基于非失电条件的配电线路融冰方法的研究

Study on ice melting method of distribution line without losing electricity

针对被广泛采用的直流融冰、人工除冰等融冰方法在非失电条件下不能使用的缺陷,提出一种基于高频激励电源的配电线路融冰方法。该方法在配电线路中间设置一个高频激励电源,通过较高的电流频率促使线路导体发热和覆冰导电发热达到融冰的目的;同时通过在融冰线路两端设置高频和低频滤波器,抑制激励电源引入的高频、低频谐波,提高在融冰过程中电力系统向终端用户的供电质量。经仿真分析表明,该融冰方法具有融冰效果良好、在非失电条件下供电质量不受影响等优势。

A method of ice melting of distribution lines based on high frequency excitation power was proposed in view of the shortcomings of widely used methods such as DC melting ice and manual deicing.The method of excitation power supply in the distribution line was arranged in the middle of a high frequency,by using higher current frequency,the conductor of the line is heated and the ice is heated to achieve the purpose of melting ice.At the same time,by setting high and low frequency filter in both ends of ice melting circuit,the high frequency and low frequency harmonics introduced by the excitation power supply are suppressed,and the power supply quality of the power system to the end users during the melting process is also improved.The simulation analysis shows that the ice melting method has good melting effect,and the quality of the power supply is not affected in the condition of non power loss.