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Grid connection of distributed generation would have a certain impact on safe and stable operation of receiving-end network, so systematic analysis on it would be significant. The method for comprehensive assessment on effects caused by grid connection of distributed generation on power grid is presented. The assessment system is divided into steady-state operation assessment, reliability assessment,...
This paper proposes a method for the optimal black-start reserve water of pumped storage. When pumped storage provides black-start ancillary service for power system, some capacity in the upper reservoir must be reserved and then the peak-load shaving benefit of pumped storage plant would be influenced. In order to make pumped storage plant bring the largest benefits to power system, a mathematical...
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...
This paper presents a novel group multi-criteria decision-making method for power system skeleton restoration. The proposed method improves the technique for order preference by similarity to an ideal solution (TOPSIS) in supporting group decision-making. This method can comprehensively consider the safety margin and restoration rate of power system, and can be used to support the restoration decision-making...
One of the main functions of pumped storage power station is to provide black-start ancillary service in power systems with a larger proportion of thermal generators. However, the reserve water for black-start has significant influence on the other function of pumped storage power station, such as peak load shifting. Taking black-start benefits and static benefits into account synthetically, a mathematical...
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