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.