Serial-to-Fiber in the Bangkok Power Grid
2006/09/26 Linking measuring devices in metropolitan substations to a control room
VOLKTEK delivers a reliable, distance-extending, EMI-resistant solution
The Challenge:
The Metropolitan Electricity Authority of Thailand (MEA) recently needed to get real-time readings from hundreds of measuring devices in power substations spread out over metropolitan Bangkok. The solution would have to link these serial-type (RS-232) devices to a central control room, bridging large distances. The solution would also have to protect the transmitted date from EMI.
The Ethernet Solution:
The MEA chose VOLKTEK’s IRF-631 Media Converter because it links RS-232 cable to 100FX fiber cable. The IRF-631SC model was used because it is the single-mode version of the IRF-631 and it can transmit data over 30, 60, 100 or 120km, depending on the model. From the converter, the data can now flow safely to a matching converter in the control room, free from the data-corrupting influences of any electromagnetic waves that may be generated in the power station or metropolitan area.
Mission: Link multiple serial-type devices (RS-232) for measuring electrical variables in widespread power substations to a central control room via Fast Ethernet.
Requirements: The solution must extend transmission distances far beyond the limits of copper cable. The solution must safeguard the integrity of the transmitted data in an area filled with EMI-generating sources.
Solution: VOLKTEK’s IRF-631 Media Converters link RS-232 cable to 100FX fiber cable. IRF-631SC (with SC connector) models were used because they are the single-mode version of the IRF-631 and can extend transmission distances to either 30km, 60km, 100km or 120km – depending on the model. From the converters, the data can now flow safely to the control room, free from the data-corrupting influences of any electromagnetic waves that might be generated in the metropolitan area. |
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