-Apart from the positive technical consequences like reducing losses, the increasing penetration of Distributed Generation (DG) units connected to the distribution network, has lead to the increase of the short-circuit (sc) currents and the fault level. Therefore it is important to know the contribution of each unit. This paper presents the available analytical equations to calculate the short-circuit current, and makes a comparison between the IEC 60909 and the results obtained by the simulations in a test network that incorporates these units.
The increase of dispersed generation (DG) has a strong impact on power system operation. A distribution network, where most of dispersed generators are connected, cannot be considered as passive anymore. Active character of the distribution networks brings problems and uncertainties, but at the same time offers more possibilities for control. Control of distribution networks with DG can be performed by means of primary controllers of dispersed generators, compensating devices and tap changers of transformers. Most of the control normally is using only local measurements. At the same time, it is obvious that the problems, which will arise with the increase of the DG in the future, must be solved by partially decentralized control (control, centralized inside defined area). In this paper, possible structure for such control is presented.Index Terms-Dispersed generation, power management and control, dynamic security assessment.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.