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With rapid development of UHV AC and DC transmission systems, the problem of parallel flows emerges in many multi-infeed HVDC receiving-end systems in China. In this paper, an optimization method which coordinates parallel flows and stability of multi-infeed HVDC system is present. An analytical equivalent of multi-infeed short circuit ratio (MISCR) is defined based on power flow model, which considers...
This paper discusses a black-start field test performed with new strategy. The new strategy makes full use of the long time operation capability of pumped storage units in ultra-low load conditions and takes advantage of the double-bar configuration of most electrical stations, with black-start units only supplying the auxiliary load of itself and that of target units, enables a complete separation...
Taking advantages of proportional-integral-differential (PID) control in voltage regulation, and those of linear optimal control in dynamic stability, a new excitation control scheme based on fuzzy logic control is proposed. The method adjusts the weights of voltage regulation tunnel and auxiliary stabilizing tunnel on-line according to different operating conditions by a fuzzy controller, aiming...
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