Distributed Measurement Device Sampling Phase Synchronization
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Solution Overview
Problem
Existing methods for synchronizing measurement devices in an electric power grid, such as using GPS or a master/slave configuration, lead to increased costs and reduced flexibility, especially when dealing with faults or changes in the number of devices.
Innovation Solution
A system where measurement devices generate and synchronize a sampling phase through mutual communication, allowing each device to converge to a common sampling phase without a central management device, using an internal value generator and communication unit to adjust sampling phases based on received values from other devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS or master/slave configuration is used to synchronize measurement devices, then measurement timing synchronization is achieved, but system cost increases
Solution Approach 1:
Each measurement device autonomously generates its own sampling phase and adjusts it based on received phases from other devices, eliminating the need for external GPS or centralized master device control. The system serves itself through distributed mutual adjustment.
Solution Approach 2:
The invention combines the phase generation and phase adjustment functions into each individual measurement device, rather than separating these functions into dedicated external systems. This integration reduces overall system complexity and cost.
2Measurement precision
If GPS or master/slave configuration is used to synchronize measurement devices, then measurement timing synchronization is achieved, but flexibility in handling device faults or changes is reduced
Solution Approach 1:
The system dynamically adapts to changes in the number of devices and handles faults automatically through continuous mutual phase adjustment. When devices are added or removed, or when faults occur, the remaining devices automatically re-synchronize without requiring system reconfiguration.
Solution Approach 2:
The sampling phase parameter is continuously adjusted by each device based on received phases from other devices. This dynamic parameter adjustment enables the system to adapt to changing conditions, device failures, or additions without manual intervention.
3Measurement precision
If a central management device is provided to control measurement timing, then synchronized measurement is achieved, but system scale increases
Solution Approach 1:
The centralized phase control function is segmented and distributed to each individual measurement device. Each device independently generates and adjusts its own sampling phase based on mutual communication, eliminating the need for a single centralized management device.
Solution Approach 2:
Each measurement device autonomously manages its own sampling phase without requiring external control from a central management device. The distributed self-service approach reduces system scale while maintaining synchronization.
Data Source
AI summary
A measurement device that performs a predetermined measurement task together with a plurality of other measurement devices is provided. This measurement device is provided with a sampling phase generator for generating a sampling phase for instructing a timing of sampling, and a communication unit for communicating with at least one of the plurality of other measurement devices. The communication unit transmits the sampling phase generated by the sampling phase generator to at least one of the plurality of other measurement devices. The sampling phase generator is configured to generate a third sampling phase, using an operation that is based on a generated first sampling phase and a second sampling phase received by the communication unit from at least one of the plurality of other measurement devices.