IMPLEMENTATION OF NETWORK LINK VIA WIRELESS SYSTEM (3G) IN METROPOLITAN

ELECTRICITIY AUTHORITY'S DISTRIBUTION

MANAGEMENT SYSTEM !

Attapol Boonwan !Data Processing Officer 5!

Metropolitan Electricity Authority!1!

Topics

•  Introduction

•  Methods

•  Result

•  Conclusion

2!

Topics

•  Introduction

•  Methods

•  Result

•  Conclusion

3!

Load Break Switch!

Fiber Optic Cable!

Feeder Remote Terminal Unit!

DMS Master Station!

Topics

•  Introduction

•  Methods

•  Result

•  Conclusion

7!

DMS communication system

8!

DMS communication system

9!

DMSMasterstation

80 FRTU

FeederRemoteTerminalUnit

OutsideField Masterstationzone

LinkFail

LinkFail

10.0.1.102

10.0.1.101

IndustrialEthernetSwitch

Packetanalyzer(Wireshark)

10.0.1.110.0.1.210.0.1.310.0.1.4

10.0.1.80

10.0.1.7910.0.1.7810.0.1.77

10!

3G Router !

Industrial Ethernet Switch !

11!

DMS communication system

Diagram of TCP Handshaking & DNP3 Reset link

12!

FRTU Status and Measurement on DMS

Topics

•  Introduction

•  Methods

•  Result

•  Conclusion

14!

Result

•  Bandwidth - Measure the channel Bandwidth

•  Traffic - Measure the amount of receiving and transmitting of data

•  TCP Round Trip Time (RTT) - Compare the RTT

15!

Result

•  Bandwidth - Measure the channel Bandwidth

•  Traffic - Measure the amount of receiving and transmitting of data

•  TCP Round Trip Time (RTT) - Compare the RTT

16!

Result

17!

Communication Type

AVG. Bandwidth

Fiber Optic 9,500 Kbps 3G (Full Speed) 1,500 Kbps 3G (Low Speed) 100. Kbps

**FRTU 80 sets in loop!

Result

Period of Time Amount of Data 1 Sec. 4,725.85 B

60 Sec. 283.551 KB 60 Minutes 16,614.33 KB 24 Hours 389.40 MB 30 Days 40. GB

**FRTU 80 sets in loop!

Result

19!

Communication

AVG. of Round Trip Time

Fiber Optic 1 ms 3G (Full Speed) 80 ms

3G (Low Speed) 400 ms

Topics

•  Introduction

•  Methods

•  Result

•  Conclusion

20!

Conclusion !

23!

Q & A !

24!