One of the new technologies identified for increasing the security of the BIPS was the implementation of a Synchronized Phasor Measurement System (SMSF) to perform the analysis of large events.

The synchronized phasor measurement was developed some years ago and made ​​possible by the deployment of the reference of time of the Global Positioning System - GPS. This measurement technology allows the analysis of long-term phenomena and opens a wide range of opportunities for new and better tools for operation of electrical systems.

The long-term phenomena, such as electromechanical oscillations and frequency variations appear in electrical systems when large disturbances that affect the system so widespread occur. The analysis of these phenomena basically involves measurement of frequency and module and phase angle of the electrical magnitude for periods of time ranging from seconds to a few minutes after the occurrence of the disturbance.

In this scenario, ONS initiated necessary actions for the implementation of a SMSF for in the BIPS. These actions correspond basically to the installation of Phasor Measurement Units (PMUs) on the equipment in the BIPS and the installation of hardware and software infrastructure for acquisition and analysis of synchrophasors on the premises of ONS.

Analysis for the implementation of SMSF in the BIPS began in 2005. Between 2007 and 2008, ONS counted on funds from the World Bank - ESTAL project - to study the use of Synchrophasors for real-time applications. From 2012, ONS initiated the request for a new loan from the World Bank - META Project - to purchase all the hardware and software infrastructure for deploying SMSF at ONS.

The project financing through the World Bank is interesting to ONS, since it uses a "refundable" line of credit, in which the World Bank finances 80% and the Brazilian government comes with 20% of the funding. For practical purposes, there is no impact on the tariff, which in the final analysis benefits the Brazilian consumer.

Currently, ONS already makes use of tools based on Synchrophasors for some assessments in post-operation, through a pilot project with the Federal University of Santa Catarina - UFSC. The current forecast is that the system of PMUs of the BIPS, under the management of ONS, is in operation by the end of 2015.