The invention discloses a rail transit traction power supply system and a control method. The rail transit traction power supply system comprises at least one main substation and N traction substations connected with the main substation through an alternating-current looped network. Wherein each traction substation comprises a power transformer, a bidirectional converter, an energy storage device, an alternating current circuit breaker, a first circuit breaker and a second circuit breaker; the high-voltage side of the power transformer is connected with the alternating-current looped network through the alternating-current circuit breaker, and the low-voltage side is connected with the alternating-current side of the bidirectional converter; the direct current side of the bidirectional converter device is connected with the direct current contact network through the first circuit breaker and connected with the energy storage device through the second circuit breaker. According to the rail transit traction power supply system, the no-load loss problem of the bidirectional converter device is completely eliminated, meanwhile, the system cost is reduced, the energy-saving effect and the peak load shifting effect of the system are improved, and the power supply reliability of the system is improved.
本发明公开了一种轨道交通牵引供电系统及控制方法,包括:至少一个主变电所、通过交流环网与主变电所连接的N个牵引变电所;其中,每个牵引变电所包括动力变压器、双向变流装置、储能装置、交流断路器、第一断路器和第二断路器;动力变压器的高压侧通过交流断路器与交流环网连接,低压测与双向变流装置的交流侧连接;双向变流装置的直流侧通过第一断路器与直流接触网连接,并通过第二断路器与储能装置连接。本发明的轨道交通牵引供电系统,完全消除了双向变流装置的空载损耗问题,同时降低系统成本,提升系统节能效果和削峰填谷效果,并提高系统供电可靠性。
Track traffic traction power supply system and control method
一种轨道交通牵引供电系统及控制方法
2023-05-19
Patent
Elektronische Ressource
Chinesisch
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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