A new and intelligent operation assessment system in simulation training of substation
Most nation-wide substation simulation systems only provide the function of generating dispatch operation sheet and the new personnel always fail to cope well with the operation for the vital network and the complex dispatch task due to their lacking of practice and shortage of intensive memorization. It's necessary to enhance the training intensity while the new function should be implemented for optimizing in order to promote the training effectiveness. For above problems, the envisage design for the assessment system in this paper is presented based on self-invented substation simulation system of generating dispatch operation sheet.
FUZZY SYNTHETIC EVALUATION OF POWER QUALITY BASED ON CHANGEABLE WEIGHT
The quantified description from power quality synthetic evaluation is available for reference to the consumers in choosing the power suppliers, and it is also beneficial to fix the price according to the quality of electric energy. Combining the analytic hierarchy process (AHP) with fuzzy theory, at first the subjective weights are obtained, then by means of modifying the obtained subjective weights the changeable synthetic weights are formed, at last power quality at the point of common coupling(PCC) is evaluated by fuzzy synthetic evaluation and the power quality level and the power quality factor are obtained. Case results show that the proposed method is beneficial to distinguish power quality level and to conduct the quantitative and qualitative evaluation of power quality.
Knowledge based system support for introductory power system network analysis on personal computers
The application of artificial intelligence for knowledge-based systems (KBSs) is reviewed and applied to the basic power system network analysis problem. A frame-based KBS has been developed to assist students in preparing data for power flow analysis. The prototype for a power flow knowledge-based system (PFKBS) is an example of a shallow knowledge system. The details of an implementation for a simple power system are used to highlight the difference between a frame-based approach and a conventional FORTRAN approach. The data structures used within the developed frame-based KBS are presented in sufficient detail for anyone to regenerate the database. The user interface is illustrated for a small power system. The method of preparing data for the power flow as a sequence of knowledge bases is discussed for the example system. >