Vietnam is located in an area with dynamic weather of floods, thunderstorms and tropical typhoon. At the same time, Vietnam Power Grid consists of 7,183km of 500kV lines and 15,079km of 220kV lines (2015 data), passing through mountains and forests of rugged terrains. These conditions together result in high possibility for transmission line incidents while making operation management and line patrol to be highly complicated tasks.
SmartAFLTM is a solution to address this issue at optimal cost.
SOFTWARE
SmartAFLTM software is developed by ATS with standard-based features, making it a hardware-vendor independent software that can protect utility investment and lower total cost of project ownership throughout its lifecycle.
Figure 1 below illustrated the working of TW-based and Impedance-based distance-to-fault locating software. TW and Disturbance Impedance files are sent from Data Acquisition Units to Data Acquisition Server via private WAN. Automatic Fault Location calculation engine gets Travelling Wave and Impedance records of both ends and of the line parameters stored in system database to execute the appropriate distance-to-fault locating algorithms for the calculations. Operators are able to set up fault locating calculation in automatic or manual mode.
HARDWARE
ATS integrated fault locating system utilizes SEL-411L with capability for TW and DFR data collection in order to calculate distanceto-fault using both TW and Impedance method. SEL-3355 is used for server that collects, stores and calculates fault location at the Centre. This industrial computer with no element rotation is designed specifically for use in environments.
OUTPUTS
GIS visulization
Details of specified event
Display of waveform Viewer