| Autor: |
David James Fedirchuk, N. Zhang, K. Narendra, P. Mysore, Vijay K. Sood, R. Midence, A. Mulawarman |
| Rok vydání: |
2011 |
| Předmět: |
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| Zdroj: |
2011 IEEE Electrical Power and Energy Conference. |
| DOI: |
10.1109/epec.2011.6070241 |
| Popis: |
A routine switching event in the Xcel Energy transmission system resulted in sustained oscillations between wind generators and the system connected through a series compensated line. This event led to the development of a new microprocessor based sub-harmonic protection relay that could detect such conditions and take preventative measures. This paper discusses a new technique to detect sub-harmonics in the range of 5 – 25 Hz using current and voltage level detectors, sub-harmonic calculations of individual sub-harmonics and total sub-harmonic distortion factor (TSHD) to generate an alarm and/or trip to isolate the faulty system. Various test cases are presented to illustrate the effectiveness of the new technique. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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