Feature Extraction of AR as a Performance Index for Load Frequency Controls of Interconnected Power Systems

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  • 負荷周波数制御の性能指標ARの特徴抽出
  • フカ シュウハスウ セイギョ ノ セイノウ シヒョウ AR ノ トクチョウ チュウシュツ

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Abstract

Recently, the evaluation of control performances of interconnected power systems has become an important issue with respect to individual load frequency controls. Several performance measures are in practical use such as Area Control Error (ACE), Mutual Aid Criterion (MAC) and Control Performance Standard (CPS). Area Requirement (AR) is alternative expression for ACE, where AR = -ACE. However, the characteristics of these indices have not been sufficiently studied as far as the authors know. Specially, this is the case for their dynamic behavior against random load disturbances. <br>This paper investigates the performance index, AR, through analysis of two-area systems. Major dynamic elements of interconnected systems affecting the frequency are taken into account to investigate responses of the system against load disturbances. The analysis shows that, when two systems are interconnected, the smaller system tends to require more effort of control against load disturbances to keep the same value of the performance indices.

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