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A new method of evaluating system margin under various system constraints

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3 Author(s)
Kurihara, I. ; Central Res. Inst. of Electr. Power Ind., Tokyo, Japan ; Takahashi, K. ; Kermanshahi, B.

This paper presents a concept of system margin for evaluation of adequacy of a composite power system. It can be a useful index for planning a desirable power system. An efficient methodology to calculate maximum supplying capability is introduced. It uses DC load flow analysis and linear programming to obtain a solution which is approximate but accurate enough for first stage planning studies. The proposed method can evaluate the power system margin under various constraints which consist of power flow, frequency in case of system separation, synchronous stability and voltage stability. The validity and effectiveness of the developed methodology is confirmed through the simulation of a model system.

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Power Systems, IEEE Transactions on  (Volume:10 ,  Issue: 4 )