Design and implementation of a phasor measurement unit using a new measurement technique

Area of Science:

• Electrical Engineering
• Power Systems Analysis
• Signal Processing

Background:

• Modern power systems face increasing complexity due to renewable energy integration.
• Ensuring operational efficacy and continuous operation requires advanced monitoring technologies.
• Phasor Measurement Units (PMUs) are crucial for synchronized monitoring in intricate power grids.

Purpose of the Study:

• To design and implement a novel Phasor Measurement Unit (PMU).
• To utilize a new Sliding Fourier Transform Phase-locked loop (SFT-PLL) measurement technique.
• To enhance the accuracy and dynamic performance of phasor estimation in power systems.

Main Methods:

• Development of a PMU prototype based on SFT-PLL.
• Validation through simulation and hardware implementation.
• Utilizing analog signal conditioning, high-resolution ADC, a Texas Instruments Delfino F28379D platform, and GPS synchronization.

Main Results:

• The SFT-PLL technique demonstrated improved accuracy in magnitude, phase angle, and frequency estimation.
• The PMU prototype exhibited a fast dynamic response during simulated grid disturbances.
• Experimental results confirmed enhanced phasor estimation performance.

Conclusions:

• The proposed SFT-PLL based PMU significantly improves phasor estimation.
• The developed technology enhances the reliability of real-time monitoring in modern power systems.
• This advancement is vital for managing complex grids with high renewable penetration.