The invention belongs to the technical field of alternating-current traction bilateral power supply, and particularly relates to a bilateral traction power supply system and power grid energy flow coupling system equivalence method. Based on a complex structure of an electrified railway bilateral power supply system, three-phase and single-phase symmetric transformation of primary and secondary electrical quantities of a traction transformer is realized, and a looped network power supply structure of the bilateral power supply system is finally equivalent to an open three-phase power supply network structure, so that power flow analysis of the bilateral power supply system is facilitated; furthermore, the method is used for theoretically analyzing an equalizing current distribution rule, influence factors thereof, a power flow distribution rule and the like in a bilateral power supply system. Compared with a traditional lumped parameter equivalent model, the model provided by the invention is more accurate, the theoretical analysis purpose is wider and clearer, and the considered power system side three-phase structure can provide great help for successful landing of subsequent bilateral power supply and construction of a matched power transmission network.
本发明属于交流牵引双边供电技术领域,具体的说是涉及一种双边牵引供电系统与电网能流耦合的系统等效方法。本发明基于电气化铁路双边供电系统的复杂结构,对牵引变压器原、次边电气量实现三相和单相的对称变换,将双边供电系统环网供电结构最终等效成开式三相供电网络结构,便于双边供电系统的潮流分析,进而用来理论分析双边供电系统中的均衡电流分布规律及其影响因素、潮流分布规律等等。相较于传统集中参数等效模型,本发明提出的模型更为准确,理论分析用途更加广泛且清晰明了,所考虑的电力系统侧三相构造,能够为后续双边供电的成功落地及其配套输电网络的构建提供极大帮助。
System equivalence method for bilateral traction power supply system and power grid energy flow coupling
一种双边牵引供电系统与电网能流耦合的系统等效方法
2024-11-19
Patent
Electronic Resource
Chinese
IPC: | G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / 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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