- 个人中心
- 退出登录
浏览全部资源
扫码关注微信
- Literature
- Latest Issue
- Archive
- Online First
Research and Prospect of Data-driven Based Disaster Evolution and Prevention of Power System
- Automation of Electric Power Systems Vol. 44, Issue 9, Pages: 1-11(2020)
- 作者机构：
1. 华北电力大学经济与管理学院，北京市 102206
2. 新能源电力与低碳发展研究北京市重点实验室(华北电力大学)，北京市 102206
3. 华北水利水电大学管理与经济学院，河南省 郑州市 450045
- 作者简介：
- 基金信息：National Natural Science Foundation of China;State Grid Corporation of China
DOI：10.7500/AEPS20190226004
CLC：Received：26 February 2019，
Revised：2019-09-04，
Published Online：17 February 2020，
Published：10 May 2020
- 稿件说明：
移动端阅览
李存斌,计丽妍,赵德福等.基于数据驱动的电力系统灾变演化及防控研究与展望[J].电力系统自动化,2020,44(9):1-11.
LI Cunbin,JI Liyan,ZHAO Defu,et al.Research and Prospect of Data-driven Based Disaster Evolution and Prevention of Power System[J].Automation of Electric Power Systems,2020,44(9):1-11.
李存斌,计丽妍,赵德福等.基于数据驱动的电力系统灾变演化及防控研究与展望[J].电力系统自动化,2020,44(9):1-11. DOI： 10.7500/AEPS20190226004.
LI Cunbin,JI Liyan,ZHAO Defu,et al.Research and Prospect of Data-driven Based Disaster Evolution and Prevention of Power System[J].Automation of Electric Power Systems,2020,44(9):1-11. DOI： 10.7500/AEPS20190226004.
摘要
随着电力信息物理融合的深入，电力系统呈现出结构复杂化、外部致灾因子易发等发展趋势。在对电力系统灾变研究现状分析的基础上，针对电力系统灾变演化及防控问题，提出电力系统“孕灾-传灾-报灾-防灾”灾变过程理论。首先，基于大数据驱动分析致灾因子与电力系统孕灾机理及其耦合关系；其次，研究致灾因子的孕育、演化、临界态、涌现与传递机理；再次，基于对外部致灾因子的物联网实时监测技术研究致灾因子及灾变的评估和预警机制；然后，基于态势感知技术分析灾变的主动防控策略，从灾变防控手段库构建、灾变发展趋势感知预测、防控手段智能决策以及灵敏度评估等方面进行分析。最后，提出应用于电力系统灾变防控的大数据分析流程框架。
Abstract
With the deep integration of cyber-physical system
power system presents the development trend that structure is complicated and external hazard factors are easy to bring forth. Based on the analysis of the current research of power system disaster
this paper proposes the theory of power system disaster process—“disaster pregnancy-disaster transmission-disaster reporting-disaster prevention” for the disaster evolution and prevention of power system. Firstly
the hazard factors and disaster-generation mechanism of power system and their coupling relationship are analyzed based on the big data-driven. Secondly
the pregnancy
evolution
critical state
emergence and transmission mechanism of hazard factors are studied. Thirdly
based on the Internet of Things (IoT) real-time monitoring technology for external hazard factors
the assessment and early warning mechanism of hazard factors and disasters are studied. Then
based on situational awareness technology
active disaster prevention and control strategies are analyzed from the aspects of disaster prevention and control strategy database construction
perception prediction of the disaster development trend
intelligent decision-making of prevention and control strategies
and sensitivity evaluation. Finally
a big data analysis framework for power system disaster prevention and control is proposed.
关键词
Keywords
references
MALLA N , POUDEL S , KARKI N R , et al . Resilience of electrical power delivery system in response to natural disasters [C]// 7th International Conference on Power Systems (ICPS), December 21-23 , 2017 , Pune , India .
MENSAH A F , DUENAS-OSORIO L . Outage predictions of electric power systems under hurricane winds by Bayesian networks [C]// International Conference on Probabilistic Methods Applied to Power Systems (PMAPS), July 7-10 , 2014 , Durham , UK .
ARAB A , KHODAEI A , HAN Z , et al . Proactive recovery of electric power assets for resiliency enhancement [J]. IEEE Access , 2015 , 3 : 99 - 109 .
MOHAGHEGHI S , JAVANBAKHT P . Power grid and natural disasters: a framework for vulnerability assessment [C]// Seventh Annual IEEE Green Technologies Conference, April 15-17 , 2015 , New Orleans , USA .
ARJOMANDI-NEZHAD A , FOTUHI-FIRUZABAD M , MAZAHERI H , et al . Developing a MILP method for distribution system reconfiguration after natural disasters [C]// Electrical Power Distribution Conference (EPDC), May 9-10 , 2018 , Tehran , Iran .
田超 , 沈沉 , 孙英云 . 电力应急管理中的综合预测预警技术 [J]. 清华大学学报(自然科学版) , 2009 , 49 ( 4 ): 481 - 484 .
TIAN Chao , SHEN Chen , SUN Yingyun . Integrated forecasting and warning technologies for electrical power system emergency management [J]. Journal of Tsinghua University (Science and Technology) , 2009 , 49 ( 4 ): 481 - 484 .
谢强 , 李杰 . 电力系统自然灾害的现状与对策 [J]. 自然灾害学报 , 2006 , 15 ( 4 ): 126 - 131 .
XIE Qiang , LI Jie . Current situation of natural disaster in electric power system and countermeasures [J]. Journal of Natural Disasters , 2006 , 15 ( 4 ): 126 - 131 .
薛禹胜 , 吴勇军 , 谢云云 , 等 . 复合自然灾害下的电力系统稳定性分析 [J]. 电力系统自动化 , 2016 , 40 ( 4 ): 10 - 18 .
XUE Yusheng , WU Yongjun , XIE Yunyun , et al . Power system stability analysis for intercurrent natural disasters [J]. Automation of Electric Power Systems , 2016 , 40 ( 4 ): 10 - 18 .
薛禹胜 , 吴勇军 , 谢云云 , 等 . 停电防御框架向自然灾害预警的拓展 [J]. 电力系统自动化 , 2013 , 37 ( 16 ): 18 - 26 .
XUE Yusheng , WU Yongjun , XIE Yunyun , et al . Extension of blackout defense scheme to natural disasters early-warning [J]. Automation of Electric Power Systems , 2013 , 37 ( 16 ): 18 - 26 .
田世明 , 陈希 , 朱朝阳 , 等 . 电力应急管理理论与技术对策 [J]. 电网技术 , 2007 , 31 ( 24 ): 22 - 27 .
TIAN Shiming , CHEN Xi , ZHU Chaoyang , et al . Theory of electric power emergency management and its technological countermeasures [J]. Power System Technology , 2007 , 31 ( 24 ): 22 - 27 .
周景 . 电网自然灾害预警管理模型及决策支持系统研究 [D]. 北京 ： 华北电力大学 , 2016 .
ZHOU Jing . Research on early-warning management model and decision support system for natural disaster in power grid [D]. Beijing : North China Electric Power University , 2016 .
李存斌 , 李小鹏 , 田世明 , 等 . 能源互联网电力信息深度融合风险传递:挑战与展望 [J]. 电力系统自动化 ， 2017 , 41 ( 11 )： 17 - 25 .
LI Cunbin , LI Xiaopeng , TIAN Shiming , et al . Challenges and prospects of risk transmission in deep fusion of electric power and information for Energy Internet [J]. Automation of Electric Power Systems , 2017 , 41 ( 11 ): 17 - 25 .
李小鹏 , 李存斌 , 刘定 , 等 . 基于DEMATEL-ISM的电力CPS事故构模分析 [J]. 华北电力大学学报(自然科学版) , 2018 , 45 ( 4 ): 67 - 77 .
LI Xiaopeng , LI Cunbin , LIU Ding , et al . Power CPS fault modeling analysis based on DEMATEL-ISM [J]. Journal of North China Electric Power University (Natural Science Edition) , 2018 , 45 ( 4 ): 67 - 77 .
唐斯庆 , 张弥 , 李建设 , 等 . 海南电网“9·26”大面积停电事故的分析与总结 [J]. 电力系统自动化 , 2006 , 30 ( 1 ): 1 - 7 .
TANG Siqing , ZHANG Mi , LI Jianshe , et al . Review of blackout in Hainan on September 26th—causes and recommendations [J]. Automation of Electric Power Systems , 2006 , 30 ( 1 ): 1 - 7 .
于永清 , 李光范 , 李鹏 , 等 . 四川电网汶川地震电力设施受灾调研分析 [J]. 电网技术 , 2008 , 32 ( 11 ): 5 - 10 .
YU Yongqing , LI Guangfan , LI Peng , et al . Investigation and analysis of electric equipment damage in Sichuan power grid caused by Wenchuan earthquake [J]. Power System Technology , 2008 , 32 ( 11 ): 5 - 10 .
陆佳政 , 蒋正龙 , 雷红才 , 等 . 湖南电网2008年冰灾事故分析 [J]. 电力系统自动化 , 2008 , 32 ( 11 ): 16 - 19 .
LU Jiazheng , JIANG Zhenglong , LEI Hongcai , et al . Analysis of Hunan power grid ice disaster accident in 2008 [J]. Automation of Electric Power Systems , 2008 , 32 ( 11 ): 16 - 19 .
胡湘 , 陆佳政 , 曾祥君 , 等 . 输电线路山火跳闸原因分析及其防治措施探讨 [J]. 电力科学与技术学报 , 2010 , 25 ( 2 ): 73 - 78 .
HU Xiang , LU Jiazheng , ZENG Xiangjun , et al . Analysis on transmission line trip caused by mountain fire and discussion on tripping preventing measures [J]. Journal of Electric Power Science and Technology , 2010 , 25 ( 2 ): 73 - 78 .
林伟芳 , 孙华东 , 汤涌 , 等 . 巴西“11·10”大停电事故分析及启示 [J]. 电力系统自动化 , 2010 , 34 ( 7 ): 1 - 5 .
LIN Weifang , SUN Huadong , TANG Yong , et al . Analysis and lessons of the blackout in Brazil power grid on November 10, 2009 [J]. Automation of Electric Power Systems , 2010 , 34 ( 7 ): 1 - 5 .
MIMURA N , YASUHARA K , KAWAGOE S , et al . Damage from the great east Japan earthquake and tsunami—a quick report [J]. Mitigation and Adaptation Strategies for Global Change , 2011 , 16 ( 7 ): 803 - 818 .
曾鸣 , 李娜 , 董军 , 等 . 基于大安全观的电网运行管理关键技术——关于印度大停电的思考 [J]. 电力系统自动化 , 2012 , 36 ( 16 ): 9 - 13 .
ZENG Ming , LI Na , DONG Jun , et al . Key technologies of power grid operation and management based on philosophy of general security—a view of blackout in India [J]. Automation of Electric Power Systems , 2012 , 36 ( 16 ): 9 - 13 .
李彦斌 , 韩颖 , 张嵘 , 等 . 气象因素对电力安全事故影响的模型 [J]. 电网技术 , 2013 , 37 ( 6 ): 1683 - 1687 .
LI Yanbin , HAN Ying , ZHANG Rong , et al . Research on impact model of meteorological factors on the power accidents [J]. Power System Technology , 2013 , 37 ( 6 ): 1683 - 1687 .
童晓阳 , 王晓茹 . 乌克兰停电事件引起的网络攻击与电网信息安全防范思考 [J]. 电力系统自动化 , 2016 , 40 ( 7 ): 144 - 148 .
TONG Xiaoyang , WANG Xiaoru . Inference and countermeasure presupposition of network attack in incident on Ukrainian power grid [J]. Automation of Electric Power Systems , 2016 , 40 ( 7 ): 144 - 148 .
盐城龙卷风灾造成多条电路跳闸电力部门紧张抢修中 [EB/OL].[ 2018-12-26 ]. http://www.chinanews.com/sh/2016/06-23/7915459.shtMl http://www.chinanews.com/sh/2016/06-23/7915459.shtMl .
Tornado disaster in Yancheng caused multiple circuits to trip [EB/OL]. [ 2018-12-26 ]. http://www.chinanews.com/sh/2016/06-23/7915459.shtMl http://www.chinanews.com/sh/2016/06-23/7915459.shtMl ．
曾辉 , 孙峰 , 李铁 , 等 . 澳大利亚“9·28”大停电事故分析及对中国启示 [J]. 电力系统自动化 , 2017 , 41 ( 13 ): 1 - 6 .
ZENG Hui , SUN Feng , LI Tie , et al . Analysis of “9·28” blackout in South Australia and its enlightenment to China [J]. Automation of Electric Power Systems , 2017 , 41 ( 13 ): 1 - 6 .
易俊 , 卜广全 , 郭强 , 等 . 巴西“3·21”大停电事故分析及对中国电网的启示 [J]. 电力系统自动化 , 2019 , 43 ( 2 ): 1 - 6 .
YI Jun , BU Guangquan , GUO Qiang , et al . Analysis on blackout in Brazilian power grid on March 21, 2018 and its enlightenment to power grid in China [J]. Automation of Electric Power Systems , 2019 , 43 ( 2 ): 1 - 6 .
方勇杰 . 英国“8·9”停电事故对频率稳定控制技术的启示 [J]. 电力系统自动化 , 2019 , 43 ( 24 ): 1 - 5 .
FANG Yongjie . Reflections on frequency stability control technology based on the blackout event of 9 August 2019 in U.K .[J]. Automation of Electric Power Systems , 2019 , 43 ( 24 ): 1 - 5 .
薛禹胜 , 赖业宁 . 大能源思维与大数据思维的融合:(二)应用及探索 [J]. 电力系统自动化 , 2016 , 40 ( 8 ): 1 - 13 .
XUE Yusheng , LAI Yening . Integration of macro energy thinking and big data thinking： Part two applications and explorations [J]. Automation of Electric Power Systems , 2016 , 40 ( 8 ): 1 - 13 .
熊小伏 , 王尉军 , 于洋 , 等 . 多气象因素组合的输电线路风险分析 [J]. 电力系统及其自动化学报 , 2011 , 23 ( 6 ): 11 - 15 .
XIONG Xiaofu , WANG Weijun , YU Yang , et al . Risk analysis method for transmission line combining of various meteorological factors [J]. Proceedings of the CSU-EPSA , 2011 , 23 ( 6 ): 11 - 15 .
方丽华 , 熊小伏 , 方嵩 , 等 . 基于电网故障与气象因果关联分析的系统风险控制决策 [J]. 电力系统保护与控制 , 2014 , 42 ( 17 ): 113 - 119 .
FANG Lihua , XIONG Xiaofu , FANG Song , et al . Power system risk control decision based on cause and effect correlation analysis of fault and meteorology [J]. Power System Protection and Control , 2014 , 42 ( 17 ): 113 - 119 .
段涛 , 罗毅 , 施琳 , 等 . 计及气象因素的输电线路故障概率的实时评估模型 [J]. 电力系统保护与控制 , 2013 , 41 ( 15 ): 59 - 67 .
DUAN Tao , LUO Yi , SHI Lin , et al . A real-time fault probability evaluation model of transmission line considering meteorological factors [J]. Power System Protection and Control , 2013 , 41 ( 15 ): 59 - 67 .
吴勇军 , 薛禹胜 , 陆佳政 , 等 . 山火灾害对电网故障率的时空影响 [J]. 电力系统自动化 , 2016 , 40 ( 3 ): 14 - 20 .
WU Yongjun , XUE Yusheng , LU Jiazheng , et al . Space-time impact of forest fire on power grid fault probability [J]. Automation of Electric Power Systems , 2016 , 40 ( 3 ): 14 - 20 .
阳林 , 郝艳捧 , 黎卫国 , 等 . 架空输电线路在线监测覆冰力学计算模型 [J]. 中国电机工程学报 , 2010 , 30 ( 19 ): 100 - 105 .
YANG Lin , HAO Yanpeng , LI Weiguo , et al . A mechanical calculation model for on-line icing-monitoring system of overhead transmission lines [J]. Proceedings of the CSEE , 2010 , 30 ( 19 ): 100 - 105 .
潘斌 , 张勇军 , 黄慧 . 多因子电网冰灾风险评估建模 [J]. 电网技术 , 2012 , 36 ( 5 ): 102 - 106 .
PAN Bin , ZHANG Yongjun , HUANG Hui . Modeling for multi-factor risk assessment on ice disaster of power system [J]. Power System Technology , 2012 , 36 ( 5 ): 102 - 106 .
孙荣富 , 程林 , 孙元章 . 基于恶劣气候条件的停运率建模及电网充裕度评估 [J]. 电力系统自动化 , 2009 , 33 ( 13 ): 7 - 12 .
SUN Rongfu , CHENG Lin , SUN Yuanzhang . An outage rate model and system adequacy assessment based on adverse weather conditions [J]. Automation of Electric Power Systems , 2009 , 33 ( 13 ): 7 - 12 .
郭庆来 , 辛蜀骏 , 王剑辉 , 等 . 由乌克兰停电事件看信息能源系统综合安全评估 [J]. 电力系统自动化 , 2016 , 40 ( 5 ): 145 - 147 .
GUO Qinglai , XIN Shujun , WANG Jianhui , et al . Comprehensive security assessment for a cyber physical energy system: a lesson from Ukraine’s blackout [J]. Automation of Electric Power Systems , 2016 , 40 ( 5 ): 145 - 147 .
赵俊华 , 梁高琪 , 文福拴 , 等 . 乌克兰事件的启示:防范针对电网的虚假数据注入攻击 [J]. 电力系统自动化 , 2016 , 40 ( 7 ): 149 - 151 .
ZHAO Junhua , LIANG Gaoqi , WEN Fushuan , et al . Lessons learnt from Ukrainian blackout: protecting power grids against false data injection attacks [J]. Automation of Electric Power Systems , 2016 , 40 ( 7 ): 149 - 151 .
刘念 , 余星火 , 张建华 . 网络协同攻击:乌克兰停电事件的推演与启示 [J]. 电力系统自动化 , 2016 , 40 ( 6 ): 144 - 147 .
LIU Nian , YU Xinghuo , ZHANG Jianhua . Coordinated cyber-attack: inference and thinking of incident on Ukrainian power grid [J]. Automation of Electric Power Systems , 2016 , 40 ( 6 ): 144 - 147 .
LIU R , VELLAITHURAI C , BISWAS S S , et al . Analyzing the cyber-physical impact of cyber events on the power grid [J]. IEEE Transactions on Smart Grid , 2015 , 6 ( 5 ): 2444 - 2453 .
SOLTAN S , ZUSSMAN G . EXPOSE the line failures following a cyber-physical attack on the power grid [J]. IEEE Transactions on Control of Network Systems , 2019 , 6 ( 1 ): 451 - 461 .
ASHOK A , GOVINDARASU M , WANG J H . Cyber-physical attack-resilient wide-area monitoring, protection, and control for the power grid [J]. Proceedings of the IEEE , 2017 , 105 ( 7 ): 1389 - 1407 .
LIU X , LI Z Y , SHUAI Z K , et al . Cyber attacks against the economic operation of power systems: a fast solution [J]. IEEE Transactions on Smart Grid , 2017 , 8 ( 2 ): 1023 - 1025 .
汤奕 , 陈倩 , 李梦雅 , 等 . 电力信息物理融合系统环境中的网络攻击研究综述 [J]. 电力系统自动化 , 2016 , 40 ( 17 ): 59 - 69 .
TANG Yi , CHEN Qian , LI Mengya , et al . Overview on cyber-attacks against cyber physical power system [J]. Automation of Electric Power Systems , 2016 , 40 ( 17 ): 59 - 69 .
汤奕 , 王琦 , 倪明 , 等 . 电力信息物理融合系统中的网络攻击分析 [J]. 电力系统自动化 , 2016 , 40 ( 6 ): 148 - 151 .
TANG Yi , WANG Qi , NI Ming , et al . Analysis of cyber attacks in cyber physical power system [J]. Automation of Electric Power Systems , 2016 , 40 ( 6 ): 148 - 151 .
薛禹胜 , 费圣英 , 卜凡强 . 极端外部灾害中的停电防御系统构思:(一)新的挑战与反思 [J]. 电力系统自动化 , 2008 , 32 ( 9 ): 1 - 6 .
XUE Yusheng , FEI Shengying , BU Fanqiang . Upgrading the blackout defense scheme against extreme disasters: Part Ⅰ new challenges and reflection [J]. Automation of Electric Power Systems , 2008 , 32 ( 9 ): 1 - 6 .
薛禹胜 , 费圣英 , 卜凡强 . 极端外部灾害中的停电防御系统构思:(二)任务与展望 [J]. 电力系统自动化 , 2008 , 32 ( 10 ): 1 - 5 .
XUE Yusheng , FEI Shengying , BU Fanqiang . Upgrading the blackout defense scheme against extreme disasters: Part Ⅱ tasks and prospects [J]. Automation of Electric Power Systems , 2008 , 32 ( 10 ): 1 - 5 .
谢云云 , 薛禹胜 , 文福拴 , 等 . 冰灾对输电线故障率影响的时空评估 [J]. 电力系统自动化 , 2013 , 37 ( 18 ): 32 - 41 .
XIE Yunyun , XUE Yusheng , WEN Fushuan , et al . Space-time evaluation for impact of ice disaster on transmission line fault probability [J]. Automation of Electric Power Systems , 2013 , 37 ( 18 ): 32 - 41 .
谢云云 , 薛禹胜 , 王昊昊 , 等 . 电网雷击故障概率的时空在线预警 [J]. 电力系统自动化 , 2013 , 37 ( 17 ): 44 - 51 .
XIE Yunyun , XUE Yusheng , WANG Haohao , et al . Space-time early-warning of power grid fault probability by lightning [J]. Automation of Electric Power Systems , 2013 , 37 ( 17 ): 44 - 51 .
杨成月 . 基于物联网与空间信息技术的电网应急指挥系统 [J]. 电网技术 , 2013 , 37 ( 6 ): 1632 - 1638 .
YANG Chengyue . Power grid emergency command system based on Internet of Things and spatial information technologies [J]. Power System Technology , 2013 , 37 ( 6 ): 1632 - 1638 .
文云峰 , 崔建磊 , 张金江 , 等 . 面向调度运行的电网安全风险管理控制系统:(一)概念及架构与功能设计 [J]. 电力系统自动化 , 2013 , 37 ( 9 ): 66 - 73 .
WEN Yunfeng , CUI Jianlei , ZHANG Jinjiang , et al . Design of a security risk management system for power system dispatching and operation: Part one concepts and design of architecture and function [J]. Automation of Electric Power Systems , 2013 , 37 ( 9 ): 66 - 73 .
方嵩 , 方丽华 , 熊小伏 , 等 . 基于有效决策界的电网台风灾害预警方法 [J]. 电力系统保护与控制 , 2014 , 42 ( 18 ): 83 - 88 .
FANG Song , FANG Lihua , XIONG Xiaofu , et al . A typhoon disaster early warning method for power grid based on effective decision boundary [J]. Power System Protection and Control , 2014 , 42 ( 18 ): 83 - 88 .
王昊昊 , 徐泰山 , 李碧君 , 等 . 自适应自然环境的电网安全稳定协调防御系统的应用设计 [J]. 电力系统自动化 , 2014 , 38 ( 9 ): 143 - 151 .
WANG Haohao , XU Taishan , LI Bijun , et al . Design of coordinated prevention system in self-adapting natural environment for safety and stability of power grid [J]. Automation of Electric Power Systems , 2014 , 38 ( 9 ): 143 - 151 .
王逸飞 , 张行 , 何迪 , 等 . 基于大数据平台的电网防灾调度系统功能设计与系统架构 [J]. 电网技术 , 2016 , 40 ( 10 ): 3213 - 3219 .
WANG Yifei , ZHANG Hang , HE Di , et al . Function design and system architecture of disaster prevention and dispatch system in power system based on big data platform [J]. Power System Technology , 2016 , 40 ( 10 ): 3213 - 3219 .
薛禹胜 , 赖业宁 . 大能源思维与大数据思维的融合:(一)大数据与电力大数据 [J]. 电力系统自动化 , 2016 , 40 ( 1 ): 1 - 8 .
XUE Yusheng , LAI Yening . Integration of macro energy thinking and big data thinking： Part one big data and power big data [J]. Automation of Electric Power Systems , 2016 , 40 ( 1 ): 1 - 8 .
0
Views
0
下载量
11
CSCD
- Meta-XMLDownload
- BibTeXDownload
- EndnoteDownload
- RefMan Download
- NoteExpressDownload
- NoteFirstDownload
Publicity Resources
Related Articles
Related Author
Related Institution
- Postal code：310000
- Tel：13632102679
- Technical support is provided by Beijing Founder electronics co., LTD 京ICP备09064830号-19
京公网安备11010802024621 - It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
- Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.