CAJ | 학술논문

设计了一种以附加直流电源检测式漏电保护和功率方向型漏电保护为基础的，以嵌入式STM32F407ZGT6为控制核心的低压漏电保护装置。采用了提升小波变换方法进行电力参数的去噪，实时有效地滤除电力参数干扰信号，提高井下的电力参数检测的实时性和准确性；并基于μCOS-II操作系统完成装置的软件设计，提高了系统的可靠性和可扩展性。设计的漏电保护装置从安全性、选择性和可靠性方面综合考虑，有效地提高了煤矿井下供电系统的安全性和煤矿的生产效率。
설계료일충이부가직류전원검측식루전보호화공솔방향형루전보호위기출적，이감입식STM32F407ZGT6위공제핵심적저압루전보호장치。채용료제승소파변환방법진행전력삼수적거조，실시유효지려제전력삼수간우신호，제고정하적전력삼수검측적실시성화준학성；병기우μCOS-II조작계통완성장치적연건설계，제고료계통적가고성화가확전성。설계적루전보호장치종안전성、선택성화가고성방면종합고필，유효지제고료매광정하공전계통적안전성화매광적생산효솔。
Designs a kind of low voltage leakage protection device, on the basis of additional DC power supply detection and power directional leakage protection, and it chooses the embedded STM32F407ZGT6 as the control core. The lifting wavelet transform denoising method is used to denoise those interference signal for power parameters, thus the the accuracy and real-time of the underground power parameter ’s detecting are increased. The device’s software design is carried out based on the μCOS-II operating system so as to improve its reliability and scalability. The device designed in this paper consideres comprehensively from the following aspects: the safety, the selectivity and the reliability, and the safety of underground coal mine power system and the production efficiency of the coal mine are both improved.