The increase in the amount of generators based on renewable energy sources (RES) in the power system is leading to many changes in its operation. Since the RES depends on weather conditions, coordinating the operation of the entire power system has become a more complex issue. New challenges need to be faced in order to supply the electric energy to the customers at the appropriate quality level. In this paper the concept and architecture of a complex Virtual Power Plant (VPP) will be introduced and discussed. The focus will be paid to the optimization of the structure of the VPP as well as to its optimal operation. The result of the optimization have been presented and discussed in the paper taking into account different operation scenarios.Index Terms -Virtual Power Plant, power flow monitoring and control, renewable energy sources, synchronized measurements, system observability.
In this paper the approach of implementing the phasor measurement units (PMU) into the state estimation method in order to improve the power system monitoring at the distribution level will be presented. The possibility of using accurate synchronized measurement data for the simulation to enhance the calculation of the power system state will be presented. The simulation will be performed on an example network with dispersed generation (DG) and the results of the approach will be shown and discussed
Phasor measurement units (PMUs) were installed in an industrial distribution network and synchronized measurements taken from the PMU at medium and low voltage during different system states were analyzed. Two cases of system operation were investigated, normal and abnormal operation. Results from up to six PMUs were compared and analyzed for each case
Especially influenced by the rising number of renewable and distributed power generation plants and so-called unbundling, the controllability and protection of power supply systems are becoming ever more complex as these systems are developed further. To securely meet these challenges a reliable observability of the power system is needed. Novel digital measurement equipment such as phasor measurement units (PMU) in transmission and distribution networks and smart meters in low voltage grids deliver the system parameters needed to perform a system state estimation analysis. This paper discusses the use of PMUs to support the operation of virtual power plants (VPP). It additionally presents methods, which have already been tested in different simulations, to optimally select the locations of measurement units to ensure system observability
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.