|A Slightly Non-Technical Introduction to the Zigbee Smart Energy Profile||| Print ||
|Written by Akiba|
|Wednesday, 09 July 2008|
The Zigbee Smart Energy Profile has been getting a lot of attention recently, however there seems to be a lack of information on what the spec actually is. The info that I'm seeing in the press mostly deals with products that are coming out such as smart thermostats or perhaps the marketing research firms discussing the potential market size. There's no doubt that the smart energy market is potentially a very large market for Zigbee, but what exactly is it?
Smart Grid Facilitation Act of 2007 - Declares it is the policy of the United States:(1) to support the modernization of the electricity transmission and distribution system to incorporate digital information and controls technology and to share real-time pricing information with electricity customers; and (2) that electricity purchasers are entitled to receive information about the varying value of electricity at different times and places, and that states shall not prohibit or erect unreasonable barriers to the provision of such information flows to end users.
The implication of having some form of communications within the meters is that new applications can also be enabled. On the utilities side, automatic meter reading has the potential to save huge amounts since you won't need people to come by your house monthly and check your meter for usage data. All of this information would be available instantaneously via metering networks that the utilities could theoretically set up.
The meter network is something that the utilities industries are interested in because it could potentially save them large amounts of money. The idea is that for a neighborhood, all the meters would be fitted with a wireless radio that would allow them to join a network that funnels individual metering data to a gateway that communicates with the utility's home office. This would allow the utilities to avoid the cost of dispatching meter readers since the data is now coming to them in real time. The cost savings of this alone would be huge, however the utilities could then slice and dice that energy consumption data to more accurately estimate demand, pricing, and all the other wonderful things that statistical analysis allows you to do. The painful part about this is that America's metering infrastructure would need to be retrofitted with "smart meters" which is a huge investment. So most utilities aren't taking this drastic step yet. They're dipping their toes in the water with optional load control devices, which we'll talk about in a minute.
The home network, in the energy sense, is a wireless sensor network composed of a device that can communicate with the utility and other devices that can communicate with that device. In the Smart Energy Profile language, its composed of an "Energy Service Portal" and "Smart Energy Devices". Since I've arrived in California, I've already heard from my non-Zigbee friends that Southern California Edison is already introducing the smart Thermostat which gives the utilities the power to control the home's A/C and other HVAC equipment during peak load times in exchange for a reduction in electricity pricing. Using it is voluntary among the electricity customers, and I assume that most customers would probably be suspicious of allowing the utilities to control something as private as your home settings. Hey, I would and I'm a tech geek.
The Smart Energy Profile actually defines many other types of devices as well, but before we get into that, let me define a couple of the features in the Smart Energy Profile:
Okay, now that we got that out of the way, lets talk about the types of devices that are envisioned in the Smart Energy Profile specification.
Well, I guess that about does it for my slightly non-technical introduction to the Smart Energy Profile. I guess the final question would be "Is it ready for prime time?". I'm also interested in the answer.
written by eouiwer, February 10, 2009
|Richard Hansel. Sweden||
A Slightly Non-Technical Introduction to the Zigbee Smart Energy Profile
Feb 20 2010 15:31:39
This thread discusses the Content article: A Slightly Non-Technical Introduction to the Zigbee Smart Energy Profile
We are using Zigbee network (Zigbit – Bit Cloude Atmel) for warm water usage measuring based on an Energy Harvesting method. As the building owner want to use one and the same Zigbee network for different metering I m looking for a Zigbee profile standard allowing meters from different factories to be able to join one and the same network. [email protected]
Re:A Slightly Non-Technical Introduction to the Zigbee Smart Energy Profile
Feb 21 2010 11:46:03
I doubt you're going to find it. The Zigbee Smart Energy Profile has pretty heavy security. In the US, you need a certificate from a trusted authority in order to gain access to the network. That would probably be the utility or the encryption library provider. I don't think you can buy an off-the-shelf meter with Zigbee/802.15.4 in it and install it yourself. If the utility installs it, you can be pretty sure that the meter would be on their private network.
|< Prev||Next >|