The invention discloses a network voltage compensation method for an electrified railway locomotive, and belongs to the technical field of train control. The method comprises the following steps: obtaining the sizes and phases of primary side voltage and primary side current of a current power grid; determining whether to enter a reactive power compensation mode based on the phase difference between the primary side voltage and the primary side current; under the condition of determining to enter the reactive power compensation mode, calculating the pulse width modulation compensation phase of each single converter of the locomotive and the duty ratio of each converter; and each single converter of the locomotive performs reactive power compensation on the power grid according to the calculated compensation phase and duty ratio. According to the method, the reactive power at the power grid side is eliminated through the reactive compensation strategy of the electric locomotive converter, so that the effects of stabilizing the network voltage and compensating the power of the power grid are achieved.
本发明公开了一种电气化铁路机车补偿网压方法,属于列车控制技术领域。该方法包括:获取当前电网的原边电压和原边电流的大小和相位;基于原边电压和原边电流的相位差确定是否进入无功功率补偿模式;在确定进入无功功率补偿模式的情况下,计算机车各个单变流器的脉冲宽度调制补偿相位和各个变流器的占空比;机车各个单变流器根据算出的补偿相位和占空比对电网实施无功功率补偿。该方法通过电力机车变流器的无功补偿策略,对电网侧的无功功率进行消除,从而起到稳定网压,补偿电网功率的效果。
Method for compensating network voltage of electrified railway locomotive
一种电气化铁路机车补偿网压方法
2024-01-09
Patent
Elektronische Ressource
Chinesisch
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 |
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