ATC Enhancement Considering Transient Stability by Optimal Power Flow Control Using UPFC

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  • ＵＰＦＣを用いた最適潮流制御による過渡安定度を考慮したＡＴＣ拡大手法の基礎的検討
  • UPFC オ モチイタ サイテキ チョウリュウ セイギョ ニ ヨル カト アンテイド オ コウリョ シタ ATC カクダイ シュホウ ノ キソテキ ケントウ

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Abstract

With recent development of power electronics technology, power system stability enhancement and optimal power flow control by using Flexible AC Transmission System (FACTS) devices have so far been studied. The FACTS devices to relieve multiple constraints can also make it possible to enhance Available Transfer Capability (ATC) without construction of new transmission lines. In this paper, a new method for improving transient stability by Unified Power Flow Controller (UPFC) is proposed. Then the proposed method is applied to an OPF control method by using UPFC for relieving multiple constraints. The new OPF method is used for enhancement of ATC taking into account Transient stability constraints as well as overload and steady-state stability constraints. The OPF problem is formulated to minimize total capacity of inverters of UPFC. Effectiveness of the proposed method is shown by numerical examples for IEEJ East-10-machine test system.

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