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Performance Testing on GOOSE and MSV Transmission in One Network

Energy Procedia 2011年 12卷 185-191页

作者： Jing Li Qi Huang Feng-kai Hu Shi Jing Sichuan Provincial Key Lab of Power System Wide-area Measurement and Control University of Electronic Science and Technology of China (UESTC) Chengdu Sichuan China

lEC 61850 “Communication networks and systems in substation” is not only the most advanced and universal standard for communication but also a comprehensive system oriented standard for substation automation system (SAS). This paper proposes a transmission solution for communication scheme which combines Multicast Sampled Value (MSV) and Generic Object Oriented Substation Event (GOOSE) information in one network (Transmit MSV and GOOSE simultaneously with a network transmission line). MSV and GOOSE are described detail in the next context, and then the traffic flow and the delay of the two messages are estimated respectively. In this article, transmission performance tests based on the architecture of a single network are designed and implemented. The single event and multi-event tests show that the latency of the packets is quite small and the real-time performance satisfies the requirement of the intelligent substation.

关键词： IEC 61850 MSV GOOSE SAS Transmission performance

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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-power-and-Energy-Society General Meeting

作者： Liu, Qunying Liu, Qifang Huang, Qi UESTC Sichuan Prov Key Lab Power Syst Wide Area Measurement & Control Chengdu 611731 Peoples R China Guodian Sichuan Ashine Power Co Ltd Chengdu 610041 Peoples R China

ISBN: (纸本)9781424483570

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： vulnerability of grid energy function voltage vulnerability the reactive power injection ingredients branch transmission ability

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New type of fiber optic sensor network for smart grid interface of transmission system

New type of fiber optic sensor network for smart grid interf...

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IEEE General Meeting power& Energy Society

作者： Qi Huang Changhua Zhang Qunying Liu Yan Ning Yongxing Cao Sichuan Provincial Key Lab of Power System Wide-area Measurement and Control University of Electronic Science and Technology Chengdu Sichuan China Sichuan Provincial Key Lab of Power System Wide-area Measurement and Control SICHUAN Electric Power Test and Research Institute Chengdu Sichuan China

Smart Grid is aimed to incorporate monitoring, analysis, control and communication capabilities to improve reliability and energy efficiency. However, currently there is no enough sensor to provide information interface for the implementation of smart grid. Therefore, new types of sensors should be deployed to assist the implementation of smart grid. This paper proposes a novel scheme, in which new type of fiber optic sensors (as compared with traditional Farady effect based fiber optic sensor used in power system instrumentation) are used to provide multiple types of information for smart grid. The new Fiber Bragg Gratting (FBG) is advantageous in that it can collect variant types of information and can form a sensor network. A transmission line monitoring system with distributed fiber optic senor network is designed, and the procedures to evaluate the status of the overhead transmission line (such as sag, vibration, and galloping) are proposed. A testing setup is built at laboratory, and it is shown that the FBG sensor is capable of obtaining the comprehensive information for evaluating the status of the overhead transmission line.

关键词： power transmission lines Optical fiber sensors Transmission line measurements Optical fibers Fiber gratings Temperature measurement

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Hierarchical control Scheme for VSC-MTDC system with multiple Renewable Energy Sites Based on Optimal power Flow and Droop Scheme 6

Hierarchical Control Scheme for VSC-MTDC System with multipl...

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6th IEEE Conference on Energy Internet and Energy system Integration, EI2 2022

作者： Raza, Asif Huang, Qi Li, Jian Bamisile, Olusola Dongsheng, Cai Raza, Ghalib University of Electronic Science & Technology of China Sichuan Provincial Key Lab of Power System Wide -Area Measurement and Control School of Mechanical and Electrical Engineering China Chengdu University of Technology College of Nuclear and Automation Engineering Sichuan Provincial Key Lab of Power System Wide-Area Measurement and Control School of Mechanical and Electrical Engineering University of Electronic Science & Technology of China China University of Electronic Science & Technology of China China Chengdu University of Technology College of Nuclear and Automation Engineering Sichuan China Benazir Bhutto Shaheed University of Technology & Skill Development Khairpur Pakistan

ISBN: (纸本)9798350347159

This paper designs a hierarchical control system to improve control performance in a multi-terminal high voltage direct current based on the voltage source converter (VSC-MTDC) transmission system. In this control scheme, the primary control layer employs droop control, while the secondary control layer has developed optimal power flow control (OPF) for maintaining the variation of DC voltage and regulating the active power, and simultaneously minimizing power loss. In the event of a power disturbance or a change in power generation or consumption in the DC system, based on OPF results a new stable droop operating mode is established to stabilize DC voltage variation and regulate active power in the network. A ±400 kV four-terminal VSC-MTDC test network has been developed by using PSCAD and MATlab simulation tools to assess the proposed control scheme. The primary controller is designed in PSCAD, and the secondary optimum control technique is applied in MATlab. The results of steady-state and transient operating modes demonstrate that the planned control technique can achieve DC voltage regulation and keep active power, and minimize the power losses in the MTDC system. © 2022 IEEE.

关键词： MATlab

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Blockchain Based Domestic Appliances Scheduling in Community Microgrids

Blockchain Based Domestic Appliances Scheduling in Community...

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2019 IEEE PES Innovative Smart Grid Technologies Asia, ISGT 2019

作者： Afzal, M. Umer, Khalid Amin, Waqas Naeem, M. Cai, Dongshang Zhenyuan, Zhang Huang, Qi 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 Chengdu611731 China Department of Electrical and Computer Engineering COMSATS University Islamabad Wah Campus Pakistan

ISBN: (纸本)9781728135205

This paper proposes an optimization model for community microgrid. The proposed scheme performs the scheduling of domestic appliances in a community microgrid using renewable energy resources. The objective of the scheme is to minimize the total operating cost in the whole community. The optimization problem is solved using the branch and bound algorithm. Blockchain (BC) technology is introduced for secure implementation of the proposed approach. Machine to machine interaction is facilitated using BC technology. The transaction information/ data is stored in the distributed shared ledger. The smart contract is used to automatically trigger the flow of electricity and the movement of funds once the necessary conditions are met. © 2019 IEEE.

关键词： Blockchain

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Smart Grid Facing the New Challenge: The Management of Electric Vehicle Charging Loads

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Energy Procedia 2011年 12卷 98-103页

作者： Changhua Zhang Qi Huang Jiashen Tian Lei Chen Yongxing Cao Ran Zhang Sichuan Provincial Key Lab of Power System Wide-area Measurement and Control University of Electronic Science and Technology of China. Chengdu China Sichuan Electric Power Test & Research Institute Chengdu China

Because of the energy shortage, air pollution and greenhouse gas over mission, the plug-in electric vehicles can be looked as the alternative of the current fossil fuels vehicles. But PHEVs charging brings out the serious problem to the power systems security operation. Smart grid, with its flexible operation ways, is likely to solve this problem. This paper discusses the relationship between the smart grid and the PHEVs charging load. Then introduce the PHEVs influence on the power system based its different operation model. The third part presents the coordinated charging schedule model and in the last part, some core technologies to construct the communication net are also discussed.

关键词： Charging loads plug-in hybrid electric vehicles (PHEV) smart grid zigbee

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Data-driven load frequency cooperative control for multi-area power system integrated with VSCs and EV aggregators under cyber-attacks

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ISA TRANSACTIONS 2023年 143卷 440-457页

作者： Zhang, Guangdou Li, Jian Xing, Yankai Bamisile, Olusola Huang, Qi Univ Elect Sci & Technol China Sch Mech & Elect Engn Power Syst Wide Area Measurement & Control Key Lab Sichuan Prov Chengdu Sichuan Peoples R China Chengdu Univ Technol Sichuan Ind Internet Intelligent Monitoring & Appl Chengdu Sichuan Peoples R China Southwest Univ Sci & Technol Elect Engn Dept Mianyang Sichuan Peoples R China

This paper proposes a cooperative load frequency control (LFC) strategy based on a multi-agent deep reinforcement learning (MADRL) framework for the multi-area power system in the presence of voltage source converters (VSCs) and electric vehicle (EV) aggregators under cyber-attacks. Different from the existing LFC model, a novel transfer function of VSCs is first improved by the space-vector technique and integrated with EV aggregators to develop a multi-area training environment. By installing the agent in different control areas and interacting state transition information between agents and the new environment, the MADRL-based control strategy is achieved for centralized training and decentralized execution. Thus, the proposed MADRL method can coordinate thermal turbines, VSCs, as well as EV aggregators in the different control areas. Furthermore, a suitable cyber-attack model that can circumvent bad data detection (BDD) is reconstructed according to the perspective of adversaries for the LFC system. Then the double critic networks and parameter updating policy are designed to eliminate and mitigate the fluctuations caused by cyber-attacks. The comparative simulation with other control strategies on a three-area test power system demonstrates the superior performance of the proposed MADRL-based approach.

关键词： Load frequency cooperative control Multi-agent deep reinforcement learning Voltage source converter Electric vehicle aggregators Cyber-attacks

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Vulnerability analysis and modeling false data injection attack against voltage source converter in renewable generation power system

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ISA TRANSACTIONS 2023年 143卷 492-502页

作者： Xing, Yankai Zhang, Guangdou Li, Jian Bamisile, Olusola Cai, Dongsheng Huang, Qi Univ Elect Sci & Technol China Sch Mech & Elect Engn Power Syst Wide Area Measurement & Control Key Lab Chengdu Sichuan Peoples R China Chengdu Univ Technol Sichuan Ind Internet Intelligent Monitoring & Appl Chengdu Sichuan Peoples R China Southwest Univ Sci & Technol Elect Engn Dept Mianyang Sichuan Peoples R China

With the increasing penetration of renewable resources, more power electronic devices that need communi-cation with control centers may bring a novel risk of cyber attacks. This paper investigates the vulnerability of the hierarchical control and proposes a false data injection attack (FDIA) constructing algorithm against voltage source converters. The attack can be accomplished via a physical attack generator or falsification via attacking supervisory control and data acquisition system. By developing the FDIA model against state estimation, the proposed attack model can circumvent bad data detection in the secondary control loop. The tests are carried out on a single converter infinite bus benchmark and an IEEE 34-bus system. The results show that the proposed attack model can mislead the system to produce threatening oscillation.

关键词： Voltage source converter Renewable generation False data injection attack Cyber-physical power system

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Separated Double-Layer Magnetic Shielding with Magnetic Sensor for Large Current measurement

Separated Double-Layer Magnetic Shielding with Magnetic Sens...

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2018 International Conference on Innovative Smart Grid Technologies, ISGT Asia 2018

作者： Chen, Yafeng Huang, Qi Khawaja, Arsalan Habib Sichuan Provincial Key Lab of Power System Wide-Area Measurement and Control School of Energy Science and Engineering University of Electronic Science and Technology of China Chengdu China U.S.- Pakistan Center for Advanced Studies in Energy National University of Sciences and Technology Islamabad Pakistan

ISBN: (纸本)9781538642917

One drawback of contactless current measurement by magnetic sensor is that its detected results can be easily affected by the superposition of the external magnetic interference. Damping the effect of the noise is complex and delicate without the knowledge of the interference. The usage of magnetic shielding is one potent way to compensate the shortcoming. However, complete magnetic shielding fails to provide the shielding for the shielding only happens within the material. Therefore, in this paper, a separated double-layer structure with the gap is proposed for large current measurement with strong magnetic noise from random places. The ambition is to keep the targeted magnetic field within the shielding stable even when exposed to strong magnetic interference environment. Parameters of the designed structure are investigated and the validation of the structure is confirmed by finite element analysis method when the magnitude of the current under measurement ranging up to 1000 A. From FEA method, when the interference is at arbitrary places around the conductor, the standard deviation without and with noise is less than 0.13, authenticating the efficacy of this shielding structure. © 2018 IEEE.

关键词： Magnetic sensors

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Development of a tool for the analysis of power system higher order oscillation

Development of a tool for the analysis of power system highe...

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IEEE General Meeting power& Energy Society

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

The analysis of higher order modal interaction attracts much attention from scholars all over the world. The normal form theory and the modal series method offer new ideas for solving these problems. However, literature review and simulation show that modal analysis for a certain case with these approaches may obtain different results. In this paper, the currently available methods are integrated into a tool PSMAT (power system modal analysis tool), so that one can compare the results with different approaches, and then select the most appropriate method for his analysis purpose. The developed tool has all the functionalities in modal analysis as well as the quantitative indices. The design of the tool is described and case studies are presented. The results obtained with this tool are discussed. It is verified that this tool is effective, in both modal analysis and comparison of the approaches.

关键词： power system analysis computing Modal analysis power system modeling power system simulation power system stability power system interconnection Taylor series Signal analysis Performance analysis Equations

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