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
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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