一种基于零序功率原理的井下选漏保护装置设计

The Design of Residual Current Protection Equipment based on Principle of Zero Sequence Power

随着我国煤炭工业的快速发展、高产高效矿井的建设以及煤矿井下机械化和自动化程度的提高,对煤矿井下供电的连续性、可靠性和安全性提出了越来越高的要求,本文提出以单片机为核心基于零序功率原理的井下选漏装置的设计。该装置可将采集到的零序电流信号和采集移相后的零序电压信号做乘积运算,快速地实现漏电故障的选线保护。

With the quick development of coal industry of our nation,the construction of coal mine with high produetion and efficient, and the improvement nf mechanization and automation of coal mine,have increasingly high requirements of conseeutiveness,reliahility and safety of power supply.This thesis put fro＇ward the design of residual current production hased on principle of zero sequence power using single-chip as eontrol core.This equipment can take multiplex operation of zero sequence cun＇ent and phase-moved zero sequence voltage to realize the pro- tection of grounding fault.