Software solution for fault record analysis in power transmission and distribution

Digital protection relays provide the functionality of recording network disturbances during faults. Meanwhile the digital share in the installed relay number is a substantial one, so the utilities can gather valuable information with a large coverage of their grid and can start to enjoy the additional benefits of modem technology beyond the functions built into the devices. After a fault the operating personnel wants to obtain a most precise fault location to narrow the search for possible damage on the line. The fault locator precision of a single relay is limited by physics and by the grid conditions of mixed lines, load taps etc. But an easy-to-use software system for relay fault records can provide the desired precision to the utility personnel. The system is open to fault records of any relay, which is accomplished via the Comtrade data format. It also contains the parameters of segmented or untransposed lines. Furthermore it uses sophisticated self-adapting algorithms for analysis beyond those used at the protection relays.