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PPT | 配电网故障监测及快速复电技术研究与深化应用

  • 2026-05-22 23:59:50
PPT | 配电网故障监测及快速复电技术研究与深化应用
01
核心速览
本文围绕国网宁夏电力配电网故障监测及快速复电技术的研究与深化应用展开,介绍了建设背景、接地故障处置、短路故障处置及未来展望等内容,旨在提升配网故障处置效率与供电可靠性。
02
建设背景
政策要求
:2025年国家发改委、能源局下发相关意见,要求到2029年基本建成现代化电力营商环境,对配网快速复电技术提出新要求,需科学规划配电网布局,推动高效抢修,如提高馈线自动化覆盖率等。
配网现状
:宁夏2009年开展配电自动化建设,2019年实现新一代主站系统全覆盖,目前配电终端覆盖率超90%,馈线自动化覆盖率96.66%,三遥终端覆盖率93.07%,配网线路暂态录波型故障指示器全覆盖,具备技术应用基础,但在提升供电可靠性上仍有空间,现有10千伏配电线路2139条,总长度4095.5公里,电缆化率98.77%,架空线路绝缘化率90.86%,线路N-1通过率90.58%。
工作思路与整体构架
:坚持“多元研判+精准定位”故障处置技术路线,做实图模数据提升、二次设备缺陷治理等基础工作,通过数据汇集分析、历史故障波形库构建等支撑故障研判与处置,实现故障精准隔离和负荷快速转供。
03
接地故障处置
暂态录波型故障指示器建设
:架空线路选择感应取电故障指示器,基于广域时钟同步及无线通讯技术,按“主干选段、分支选线”原则部署,覆盖39条线路,部署116套;电缆及混合线路在相关设备二次回路接入传感器,共享DTU电源回路,覆盖2072条线路,部署9020套。
设备优化与升级
:通过汇集单元数据扫描排查零序电流偏差大于2A等缺陷,动态调整安装位置,迭代升级设备使运行电流由7A降低至3.5A,提升适应性。
汇集单元边缘计算技术
:应用分布式同步录波,实现微秒级广域同步精度及高采样率数据采集,部署综合研判、聚类分析等算法,实现故障选线、选段、选相及绝缘缺陷预警。
绝缘缺陷预警与故障处置
:配电主站结合拓扑及研判结果实现接地故障精准定位,定义20分钟内同区段、同相别三次及以上瞬时接地故障为绝缘缺陷并派发告警工单,2025年上半年研判接地故障697次,选线成功率98.2%,派发预警短信449条,处置缺陷58项,主动干预32次,开展差异化运维31次。
04
短路故障处置
“三重保障”故障处置机制
:主线采用“首级保护+馈线自动化”,分支采用“分级保护+重合闸”,整站失电采用“母线失压感知+负荷一键转供”。
夯实运维基础
:部署网络拓扑智能校验、遥控智能巡检等功能提升图模质量、消缺二次设备、管理后备电源及核查保护定值,区域联络图实现“全景融合”,动态展示线路负荷情况;应用“群控”模块排查更换1774块异常电池,预设遥控巡检方案消除1672个遥控缺陷。
紧抓技术升级
:优化FA配置,深化“级差保护+馈线自动化”模式,研究“优先试送”FA,实现母线失压感知及多联络转供方案智能排序;深化保护定值核查整定,制定相关原则与要求,优化远程定值调阅下装功能;创新“优先试送式”FA,通过首级开关重合闸与集中式FA配合,实现瞬时故障快速恢复及永久故障隔离转供;深化负荷自动快速转供,生成转供方案并批量操作,提升多联络线路故障处置能力。
05
未来展望
配网监测向低压延伸
:为应对新型电力系统建设,需将配网监测延伸至低压,掌握反送电风险及低压配网运行状态,提升作业安全性与抢修效率。
深化故障处置技术应用
:开展磁控开关、网源分界开关、行波测距装置应用,构建“故障自识别、资源自调度、系统自恢复”智能处置模式。
加快快速复电技术应用
:研究一二次协同规划及低压台区联络转供技术,推广低压快接装置,优化网架结构,提升负荷转供效率与灵活性。

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  1. CONNECT:[ UseTime:0.000956s ] mysql:host=127.0.0.1;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001748s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000818s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000714s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001674s ]
  6. SELECT * FROM `set` [ RunTime:0.002828s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001533s ]
  8. SELECT * FROM `article` WHERE `id` = 504594 LIMIT 1 [ RunTime:0.001188s ]
  9. UPDATE `article` SET `lasttime` = 1779482153 WHERE `id` = 504594 [ RunTime:0.000687s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000244s ]
  11. SELECT * FROM `article` WHERE `id` < 504594 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.004560s ]
  12. SELECT * FROM `article` WHERE `id` > 504594 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.006696s ]
  13. SELECT * FROM `article` WHERE `id` < 504594 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.003775s ]
  14. SELECT * FROM `article` WHERE `id` < 504594 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002055s ]
  15. SELECT * FROM `article` WHERE `id` < 504594 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.006354s ]
0.109180s