Composition introduction

Monitoring terminal, central station and user system

technical parameter

Working power supply: solar power supply, standby power supply;

Sampling rate: 10M;

Standby time: no less than 30 days in normal temperature environment;

Mean time between failures: no less than 5 years;

Number of continuous records of the terminal: 2000 times;

Transition resistance: not less than 1000 Ω;

Ranging accuracy: better than 300m;

Fault resolution: 10ms;

Fault traveling wave recording time: 10ms;

Fault frequency recording time: 100ms;

Fault diagnosis time: < 30min;

Terminal power: < 0.5W;

Communication mode: GPRS communication;

Installation distance: 30km —— 60km;

Ambient temperature: - 40 ℃ - + 80 ℃;

Relative humidity: 5% rh-100% RH;

Air pressure: 86kpa-106kpa;

Altitude: ≤ 5000m.

Technical characteristics

The principle is advanced: the Distributed installation shortens the monitoring distance, solves the problem of signal attenuation, and realizes the fault location when the high resistance is grounded;

Simple structure and convenient installation: the terminal is directly installed on the transmission line tower;

Dynamic wave speed Adaption: the system adaptively adjusts the traveling wave speed according to the fault data, and the positioning accuracy is more accurate;

High reliability and maintenance free: the terminal design takes into account the complex environmental factors, the operation does not need manual intervention, maintenance free, and the ranging terminal is standby for each other;

Complete power supply system: the terminal adopts low-power design, solar panel, super capacitor and battery redundant power supply design to improve power supply reliability;

Independent operation of the system: GPRS communication is adopted for data transmission, no interaction with other systems and no dependence on power communication dispatching system;

High speed synchronous sampling: Based on GPS timing system and precise sampling synchronization algorithm, the sampling synchronization error of the system is greatly reduced and the ranging accuracy is improved;

Powerful central station and user system: the central master station has powerful data receiving, data storage and data statistics functions. Provide detailed and complete data such as result release and fault query for the user system.