研究目的
Establishing a General Dynamic Testing Signal (GDTS) model which can reflect the typical characteristics of Large Power Dynamic (LPD) loads and investigating a kind of GDTS model called three-phase pseudorandom DTS to measure dynamic errors of different electricity meters.
研究成果
A GDTS model that can reflect the main load characteristics and a three-phase m-sequence DTS were proposed. The test results show that the dynamic signals can be used to test dynamic errors of electric meter.
研究不足
The study focuses on the dynamic errors of smart electricity meters under specific testing conditions and does not cover all possible dynamic load scenarios. The applicability of the GDTS model to other types of dynamic loads may require further investigation.
1：Experimental Design and Method Selection:
The study involves analyzing typical LPD load characteristics, establishing a GDTS model, and generating three-phase m-sequence pseudorandom dynamic testing signals.
2：Sample Selection and Data Sources:
Two kinds of smart electricity meters are selected for measuring dynamic errors.
3：List of Experimental Equipment and Materials:
A dynamic testing current signal generating equipment was designed to generate three-phase DTS.
4：Experimental Procedures and Operational Workflow:
The study includes constructing different sequences for the GDTS model, generating waveforms, and measuring dynamic errors under various conditions.
5：Data Analysis Methods:
The measurement uncertainty was evaluated based on the ISO GUM, and dynamic errors were analyzed in relation to various periods and random fluctuations.
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