Machinery & Energetics

Nowadays, it is important to achive the desired energy efficiency of power supply systems by improving the quality, reliability of transmission and generation of accurate precise time instants for continuous monitoring of the stability of power grid parameters with real-time scale. The goal of the work is to investigate modern solutions for the transfer of synchronization information using IP-based technologies and optimize for the speed the phase-locked loop of frequency synthesizer, which will improve the quality of generating the exact time instants. On the basis of the linearized model of a closed system of automatic regulation of the synthesizer of labels of the exact time and the use of the optimization method on the basis of the maximum principle by academician L. S. Pontryagin obtained in the analytical form the speed-optimal control law and proposed its implementation using an adaptive digital phase discriminator (PD) The use of adaptive digital PD, which is protected by the patent of Ukraine for invention, in the synthesizer of precise time marks provides optimal control of the shape of the phase discriminator (PD) characteristics, the minimum duration of the transient process and the improvement of the quality indicators of the generated exact time marks. The transfer of synchronization information by the existing IP networks based on the modern PTP protocol will enable reliable provision of integrated power supply systems with timestamps with accuracy class T5 in accordance with the requirements of IEC 61850-90-5.

power supply, Smart Grid, timestamps, synchronization, PTP protocol, auto-tuning, optimization, performance, adaptive digital phase discriminator