资htrp://.oqvip. 第28卷/2008年第2期 湖南电力 经验与探讨 母线保护及其整定计算若千问题探讨 曾次玲1,曾勤2,谢培元1,李丽莎2 (1.湖南省电力公司调度通信局,湖南长沙410007;2.湖南省电力公司娄底电业局,湖南娄底417000) 摘要:比较了WMH-800 WMZ-41 RCS-915 BP-2B CSC-150 SGB750等 几种湖南电网在运的微机母线保护装置的原理和解决TA饱和等问题方面的不同方法, 详细分析了不同型号母线保护在整定计算方面的异同点和需要注意的细节问题. 关键词:继电保护;母线差动;整定计算 中图分类号:TM773文献标识码:A文章编号:1008-0198(2008)02-0041-05 Discussion on bus protection and its setting calculation ZENG Ci-ling' ZENG Qin? XIE Pei-yuan' LI Li-sha (1.Hunan Electric Power Company Dispatches and Communication Bureau Changsha 410007 China; 2.Loudi Electric Power Bureau Loudi 417000 China) Abstract:The principles adopted by several microputer based bus protection equipment in Hunan power grid and.their ways to settle TA saturation were pared.Same and different points and detail concems that should be pay attention in differ ent type bus setting calculation were thoroughly analyzed. Key words:relay protection;bus differential protection;setting calculation 1引言 2母线保护的基本原理介绍 目前,湖南220kV及以上电网继电保护装置2.1母线差动保护原理 中线路保护基本实现了微机化、双重化配置,元件 母线差动保护的动作原理是建立在基尔霍夫电 保护也正在向全面微机化过渡.湖南省母线保护主流定律的基础之上的.把母线视为一个节点,在正 要来自南瑞、南自、许继和四方四大厂家.截止常运行和外部故障时流入母线电流之和为,而内 2007年6月,南瑞的RCS系列(母差、失灵、充部短路时为总短路电流.这是理想的情况,实际 电)40套左右,南自的WMZ...
80 《电气开买》(2013.No.4) 文章编号:1004-289X(2013)04-0080-04 咸宁地区110kV微机主变保护整定 计算原则的优化实践 凌艳,刘杰 (湖北电网咸宁供电公司,湖北咸宁437100) 摘要:从咸宁电网实际情况出发,提出了110kV微机主变保护整定计算的简化原则和优化方案.为继电保护 工作者在整定计算环节中通过分析规程并结合保护特性研究简化计算方法提供了策略性的建议,对确保电网运 行安全可靠、减少误整定、提高工作效率具有实际意义. 关键词:变压器保护;110kV;整定计算;简化与优化 中图分类号:TM41 文献标识码:B Optimization and Predigesting of the Setting Calculation Principle of 110kV Microputer Protection in Xianning Area LING Yan LIU Jie (Hubei Power Grid Xianning Power Supply Co Xianning 437100 China) Abstract:According to the real conditions of Xianning Power Grid the calculation principles and the methods of solving some special problem in relay protection setting are introduced.Analyze and advance the optimization and predigesting of the setting calculation principle of 110kV microputer protection.It would be a strategic advice for the relay protection operators to predigest the calculation method passing through analysis of the regulations and the study of protection char- acteristic in the setting calculation teach.It takes practical meaning on insure power network operation on the safe side. reduce mistake calculation and boost work efficiency. Key words:protection of transformer 110kV setting cal...
关键词:整定计算;缓冲网;运行方式;带权电力网络;保护配合 Automatic generation of buffer subsystemfor setting calculation in large power system WANG Xiao-bo', WEN Jing-hua², LI Chong-zhan, LUO Mei-ling, SONG Wei, GONG Ren-min? (1. School of Electrical and Electronic Engineering, North China Electric Power University, Baoding 071003, China; 2. Ningxia Electric Power Dispatching and Control Centre, Yinchuan 750001, China; 3. Beijing Join Bright Digital Power Technology Limited Company, Beijing 100096, China) Abstract: It is time consuming to use the entire network to conduct setting calculation for local area. The way to narrow down the grid size for setting calculation bees an important subject.Based on the plex network theory, the weighted power network model is formed. The buffer subsystem for setting calculation consists of the coordination region and constraint region. After determining the scope of seting calculation, we include the adjacent branches of boundaries and its end nodes in the coordination region according to remote backup protection.Furthermore, the shortest electrical path is used to determine the minimum ring network of boundaries and coordination branches. Meanwhile the substation scope is determined by the self-impedance variation rate of boundary nodes. The constraint region consists of the smallest ring structures and substation scope. Under these, the depth first search and backtracking technique are applied to form the buffer subsystem automatically. Key words: seting calculation; buffer subsystem; operation mode; weight...
第39卷第17期 电力系统保护与控制 Vol.39 No.17 2011年9月1日 Power System Protection and Control Sept.1 2011 大电网分区整定中电流保护范围的计算 张云勇,吕飞鹏,樊昆博,陈新 (四川大学电气信息学院,四川成都610065) 摘要:将大电网分解成若干个相互之间无电磁联系的子系统.在子系统整定计算中引入联络线注入电流用以考虑子系统之问 相互影响;采用补偿法引入补偿电流模拟网络操作;通过在故障点注入电流来模拟短路故障,建立起分区整定的通用计算模 型.并且导出系统内故障节点电压表达式,论述了表达式中未知量的详细求解过程、在此基础上,推导出短路电流与发生短 路故障点的关系式,通过解方程,得出电流保护的范围,简化了计算过程.通过实际算例验证该方法的正确性和有效性. 关键词:电力系统;继电保护;分区整定;保护范围 Current protection calculation for zone-division setting in large power system ZHANG Yun-yong LǖFei-peng FAN Kun-bo CHEN Xin (School of Electrical Engineering and Information Sichuan University Chengdu 610065 China) Abstract:The large grid is deposed into several subsystems without electromagnetic connections among them.In the setting calculation of subsystem the tie line is installed and the current injected to reduce the interaction between subsystems;the pensation current is introduced by using pensation method to simulate network operations.A general calculation model of zone-division setting is built by injecting current at the point of fault to simulate short-circuit fault.And voltage expression of internal fault node is derived and the detailed solving process of unknown value is int...
第33卷第4期 四川电力技术 Vol.33.No.4 2010年8月 Sichuan Electric Power Technology Aug 2010 大容量10kV线路保护整定计算及配合 冯成铭,陈曦 (德阳电业局,四川德阳618000) 摘要:针对大容量10kV线路继电保护的整定计算中存在的用户故障容易顶跳变电站开关、线路瞬时故障跳闸后重 合闸不成功、线路无故障试送线路仍然不成功等特殊问题,通过保护方案的调整,避免上述现象的发生. 关键词:10kV线路;继电保护;整定计算 Abstract:There are some especial relay protection problems in 10 kV high capacity lines such as the fault of users'equip- ment causing the leapfrog trip of the switch in the substation the switch reclosing unsuccessfully after the instantaneous fault in the line and trying to send power unsuccessfully in trouble-free line.The setting calculation of relay protection is improved for 10 kV high -capacity line in order to avoid the above-mentioned phenomenon. Key words:10 kV high-capacity line;relay protection;setting calculation 中图分类号:TM772文献标志码:B文章编号:1003-6954(2010)04-0025-04 按躲过本线路末端最大三相短路电流整定,时限整定 0引言 为0s(保护装置只有固有动作时间无人为延时). 按照该原则整定,电流段保护范围伸入用户侧,导 德阳10kV配电线路结构复杂,有的是用户专 致变电站开关保护无选择性动作,T接用户故障将 线,只接一两个用户,类似于输电线路;有的呈放射 引起整条10kV线路跳闸,如图1中的A、B点发生 状,几十台甚至上百台变压器T接于同一10kV线路 故障.这是保证了继电保护的灵敏性而牺牲了选择 的各个分支上;有的线路短到几十米,有的线路长到 性,后果是造成了整条10kV线路全部中止了供电. 近10km;有的线路上配电变压器总容量很小,最大 (2)变电站10kV出线开关检修或故障跳闸后 不超过100kVA 有的线路上总容量却达到3~4万 送电不成功.经过检查,线路上确无故障,后经分析 kVA.德阳局大多数10...
西北水电2014年第2期 71 文章编号:1006—2610(2014)02—0071-04 大型水电厂厂高变保护配置及 整定计算相关问题研究 何璐,马力,石爽,路秀丽,何苗,王瀚 (中国水电顾问集团西北勘测设计研究院,西安710065) 摘要:近年来由于厂高变保护配置及整定计算不合理造成保护越级跳闸的情况均有发生.文章以鲁地拉水电站的 厂高变保护配置过程为例,就大型水电厂的厂高变保护配置及整定计算中的一些问题进行探讨. 关键调:厂用变;高压保护;变压器;整定计算 中图分类号:TM402 文献标识码:A Study on Protection Device Arrangement and Calibration Calculation of HV Service Transformer in Large-sized Hydropower Plants HE Lu MA Li SHI Shuang LU Xiu-li HE Miao WANG Han (HYDROCHINA Xibei Engineering Corporation Xi'an 710065 China) Abstract:In recent years override trip for protection of the HV service transformer occurs due to the irrational protection device arrange- ment and calibration calculation.In this paper the protection arrangement course of the HV service transformer of Ludila Hydropower Project is sampled to explore and study certain issues in protection device arrangement and calibration calculation of the HV service trans- formers applied in large-sized hydropower plants. Key words:service transformer;HV protection;transformer;calibration calculation 的保护配置,合理且符合运行实际要求的保护定值, 0引言 对厂高变运行而言就显得更为重要.本文以鲁地拉 现代大型水电厂越来越多采用大型、特大型机水电站的厂高变保护配置过程为例,在大型水电厂 组,其供电容量大、范围广,一旦发生事故将直接威 厂用系统接线特点分析的基础上,就大型水电厂的 胁系统的安全稳定运行,厂用电保护的重要性不...
Smart Grid 第30卷第12期 电网与清洁能源 Vol.30 No.12 2014年12月 Power System and Clean Energy Dec.2014 文章编号:1674-3814(2014)12-0096-03 中图分类号:TM744 文献标志码:A 基于Hadoop分布式并行计算在继电保护 整定计算中的应用 俞京锋1,阮远峰1,于乐2,李雪冬2 (1.国网德清县供电公司,浙江德清313200;2.北京中恒博瑞数字电力有限公司,北京100085) Application of Relay Protection Setting Calculation Based on Hadoop Distributed Parallel Technology YU Jingfeng' RUAN Yuanfeng' YU Le2 LI Xuedong? (1.State Grid Deqing Power Supply Company Deqing 313200 Zhejiang China;2.Join Bright Co. Ltd. Beijing 100085 China) ABSTRACT:Timeliness of puting applications should be 对于浙江德清县调而言,采用常规的整定计算 also taken into consideration when relay setting ealculation is方法所消耗的时间将十分可观,极大地影响了调度 conducted for county-level power eompanies.To achieve rapid 计划的整体编制进程,提高其计算效率对提升调度 relay setting calculation Parallel puting technology is used. 计划应用的实用性有重要意义. First this paper gives a general introduction to the hardware 串行计算在大数据量,无论是/0密集型,还是 deployed to deliver possibility of realization for the parallel CPU密集型,单台机器处理的数据效率低下,时 puting and then based on Hadoop distributed parallel puting it introduces Hadoop software framework and task 间元长.同时漫长的处理时间导致更大的错误出现 deposition.Finally taking the relay setting calculation i...