VULNERABILITY EVALUATION IN ELECTRICAL POWER SYSTEMS EVALUACION DE VULNERABILIDAD EN SISTEMAS ELECTRICOS DE POTENCIA

nowadays power systems increasingly operate near to their capacity, therefore it is very important the electrical variables real time monitoring, in order to infer on the power grid health for each load condition or contingency. Additionally, the smart grid concept has posed different challenges, among which stands out the on- line assessment of network security to make early decisions avoiding some situations that put at risk the power supply continuity. Whereas in most cases security problems result in voltage instabilities, is proposed a strategy that permit a voltage collapse proximity estimation, which has been called vulnerability, the premise is that power flow calculation is not required, requiring only to know the bus voltages.