基于HPLC宽带电力线载波技术的配电电压质量在线监测方法研究

Research of Online Monitoring Scheme for Distribution Voltage Quality Based on HPLC Broadband Power Line Carrier Technology

在电力配电工作中,电压是衡量电能质量的关键指标之一,也是影响电力设备正常工作的关键性因素。加强对台区低压用户电压质量的监测、管理对提高供电质量、提升供电企业社会形象均具有举足轻重的作用。然而,现有管理手段无法精准监测到用户侧的低电压。为此,提出一种基于HPLC宽带电力线载波技术的配电电压质量在线监测设计方案,在现有采集系统的基础上,通过将下行通信方式改为HPLC宽带电力线载波技术,完成全范围智能电表电压、电流、功率、相位等计量数据的精准、高频采集,实现配电电压质量的精准在线监测,进而为低电压治理提供数据支撑。

In distribution network,voltage is one of the key indicators to measure the power quality,and it is also a key factor affecting the normal operation of power equipment.Strengthening the monitoring and management for voltage quality of low-voltage users in the substation area plays an important role in improving the quality of power supply and improving the social image of power supply company.However,the existing management methods cannot accurately monitor the low voltage,especially on the user side.Therefore,a design scheme for on-line monitoring of distribution voltage quality is proposed based on HPLC broadband power line carrier technology.On the basis of the existing acquisition system,through changing the downlink communication mode to HPLC broadband power line carrier technology,the accurate and high-frequency acquisition of voltage,current,power,phase and other measurement data of smart electricity meters is completed.Furthermore,the precision of distribution voltage quality is realized,and the data for low voltage governance is supported.