关键词: 静电除尘器, 伏安特性, 电晕放电, 线-网极配形式

Abstract: Electrode configuration is the key component of electrostatic precipitation，and the V-I characteristics of electrode are often used as important parameters to analyze and evaluate corona discharge characteristic，power performance and ESP operation. The influence of corona wire diameter，positive and negative polarity，gas velocity and relative humidity had been studied under no- load conditions of a wire-net electrostatic precipitation. The results showed the diameter of corona wire and corona polarity had a great effect on corona current；under condition of the high voltage and large gas velocity，gas velocity had an influence on V-I characteristics；relative humidity had a great impact on the breakdown voltage，and there was little effect on inception voltage before reaching unsaturated air.

Key words: electrostatic precipitator, V- I characteristics, corona discharge, wire- net electrode configuration