Configuration drift detection - 90-second rollback | SUBNET

Stop unauthorized changes before they become a mis‑trip.

About PowerSystem Center

PowerSystem Center (PSC) is a multi-function IED management platform that enables critical infrastructure asset owners to securely and centrally manage their large install base of many different intelligent electronic devices (meters, relays, RTUs, etc) deployed throughout their entire transmission and distribution system.

Core Platform Capabilities

NERC CIP Intermediate System for IED Access Control
Unified Relay Event File Collection and Archiving
Unified Asset Monitoring
Unified Data Historian Interfaces

Key Benefits

Ensure compliance with regulatory requirements
Integrate all devices, regardless of manufacturer or model
Eliminate human performance issues and errors
Protect your existing device investment

Used by dozens of the largest T&D companies in the US, PSC provides a central source of truth for all your devices with automated baseline monitoring, remote access control, and automatic scheduled password changes.

Who it serves

Built for Grid Operators who fear hidden setting edits.

Problem in the field

Unauthorized or accidental changes shouldn't put the grid at risk. Settings drift between crews and outages. Baselines live in folders with no history.

How PSC helps

PSC monitors device settings against approved baselines and alerts on any delta. When needed, you can restore the last approved version in a single step with approvals enforced. Baselines are captured per device and per firmware where supported. PSC compares current reads to the baseline on a schedule or after work completes. Write actions require named user approval and MFA. Every action records who did what, when, where, and why, with artifacts attached.

Safe rollback

Rollback is safe and traceable. PSC pushes the last approved 'Good' configuration to the device and verifies the result. If a step fails, PSC pauses the job and follows the defined recovery plan. Evidence is ready to export by substation, device class, or time window.

Proven impact

Restores devices in <90 seconds, avoids hours of fault hunting.

Evidence and control

Logs show artifacts and diffs tied to users and assets. Evidence is ready to export by substation, device class, or time window.

Frequently asked questions

What changes are tracked?

PSC monitors all device configuration parameters including protection settings, communication settings, logic equations, and operational parameters. The specific parameters tracked depend on device capabilities and can be customized per device class or substation requirements.

How fast is detection?

PSC can detect configuration drift within minutes of a change, depending on your monitoring schedule. Real-time detection is available for devices that support event-driven notifications. Scheduled monitoring typically runs every 15 minutes to 4 hours based on criticality.

How are baselines approved?

Baselines are established through a formal approval workflow. Protection engineers review and sign off on configuration snapshots, which are then locked as the 'golden' baseline. Changes to baselines require the same approval process with full audit trails.

Can I see what changed?

Yes, PSC provides detailed diff views showing exactly what parameters changed, their previous values, current values, and timestamps. Each change is attributed to the user who made it (when available) and includes the method used (local HMI, SCADA command, etc.).

What if rollback fails?

If automatic rollback fails, PSC logs the failure reason and pauses further attempts. The system generates an alert with diagnostic information to help engineers troubleshoot. Manual intervention may be required, but PSC retains all baseline data for recovery.

Supports evidence for NERC CIP‑010 configuration change management.

Ready to stop configuration drift?

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