The main problems of tower grounding resistance measurement are the unknown position of the tower grounding body caused by long-time buried span that affects measurement accuracy because of the imprecise electrode arrangement, the low efficiency achieved when measuring without a connected grounding lead, and the large error obtained when a tower grounding lead is connected. Hence, a novel method to measure tower grounding resistance is presented in this paper. In the proposed method, current of different frequency ranges is injected through the grounding lead on the premise of connecting a tower grounding lead. On the one hand, this method detects the buried position by analyzing the surface magnetic field intensity caused by exciting current. On the other hand, the method measures the tower grounding resistance value of different frequency ranges to obtain an accurate value through data processing. A measurement model with a connected grounding lead was constructed. The surface magnetic field distribution of the grounding body was analyzed. The accurate measurement condition was evaluated to determine the frequency range of exciting current and the data processing method. Finally, a simulation was performed to verify the method. Results showed that the method can identify the position of the tower grounding body and can measure the resistance accurately with a connected grounding lead.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Novel Method for Tower Grounding Resistance Measurement




    Publication date :

    2017




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English



    Classification :

    BKL:    53.33 / 53.33 Elektrische Maschinen und Antriebe



    rotatable grounding type tower crane

    CHOI JAE HA | European Patent Office | 2020

    Free access


    Grounding resistance measuring trolley

    LI LING / ZHANG XINBIN / ZHANG BINGNAN et al. | European Patent Office | 2020

    Free access

    Grounding impedance measurement method of integrated grounding system in high-speed railway roadbed section

    Zhang, Yi / Wang, Jianguo / Qi, Guangfeng et al. | IET | 2015

    Free access