Large-scale Hydropower Transporting Security Analysis And Its Visual System Design

POA is utilized for large-scale hydropower long and medium term optimization scheduling problem, implementing the Optimized result import to power grid security analysis system(PGSAS) is main research. a matching table is proposed for solving integrating the data from hydropower optimization system(HOS) and PGSAS; an abstracted PSD-BPA unit model and designing two kind of unit is used for the unit output import the flow calculation unit models. Analysis the wiring diagram of some different kinds of stations, a simple strategy is advised for confirming whether the units and other equipments around is start or not, then the regulated data file is confirmed fit for PSD-BPA procedure running. An analysis method based on liner regression is proposed for finding the limit of power flow, after adding matching constraints to the operation calculate the flow constraints have been met.In order to support power grid security analysis, a visual support system (VSS) is developed by means of graphical modeling and DB technology. A simple three-layer-structure is used for structuring system, graph theory for abstracting equipment models and figure objects, object-oriented method for modeling graph, and a stewardship way for managing figure layers. A method to implement the interface between visual systems and power grid analysis soft is put forward in system integration. Moreover, other key techniques are adopted, such as mark figure, map sheets splicing and detached island recognition. Finally, operation process on a grid map of a municipal power grid in Yunnan province shows that the system is advanced and available.