1. Measurement-based voltage stability assessment for load areas addressing n−1 contingencies.
- Author
-
Fengkai Hu, Kai Sun, Di Shi, and Zhiwei Wang
- Subjects
- *
ELECTRIC potential measurement , *ELECTRICAL load , *AUTOMATION of interconnected power systems , *ELECTRIC power distribution , *ELECTRIC controllers , *VOLTAGE regulators - Abstract
This study proposes an online measurement-based method for n−1 voltage stability assessment on a load area by means of an equivalent system of N + 1 buses introduced by Hu et al. to represent N boundary buses of the load area and the external system. This method utilises real-time synchro-phasor measurements on N boundary buses and online state estimation on the load area to analyse n−1 sensitivities for equivalent transfer admittances and power flows by means of a modified line outage distribution factor in order to estimate the voltage stability margin of power transfer to each boundary bus under an anticipated n−1 condition. The method is demonstrated on the Northeast Power Coordinating Council 48-machine, 140-bus power system. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF