In the field of ​​energy models and methodologies, ONS developed an alternative method for calculating the meta-levels at the end of the dry season in the Northeast and North, through a decision support system - contemplating the future conditions of the generator, when the large run of river plants of the Amazon basins are in operation.

It was completed in 2012 by CEPEL, with the support of ONS, the improvement of computational models of medium and short term planning and scheduling of the operation, NEWAVE and DECOMP, to represent the power generation in LNG plants, in which signaling precedes the dispatch within two months, within the logistics of transporting the fuel.

The implementation of dynamic reservoir drawdown routine in hydraulic simulator Hydroexpert was completed with the support of Copel, required to the operation of the reservoir system of Iguaçu River Basin. Given the adoption of Hydroexpert in preparing the Daily Defluxion Program - PDF, part of the Power Operation Daily Program - PDE, the implementation of the hydraulic validation feature of this computational application was initiated this year.

In the area of hydrometeorological forecast, the use of NEURO model associated with the model CPINS in the process of preparing PMO, for inflow forecasting in the incremental stretch between Três Marias and Sobradinho plants, on the São Francisco River, was completed by ONS and authorized by ANEEL.The study of application of the model SMAP for the Parnaíba River basin in the upstream of the plant Itumbiara was completed, and it was submitted to public consultation by ANEEL, in conjunction with the study held in 2011 with this same model to the basin of the Rio Grande basin, in incremental stretches of Marimbondo and Água Vermelha plants.

It is worth mentioning the completion of the project for evaluation of new alternatives to the weather forecast, with the participation of the Center for Weather Forecasting and Climate Studies - CPTEC of INPE and Ceará Foundation for Research and Culture. This assessment included a new parameterization of ETA model currently in use in the process of inflow forecasting for PMO, and the new model BRAMS, which features characterize the type and land use adapted to conditions in Brazil. The study will bring important contributions to the improvement of precipitation forecast adopted in the process of predicting flows through rainfall-runoff models to a week ahead.

At the end of the year, as an additional resource for improving forecasts of weather conditions within the BIPS, ONS implemented the climate forecast model CAM 3.0, from U.S. National Center for Atmospheric Research - NCAR. The implementation of this model by ONS using processors in cloud computing will allow obtaining forecasts of precipitation anomalies in the basins of interest discretized monthly until three months ahead and updated periodically in accordance with the interest of the planning of the operation within the BIPS.

Continuing the implementation of the strategic action of Organon as an assessment tool for secure operation of the BIPS, in 2012 models and improvements added in this program were revised, with emphasis on the construction of a security region for monitoring the operation of 440 kV system in São Paulo.

The database component models for electromechanical simulations of Organon was reviewed, with emphasis on CC link associated with Itaipu, resulting in significant improvement of the program response, compared with the program ANATEM.

The incorporation of the representation of special protection schemes in the calculation of the security area and monitoring violations of criteria of maximum field voltage - and maximum operating time of over-excitation limiters - resulted in significant gains for automating the analysis limits of transmission trunk 765 kV Itaipu.

The monitoring functionality in the security area on portable devices with Internet access resources was made available, provisionally, by the Data Registration for External Relations (CDRE) system - ONS. Preliminary tests were performed to assess the feasibility of using Organon were cloud environment with very promising results.

Throughout 2012, the activities scheduled for deployment of RTDS simulator (Real Time Digital Simulator) to support the operation of the Madeira river plants transmission system were continued. To the team of two engineers was added a new professional whose primary responsibilities were directed to check the conformity of HVDC controllers’ models, as well as supporting studies that will be demanded.

It also held the reception of cubicles-replica of the converters back to back and the dipole controllers manufactured by ABB, associated with the drainage system of the Madeira River Complex generation. This set of equipment was accompanied of RTDS panels, and its installation was held at ONS Central Office, in Rio de Janeiro. After commissioning of this set of equipment, and with the aim of training for their use, ONS technical staff has been trained, involving simulation in RTDS, specific training geared to the operation of ABB equipment and advanced training in the application PSCAD (Power Systems Computer Aided Design) to analyze the transient behavior of the system.

It was concluded in 2012 the stage of research project for development of methodology for medium and long term load forecasting .This step of the methodology allows to exclude the effects of random and non-economic factors such as atypical temperatures, losses in the basic grid and variations in the number of days and holidays, load behavior. Thus, the evolution of the load shall reflect only the economic factors, becoming an important tool for the consolidation of load forecasting.