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In the integrated power supply systems SMART-Grid, energy effici-ency, reliability, and survivabilityare ensured, to some extent, by continuous monitoring of the stability of parameters with reference to real-time signals. In accordance with the ІЕЕЕ С37-238-2017 standard, in order to provide power supply system with the time stamps, it is necessary, with respect to the concept of intelligent power sys-tem SMART Grid, to develop and implement the means for reproducing accurate time stamps with a microsecond accuracy. A protocol, which is capable to meet these re-quirements and does not require the development of a dedicated power system is the PTP protocol. The developed state standard of Ukraine DSTU IEC / IEEE 61850-9-3: 2018 defines a number of characteristics of the PTP protocol for both energy and other profiles. A full standardization of PTP protocol in Ukraine requires a development and adoption of the following document-based standards as the state’s ones: IEEE Std 1588 ™ — 2008 or IEC-61588: 2009, IEEE C37.238-2017. The appropriate schemes have been developed for testing a domestic complex of the US-1588M and US-1588S devices with the use of PtpMon2 software. During the tests, it is envisaged to perform short-term and long-term measurements of time cha­ -racteristics of the synchronization signals generated at the output of US-1588S de-vice. The measurement results are presented as the Time Interval Error (TIE) and Maximum Time Interval Error (MTIE), which is calculated as a maximum value of the TIE array at a given measurement interval by using v1 of the PTPmon2 software. Also, we investigated the complex US-1588, which provides the transmission of accurate time stamps’ signals using the PTP protocol. According to the results of experimental studies, the obtained accuracy of time stamps transmission does not exceed 1  μs, which meets the requirements of the IEEE S37-238-2017 standard to the energy profile of PTP.

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The paper discusses a multichannel monitoring device with a speed-optimal phase-locked loop system, which, by performing simultaneous measurements of several clock signals against the reference one, processing and transmitting measurement results by an IP-network in real time, increases the accuracy and precision of providing time synchronization signals for SMART Grid energy system. Analytical expressions where established to determine the conditions under which in the optimal system of phase-locked loop has no influence on the transient process of limiting the periodic static characteristic of the phase discriminator. Experimental studies have confirmed meeting the norms of the European standard ETS 300 462-4 for the time parameters of the reference signal generated by the phase-locked loop system, which is optimal in terms of speed, and also demonstrated the effectiveness of the proposed implementation of the device for multi-channel monitoring of time synchronization signals for SMART Grid of power systems. References 12, figures 7.

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