The invention provides an overhead line system rapid ice melting method based on resonance impedance. The method comprises the following steps: obtaining a resonant frequency of a target line on a contact network to be subjected to ice melting treatment, and finding a measuring point with a relatively large impedance amplitude based on the resonant frequency by taking a line position as a variable; and an ice melting device is installed at the measuring point position, the ice melting device injects harmonic current of resonant frequency into the target line, Joule heat is generated by using a resistance value at the measuring point position, and ice on the target line is melted and falls off. The characteristics that the impedance at the inherent resonance point of the contact network is the maximum value and is pure resistive are utilized, the requirement for short-circuit current is lowered, the design difficulty of the ice melting device is lowered, meanwhile, the reactive power flow of the line does not need to be considered, and the communication interference, line insulation and aging risks are reduced.

    本发明提供了一种基于谐振阻抗的接触网快速融冰方法。该方法包括:得到待进行融冰处理的接触网上的目标线路的谐振频率,基于谐振频率以线路位置为变量找到阻抗幅值较大的测点;将融冰装置安装在所述测点位置,融冰装置向目标线路注入谐振频率的谐波电流,利用测点位置处的电阻值产生焦耳热,使目标线路上的覆冰融化脱落。本发明利用接触网固有谐振点处阻抗取极大值且为纯阻性的特点,降低了短路电流的需求,减轻了融冰装置设计难度,同时不需要考虑线路的无功潮流,减小了通信干扰、线路绝缘和老化风险。


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    Title :

    Resonant impedance-based rapid ice melting method for overhead line system


    Additional title:

    一种基于谐振阻抗的接触网快速融冰方法


    Contributors:
    LIU QIUJIANG (author) / PENG PENG (author) / LI FEI (author) / WU MINGLI (author) / CAO GUOTAO (author) / YE JINGJING (author)

    Publication date :

    2023-05-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60M Speiseleitungen oder Vorrichtungen am Gleis für elektrisch angetriebene Fahrzeuge , POWER SUPPLY LINES, OR DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES / H02G INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES , Verlegen oder Installieren elektrischer Kabel oder Leitungen, Verlegen oder Installieren kombinierter optischer und elektrischer Kabel oder Leitungen / H05B ELECTRIC HEATING , Elektrische Heizung



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