内蒙古电力技术 2012年第30卷第2期 INNER MONGOLIA ELECTRIC POWER 25 继电保护整定计算中光伏发电站阻抗 的计算方法研究 侯瑞鹏,杨明玉,李丽,周庆捷2 (1.华北电力大学,河北保定071003;2.北京中恒博瑞数字电力科技有限公司,北京100096) 摘要:在光伏发电站接入配电网后,为方便配电网继电保护的整定计算,借鉴动态等值阻 抗的建模方法,将光伏发电站表示为戴维南等效电路,即一个恒定的电压源和其等值阻抗串 联的形式,计算光伏发电站的最小正序等值阻抗.并且在参考日照强度S=1000W/m2、参考电 池温度T=70℃条件下进行4组实验,对不同类型的光伏电池进行实测,与该数学模型的计算 结果进行对比.结果表明,采用该模型的计算误差在5%以内,能够满足工程中继电保护整定 计算的需要,验证了该计算方法的实用性. 关键词:光伏发电;配电网;继电保护;整定计算;数学模型;等值阻抗 文献标志码:A 文章编号:1008-6218(2012)02-0025-04 Impedance Calculation Method of Photovoltaic Power Station in Relay Setting Calculation Hou Ruipeng Yang Mingyu' LiLi? Zhou Qingjie2 (1.North China Electric Power University Hebei Baoding 071003; 2.Beijing Join Bright Digital Power Technology Limited Company Beijing 100096) Abstract:After photovoltaic station connected to distribution network for convenience of distribution grid relay protection setting calculation use dynamic equivalent impedance modeling method to express photovoltaic power station as the Thevenin's theorem that is to calculate the minimum positive sequence impedance of photovoltaic power stationwith a constant voltage source and its equivalent impedance in series form.Four sets of experiments are carried out under referen...
关键词:保护整定单;继电保护;工作流技术 Abstract;For a long time, the manual management mode based on paper medium is widely used for the traditional manage- ment of the setting card of protective relaying. The workload required is huge, and a lot of otker problems exist under this kind of work mode. With the rapid development of power grid nowadays, the seting card management work such bees even har- der and much plicated. The automation of seting card management is realized through puter network by the proposed system, so the work efficiency is greatly raised. The system introduced has a higher application value. Key words:setting card of protective relaying; protective relaying; workflow technology 中图分类号:TM77文献标志码:A文章编号:1003-6954(2010)05-0031-04
作效率,使得各部门不同人员可以在一个统一的集成 0引言环境下完成各种管理工作。
关键词:固定串联补偿装置;保护配置;整定原则;人工单相接地试验
Analysis on theProtectionSettingCalculationfor1 oookV UHVFixed Series CompensationDevice LI Dongmin, ZHANG Peng, XIE Tao, HE Yanlong (State Grid Maintenance Company of Shan’xi, Changzhi 046603,China) Abstract: In this paper, the protection disposition situation of UHV fixed series pensation device is introduced based on the extension project of Changzhi via Nanyang to Jingmen UHV AC demonstration project,the protection setting calculation principle of the fixed series pensation device is analyzed and discussed.Finally, the correctness of the principle is verified by the site actual test result of artificial Keywords: fixed series pensation device; protection disposition; setting principle; artificial single phase grounding test
0引言程扩建工程串补设备保护应用的基础上²,探讨特高
压串补保护配置和整定计算原则,希望能够为后续 特高压串联补偿技术的应用对增强同步电网特高压串补装置的保护整定计算提供参考和依据。
电气控制 罗风立:电缆线路电流速断保护原理及整定计算 中图分类号:TQ172.6 文献标志码:B 文章编号:1007-0389(2017)03-58-04【D0I】10.13697j.cnki.32-1449/tu.2017.03.024 电缆线路电流速断保护原理及整定计算 罗风立(中信重工工程技术有限责任公司河南洛阳471039) 摘要:本文就工厂企业中常见的6kV及10kV电缆线路保护误动原因进行分析,以电流速断保护理论为依据,阐述了保护误 动的原因,并结合实例说明保护定值计算中应注意的问题,对电气设计及运行人员在实际的保护配置和整定计算中具有借鉴 意义. 关键词:线路保护;瞬时电流速断;限时电流速断;容量;供电;配电网络 Principle and setting calculation of current quick breaking protection for cable line Luo Fengli(CITIC Heavy Engineering Technology Co. Ltd.Luoyang 471039 China) Abstract:In this paper the protection maloperation of mon 6 kV and 10 kV cable line protection malfunction is analysed and ac- cording to current quick break protection theory the reason of misoperation is expounded.And bined with examples the problems that we should pay attention to in calculation of protetion setting value are explained which can be used as a reference for the electrical design and operation personnel in the actual protection configuration and setting calculation. Key words:line protection;instantaneous current quick break;limited current quick break;capacity;power supply:distribution network 0前言 2线路保护原理 6kV及10kV电缆线路是现代工厂企业主要的 2.1微机型线路保护装置中的保护配置 电能输送方式,其特点是输送距离短,回路数多,线 目前,在各电力设备上,微机型保护装...
第38卷第13期 电力系统保护与控制 Vol.38 No.13 2010年7月1日 Power System Protection and Control Jul.1 2010 电动机磁平衡式差动保护的整定计算 李斌,范瑞卿,贺家李 (天津大学电力系统仿真控制教育部重点实验室,天津300072) 摘要:传统纵联差动受电流互感器饱和特性的影响,实际应用中可能出现误动的情况.在与传统纵联差动保护相比较的基础 上,分析研究了电动机磁平衡式差动保护的工作原理及性能特征.通过对电动机正常运行、起动、以及区内外故障的分析, 给出了磁平衡式差动保护的整定原则.研究表明磁平街式差动保护能够大大提高电动机保护的灵敏性和可靠性. 关键词:电动机;纵联差动保护;磁平衡式差动保护;电流互感器;中性点不接地系统 Setting calculation of magnetic balanced differential protection of motor LI Bin FAN Rui-qing HE Jia-li (Key Laboratory of Power System Simulation and Control of Ministry of Education Tianjin University Tianjin 300072 China) Abstract:Affected by saturation characteristics of current transformer traditional differential protection may mis-operate sometimes. Based on the analysis of traditional differential protection this paper introduces a novel magnetic balanced differential protection. According to the investigation of normal operation start and external or internal fault for motor the paper researches the performance of magnetic balanced differential protection.Furthermore the setting principle is proposed.Theoretical research and industrial application show that magnetic balanced differential protection can improve sensitivity and relia...
研究与开发 PESEARCH AND DEVELOPMENT 铁路 计算机应用 第21卷第9期 RALWAY COMPUTER APPLICATION Vol.21 No.9 文章编号:1005-8451(2012)09-0018-03 牵引供电系统继电保护整定 计算软件的开发 李良威,邓云川,林宗良 (中铁二院工程集团有限责任公司电化院,成都610031) 摘要:本文研究并开发出一套牵引供电系统继电保护整定计算软件.在不同系统运行方 式、不同牵引变压器接线形式、不同牵引网供电方式和不同保护配置方案算法的基础上,结合 各铁路局对继电保护的运营要求以及各设备厂商的设备装置算法的区别,使用VC与面向对 象编程技术,缩短了系统开发周期,提高了工程分析计算的效率.软件的开发为牵引供电系统 的设计提供了技术支持. 关键词:牵引供电;VC;继电保护;整定计算 中图分类号:U223 文献标识码:A Development of setting calculation software for relay protection of Traction Power Supply System LI Liang-wei DENG Yun-chuan LIN Zong-liang Electrification Design Institute China Railway Eryuan Engineering Group Co.LTP. Chengdu 610031 China) Abstract:In this paper it was introduced the setting calculation software of the relay protection which was based on the analysis of the running mode for diverse system traction transformer connection form the feeding mode of overhead contact line system and protection configuration scheme at the same time it was also integrated the railway administration's requirements to the relay protection as well as the difference of device algorithm among different equipment manufacturers.Through using the VCprogram language and the object-oriented programmin...
第42卷第10期 电力系统保护与控制 Vol.42 No.10 2014年5月16日 Power System Protection and Control May16 2014 煤矿井下高压电网过流保护整定计算方法的改进研究 马星河1,李林蔚,李自强2,韩鹏举3 (1.河南理工大学电气工程与自动化学院,河南焦作454150;2.许继电气股份有限公司,河南许昌461000; 3.中国平煤神马集团安全监察局,河南平顶山467000) 摘要:为了提高煤矿过流保护的可靠性,针对各级变电所6kV出线开关,给出了一种改进的过流保护整定计算方法.分析 了传统方法的不足,并详细介绍了新方法的整定计算过程.新方法中用线路载流量对定时过流与过负荷保护进行了整定,并 介绍了瞬时速断保护是否设置的判定方法.以定时过流保护为例,介绍了灵敏度不合要求时的处理方法.最后以河南大有能 源某煤矿局部供电系统为例进行了计算论证,并进行了分析.结果表明,新方法是有效和实用的,能够保证过流保护装置可 靠动作,从而提高过流保护的可靠性. 关键词:过流保护;改进的;整定计算;新方法;载流量;灵敏度;有效 Improvement and research on the setting calculation method of overcurrent protection of the underground high-voltage distribution network of coal mine MA Xing-he' LI Lin-wei' LI Zi-qiang? HAN Peng-ju (1.Dept of Electrical Engineering and Automation Henan Polytechnic University Jiaozuo 454150 China;2.XJ Electric Co. Ltd Xuchang 461000 China;3.Safety Supervision Bureau of China Pingmei Shenma Group Pingdingshan 467000 China) Abstract:In order to improve the reliability of overcurrent protection of coal mine for 6 kV outlet switch of substation of all levels this paper gives an improved setting calculation method of overcurrent protection.It analyses the shortings of traditional method and introduces...
62 煤矿机电 2015年第4期 周晓东,丰胜成,郭志强,杨晋伟.煤矿井下高低压开关整定值计算与分析[].煤矿机电,2015(4):62-65. doi:10.16545/j.cnki.cmet.2015.04.018 煤矿井下高低压开关整定值计算与分析 周晓东,丰胜成,郭志强,杨晋伟 (潞安集团李村煤矿,山西长治046600) 摘要:煤矿供电为一类负荷,供电的可靠稳定对煤矿安全至关重要.目前国家对煤矿开关整定 计算没有统一标准,各个煤矿整定都不尽相同,而按电力系统整定方式整定对煤矿供电又并不适 用.对此根据多年的经验,对井下高低压开关整定值进行了分析计算,所得出的整定值在李村煤矿 应用后满足了矿井的供电要求. 关键词:电流保护;电压保护;漏电保护;非电量保护 中图分类号:TM773 文献标识码:B文章编号:1001-0874(2015)04-0062-04 Calculation and Analysis of High/Low Voltage Switch Setting Value at Underground Mine Zhou Xiaodong Feng Shengcheng Guo Zhigiang Yang Jinwei Licun Mine Lu'an Group Lu'an 046600 China) Abstract:The power supply in coal mine is the first class load.The reliability and stable of the power supply plays an important role for coal mine safety.There is no national standard for the calculation of mine switch setting and the setting calculation is different in each coal mine.However the setting method in power system are not suitable for the coal mine power supply.According to the experience in many years calculates and analyzes the setting value of high/low voltage switch at underground mine then gets the setting value.Applies the value in Licun mine it proves that the method can satisfy the power supply requirements. Keywords:current protection;voltage protection;leakage protection;non-electrical protection 整定值设置不当的情况,导致有时保护出现误动和 0引言 拒动情况,影响到矿井的安全生产.本文从实际应 煤矿井下供电主要由高压隔爆开关、低压馈电 用出发,分析了如何正确计算开关整定值,以供研究 开关、电磁启动器、电缆等组成,由于煤矿环境恶劣, 探讨. 井下开关经常发生短路、过负荷、漏电等故障,因此 1电流保护 《煤矿安全规程》中规定井下开关应装设有短路、过 负荷、漏电保护等,这些保护对矿井安全供电起...