Analysis of self-oscillation stability of a pump-turbine in the S-shaped regions of characteristic curves
X W Chen,
X Lai,
H Y Chen
et al.
Abstract:The hydraulic oscillation of pumped-storage power station (PSPS) affects the safe and stable operation of the power station. The S-shaped characteristic curves of pump-turbine may sometimes result in instability in speed-no-load operation. To investigate the instability mechanisms and identify the main factors that affect stability, this paper used the overall matrix method to establish a self-excited oscillation calculation model of a PSPS and analyzed the stability characteristics and influencing factors of … Show more
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