Research on Frequency Stability Control Strategy for the Third Line Defense of Sending-End Power System

Abstract:

Regional energy base with large installed capacity, small local power load capacity and great amount of power transmission have been more and more common in China. For this kind of sending end power grid, the 3rd line of defense for frequency stability is crucial. The high frequency generator tripping is an effective emergency frequency control measure. But its setting and configuration mainly relies on operational experience and off-line simulation calculation. An equivalent model suitable for the analysis and setting calculation of high frequency generator tripping is introduced firstly. Based on the model, and aimed at an actual frequency emergency control problem, a scheme for high frequency generator tripping is proposed. Furthermore, a speed-up tripping scheme using df/dt criterion is proposed to optimize the frequency response. Numerical simulations are conducted on real power grid model of Shanxi province to demonstrate the effectiveness and adaptability of this scheme. The setting principle and calculation method of high frequency generator tripping can introduce to similar power grid for reference.

• Periodical: Advanced Materials Research (Volumes 846-847)
• Pages: 329-334
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.846-847.329
• Online since: November 2013
• Authors: Shu Yong Song*, Xin Yuan Liu, Yi Kai Sun, Wen Chao Zhang
• Keywords: Emergency Frequency Control, High Frequency Generator Trip (HFGT), Isolated Power System

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