Supervisor’s report on dissertation “Comparison of methods for calculating parameters of a power supply system” written by Andrey Neshcheretnev
Andrey fulfilled all the instructions set up for the dissertation, which is devoted to comparing the performance of a paper and computer based approaches (PBA and CBA, respectively). These two approaches are applied for computing the parameters of a power supply system in a metallurgical plant. The right choice or perhaps even a combination of these two approaches may allow better understanding energy and economic efficiency and designing an electrical system.
The dissertation first describes individual parameters of a power supply system. Next, PBA and CBA are described in depth. Finally, having all necessary details described, the dissertation compares results obtained by the two methods from technical and economical perspectives. CBA is found to be better.
Some parts of the text are unclear or grammatically wrong (for example the description of temperature on page 22). This is understandable as English is not Andrey’s native language.
Comments and questions:
Provide an empirical distribution of electrical loads of industrial enterprises in Russia. Is normality a reasonable distributional assumption?
In formula (9) what is t ? How does one determine the number of degrees of freedom?
The dissertation considers a metallurgical plant as a case study. Are the results and conclusions sensitive to the choice of a case study?
In equation (52) how was beta determined?
I think formula (53) is incorrect.
These comments and questions must be addressed during the dissertation defense.
For the dissertation I propose the classification B (very good).
Mgr. Sherzod Tashpulatov, M.A., Ph.D.
