Evaluación de la seguridad dinámica en línea en base a una interfaz de protocolo de comunicación OPC de arquitectura unificada.

Abstract

This report proposes the development of an interface based on the Unified Architecture (UA) OPC communication protocol for the communication of a SCADA system emulated in the Python open source programming environment with its Pypower module, for the Dynamic Security Assessment (DSA) which is carried out in PowerFactory, together with Python. The generation of the different operating scenarios is based on the use of an hourly demand curve, in addition to the use of Monte Carlo simulations on a continuous basis. In this sense, considering the measurements acquired from the SCADA emulator, meters are created in the PowerFactory environment for the acquisition of these data, using the State Estimation tool, the measurements are revised and validated, so that these values will be used to update the variables of the network elements. In this way, the most probable operational state of the system is determined, which is then used to perform DSA.

Finally, based on the operating case already defined, multiple critical contingencies are evaluated dynamically in order to proceed to the calculation of the stability indexes: voltage (VDI), frequency (FDI) and transient (TSI). From the values of these indexes, the causes of insecurity of the network can be defined, considering the voltage, frequency and transient stability events that can be generated, according to the operating characteristics of the system and the phenomena related to the defined stability criteria.