R&D Magazine: CHESF improves alarm system for diagnosing faults

CLIC Energia publishes the third of 30 projects selected for the 4^th Edition of R&D Magazine, launched 8/17, during the VI Congress on Technological Innovation in Electrical Energy (CITENEL) and the II Energy Efficiency Seminar in the Electric Sector (SEENEL), held in Fortaleza (CE).The third article reports on the project developed by Companhia Hidro Elétrica do São Francisco (CHESF) to improve the smart processing system for alarms for diagnosing faults in electric grids.The articles can be consulted in their entirety here (R&D Magazine 4^th Edition).The onsite publication accompanies the order used in the magazine.The objective is to show society the results achieved with R&D projects.Read more(GL/FA).

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Company improves alarm treatment system in electric grids

Improving the Smart Alarm Treatment System (SmartOne) created previously for the automatic diagnosis of faults in electric grids using a computer tool was the objective of the project presented by Companhia Hidro Elétrica do São Francisco S/A (CHESF) and the Federal University of Campina Grande (UFCG).Initial demand for this tool stemmed from the difficulty in managing large electro-geographic areas, an operation carried out with the aid of a control and supervision system that emits alarms that signal grid behavior.However, it is known that the analysis of a large volume of alarms in critical situations is a constant challenge, since this procedure increases diagnosis time and operator reaction.The system was implemented in every CHESF operation center system, but the need for improvement was detected, which justified conducting a new R&D project, with the elaboration of SmartTwo.With the new study, it becomes possible to present the occurrences of the electric power system in a summarized and clear manner, eliminating the number of excess alarms presented to the operator, to increase efficiency in the decision-making process to reestablish power shortages, with possible reductions in the amount of time transmission is unavailable, and in outages and customer service.
The importance of the solution can be verified during an occurrence in the CHESF subsystem that generated more than five thousand alarms in the supervisory control system.With the use of SmartTwo, the occurrence was summarized to 18 diagnoses and one root cause.The system is in its operational phase at the company’s East System Regional Operation Center (CROL) in Recife and the researchers continue to conduct monitoring to attest the proper operation of the tool.

Technical data sheet
Company:Companhia Hidro Elétrica do São Francisco (CHESF)
Title:SmartTwo – Evolution of the Smart Alarm Processing System
Cycle:2004/2005
Investment:R$ 645,954.63
Execution:Federal University of Campina Grande (UFCG)