ABSTRACT:
With the increasing demand for electrical power, power utilities are investing in massive substations with a complex busbar arrangement to reliably facilitate the dispatch of electric power. The advent of digital secondary systems (DSS) technology, such as IEC 61850 GOOSE and Sampled Values, has optimized the installation, operation maintenance, and expansion cost for the relay protection and control system within the substation. Given the high importance of these systems, utilities and manufacturers have a strong interest in testing busbar arrangements before deploying solutions in the field. This presentation will cover a hardware-in-the-loop (HIL) test strategy using RTDS technology to test and verify busbar protection solutions utilizing DSS technology.
SEL has a complete solution to support various protective relay schemes using digital secondary systems, including distributed bus bar protection for complex and large busbar arrangements. Recently SEL has extended support for offering busbar protection up to 21 bays with a digital secondary system. Offering such a solution requires regress testing in a complete substation environment, including exchange of information for successful operation of the protective relay. So, this requirement is where RTDS HIL simulators have helped SEL to develop, build and mimic the complete substation environment for benchmarking the protective relay schemes.
This presentation will cover briefly digital secondary substations, IEC 61850 Sampled Value based technology, busbar differential protection, building the test network and HIL test setup. The focus of the presentation would be to demonstrate how the hardware and software from RTDS were used for building the HIL simulation environment for testing busbar protection in a substation with digital secondary system.
Presented by Md Aamir Rahmani, Schweitzer Engineering Laboratories