Household Electrical Consumptions Modeling and Management Through Neural Networks and Fuzzy Logic Approaches - Complex System Modelling and Control Through Intelligent Soft Computations

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In-Depth Information

4.1 Appliances Classi

cation

In particular to build the fuzzy rules a load classi

cation based on the human

interaction has been used and four different groups found:

Continuous use appliances, characterized by a 24/7 use, not depending on

factors like the time of the day and the number of active occupants of the

dwelling (e.g. refrigerator).

Periodical use appliances without human interaction during the operation (e.g.

washing machine, dishwasher, oven).

Periodical use appliances with human interaction during the operation (e.g.

vacuum cleaner, iron).

Multimedia appliances and lighting, with a strongly intermittent use, directly

related to the number of active occupants of the dwelling.

These 5 different categories of appliances have different fuzzy input-output vari-

ables. Input variables for the FIS inference are the time h(t) of the day, the per-

centage p(t) of unoccupied people in the dwelling and DT/T(t) that is the time

elapsed since the last appliance start normalized on his period. The outputs of the

FIS engine are the probability P(t) to start a certain appliance and the total time D

(t) the appliance will be on. In particular Table 1 contains inputs and outputs for

each category.

Another classi

cation method considered is based on the automation level, in

particular we can

nd:

Smart Appliances: loads for which consumption pro

le is available and it is

possible to choose the start time (remotely or locally).

Controllable Loads: loads which are connected to smart plugs and can be

remotely switched on/off without damage and degradation of consumer quality

of experience.

Monitorable Loads: connected to smart plugs to monitor their consumptions;

they can not be switched on/off.

Detectable Loads: the consumption of which can be estimated by performing the

difference among the power measures provided by the smart meter and all the

smart plugs and appliances, being them not smart appliances and not connected

to smart plugs.

Table 1 Fuzzy input output

variables for the different

appliance