A current increment collaborative protection method based on bilateral power supply of a traction power supply system comprises the following steps: S1, communication channel selection; s2, creating a collection unit; s3, data synchronization; s4, setting a fixed value protection; s5, protection principle analysis and calculation; s6, electric quantity calculation and analysis; s7, performing cooperative judgment; s8, a current increment blocking signal is sent out; s9, latching current increment protection; and S10, determining a current increment protection principle. Under the combined action of related processes, the characteristics of high bandwidth, high reliability, low time delay and the like of a channel of an existing wide-area protection measurement and control system are utilized, the feeder current of each station on a power supply arm is obtained through a wide-area protection channel, the electrical quantity distribution with loads and without loads is analyzed, and according to the electrical quantity distribution condition, the measurement and control system is established. High-resistance grounding faults and multi-load current taking working conditions are effectively distinguished, action correctness and power supply reliability are guaranteed, and favorable technical support is provided for stable and reliable bilateral power supply in special regions.
一种基于牵引供电系统双边供电的电流增量协同保护方法,包括如下流程,S1:通信通道选择;S2:创建汇集单元;S3:数据同步;S4:设置定值护;S5:保护原则分析计算;S6:电气量计算分析;S7:协同判断;S8:发出电流增量闭锁信号;S9:闭锁电流增量保护;S10:电流增量保护原则确定。本发明在相关流程共同作用下,利用现有广域保护测控系统的通道的高带宽、高可靠、低时延等特点,通过广域保护通道获取供电臂上各所的馈线电流,分析带负荷与不带负荷时的电气量分布,根据电气量分布情况,有效区分高阻接地故障与多负荷取流工况,保证了动作的正确性及供电可靠性,为特殊地区稳定可靠实现双边供电起到了有利技术支持。
Current increment collaborative protection method based on bilateral power supply of traction power supply system
一种基于牵引供电系统双边供电的电流增量协同保护方法
2024-11-22
Patent
Electronic Resource
Chinese
IPC: | H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / B60M Speiseleitungen oder Vorrichtungen am Gleis für elektrisch angetriebene Fahrzeuge , POWER SUPPLY LINES, OR DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung |
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