The invention relates to a fault-tolerant operation control method for a hybrid through traction power supply device, which solves the problem of out-of-limit of negative-sequence current and module power at a power grid side in a fault mode by adjusting a control strategy of a two-phase input module and a single-phase output module according to the characteristics of the hybrid through traction power supply device. According to the method, device parameters are determined and collected in real time, whether a device module breaks down or not is judged, if the two-phase input module breaks down, power out-of-limit control and negative-sequence current suppression are adopted, so that the power of a healthy module does not exceed the limit when the two-phase input module breaks down, and the negative-sequence current on the public power grid side is rapidly eliminated; and if a single-phase output module fails, active bypass operation of a failure module and boost operation of a healthy module are adopted, so that the power of a single-phase output side is always kept constant, and the power requirement of a traction load is met. According to the invention, no hardware equipment needs to be added, and the operation safety and reliability of the device can be effectively improved.
混合式贯通牵引供电装置容错运行控制方法,通过针对混合式贯通牵引供电装置自身特点调整两相输入模块和单相输出模块的控制策略,解决故障模式下电网侧负序电流与模块功率越限问题,具体的,本发明先确定装置参数与实时采集装置参数,再判断装置模块是否发生故障,若发生两相输入模块故障,则采取功率越限控制和负序电流抑制,使两相输入模块故障下健康模块功率不越限,并快速消除公共电网侧负序电流,以提升电气化铁路贯通牵引供电系统电能质量,若发生单相输出模块故障,则采取故障模块主动旁路和健康模块升压运行,使单相输出侧功率始终保持恒定,满足牵引负荷功率需求。本发明既无需增加任何硬件设备,且可有效提高装置运行的安全性和可靠性。
Fault-tolerant operation control method for hybrid through traction power supply device
混合式贯通牵引供电装置容错运行控制方法
2023-01-13
Patent
Electronic Resource
Chinese
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60M Speiseleitungen oder Vorrichtungen am Gleis für elektrisch angetriebene Fahrzeuge , POWER SUPPLY LINES, OR DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |
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