The invention relates to the technical field of alternating current electrified railway power supply, in particular to a negative sequence treatment method and system for an electrified railway traction substation, and the system comprises a step-down isolation transformer and an SVG compensation subsystem. The primary side of the step-down isolation transformer is used for being connected with the high-voltage wire inlet side of a three-phase power grid of a traction substation, and three-phase medium-voltage electricity is formed after step-down isolation and connected to a three-phase medium-voltage bus. The SVG compensation subsystem is used for being connected to a three-phase medium-voltage bus; the SVG compensation subsystem is used for outputting negative sequence compensation current; the direction of the negative-sequence compensation current is opposite to that of the negative-sequence current generated by the traction load, and the negative-sequence compensation current and the load current generated by the traction load counteract each other, so that the treatment of the negative-sequence current is realized.
本发明涉及了交流电气化铁路供电技术领域,具体涉及了一种电气化铁路牵引变电所负序治理方法及系统,系统包括降压隔离变压器和SVG补偿子系统;所述降压隔离变压器的原边用于连接牵引变电所三相电网高压进线侧,经降压隔离后形成三相中压电接至三相中压母线中;SVG补偿子系统用于连接到三相中压母线;SVG补偿子系统用于输出负序补偿电流;所述负序补偿电流的方向与牵引负荷产生的负序电流方向相反,与牵引负荷产生的负荷电流相互抵消,实现负序电流的治理。
Electrified railway traction substation negative sequence treatment method and system
一种电气化铁路牵引变电所负序治理方法及系统
2025-04-04
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 / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
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