Transmission line conductor breeze vibration often causes line broken stocks fall off

break line

hardware and other hazards

The traditional on-line monitoring method used more exposed outdoor sensors will reduce the long-term stability and may be easily influenced by bad weather. To solve these problems

an on-line monitoring system based on piezoelectric accelerometer is developed. First of all

the vibration acceleration through a piezoelectric accelerometer is acquired which is installed on the wire

and the vibration frequency and vibration amplitude is al

so acquired through the fast Fourier transform（FFT）and frequency domain integral. Then

through the Zigbee wireless module send to the monitoring device installed on the tower. Finally

through the GPRS communication

the data is sent to the provincial monitoring center network company. Results show that the breeze vibration sensor based on piezoelectric accelerometer system can measure 1

1

50 Hz of vibration frequency and 0.1

1

.5 mm of the amplitude accurately. And the wire bending strain value calculated through the amplitude can also meet the basic requirements of technical specification. At the same time

the breeze vibration on-line monitoring system designed in this article has the characteristics of easy installation

wide measuring range

thus

the sensor can provide accurate and reliable technical support for transmission lines breeze vibration monitoring.