Journal
JOURNAL OF ENGINEERING-JOE
Volume -, Issue 17, Pages 4096-4100Publisher
WILEY
DOI: 10.1049/joe.2018.8051
Keywords
power transmission control; commutation; power convertors; power grids; fault diagnosis; power system simulation; power transmission faults; different fault moments; theoretical calculation results; calculation method; critical voltage; DC commutation process; AC system single-phase fault moments; single phase; occurring moments; commutation failures; sudden voltage reduction; post-fault magnitudes; commutation voltages; phase voltage
Categories
Funding
- Key project of smart grid technology and equipment of national key research and development plan of China [2016YFB0900603]
- State Grid Corporation of China [52094017000W]
Ask authors/readers for more resources
This paper takes a close research on the impact of voltage reduction in a single phase as well as its occurring moments on commutation failures (CFs). When there is a sudden voltage reduction in a single phase, the change rule of post-fault magnitudes and phases of commutation voltages is researched theoretically. On the basis of the change characteristic, valves that are most probable to suffer from CFs are carefully elaborated. Moreover, a method for calculating critical voltage of a single phase considering different fault moments is developed. As long as the phase voltage is lower than the critical voltage, it may result in a CF. In addition, the change regularity of critical voltage along with different fault moments and phases is given. All the analysis and theoretical calculation results are validated by simulation in PSCAD/EMTDC.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available