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Modulation of voltage and current signals with low frequency component during power swing creates difficulty in accurate phasor estimation. Sequence component based relaying principles are therefore being affected. In this paper, fundamental and modulating frequency components are incorporated in phasor estimation formulation to improve the accuracy. The method estimates the two frequencies first...
Modulation of voltage and current signals with low-frequency components during power swing creates difficulty in accurate phasor estimation. Sequence component-based relaying principles are therefore being affected. In this paper, fundamental and modulating frequency components are incorporated in phasor estimation formulation to improve accuracy. The method estimates the two frequencies first and...
This research relates to the estimation and analysis of solar irradiance at Indore located in the state of Madhya Pradesh central region of India having longitude 77° 50' east and latitude 22° 44' north. The incident solar irradiance energy which depends the geographical region and weather conditions. The component of irradiance depends upon variation in the global and diffuse solar radiation. In...
This paper proposes a new passive local islanding detection technique for a distributed generation (DG) system connected to a utility grid. In the proposed method the absolute value of angle between the negative sequence components of voltage and current is estimated at the DG end and is used to recognize the islanding condition. The conventional passive methods have the drawback of non-detection...
This paper presents a directional relaying scheme during power swing and single-pole tripping condition using fuzzy logic approach. If any balanced or unbalanced fault occurs during power swing condition, conventional directional relaying algorithm finds limitation due to complex nature of signal. Once a fault is identified as being only on a phase, then the single-pole tripping takes place. During...
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