Stand-Alone Merging Units and Process Interface Units in MV Applications
A practical SAMU and process-interface guide covering CT/VT inputs, SV metrology, binary I/O, trip outputs, common modes and lifecycle support.
Virtual I/O Testing and Simulation During IEC 61850 FAT
A safe FAT method for virtual publishers/subscribers, GOOSE/SV fault injection, automation, physical-output isolation and SAT handover.
Engineering a GOOSE Trip and Interlocking Matrix for MV Switchgear
A complete design and assurance template connecting MV protection/interlock cause-and-effect to SCL, network parameters and end-to-end tests.
Digital-Substation Network Failure Modes and Redundancy Verification
A complete fault-injection and evidence program for IEC 61850 network, PRP/HSR, GOOSE, SV and time-system failure modes from FAT to maintenance.
VLAN, Priority and Multicast Engineering for Protection Ethernet Networks
An IEEE 802.1Q and IEC 61850 guide to VLANs, priority queues, Layer-2 multicast, APPID, bandwidth, redundancy and switch acceptance tests.
IEC 61850 Data Models and Logical Nodes for MV Switchgear Bays
A practical IEC 61850-7-4 model for MV breaker, switch, control, interlock, protection, measurements, quality, SCL and validation.
GOOSE Supervision, Test Modes and Fail-Safe Design for Critical Interlocking
A signal-level guide to GOOSE liveness, quality, simulation, unknown-state logic, safe fallback, overrides and negative testing for MV interlocks.
PTP, SNTP and IRIG-B Time Synchronization in Digital Substations
A practical time-architecture guide for SV alignment, protection, event records and SCADA using PTP, SNTP and IRIG-B with failure testing.
PRP and HSR Network Redundancy: Engineering Beyond Zero Recovery Time
A practical PRP/HSR guide covering DAN/SAN/RedBox/QuadBox roles, bandwidth, latency, time, common-mode failures, cybersecurity and proof testing.
Station Bus Versus Process Bus: Boundaries, Benefits and Failure Modes
A functional comparison of station bus and process bus, including separate, hybrid and converged topologies, failure containment and acceptance tests.