摘要 近年来,随着经济的快速发展,对电力供应的可靠性要求愈来愈高,改善 和提高电力可靠性水平,已成为中国电力界的共识,电力生产管理中使用可靠 性技术和方法的愿望及需求日益增长淮阳供电公司开展了全方位的优质服务, 不断满足客户日益提高的用电需求和服务标准但目前,由于各种原因,特别 是35kV变电站停电次数居高不下的影响,农网供电可靠性并不理想 本文总结了2008年淮阳供电区内造成各35kV变电站停电次数的因素:恶 劣天气!停电倒负荷!计划检修!外力破坏和其他等,通过分析找出变电站停 电次数高的主要原因是停电倒负荷介绍了供电可靠性的相关指标!潮流计算 和短路计算的常用方法,重点介绍了电科院开发的PSASP6.26综合应用程序的 潮流计算和短路计算的优越性 根据淮阳供电区电网结构,进行理论潮流计算和稳定计算,适当考虑裕度, 以确定是否可以实现合环倒负荷,并利用由电科院开发的PSASP6.26综合应用 程序进行建模计算,验证35kV变电站不停电倒负荷的可行性根据计算出的合 环约束条件,制定了5蹼阳供电区35kV电网合环操作管理规定6,其中具体规 定了合环时应具备的条件35kV变电站通过合环倒负荷,降低了因停电倒负荷 而造成的电量损失,提高了农网供电可靠性 关键词:PSASP6.26综合应用程序;合环倒负荷;供电可靠性AbstraCt AbstraCt Inreeentyears,withtherapideeonomiedeveloPment,thereliabilityof eleetrieitysuPPlyrisingdemand,imProveandenhaneethelevelofPowerreliability, hasbeeometheeonsensusofC瓦na,5Powerseetor,PowerProduetionand managemeniteehniquesandmethodsusedinthereliabilityofthedesireandgrowing demand.PuyangPowercomPanytoearryoutafullrangeofserviees,weeontinueto meetinereasingeustomerdemandandservieestandards.But,fory斌ousreasons, partieularlythehighnumberof35kVsubstationoutageaffeetedruralPowersuPPly reliability15notsatisfacto砂. Thisartielesuporn面zesthe2008Puyang35kVsubstationofthePoweroutage eansedbytheregionnumberoffaetors:badweather,Powereutsdownload, seheduledmaintenanee,vandalismandothersuehexternalforees,throughthe analysistofindoutthenumberofhigh一Powersubstation15maiulyduetoPower downtheload.DeseribestherelevantindieatorsofsuPPlyreliability,Powerflowand shorteircuitoftheeommonmethods,foeusesonthedeveloPmentofPSASP6.26 EPRIintegratedapPlieationflowealeulationandshorteireuitsuPeriority. PuyangareaunderthePowergridstrueture,theoretiealealeulationofPower flowcaleulationandstability,dueeonsiderationmargin,todeterminewhethertheean downloadringtogetherandusetheEPRIintegratedaPPlieationdeveloPmentmodel PSASP6.26ealeulatedverifieation35kVsubstationPowerdowntheload15not feasible.Cyelizedaceordingtotheealeulatedeonstraints,formulatedthe0zoneof Puyang35kVPowergridregUlationsClosedLooPOPeration,whiehsPeeifiesthe jointringshouldhavetheeondition.35kVsubstationbyelosingthelooPdownload, redueingtheloaddownduetoPoweroutageseausedbyPower1055andimProvethe ruralPowergridreliability. Keywords:PSASP6.26ComPrehensive:ClosedLooPdownload:the apPlicationreliability目录 目录 摘要.................................................................................................................I Abstract................................................................................................................H 1绪论.................................................................................................................1 1.1引言..........................................................................................................1 1.2国内外研究现状...............................................#2 1.3本文所做的主要工作..............................................................................5 2电力系统潮流与短路计算.................................................................6 2.1概述...............................................................................................,..6 2.2电力系统潮流计算...............................#6 2.2.1高斯一赛德尔法........................................#.#8 2.2.2牛顿一拉夫逊法........................................#.#8 2.2.3快速解祸法.....................................................#8 2.3电力系统短路计算..................................8 2.3.1短路计算的用途........................................#9 2.3.2短路计算问题的解法................................9 2.45电力系统分析综合程序6简介........................................................9 2.4.1PsAsP的计算分析............................................,!#,!#10 2.4.2PSASP的三层体系结构...................................................................10 2.4.3PSASP潮流计算方法......................................................................11 2.4.4PsAsP短路计算.......................................................12 2.4.5在淮阳电网的运用情况............................................#.....#..#13 3蹼阳供电区可靠性管理..............................,............................................14 3.1淮阳电网简介....................................................14 3.2影响可靠性的因素..............................................................................17 3.335kV电网可靠性概况.........................................................................17 3.3.1恶劣天气因素分析...............,..............#18 3.3.2停电倒负荷因素分析..................................................................19 3.3.3计划检修因素分析.........................................................................19目录 3.3.4外力破坏因素分析.........................................................................20 3.3.5其他因素分析................................................................................21 3.3.6因素分析的结论..................,....................................................21 3.4确定目标..............................................................................................21 3.5目标实现可行性分析..............................,....................................,22 3.6要因确认与分析..................................................................................22 3.7制定对策..............................................................................................25 3.8对策实施.............,..........................................................................27 435kV系统合环运行方案.................................................................,29 4.135kV清庙线!纸庙线合环运行方案..........................................,29 4.1.135kV合环潮流计算结果.....................,.....................................29 4.1.2短路容量及保护定值校核结果........................................................30 4.1.335kV纸庙线!清庙线合环前准各一l几作............................................32 4.1.435kV纸庙线!清庙线合环运行电网危险点分析.................,......32 4.1.535kV纸庙线!清庙线合环前方式安排...........................................,32 4.1.635kV纸庙线!清庙线合解环操作............................................,33 4.1.7其它..............................................................................................34 4.235kV台安T夹线!台鱼线合环运行方案.........................................34 4.2.135kV合环潮流计算结果.................................................................34 4.2.2短路容量及保护定值校核结果..................,...............................38 4.2.335kV台安T夹线!台鱼线合环试验前准备一l几作..............................39 4.2.435kV台安T夹线!台鱼线合环运行电网危险点分析.......................39 4.2.535kV台安T夹线!台鱼线合环前方式安排.....................................40 4.2.635kV台安T夹线!台鱼线合解环操作............................................40 4.335kV台尚线!台马线合环运行方案.................................................40 4.3.135kV合环潮流计算结果二,..............................................................41 4.3.2短路容量及保护定值校核结果........................,.........................43 4.3.335kV台尚线!台马线合环试验前准备_7作.....................................44 4.3.435kV台尚线!台马线合环运行电网危险点分析..............................45 4.3.535kV台尚线!台马线合环前方式安排............................................45 4.3.635kV台尚线!台马线合解环操作...................................................45目录 4.435kV楼军线!楼淮线合环运行方案.................................................48 4.4.135kV短时合环潮流计算结果.........................................................