Implementation of Hidden Markov Model for Home Appliance Load Detection
7 views (last 30 days)
Show older comments
Hello,
I am trying to implement HMM to detect electrical appliances' states (on,off or transitions). I am polling real time data (real power and reactive power) from a smart meter at 1 sample per second. Consider a simple system consisting only three simple device. These are:
A light: States- 1.On (50W real power, 10W reactive power) 2. Off (-50W real power, -10W reactive power)
A blender: States- 1. Power A (100W, 20W) 2. Power B (150W, 40W) 3. Off
A fan: States- 1. On (70W,-20W) 2. Off (-70W,+20W)
What I am getting is the temporal data sequences of real and reactive power (rise or fall).
Now my question is how to model this system to detect the states of devices (e.g. light off, blender power A) and set the parameters of HMM.
How to set the transition matrix, which is the emission matrix and initial state matrix!
3 Comments
Ali Bou Haidar
on 23 Aug 2016
I have a similar task at hand. I am trying to desegregate the total power consumption into individual appliance consumption knowing the total number of appliances and assuming two states (ON or OFF). I am trying to implement the Hidden Markov Model or the Factorial Hidden Markov model. Can you provide any help with that? So far I have managed to generate the transition and observation matrices using both the 'hmm.m' and 'fhmm.m'. I am trying to use the 'hmmgenerate.m' do you know if it's applicable? If not what can I use instead?
Answers (2)
Ali Bou Haidar
on 23 Aug 2016
I have a similar task at hand. I am trying to desegregate the total power consumption into individual appliance consumption knowing the total number of appliances and assuming two states (ON or OFF). I am trying to implement the Hidden Markov Model or the Factorial Hidden Markov model. Can you provide any help with that? So far I have managed to generate the transition and observation matrices using both the 'hmm.m' and 'fhmm.m'. I am trying to use the 'hmmgenerate.m' do you know if it's applicable? If not what can I use instead?
0 Comments
Wided HAMMEDI
on 19 Jun 2017
I am working on the home appliance load detection, I don't understand how to modelise the states of my appliance (signal with noise). Shall I make a Markov states for each appliance? I will be greatful if someone can help me. Thank you
0 Comments
See Also
Categories
Find more on Markov Chain Models in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!