作者机构：
[杜章华; 苏盛] School of Electrical and Information Engineering, Changsha University of Science & Technology, Changsha;410114, China;[刘正谊] State Grid Changde Power Supply Company, Changde;415000, China;[薛阳; 杨艺宁; 刘厦] China Electric Power Research Institute, Beijing
通讯机构：
[Su, S.] S;School of Electrical and Information Engineering, China
作者机构：
[肖勇; 钱斌; 蔡梓文] Electric Power Research Institute of China Southern Power Grid, Guangzhou;510663, China;[洪亮; 苏盛] College of Electrical Engineering, Changsha University of Science and Technology, Changsha;410114, China;[肖勇; 钱斌; 蔡梓文] 510663, China
通讯机构：
[Su, S.] C;College of Electrical Engineering, China
关键词：
power engineering computing;synchronisation;Global Positioning System;power system security;cyber-physical systems;GPS spoofing-based time synchronisation attack;power utilities;cyber-security defence;air-gapped systems;critical power system infrastructure;cyber-attack;global positioning system spoofing;air-gap system;cyber-physical system;GPS-based time synchronisation;GPS spoofing-based TSA;control systems
摘要：
Power utilities implement cyber-security defence with a philosophy of defence in-depth. Firewall and air-gapped systems are widely used to harden cybersecurity defence of critical power system infrastructure. However, cyber-attack, such as global positioning system (GPS) spoofing, that can compromise the air-gap system has not been investigated thoroughly. As a geographically dispersed cyber-physical system, the power system relies heavily on the GPS to keep time synchronisation of different parts with high precision. GPS spoofing-based time synchronisation attack (TSA) could induce disorder in time synchronisation, and negatively impact or even disable monitoring and control function of the power system via their operation mechanism. The principles of GPS-based time synchronisation and GPS spoofing-based TSA are introduced. Time synchronisation and operation mechanism of typical monitoring and control systems of the power systems are analysed. Thereafter, the consequences of TSA against these systems are analysed. Various techniques that can be used to defend against TSA are depicted and their performances are analysed.
作者机构：
[Ziwen, Cai; Yong, Xiao; Bin, Qian] China Southern Power Grid, Elect Power Res Inst, Guangzhou 510080, Peoples R China.;[Liang, Hong; Sheng, Su] Changsha Univ Sci & Technol, Coll Elect & Informat Engn, Changsha 410004, Peoples R China.
通讯机构：
[Yong, Xiao] C;China Southern Power Grid, Elect Power Res Inst, Guangzhou 510080, Peoples R China.
关键词：
Meters;Ground penetrating radar;Authentication;Long Term Evolution;Smart meters;Virtual private networks;3G mobile communication;Rogue base station;cyber-attack;clustering analysis;advanced metering infrastructure
摘要：
The smart meters and meter collectors in Advanced Metering Infrastructure (AMI), which are installed in every home, rely on wireless Virtual Private Network (VPN) for communicating with Head End System (HES). Therefore, they are prone to suffer from malicious cyber-attack. Usually, based on General Packet Radio Service (GPRS) communicated method is the most popular for meter collectors and consequently they are vulnerable to rogue Base Stations (BS) and get compromised by malicious adversaries further. Thus a Density-based spatial clustering of applications with noise (DBSCAN) method is employed to filter rogue BSs out and prevent meter collectors from attaching to them, because there is a notable difference between Signal Strength (SS) profile of legitimate BSs and rogue BSs, Numerical simulation indicates that the proposed approach is capable of detecting both stationary and moving rogue BSs online within fixed time window effectively. Moreover, the method can be implemented in existing meter collectors with limited computation resource. In conclusion, the proposed approach can enhance the level of cyber security of meter collectors.
作者机构：
[刘亮; 苏盛; 张恒] Hunan Province Key Laboratory of Smart Grids Operation and Control, Changsha University of Science and Technology, Changsha;410004, China;[陈晓国] Electric Power Research Institute of China South Grid, Guangzhou;530080, China;[刘亮; 苏盛; 张恒] 410004, China
通讯机构：
[Liu, L.] H;Hunan Province Key Laboratory of Smart Grids Operation and Control, China
期刊：
电力系统自动化,2017年41(5):134-138 and 152 ISSN：1000-1026
通讯作者：
Su, Sheng(346078890@qq.com)
作者机构：
[苏盛; 李志强; 谷科] Hunan Province Key Laboratory of Smart Grids Operation and Control (Changsha University of Science and Technology), Changsha;410004, China;[石东源] State Key Laboratory of Advanced Electromagnetic Engineering and Technology (Huazhong University of Science and Technology), Wuhan;430074, China;[钱斌] Electric Power Research Institute of China Southern Power Grid, Guangzhou
通讯机构：
[Su, S.] H;Hunan Province Key Laboratory of Smart Grids Operation and Control (Changsha University of Science and Technology)China
作者机构：
[李田; 苏盛; 杨洪明] Hunan Province Key Laboratory of Smart Grids Operation and Control (Changsha University of Science and Technology), Changsha;410004, China;[文福拴] College of Electrical Engineering, Zhejiang University, Hangzhou;310027, China;Department of Electrical and Electronic Engineering, Universiti Teknologi Brunei, Bandar Seri Begawan
通讯机构：
[Su, S.] H;Hunan Province Key Laboratory of Smart Grids Operation and Control (Changsha University of Science and Technology)China
作者机构：
[Zuliang Yin; Bo Bai; Jiani Liu; Sheng Su] College of Electrical and Electronic Engineering, Changsha University of Science and Technology
会议名称：
The 9th Asia-Pacific Power and Energy Engineering Conference (APPEEC 2017)
会议时间：
2017-04-15
会议地点：
中国四川成都
关键词：
Wind Power;Wind Turbine;Startup;Dead Band
摘要：
<div style="text-align:justify;">
<span style="line-height:1.5;">Wind turbines are usually designed and operated with fixed startup speed. It could perform startup and shutdown operations repeatedly when the wind fluctuates around the startup speed. The excessive stress induced by frequent startup and shutdown could enhance the likelihood of component failure and hence negatively impact the availability of a wind turbine. Startup speed with dead band is proposed in this article to prevent the wind turbine from frequent startup. 22 years wind data from the Cheung Chau wind station in Hong Kong are analyzed to evaluate the reduction in the number of startup and potential loss of wind power production using the proposed approach. Numerical simulation suggests that the number of startup could be reduced by half with trivial reduction in potential wind power generation in most of investigated sites once an appropriate dead band is adopted.</span>
</div>
会议论文集名称：
IEEE Industry Applications Society Annual Meeting
关键词：
Wind power generation;wind turbines;re-cutin speed;dead time
摘要：
During major metrological events, such as typhoons, a wind turbine will frequently cutout and re-cutin as wind speed fluctuates around the cutout speed. Repeated cutouts can undermine the reliability and the safety of a wind turbine. A dead band of wind speed between cutout and re-cutin speeds can be utilized to prevent frequent cutouts. Although a dead band of wind speed is helpful, it is not efficient because wind speed fluctuates and varies during the occurrence of a typhoon. This paper proposes a combined dead band of wind speed and time to control re-cutins of wind turbines and prevent repeated cutouts. Numerical simulations completed using onsite wind data from a potential wind Farm in Hong Kong indicate that the number of cutouts of a wind turbine has the potential to be reduced by 65% with the proposed approach.
作者机构：
[李志强; 苏盛; Zeng, Xiangjun] Hunan Province Key Laboratory of Smart Grids Operation and Control, Changsha University of Science and Technology, Changsha;410004, China;[王冬青] NARI Group Corporation, State Grid Electrical Power Research Institute (Beijing), Beijing;102220, China;[何飞跃] China Institute of Water Resources and Hydropower Research, Beijing
通讯机构：
[Su, S.] H;Hunan Province Key Laboratory of Smart Grids Operation and Control, China
