The invention provides a control method and system for a droop controller of a flexible direct current traction power supply system, and the method comprises the steps: obtaining a current value and a voltage value of the droop controller, and calculating an active power actual value; calculating an active power deviation value according to a preset active power reference value and the active power actual value; determining a first DC voltage compensation amount; calculating a real-time direct-current voltage deviation value according to the direct-current voltage actual value and a preset direct-current voltage reference value; determining a second DC voltage compensation amount; calculating a current reference value of a d axis of a current inner loop according to the first DC voltage compensation amount, the active power deviation value, the real-time DC voltage deviation value and the second DC voltage compensation amount; and inputting into the droop controller for dynamic power response and DC voltage stabilization. According to the invention, the voltage deviation of the direct-current system is reduced, the transient and steady-state performance of the system is improved, and the combination of the direct-current system based on the modular multilevel converter and the traction power supply system is effectively promoted.
本发明提供一种柔性直流牵引供电系统下垂控制器的控制方法及系统,包括,获取所述下垂控制器的电流值与电压值并计算有功功率实际值;根据预设的有功功率参考值和所述有功功率实际值计算有功功率偏差值;确定第一直流电压补偿量;根据所述直流电压实际值和预设的直流电压参考值计算实时直流电压偏差值;并确定第二直流电压补偿量;根据所述第一直流电压补偿量、所述有功功率偏差值、所述实时直流电压偏差值及所述第二直流电压补偿量计算电流内环d轴的电流参考值;输入所述下垂控制器进行动态功率响应和直流电压稳定。本发明降低了直流系统电压偏差,提高了系统暂态和稳态性能,有效推进基于模块化多电平换流器的直流系统与牵引供电系统的结合。
Control method and system for droop controller of flexible direct-current traction power supply system
一种柔性直流牵引供电系统下垂控制器的控制方法及系统
11.11.2022
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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Engineering Index Backfile | 1933
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