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Research & Development has been focused around four main topics:
1.    Electricity markets
Research on electricity markets started at the end of 1992 when the Victorian state government in Australia had decided to introduce an electricity market and to privatise the power supply industry. Monash University in Melbourne, where prof. W. Mielczarski was employed, supported the state and power companies in the introduction of a competitive electricity market. The introduction of electricity markets is the main stream of research which has been carrying out for the past 15 years. The results of this research have been published in several books, edited volumes and journal and conference papers. The list of the books and edited volumes published includes:
Research and projects relating to electricity markets were carried out in 1997 - 2001 for the Canadian province Ontario in collaboration with Ontario Hydro Technologies. The projects carried out includes the design and construction of a simulator for the Ontario electricity market, taking into account the technical structure of the power systems with network constraints and electricity trade with advanced bidding strategies. Other projects aimed at the development of a new methodology allowing for power flow tracing, which can be implemented in the calculation of nodal transmission and distribution charges. The new method called Inage Domain is an effective way to determine detailed paths of electricity flow from generators to loads, indicating the degree of usage of network assets by each customer. The nodal transmission and distribution charges can be computed based on the utilisation of network assets involved in the supply of electric power to a given customer. The main projects carried out for Ontario Hydro include:
The project for the Polish electricity market, started in 1999 and includes the development of new algorithms for the commitment and dispatch of power generating units in the balancing market. The algorithms derived are based on the implementation of linear-binary programming. The main computer module called LPD (Linear Programming Dispatch) is associated with network constraints module called GMOS which represents network constraints and reliability criteria in the form of nodal constraints. The commitment and dispatch optimisation problem is represented by a simplex matrix of 25000 x 70000 cells with over 2500 binary variables. Optimisation usually takes 2-3 minutes for the Polish power system consisting of over 100 large generation units. The computer modules LPD and GMOS were commissioned in September 2001 and are used daily by the Polish transmission operator. The development and implementation of new algorithms for optimisation of commitment and dispatch were awarded by the Polish Prime Minister in 2005.

The method of linear-binary programming was also implemented in a feasibility study to optimize programs for power generating units in the power system managed by Independent System Operator in New York in 2005. The project aimed at the development of optimisation methods allowing for the computation of  generation programs for gas turbine combine cycle units taking into account their technical characteristics.

Prof. W.Mielczarski is the author of several strategic projects relating to the power supply industry. These projects include the design of the Polish electricity market, which was approved by the Polish government in December 1999 and gradually implemented in the following years. Another large project, with the substantial commitments of prof. W. Mielczarski, relates to the new structure of the Polish power supply industry and implementation of the liberalised electricity market. The project is called "Program for the electricity supply industry". It was approved by the Polish government in March 2006 and aims at the consolidation of the power industry in four vertically integrated groups and consequently their privatisation.

  Optimisation of power system operation.

The main achievements in this area include the control of large asynchronous motors subject to stochastically varying torques worked out as a part of the PhD thesis completed in 1978, development of nonlinear observers for synchronous generators as a part of the DSc thesis (habilitation) and the design, in collaboration with Dr Antoni Zajaczkowski, of nonlinear controllers associated with the previously derived nonlinear observers. Research results have been published in journal and conference papers::
Nonlinear controllers and observers of synchronous generators are implemented in the project aiming at optimal control of the Victorian power system carried out by Monash University for the State Electricity Commission of Victoria.                                                                                                                                                                      
3.    Quality and reliability of supply

Research relating to quality of electricity supply has focused on compensation of high harmonic currents in three-phase bridge rectifiers and three-phase fluorescent lamps. New compensation methods were patented in 1982 and 1983 - three patents. The research, supported by grants, was continued at Curtin University of Technology in Peth and Monash University in Melbourne.

List of quality of supply research projects includes::

The results of research on quality of supply have been published in journal and conference proceedings.

The electricity market approach to supply quality was a project for the Office of the Regulator-General in Victoria, aiming at the development the quality chapters in "Distribution Code" in 1997. Taking the supply quality as a function of mutual interaction of customers' equipment and distribution networks, the new market approach splits the responsibility for supply quality between distribution system operators and customers. It was the first such solution implemented into a legal regulation and it has been functioning for over 10 yeas. The newest version of the "Distribution Code" preserves the market approach to the regulation of supply quality.

Quality of electricity supply is a main subject of the volume “Quality of Electricity Supply & Management of Network Losses”, (pp.386) published in Melbourne in 1997.
4.    Artificial Inteligence application to power engineering

The application of AI methodology relating to the implementation of fuzzy logic to the solution of some difficult power engineering problems includes: decision making, reliability calculation, handling imprecise data, modelling of power demand in the residential sector, the use of linguistic variables in surveys evaluating the demand for new electricity equipment and modelling of electricity market bidding strategies. The results have been presented in the volume published by Springer Verlag in 1998. It was the first comprehensive publication covering the application of fuzzy logic to power engineering.