Application of FTU200 and LTE Modem（F3814-WF）in Distribution Automation System

Application background

In distribution power grid, Feeder Terminal Unit (FTU) is the key point to realize feeder automation. Its main function is to realize Fault Detection, Isolation and Restoration (FDIR), reducing outage time, improving reliability of power supply.

The Feeder Terminal Unit (FTU) is suitable for automation projects of urban, rural and enterprise distribution networks, and can complete the monitoring, control and protection of pole switches, as well as communication and other automation functions.

Xiamen Four-Faith Smart Power Company's mature products 4G LTE modem F3814-WF and F-FTU200 are two mainstream products that can provide perfect solutions for distribution automation.

System topology

System composition

Recloser, FTU200(Include F-RLY200 protection relay), F3814-WF, SCADA System.

Solution value

1.  F3814-WF 4G LTE modem is installed in the FTU200 box and connected to Protection Relay F-RLY200 via RS232/RS485/Ethernet to provide it with GPRS/3G/4G network environment. It receives and forwards analog, signal, and control signals and transmits them to the SCADA System;

2. FTU200 obtains current/voltage and other values from the recloser, and F-RLY200 implements data measurement, protection control, reclosing and other automated control logic, controls open/close of the recloser, and realizes feeder automated protection;

3. With the continuously development of distribution automation worldwide, more and more Feeder Terminal Units are applied in overhead lines, while protecting feeder, implementing local or centralized fault self-recovery control, and by communication network, connecting to SCADA system, realizing remote functions.

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