Remote MV Transmission Line Ring Main Unit Fault Indicator

System Composition

The system is composed of 3 pcs short circuit sensor, 1 pcs earth fault sensor, and 1 pcs data concentration, and the monitoring central station.

1. Cable Line Installed part include:
1.1 Sensor : 4pcs/SET, include 3 pcs short circuit sensors and 1 pcs earth fault sensor. 3 pcs short circuit sensors respectively installed in A,B,C three phase Cable Line, 1 pcs earth fault sensor installed on the bifurcation unshielded part of three-phase cable.

1.2 Data Concentrator Unit: Installed inside or outside the Ring Main Unit(or Cable Distribution Box, Switch Cabinet). One data concentrator unit can receive fault signal sent by sensors through 433MHz or fiber optic and send to central station through GPRS/3G/4G LTE cellular network. The data concentrator Unit is mainly composed of industrial modem.

2. Monitoring central station include: 
One set data server with software system. Monitoring central station usually setup in power utility office, power substation, etc. When receiving the fault message from the data concentrator unit, combined with GIS system, the maintenance crew man could quickly locate the fault site and trouble-shoot.

The software system could be SCADA or other software platform, usually power utility companies have their own software system. Four-faith also have our own-developed software system.   

Operation Worked Example

1. Short circuit indication:
On detection of flowing current value exceed the fault sensitivity threshold, the Short circuit sensor will send fault signal through fiber optic to the Display Unit. The Display Unit will respond by light flashing in the short circuit indicator. 

2. Earth fault indication:
On detection of the zero sequence current value exceed fault sensitivity threshold, the earth fault sensor will send fault signal through fiber optic to the Display Unit. The Display Unit will respond by light flashing in the earth fault indicator. 

Note: If customers use their own software system, then should offer Four-faith the software data communication protocol format, so that the FOURFAITH data concentrator could be able to communicate with the software system.

Operation Worked Example

With the remote monitoring central station, the maintenance crew man could be able to accurately locate the fault section via the GIS in the software system, thus save a lot of time for troubleshooting.

1. Short Circuit Indication
On detection of flowing current value exceed the fault sensitivity threshold, the short circuit sensor will send fault signal through 433MHz or fiber optic to the data concentrator, the data concentrator will send the fault signal through GPRS/3G/4G LTE cellular network to the remote central station, the crew man then could quickly identify and locate the fault section and go for troubleshooting at the pointed site.

2. Earth Fault Indication
On detection of the zero sequence current value exceed fault sensitivity threshold, the earth fault sensor will send fault signal through 433MHz or fiber optic to the data concentrator, the data concentrator will send the fault signal through GPRS/3G/4G LTE cellular network to the remote central station, the crew man then could quickly identify and locate the fault sectionand go for troubleshooting at the pointed site.

Locate the fault section in the FOURFAITH software which embedded with Google map

Industrial IOT for Smart Grid

Four-Faith has been providing M2M (now industrial IOT) application solution since 2008. Combined with the latest industrial IOT technology, Four-Faith Smart Power focus on offering complete solutions for Power Distribution Grid.

Complete Certification

Four-Faith passed ISO9001, SGS certification, product passed the CE, FCC, EMC certification, Environmental Testing Certification, the State Grid Center Certification , the State Industrial Production Permit, Ministry of Water Resources and Hydropower Research Evaluation and Certification, etc.

Always Leading Technology

With 10 years of R&D experience and keep leading in the market, Four-Faith has accumulate the latest wireless communicate technology such as NB-IOT, LoRa, ZigBee, together with Four-Faith advantage in GPRS/3G/4G LTE and WiFi, Four-Faith Smart Power is able to provide flexible and advanced networking in the Power Distribution Remote Monitoring.

High Quality Control at Production

Four-Faith own complete SMT factory and assembly facility. With Advanced modern production line, automatic placement machine, welded joint, in-circuit testers and other specialized production equipment, Four-Faith is able to commit to the customer for providing high-quality control products.

Packing

With years of export experience along with excellent quality, advanced services and competitive prices, Kingnod has won numerous customers' trust and support. With years of export experience along with excellent quality, advanced services and competitive prices, Kingnod has won numerous customers' trust and support.

Delivery

With years of export experience along with excellent quality, advanced services and competitive prices, Kingnod has won numerous customers' trust and support.With years of export experience along with excellent quality, advanced services and competitive prices, Kingnod has won numerous customers' trust and support.