Perhaps of interest here...
-------- Original Message -------- Subject: [smartpower-interest] XMPP messaging - smart grid Date: Thu, 14 Jul 2011 22:27:44 +0530 From: suhas aggarwal <[email protected]> To: [email protected] Respected sir, I did a deep study of XMPP messaging protocol in my last assignment.In my study,I implemented an XMPP client server incorporating event node terminology.Basic Architecture is Sensor Readings taken by Sensor are converted into XML format by a Sensor Over XMPP (SOX)Library by an adapter.Adapter publishes these values(Items) to event nodes present in XMPP server.Event nodes are virtual locations inside XMPP servers where items are collected.Different XMPP clients can subscribe to different event nodes and retrieve individual items. Some key questions I have is - Can we use this architecture in a substation? Can this architecture meet real time requirements considering extra latencies induced by data formatting? Various IEDs can act as publisher and subscriber which publish values to XMPP servers.This will also include incorporation of adapter servers which collect data from merge unit,relay IEDs, convert sensor data to XML format.My question is - Is this conversion dataformatting really needed for IEDs communicating within local area network?Is it needed for Local HMI?Is it needed to send data to control center? Moreover,adapter can have added advantage of intelligently combining sensor values from different IEDs ,so that monitoring applications which are interested in seeing and analysing data from multiple IEDs can retrieve/obtain this data in a single document.Adapter can publish this item in corresponding event node from which different applications interested can retrieve from. I am providing link to a related paper which discusses Sensor Andrew Architecture used for critical infrastructure monitoring. http://www.ices.cmu.edu/censcir/resources/SensorAndrew-Tech-Report.pdf Sincerely, Suhas Aggarwal
_______________________________________________ smartpower-interest mailing list [email protected] https://www.ietf.org/mailman/listinfo/smartpower-interest
