A Novel Detection Method for Voltage Sags

Ding, Kai; Cheng, Ke; Xue, Xiao; Divakar, B.P.; Xu, Chi; Che, Yulong; Wang, D.H.; Dong, Peng

doi:10.1109/pesa.2006.343108

Cited by 37 publications

(19 citation statements)

References 4 publications

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“…Many techniques for voltage sag detection have been introduced include RMSValue Evaluation and Peak-Value Evaluation. A. RMS-Value Evaluation Method [2], [3], [8] When determining the amount of power available for equipment, AC voltage and current measurements are made. As a result, sag voltages are usually expressed in RMS terms.…”

Section: Voltage Sag Detection Techniquesmentioning

confidence: 99%

Three-Phase PWM-Switched Autotransformer Voltage-Sag Compensator Based on Phase Angle Analysis

Mansor¹,

Rahim

2011

Journal of Power Electronics

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Many voltage sag compensators have been introduced, including the traditional dynamic voltage restorer (DVR), which requires an energy storage device but is inadequate for compensating deep and long-duration voltage sags. The AC-AC sag compensators introduced next do not require a storage device and they are capable of compensating voltage sags. This type of compensator needs an AC-AC converter to regulate the output voltage. Presented in this paper is a three-phase PWM-switched autotransformer voltage sag compensator based on an AC-AC converter that uses a proposed detection technique and PWM voltage control as a controller. Its effectiveness and capability in instantly detecting and compensating voltage sags were verified via MATLAB/Simulink simulations and further investigated through a laboratory prototype developed with a TMS320F2812 DSP as the main controller.

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Section: Voltage Sag Detection Techniquesmentioning

confidence: 99%

Three-Phase PWM-Switched Autotransformer Voltage-Sag Compensator Based on Phase Angle Analysis

Mansor¹,

Rahim

2011

Journal of Power Electronics

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“…There are a numerous of papers that have proposed voltage sag detection methods, such as synchronously rotating reference frame [4], missing voltage technique [5], peak voltage evaluation [6], rms method [7], and time-frequency transformation technique [8]. However, these techniques provide a long voltage sag detection time.…”

Section: Introductionmentioning

confidence: 99%

A fast single-phase voltage sag detection for voltage sag compensation system

Sillapawicharn

2014

TENCON 2014 - 2014 IEEE Region 10 Conference

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This paper proposes a fast single-phase voltage sag detection for voltage sag compensation system. The operation of proposed method is based on synchronously rotating reference frame which provides fast and accurate voltage sag detection. a proposed fast single-phase voltage sag detection uses the differentiator as a (-90)-degree phase shifter to produce an orthogonal AC voltage ( ) V from existing grid voltage ( ) V and convert these voltages to the DC voltages ( , ) d q V V by using of -dq transformation (Park transformation). Finally the sag signal can be generated by these DC voltages ( , ) d q V V . The voltage sag can be recognized by the proposed method in a very short time in every condition of voltage sags. When it is integrated to the voltage sag compensation system, the voltage sag can be compensated in a very short time due to fast detection and the load voltage is slightly affected from the voltage sag event.Index Terms-single-phase voltage sag detection, voltage sag compensation system, SRRF.

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“…There are numerous publications that have proposed voltage sag detection methods and they can be grouped as 1) synchronously rotating reference frame(SRRF)-based, or d-q transformation-based voltage sag detections [10][11][12], 2) instantaneous voltage technique-based or missing voltage-based voltage sag detections [13,14], 3) peak voltage evaluation-based voltage sag detections [15,16], 4) rms evaluation-based voltage sag detections [17,18], 5) time-frequency transformation-based voltage sag detections [19,20], 6) rectified voltage-based voltage sag detections [21] and 7) fractal-based voltage sag detections [22,23].…”

Section: Introductionmentioning

confidence: 99%

An Improvement in Synchronously Rotating Reference Frame-Based Voltage Sag Detection under Distorted Grid Voltages

Sillapawicharn¹,

Kumsuwan²

2013

Journal of Electrical Engineering and Technology

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-This study proposed an improvement in synchronously rotating reference frame-based voltage sag detection under distorted grid voltages. In the past, the conventional synchronously rotating reference frame (CSRRF)-based voltage sag detection was generally used in the voltage sag compensation applications. Its disadvantage is a long delay of detection time. The modified synchronously rotating reference frame (MSRRF)-based voltage sag detection is able to detect the voltage sag with only a short delay in detection time. However, its operation under distorted grid voltage conditions is unavailable. This paper proposed the improvement of modified synchronously rotating reference frame (IMSRRF)-based voltage sag detection for use in distorted grid voltages with very fast operation of voltage sag detection. The operation of the proposed voltage sag detections is investigated via simulations and experimentations to verify the performance of the IMSRRF-based voltage sag detection.

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A Novel Detection Method for Voltage Sags

Cited by 37 publications

References 4 publications

Three-Phase PWM-Switched Autotransformer Voltage-Sag Compensator Based on Phase Angle Analysis

Three-Phase PWM-Switched Autotransformer Voltage-Sag Compensator Based on Phase Angle Analysis

A fast single-phase voltage sag detection for voltage sag compensation system

An Improvement in Synchronously Rotating Reference Frame-Based Voltage Sag Detection under Distorted Grid Voltages

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