The invention provides a city railway bilateral power supply traction network fault segmentation identification method and system. Comprising the following steps. The voltage phasor of the transverse connection line HLn at the t moment and the voltage phasor at the t + delta t moment are obtained; the voltage variable quantity of the transverse connection line HLn is calculated according to the voltage phasor of the transverse connection line HLn at the t moment and the voltage phasor at the t + delta t moment; a traction network fault voltage component matrix is calculated according to the voltage variable quantity of all the transverse connection lines HLn of the line; a fault segment s is judged according to the traction network fault voltage component matrix; obtaining the current phasor of the head-end transverse connection line HLs and the current phasor of the tail-end transverse connection line HLs + 1 of the fault section s at the moment t + delta t, and calculating the flow directions phi s and phi s + 1 of the transverse connection lines at the two ends of the fault section s according to the angle of the current phasor of the transverse connection lines, so as to obtain a flow direction matrix {phi s, phi s + 1} of the transverse connection lines at the two sides of the section s; and according to the power flow direction matrix {[phi] s, [phi] s + 1} of the transverse lines at the two ends of the fault segment s, judging whether the fault is in the uplink or downlink of the segment. The algorithm is simple, reliable and convenient to implement.
本发明提供了一种市域铁路双边供电牵引网故障分段辨识方法及系统,包括步骤:获取t时刻横联线HLn电压相量和t+Δt时刻电压相量根据t时刻横联线HLn电压相量和t+Δt时刻电压相量计算横联线HLn的电压变化量根据线路所有横联线HLn的电压变化量计算牵引网故障电压分量矩阵根据牵引网故障电压分量矩阵判断故障分段s;获取t+Δt时刻故障分段s首端横联线HLs电流相量与末端横联线HLs+1电流相量根据横联线电流相量角度与计算故障分段s两端横联线潮流方向φs与φs+1,得到分段s两侧的横联线潮流方向矩阵{φs,φs+1};根据故障分段s两端横联线潮流方向矩阵{φs,φs+1},判断故障位于分段上行或下行。本发明算法简单可靠,实施方便。
City domain railway bilateral power supply traction network fault segmentation identification method and system
一种市域铁路双边供电牵引网故障分段辨识方法及系统
2023-01-03
Patent
Electronic Resource
Chinese
IPC: | B60M Speiseleitungen oder Vorrichtungen am Gleis für elektrisch angetriebene Fahrzeuge , POWER SUPPLY LINES, OR DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES |
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