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Cable line two remote fault location system

System overview


The system is a distributed monitoring, centralized management and instant notification mode with long-distance transmission capability.

System overview

The system is a distributed monitoring, centralized management and instant notification mode with long-distance transmission capability. The background fault location software cooperates with the on-site fault detection and indication device. When the line is in normal operation, the background interface displays the current load change in real time. When the fault occurs, it can accurately display the fault location and time. At the same time, it can send the fault location results to the designated person's mobile phone to help the maintenance personnel rush to the site and eliminate the fault , quickly restore the normal power supply.

Scope of application

■ Automation construction mode of distribution network in small and medium-sized cities and counties;

■ Transformation of overhead radiation line or line branch in urban distribution automation;

■ Application area: Class A / B / C / D / power supply area。

system function

■ Realize fast fault finding and locating, reduce fault inspection and fault handling time;

■Realize line load current monitoring and meet the basic demand of distribution network operation management。

System characteristics

■ Fast fault location: accurately locate the fault section within 1-2 minutes

■ Accurate fault location: the accuracy of short-circuit fault can reach 99%, and the accuracy of ground fault can reach 90%;

■ Load monitoring accuracy: load current collection accuracy is 3%, and load curve can be formed automatically for query;

■ High cost performance of investment: more than 80% less than the traditional automation construction scheme, and the same investment amount covers a wider range;

■ The project construction is convenient: no need to transform the primary equipment, special tools are used for installation and disassembly, no need to cut off power for the transformation of American ring network cabinet and other equipment, and only a short cut of power for the transformation of European ring network cabinet;

■ Flexible operation mode: it can be used as an independent operation platform for rapid repair of distribution network faults, or as a "two remote" module in distribution network automation system;

■ The communication mode is simple: the optical fiber communication mode is used from the short-circuit ground fault indicator to the panel indicator; the optical fiber communication mode is used from the panel indicator to the data forwarding station, and the GPRS / CDMA / SMS communication mode is used between the data forwarding terminal and the background monitoring.

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