Study on operation characteristics and output capacity of large-scale wind power base transmission system with series compensation

Liu, Chao; Li, Yan; Tian, Xinshou; Su, Yuanyuan; Zhang, Peng-Fei

doi:10.1109/ei2.2017.8245732

Cited by 2 publications

(1 citation statement)

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“…However, as the UHVAC transmission systems are designed for large-scale power bases (mainly are thermal power bases), the specific impact of such high-voltage and bulk-capacity sending out structure on system's dynamic stability is hardly studied. Although some discussions of largescale wind power base transmission systems have been done [10], [11], the scale of wind power base is much less than traditional thermal base, not to mention the very different characteristic of wind power.…”

Section: Introductionmentioning

confidence: 99%

Large-Scale Power Base’s Impact on Low Frequency Oscillation Characteristic in UHVAC Power Transmission System

Jiang

Liu

2019

IEEE Access

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The dynamic stability of ultra-high voltage alternating current (UHVAC) transmission system with large-scale power bases has not been clearly discussed before. This paper studies the low frequency oscillation (LFO) characteristic of UHVAC system through complex torque coefficient method (CTCM) and finds out the reasons why UHVAC system is more vulnerable to LFO problem. It is pointed out that the bulk capacity and long distance make UHVAC system's damping torque coefficient much smaller than conventional system's, which lets UHVAC system's operation point closer to the safety edge and decreases system's dynamic stability. The comparisons between UHVAC system and conventional system in practical multi-machine systems further validate the theoretical analysis. Finally, the suggestions for UHVAC systems are given based on the analysis in the view of dynamic stability.INDEX TERMS Ultra-high voltage alternating current (UHVAC) transmission system, complex torque coefficient method (CTCM), low frequency oscillation (LFO), dynamic stability.

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Section: Introductionmentioning

confidence: 99%