LDOV-1000 is an equipment designed to locate faults (short circuits) in electric power transmission networks with high voltage, following the principle of traveling waves, with precision, around 500 meters , independently from the length of the line monitored.

Traveling waves are signals of high frequency (in the range of 2.0 MHz) propagating in the transmission line, when there is a fault event propagating to both sides of the line monitored. Based on these waves and their reflection, it is possible to determine their source point, identifying with precision the place of a failure within 500 meters .

The principle is based on acquisition of current information from line TCs, by current transformers associated to them. In this way, the equipment installation can be done with the transmission line in operation, having no need to turn it off.

EQUIPMENT COMPOSITION:

•  MR-1000 TW – Module of records processing;
•  CEA-03-TW – Module of traveling waves input;
•  TOV-BR03 – Transductor of current for traveling waves;

CHARACTERISTICS:

•  2MHz rate of acquisition;

•  Power source from 100 to 250 Vac / Vdc;

•  Generation of files with operation history (LOG files);

•  Distributed installation, within maximum distance of 1km for communication between modules;

•  Monitoring without interruption of current channels.

•  Possibility to monitor up to 4 Bays;

•  Recording in the format IEEE–COMTRADE;

•  Non-volatile memory, 2Gbytes FlashDisk (+ optional hard disk) to store fault files;

•  Three Ethernet standard network interfaces, 2 redundant rear and 1 front services interface with DHCP-Server;

•  Remote communication by Modem and Ethernet;

•  Modem interface with optical insulation.

•  Sending fault files by TCP/IP, FTP protocols

•  Optical connection for up to 4 remote acquisition modules