Distributed Synchronized Monitoring for System Disturbance Analysis in 500/220 kV Networks
Synaptec DES creates a distributed layer of synchronized current and voltage measurements for spatiotemporal analysis across geographically separated power-system nodes. It helps engineers reconstruct the sequence of a disturbance on one common time base and correlate the results with existing SCADA/EMS, PMU/WAMS, protection, remedial-action, and disturbance-recording systems.
Objective and practical result
When a system disturbance occurs, changes in network parameters must be compared at several remote locations. Engineering analysis must establish where the earliest change was recorded, how current, voltage, active and reactive power, frequency, and phase relationships then changed, and in what sequence adjacent nodes and automation responded.
DES does not automatically declare a root cause. It provides a synchronized measurement set that supports an engineering-confirmed sequence:
- pre-disturbance operating state;
- first registered change;
- propagation through the network;
- response of adjacent nodes, protection, and remedial-action schemes;
- post-disturbance operating state.
Basic measurement channel
The measurement chain is: CT/VT → Passive Secondary Converter (PSC) → single-mode optical fiber or OPGW → DES Interrogator → synchronized digital measurements.
The remote PSC is passive. It requires neither local power nor active electronics at the monitored asset. Signal digitization, timestamping, and preparation for data transmission are centralized in the DES Interrogator.
