Research on ON-LINE Insulation Monitoring Instrument of IT Power System in the Down Hole Mine

2018 5th International Conference on Advanced Composite Materials and Manufacturing Engineering

Wen, Jie^1 ; Zeng, Tiejun^1 ; Yan, Feng^2 ; Chen, Wenguang^1

College of Electrical Engineering, University of South China, Hengyang

421001, China^1

Changsha Engineering and Research Institute Ltd of Nonferrous Metallurgy, Changsha

410011, China^2

关键词: Hardware and software;    Highly accurate;    Insulation monitoring;    Insulation performance;    Insulation resistance;    Low frequency power;    Low frequency voltage;    Low-frequency signals;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/394/4/042081/pdf
DOI  :  10.1088/1757-899X/394/4/042081

来源: IOP

【 摘 要 】

Base on The characteristics of IT power distribution system in metal mine downhole, on the basis of the analysis and comparison of existing insulation monitoring methods, with the low-frequency power injection method, the online insulation monitoring instrument of the IT power distribution system is designed in the metal mine down hole. By injecting the low-frequency power in the IT power distribution system, urge Low frequency signal source and insulation resistance and ground make up of circuit, Real-time detect voltage and current in the circuit. Sampling signals filtered By means of hardware and software filter, extracting low-frequency voltage and current in the circuit, implement ON-LINE insulation monitoring of IT power distribution system. Proved by experiment, the instrument is highly accurate and can complete the insulation performance monitoring of the whole IT power system.