02.06.2014 Views

symbolic dynamic models for highly varying power system loads

symbolic dynamic models for highly varying power system loads

symbolic dynamic models for highly varying power system loads

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

58<br />

5.2 Recommendations<br />

The following are some recommendations <strong>for</strong> the future work in this area:<br />

• A multidimensional <strong>symbolic</strong> <strong>dynamic</strong> dictionary can be used to represent<br />

different parameters together. For example, a symbol in this new concept may<br />

represent the value of current, voltage, and frequency in one particular state.<br />

Another possibility is the use of derivative in<strong>for</strong>mation in the <strong>symbolic</strong> <strong>dynamic</strong><br />

dictionary.<br />

• Frequency domain parameters might be added to the time domain analysis shown<br />

in this thesis. For example, some frequency components of load current may be<br />

used as model states.<br />

• Validity of the proposed model can be checked by implementing it on the<br />

historical data set of other <strong>varying</strong> <strong>loads</strong> such as a steel rolling mill.<br />

• Alternative methods of discretizing a signal can be considered to eliminate the<br />

difficulties associated with shifting and scaling the signal.<br />

• State estimation techniques <strong>for</strong> the bad data rejection can be implemented while<br />

<strong>for</strong>ecasting the future value of load current.<br />

• The model can be modified to apply in load <strong>for</strong>ecasting.<br />

• To improve the per<strong>for</strong>mance of the model <strong>for</strong> the <strong>power</strong> conditioning application,<br />

coding of the model in some other programming languages should be considered.<br />

• The model can be used in designing a microprocessor controlled active <strong>power</strong><br />

filter.<br />

• Because Symbolic Dynamics makes no use of a physical load model, and it does<br />

not utilize frequency domain in<strong>for</strong>mation, consideration should be given to the

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!