ANALYSIS OF IEDs INTEROPERABILITY INSTALLED IN ELECTRICAL SUBSTATIONS OF WATER TREATMENT PLANTS CONSIDERING THE IEC 61850 STANDARD REQUIREMENTS

Abstract

One of the most important inputs for the sanitation industry is the electrical energy used in Water Treatment Plants (WTP) and Sewage Treatment Plants (STP). Energy consumption is quite large in the sanitation industry and these plants are often supplied with high power, sometimes requiring the construction of large energy substations at voltage levels of 34.5 or 138kV. In general, in older electrical substations the design of the command, control and protection system is conventional with the use of electromechanical relays using copper wiring for interlocking schemes and protection logic. On the other hand, in more recent substations, protection devices are already electronic, with greater dependence on network elements, such as switches, fiber optics, Ethernet networks, among others. Therefore, it is necessary to use communication protocols and more modern command, control and protection schemes described and standardized in the IEC 61850 Standard adopting standardized communication protocols and defines the minimum hardware requirements for devices used in electrical substations. In this sense, the present work presents a qualitative analysis of the network architecture that includes the study of data obtained from a substation of the Environmental Sanitation Company of the Federal District (CAESB) with the verification of points of vulnerability in data security (Cyber Security), performance of the data network and validation of the requirements set out in Standard 61850.