Abstract
There is now an increased interest in distributed generation (DG) plants located in close proximity to power consumers; at the same time, it is assumed that a significant number of the DG facilities utilizes renewable energy resources. The wide use of DG technologies in electrical energy systems (EES) requires development of new control algorithms in normal, emergency, and postemergency modes. The issues of determining limit loads for the EES equipped with DG plants are of particular importance. These plants can be removed from the consumption centers, which leads to a ‘narrowing’ of static aperiodic stability (SAS) areas. This paper presents the results of studies aimed at developing methods for determining the SAS areas in the EES equipped with DG plants. On the basis of the limiting mode equations, an effective technique for determining the EES stability areas with DG plants for various network structures were propose, and the results of building SAS areas for an electrical network with distributed generation were present. Additionally, simulation of transient processes in the EES under study were carried out for various points in the space of the mode controlled parameters in MATLAB.
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