基于泄放能量函数的配网线路故障区段定位方法

• Format: Patent
• Language: Chinese
• Published: 06.06.2017
• Subjects: GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ONOTHER TECHNOLOGY AREAS; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORKOPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FORIMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION,DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TESTING

本发明公开了种基于泄放能量函数的配网线路故障区段定位方法，对于非故障区段，其泄放能量在正常运行及故障发生过程中几乎保持不变，且数值为极小的正数；对于故障区段，泄放能量函数直流分量变化趋势为先增后减，且在故障发生至消弧线圈动作且输出稳定补偿电流时段内达到最大值；因此根据泄放能量在故障发生后的增大倍数可判断故障区段，实现故障定位。本发明利用故障发生及消弧装置动作全过程的波形数据，避免采用零序电流，可很好解决目前普遍存在的小电流接地系统单相接地故障时故障电流微弱、可靠性差、灵敏度低的问题，同时不会对系统引入干扰。