煤矿井下3.3 kV供电网络漏电故障保护研究

The Study on Leakage Protection Fault of Underground Coal-mine's 3.3 kV Power Supply Network

随着我国工业化进程的加快,对煤炭需求的持续增加,煤矿井下已越来越多采用3.3 kV供电电压等级,大大增加了漏电故障发生的概率,人生财产安全受到很大威胁。利用MATLAB/Simulink对井下常见漏电故障进行仿真分析,给出了漏电保护措施,并设计了相应的漏电保护装置,给出了硬件框图和保护程序流程图。

With the acceleration of Chinese industrialization and the continue increasing demand for coal mine, more and more coal-mines use the 3.3 kVvoltage level. So the probability of leakage failure occuring is greatly in- creased, and the lives of people and property safety is greatly threatened. The common leakage fault types based on MATLAB/Simulink are simulated, given the leakage protection measures, and designed the corresponding leakage fault protection device. The hardware diagram and protection program flow chart are presented.