INSTABILITY, FREQUENCY AND VOLTAGE IN MANAUS

The article describes the system instability, frequency and voltage in Manaus. Electrical systems are relevant to the functioning of cities and are constantly evolving to meet growing demands. The deregulation of the sector and the continuous incorporation of new equipment technologies make the system's operation complex. Therefore, it is necessary to improve the methods and instruments for monitoring and controlling the operation of the system in real time. Several technologies appear every year, but in Brazil there is the Automatic Generation Control (GAG) and supervisory control of the system, which aims to control the generation in plants in order to meet the goals determined by the System Operator. Ensuring that the frequency remains constant and in a range close to its nominal value. It also has the power flow control function in the interconnection lines. Increasing demand for electricity today means that electric power systems operate near the limit. The lack of policies appropriate to the reality of the sector and the economic order of the country aggravate the problem of power generation with regard to frequency and voltage stability. The objective of this paper is to evaluate the performance and identify the most appropriate strategy of Load-Frequency and Voltage Control for the case of the Manaus system, when the Network Operation topology changes.