Distance protection closed-loop testing using RTDS
Publish place: Energy Equipment and Systems، Vol: 5، Issue: 2
Publish Year: 1396
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_EES-5-2_009
تاریخ نمایه سازی: 2 آبان 1396
Abstract:
This paper presents a distance protection test procedure by applying the Real-Time Digital Simulator (RTDS) of a power system. RTDS is a tool to design, develop, and test power-system protection. The RTDS enables real-time computation of electromagnetic phenomena with a calculation time step of even 50μs. The hardware allows the import and export of many signals from the simulator to an external real power-system component and, therefore, the so-called closed-loop testing. With this method, it is possible to get an insight into both the elements’ behaviour and the influence of these components on the power-system operation. The testing of a very simple impedance-protection function by the Schweitzer Engineering Laboratories protection relay is explained. Moreover, the effects of a DC offset have been tested on this relay. The test results emphasize the advantage of the RTDS for the determination of actual power-system components’ behaviour in various power-system conditions. The RTDS software, i.e. RSCAD, is used to simulate the power system models.
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Authors
Zahra Moravej
Faculty of Electrical and Computer Engineering, Semnan University, Semnan, Iran
Sajad Bagheri
Young Researchers and Elite Club, Arak Branch, Islamic Azad University, Arak, Iran