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IEEE General Meeting power& Energy Society

作者： Qi Huang Yong Chen Changhua Zhang Sichuan Provincial Key Laboratory of Power System Wide-area Measurement and Control University of Electronic Science and Technology Chengdu Sichuan China

This paper reports part of the results in the project to develop an on-load de-icing system. In the system, a high frequency high voltage excitation with adjustable frequency, is used to de-ice the ice covered on long power transmission line. The system is highly efficient in de-icing due to the joint heating effect brought by transmission line loss and dielectric loss. The mathematical model of the system is developed. And on the basis of analysis and numerical simulation results, an adaptive scheme is designed. In the system, networked sensors are deployed to monitor the ice condition on transmission line, and on-line regulate the frequency of the high-voltage excitation according to the monitored ice information, to ensure that there is no severe ice-covering spot on long transmission line.

关键词： power transmission lines Frequency Ice Dielectric losses Propagation losses Condition monitoring Voltage Heating Mathematical model Numerical simulation

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A panoramic test system for intelligent substation based on wireless time synchronization technology

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Dianli Xitong Zidonghua/Automation of Electric power systems 2013年第2期37卷 72-78页

作者： Jing, Shi Huang, Qi Zhen, Wei Wang, Biao Key Lab of Wide-area Measurement and Control on Power System of Sichuan Province University of Electric Science and Technology of China Chengdu 611731 China Sichuan Electric Power Research Institute Chengdu 610072 China

The organization and distribution of information in secondary system of intelligent substation is so complex that it is almost impossible to use traditional test approach to identify the drawbacks. A novel panoramic test method based on wireless time synchronization technology is presented and the corresponding system is developed. The proposed system performs debugging test of intelligent substation secondary system under steady-state and transient state based on numerical simulation of power network, distributed injection of synchronized signals, wireless time synchronization and data transmission, etc. Total design of the test system and implement scheme of wireless synchronization technology is described. And accuracy of synchronization has been verified. The developed system has been applied to the test of many intelligent substations under construction. It shows that the proposed approach improves the integrity and the efficiency of the test, achieving better test results. © State Grid Electric power Research Institute Press.

关键词： Synchronization

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A DLL-based Router Scheme for the Process-layer Network in Smart Substations 5

A DLL-based Router Scheme for the Process-layer Network in S...

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5th IEEE International Conference on Electronics Technology, ICET 2022

作者： Guo, Rui Zheng, Ai Huang, Qi Sun, Huabo Chen, Lei Beijing Microelectronics Technology Institute Fpga Department Beijing China Smart Network Innovation Center China United Network Communications Limited Beijing China University of Electronic Science and Technology of China Sichuan Provincial Key Lab of Power System Wide-area Measurement and Control Chengdu China

ISBN: (纸本)9781665485081

With the extensive utilization of Intelligence Electronic Devices (IED), the modern smart substation is regard of a typical Internet of Things (IoT) system. The process-layer network in smart substations, which carries the measurements and control signals, needs to operate reliably in the face of unforeseen failures and external malicious attacks. In this paper: i) a mathematical framework for the process-layer network, attacks, and signals is modeled;ii) fundamental network performance limitations from system-theoretic and graph-theoretic perspectives are characterized;and iii) A DLL-based Router Scheme (DRS) is designed to ensure the network performance for the effective operation of IoT. Finally, we validate our design through a series of cases, and the results show that the designed DRS is effective to smooth the network performance. © 2022 IEEE.

关键词： Internet of things

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A Two-Stage Robust Scheduling Strategy for Multi-Energy Microgrid Considering Multiple Uncertainties 8

A Two-Stage Robust Scheduling Strategy for Multi-Energy Micr...

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8th International Conference on power Energy systems and Applications, ICoPESA 2024

作者： Zhang, Sen Hu, Weihao Cao, Xilin Zhao, Yincheng Liu, Rundong Ma, Haojie Zhan, Wei Li, Mingxuan School of Mechanical and Electrical Engineering University of Electronic Science and Technology of China Sichuan Provincial Key Lab of Power System Wide Area Measurement and Control Chengdu China School of Management and Economics Beijing Institute of Technology Beijing China SPIC Southwest Energy Research Institute Chengdu China

ISBN: (纸本)9798350351668

To achieve the economic operation of a multi-energy micro grid under multiple uncertain environments, this study introduces a novel two-stage robust scheduling approach, encompassing both day-ahead planning and real-time adjustments. First, the multi-energy micro grid day-ahead economic dispatch model is constructed based on the prediction scenarios, and integrated demand response is considered to increase the flexibility of the system. Afterwards, the strategy is adjusted in the real-time phase, considering the uncertainty of energy production and consumption. The Column-and-Constraint Generation algorithm is employed to resolve the above two-stage issues effectively, and the optimal economic operation strategy of the MEMG is obtained. Finally, a case study demonstrates the economy and robustness of the proposed methodology. © 2024 IEEE.

关键词： Demand response

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A new assessment method to voltage vulnerability within the static energy frame

A new assessment method to voltage vulnerability within the ...

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IEEE General Meeting power& Energy Society

作者： Qunying Liu Qifang Liu Qi Huang Sichuan Provincial Key Lab of Power System Wide-area Measurement and Control UESTC Chengdu China GUODIAN Sichuan Ashine Power Company Limited Chengdu China

ISBN: (纸本)9781424465491

Voltage vulnerability has been important in power system security research. Considering the characteristic that the voltage are mainly influenced by the reactive power, the potential energy margin which can embody the impacts from the reactive load, the reactive output of generator, the reactive compensation, and so on, was proposed as the benchmark, and then, the degree index and the trend index of voltage vulnerability were derived, the impacts of grid topology and the reactive power inject ingredients on the voltage vulnerability were discussed. On this base, the assessment index of branch vulnerability was proposed to compute the distance of the current value of branch transmission to the initial value and ascertain the vulnerable area. In IEEE-30bus system, the feasibility and exactness of this method are identified by the simulation.

关键词： Indexes Reactive power Potential energy Equations Generators Mathematical model Production

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Multi-objective resilient recovery strategy for urban wind-solar-MPS-EV electric system after disastrous events

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APPLIED ENERGY 2024年 369卷

作者： Xu, Yihao Xing, Yankai Zhang, Guangdou Li, Jian An, Haopeng Bamisile, Olusola Huang, Qi Univ Elect Sci & Technol China Sch Mech & Elect Engn Power Syst Wide Area Measurement & Control Key Lab Chengdu 611731 Sichuan Peoples R China Chengdu Univ Technol Coll Nucl Technol & Automat Engn Chengdu 610059 Sichuan Peoples R China Southwest Univ Sci & Technol Mianyang Peoples R China

The situation in an urban distribution network becomes intricate under high -impact, low -probability events. Furthermore, the growing quantity of components within the urban distribution network renders their analysis more challenging. Thus, the desired recovery strategy should not only meet the requirements of restoration rates but also guarantee a stable power supply. To address this issue, this paper proposes a multi -objective decision analysis framework, which consists of EV user requirements, MPS routing, and emergency repair crew schedule, to generate a more precise recovery strategy. These objectives' dynamic behaviors in the transportation network are transformed into spatiotemporal characteristic variables and introduced into inequality constraints. Also, the Wasserstein generative adversarial network with gradient penalty is employed in this framework to characterize solar and wind realistic output. By minimizing the weighted sum composed of MPS operational costs, EV user expenses, load loss, and voltage fluctuation, an optimized recovery strategy is provided to the grid operator. Case studies investigate the effectiveness of recovery strategy in IEEE 33 -bus and 123 -bus benchmark systems. The results indicate the proposed approach can effectively handle complex scenarios achieving rapid and reliable restoration, while also preserving regular charging behavior and maintaining a stable power voltage supply.

关键词： power system resilience Electric vehicles Distribution system restoration power quality High -impact and low -probability (HILP) events

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A double-ended contactless current traveling waves scheme for fault location in overhead transmission lines 4

A double-ended contactless current traveling waves scheme fo...

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4th IEEE Conference on Energy Internet and Energy system Integration, EI2 2020

作者： Ayambire, Patrick Nyaaba Huang, Qi Bamisile, Olusola Anane, Paul Oswald Kwasi Awopone, Albert K. Sichuan Provincial Key Lab of Power System Wid-Area Measurement and Control School of Mechanical and Electrical Engineering Chengdu China University of Education College of Technology P.O. Box 1277 Winneba Kumasi Ghana

ISBN: (纸本)9781728196060

This study presents a contactless current traveling wave fault location scheme for a two-terminal overhead transmission line based on a tunnel Magnetoresistive sensor. The proposed method is implemented by installing a tunnel Magnetoresistive sensor array at both ends of the line for current traveling wave measurement. The measured data is transmitted to a remote monitoring unit (RMU) for analysis. The performance of the proposed method is evaluated for different fault situations using an experimental set-up. The proposed exhibited high efficiency for current traveling wave fault location. The results were analyzed for fault location using the differentiator smoother to reduce the time of arrival errors. The proposed scheme is compared with a general traveling wave-based scheme for transmission line fault distance location. In all test cases, the proposed scheme offered very efficient results for all categories of faults with an average relative error of 0.024%. © 2020 IEEE.

关键词： Location

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A new wireless time synchronization approach for whole-view test system in smart substation

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Dianli Xitong Zidonghua/Automation of Electric power systems 2013年第9期37卷 103-109页

作者： Jing, Shi Huang, Qi Zhen, Wei Wu, Jie Key Lab. of Wide-Area Measurement and Control on Power System of Sichuan Province University of Electronic Science and Technology of China Chengdu 611731 China Sichuan Electronic Power Research Institute Chengdu 610072 China

The whole-view test method for smart substation is a new test approach in which data transmission and time synchronization are implemented with wireless communication. This paper proposes a new time synchronization method based on wireless local area networks (WLAN) to satisfy the demand of synchronized triggering of data and time labeling in the system. The proposed method is implemented by integrating IEEE 1588 precise time protocol and IEEE 802.11 WLAN standard considering the specialty of transmission mechanism and data link in wireless communication, thus current available time synchronization method is improved. Simulation result shows that the precision of wireless time synchronization can be improved up to ±10 μs. © 2013 State Grid Electric power Research Institute Press.

关键词： IEEE Standards

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DC Bus Voltage Regulation for Distributed Energy Sources through Buck-Boost Converter in a Direct Current Micro Grid

DC Bus Voltage Regulation for Distributed Energy Sources thr...

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2019 IEEE PES Innovative Smart Grid Technologies Asia, ISGT 2019

作者： Solangi, Asif Raza Huang, Qi Raza, Ghalib Abbas, Muneer Solangi, Siraj Hyder Sichuan Provincial Key Lab of Power System Wide -Area Measurement and Control School of Mechanical and Electrical Engineering University of Electronic Science and Technology of China China Benazir Bhutto Shaheed University of Technology and Skill Development Khairpur Pakistan Indus University Karachi Pakistan University of Sindh Jamshoro Pakistan

ISBN: (纸本)9781728135205

Direct current micro-grid (DCMG) based on renewable energy sources (RES) is facing an issue of maintaining standard voltage at DC bus under variable power generation and utilization. This paper proposes the DCMG based on distributed energy sources (DES) and buck-boost converter to maintain standard voltage at DC bus. Photovoltaic panel (PV), wind turbine (WT) and battery are utilized as DES. PV, battery and WT are linked to DC bus through buck-boost converter. The simulation model of PV and WT has been developed using MULTISIM simulation tool. To measure the performance of the designed system, the DC load of 500 watt has been organized for DCMG system. The protection from reverse current flow and over voltage is also provided. The simulation outcomes verified that, at DC bus standard voltage has been maintained for both utilization and generation. © 2019 IEEE.

关键词： Wind turbines

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Calculation and Simulation Analysis of Current Carrying Capacity and Thermal Effect of 500kV Tunnel Cable

Calculation and Simulation Analysis of Current Carrying Capa...

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IEEE Conference on Energy Internet and Energy system Integration (EI2)

作者： Ruipeng Liang Qi Huang Olusola Bamisile Jian Li Zhenyuan Zhang Dongsheng Cai School of Nuclear Technology and Automation Engineering Chengdu University of Technology Chengdu China Sichuan Provincial Key Lab of Power System Wide-Area Measurement and Control University of Electronic Science and Technology of China Chengdu China Sichuan Provincial Key Lab of Power System Wide-Area Measurement and Control University of Electronic Science and Technology of China

The Qinghai-Tibet Plateau contains the most abundant clean energy such as hydropower, wind and solar in the world. However, it is very difficult to add overhead transmission lines on the ground due to the complex geographical environment. The large-capacity tunnel cables which is less affected by the earth surface environment, may play an important role on the energy transmission in such area. Based on the cable thermal circuit model, the electrical-magnetic-thermal multiphysics coupling of the cable is modeled in COMSOL Multiphysics. The parameter changes of the material during the temperature rising process, the influence of different ventilation conditions and different current-carrying capacities on the changes of the cable temperature field are quantitatively analyzed. The results show that the proposed model is valid in certain conditions. The research on the current carrying capacity and thermal effect of tunnel cables is of great significance for the transportation and consumption of large-scale clean energy resources.

关键词： Couplings Surface cleaning Analytical models power cables Transportation Hydroelectric power generation system integration

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