flashover voltage, and potential decay rate. © 1994-2012 IEEE.

关键词： SiO2 nanoparticles

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Mechanism Analysis of Mountain Fire Caused by Arc Grounding Fault Discharge in Distribution Network in Forest and Pastoral Areas 6

Mechanism Analysis of Mountain Fire Caused by Arc Grounding ...

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6th International Conference on Energy, Electrical and power Engineering, CEEPE 2023

作者： Gong, Bo Fan, Lingmeng Li, Ruihai Zhu, Dengjie Zeng, Chao Jia, Youcheng Lan, Yvting Xu, Shijie China Southern Power Grid Research Institute Co. Ltd Guangzhou China China Southern Power Grid Company Limited Guangzhou China Changsha University of Science and Technology Changsha China

ISBN: (纸本)9798350348279

The distribution network environment in forest and pastoral areas is complex and changeable, which is very easy to cause arc-like high resistance grounding fault, thus causing a large area of mountain forest fire accidents. However, arc-like grounding faults are mostly random, and it is difficult to describe their development process by traditional analysis methods. In view of this problem, this paper analyzes the process of arc grounding fault discharge causing mountain fire, establishes the arc high resistance grounding fault model considering the development characteristics of arc grounding fault, carries out the arc fault true type test of distribution network, and simulates the development process of arc fault in the distribution network of forest and pastoral areas by conducting the arc grounding fault test under the typical fault environment of forest and pastoral areas. Through the analysis of the experimental data, the influence of the change trend of the transition resistance on the electrical fire is analyzed. The test results show that the high resistance grounding fault of the distribution network in the forest and pastoral areas has a development process and is easy to cause electrical fire. © 2023 IEEE.

关键词： Fires

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Performance Study of Anti-Deterioration Additives in Alkylbenzene-Insulated High-Voltage Cable Oils

Performance Study of Anti-Deterioration Additives in Alkylbe...

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2024 International Conference on Energy and Electrical Engineering, EEE 2024

作者： Yang, Xiaoai Wang, Hongmei Liao, Jianping Liu, Zhifeng Zhu, Zhiping Zen, Churong Changsha University of Science and Technology Changsha China Electric Power Research Institute of China Southern Power Grid Ultra-high Voltage Transmission Company Guangzhou China

ISBN: (纸本)9798350341768

To mitigate the degradation rate of alkylbenzene insulation oil in oil-filled high-voltage submarine cables, this study focuses on the antioxidant performance of phenolic compounds, amine antioxidants, and metal passivators. An L9 (34) orthogonal experiment was designed to simulate oil aging in the laboratory. The results indicated that the oxidation stability multiples of alkylbenzene insulation oil significantly surpassed 8, ranging between 15 and 56, after the addition of nine composite additives. The composite additives demonstrated a notable enhancement in the antioxidant performance of alkylbenzene oil. The optimum formulation was determined to be 0.2% T501 + 0.1% L06 + 0.01% Irgamet39. © 2024 IEEE.

关键词： Oil filled cables

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A TEC-Based Thermal Solution for Quantum Current Sensors in grid Applications 6

A TEC-Based Thermal Solution for Quantum Current Sensors in ...

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6th International Conference on Energy, power and grid, ICEPG 2024

作者： Li, Xiaotong Tao, Feihu Li, Yuanhao Wang, Lei Nie, Shaoxiong Southeast University School of Electronic Science and Engineering Nanjing China Digital Grid Research Institute China Southern Power Grid Guangzhou China South China University of Technology School of Electric Power Engineering Guangzhou China

ISBN: (纸本)9798350377798

This paper investigates the heat dissipation problem of a diamond NV quantum current sensor with an integrated laser diode in practical applications. Firstly, the heat generation of the internal components of the sensor is evaluated through experimental analysis. The findings indicate that the sensor with this structure is susceptible to heat accumulation during high-power operation, which subsequently affects the sensor's performance. To address this issue, a heat dissipation scheme utilizing a thermal electric cooler (TEC) in conjunction with heat sink fins is proposed, and the performance of two distinct heat sink fins is evaluated. The experimental results demonstrate that the heat sink fins with heat pipes exhibit an enhanced heat dissipation effect while maintaining a compact size and minimal weight. Furthermore, in order to reduce the magnetic field interference caused by the TEC, a distal-mounted TEC scheme is designed. However, this scheme exhibits a lower heat dissipation efficiency compared to the proximal-mounted TEC scheme at 2W heating power. This study proposes a solution for the heat dissipation design of this type of quantum current sensor, which provides a reliable method for its future application in power grid systems. © 2024 IEEE.

关键词： Fins (heat exchange)

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Coupling Characteristics of DFIG-based WT Considering Reactive power Control and Its Impact on Phase/Amplitude Transient Stability in a Rotor Speed Control Timescale

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CSEE Journal of power and Energy Systems 2022年第2期8卷 511-522页

作者： Wangqianyun Tang Jiabing Hu Rui Zhang Xu Chen Zhengang Yang Electric Power Research Institute China Southern Power GridGuangzhou 510080China State Key Laboratory of Advanced Electro-magnetic Engineering and Technology and School of Electrical and Electronic Engineering Huazhong University of Science and TechnologyWuhan 430074China State Key Laboratory of Advanced Electro-magnetic Engineering and Technology and School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China China Southern Power Grid Guangzhou 510080China

The transient stability issues caused by doubly fed induction generator(DFIG)-based wind turbines(WTs)are receiving increasing *** q-axis reactive power control(QCtrl),as an essential part of DFIG-based WTs,has a significant impact on its transient *** this paper,the impact of QCtrl on the phase/amplitude transient stability of a DFIGbased WT-dominated system is analyzed from the perspective of internal voltage amplitude-phase coupling ***,an amplitude/phase dynamic model of a DFIG-based WT in rotor speed control timescale(in seconds,corresponding to traditional electromechanical timescale)is ***,in comparison with familiar synchronous generators(SGs),an inherently amplitude-phase characteristic of internal voltage for a DFIG-based WT is ***,taking the DFIG-based WTdominated system as an example,the impact of QCtrl on system transient stability via the internal coupling paths is analyzed.A novel phase-amplitude coupling instability mechanism is found,which is different from that in a traditional SG-dominated ***,the effects of different QCtrl strategies on transient stability are discussed.

关键词： Amplitude-phase response coupling characteristic reactive power control instability mechanism transient stability

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Intelligent Prediction and Data Service Ptimization Scheme of power grid Based on Improved Bee Colony Algorithm

Journal of Network Intelligence

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Journal of Network Intelligence 2024年第1期9卷 253-272页

作者： Liu, Bo Zhou, Wang Ren, Haowen Fan, Zhongkai China Southern Power Grid Digital Platform Technology Company Guangdong Guangzhou510000 China School of Science of Zhejiang Sci-Tech University Zhejiang Hangzhou310018 China School of Electrical Engineering Northeast Electric Power University 169 Changchun Road Jilin132012 China

In recent years, the power industry is facing more and more new cyber threats, with the Ukrainian power grid being attacked twice, triggering large-scale black-outs, and the Iranian nuclear power being attacked by virus voltage. Therefore, realizing intelligent prediction and data service optimization of complex power grid has remark-able positive significance. In this paper, we combine narrow-band filter detection method, adaptive learning algorithm and piecewise linear regression analysis technique to build the model of power grids. Then according to the characteristic parameters of the grid, combining with the link prediction algorithm and the optimized Dijkstra algorithm, an optimization method of the grid characteristic model is proposed considering outliers of the reconstructed network, so as to better provide instructive suggestions for the overall network restoration. Then, this paper analyzes some algorithms, such as the classical link prediction algorithm, the anomalous edge link prediction algorithm and anomaly-based grid intelligent prediction algorithm. Not only the multi-objective swarm optimization algorithm but the anomalous link prediction swarm intelligent optimization algorithm is proposed to solve the grid model in this article. By using the SIOA-ALP anomaly link prediction swarm intelligent optimization algorithm and other benchmark social network opinion propagation control methods, the simulation experiment of topological power grid anomaly link prediction is realized. Comparing the experimental results under different data sets, and supplemented with the statistical checkout, advantages of the model and algorithm given in the paper are fully reflected, which can provide a better intelligent prediction and data service optimization scheme for complex large-scale power grid. At the end of this paper, the relevant research directions in the future are prospected and predicted. © 2024, Taiwan Ubiquitous Information CO LTD. All rights reserved.

关键词： Forecasting

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Low-carbon scheduling of park-level integrated energy systems considering carbon trading mechanisms and demand response 8

Low-carbon scheduling of park-level integrated energy system...

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8th International Conference on Energy System, Electricity, and power, ESEP 2023

作者： Liu, Mengna Yu, Min Chen, Jiongcong Tang, Yu China Southern Power Grid Guangzhou510663 China School of Energy Science and Engineering University of Science and Technology of China Hefei China Guangzhou Institute of Energy Conversion Chinese Academy of Sciences Guangzhou501640 China China Southern Power Grid Electrical Technology Co. LTD Guangzhou510080 China Guangdong Provincial Key Laboratory of New Technology for Smart Grid Guangzhou510080 China

ISBN: (数字)9781510679801

ISBN: (纸本)9781510679795

To comprehensively investigate the impact of demand-side adjustability on carbon emission reduction, this paper introduces a park-level integrated energy system(PLIES), integrating considerations for both the carbon trading mechanism and demand response. Initially, demand response is classified into price-based and alternative-based categories based on load characteristics. Subsequently, the paper establishes a price-based demand response model incorporating the price elasticity matrix, and an alternative-based demand response model considering the interconversion of multiple loads like cooling, heating, and electricity. The baseline method is then applied to allocate carbon emission allowances for the system, accounting for actual emissions from the gas turbine, gas boiler, and absorption refrigeration unit. The developed model is suitable for the PILES, encompassing a carbon trading mechanism that considers actual emissions from various equipment. Finally, a low-carbon dispatching model for the PLIES is formulated, aiming to minimize the sum of energy purchase costs, carbon trading costs, and operation and maintenance costs. The paper validates the model through four typical scenarios, analyzing the impacts of different carbon trading prices, operation costs, and carbon emissions. The key conclusion emphasizes the importance of establishing a reasonable carbon trading price to achieve synergy between system economy and low carbon. © 2024 SPIE.

关键词： Parks

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