Prioritise & design
Rank Digital Use-Cases by ROI and Design the IEC 61850 / DER Architecture Behind Them
We translate the audit findings into a prioritised, bankable roadmap: AMI, ADMS, FLISR and outage-management use-cases are ranked by financial impact, then mapped onto a target IEC 61850 substation-automation and DER-management architecture that DISCOM planning, protection and IT teams can sign off on before detailed engineering begins.
Typical duration · 6-8 weeks
Samples generated 07 Sept 2026, 02:06 am ISTWhat happens in this step
- 01Build a use-case long-list (AMI, ADMS, FLISR, OMS, DER visibility, Volt/VAR) from the baseline audit and DISCOM loss/SAIDI-SAIFI data
- 02Quantify each use-case's CapEx, OpEx, AT&C loss reduction and outage-minute savings to derive NPV, IRR and payback
- 03Rank and shortlist a phased portfolio, sequencing quick-wins against dependencies (e.g. AMI data needed before advanced ADMS analytics)
- 04Draft target-state IEC 61850 substation automation architecture (process bus, GOOSE/MMS, IED mapping) for pilot feeders/substations
- 05Design FLISR and DER-management logic schemes, including reclosing sequences, sectionalising points and DER hosting-capacity constraints
- 06Validate architecture against cybersecurity (IEC 62351) and telecom backhaul (fibre/RF/cellular) options with the DISCOM's IT/OT teams
- 07Present the ranked portfolio and architecture in a joint workshop, capturing sign-off comments for the next design-freeze stage
What we need from you
- Baseline audit report and asset/feeder inventory from Step 01
- SAIDI/SAIFI, AT&C loss and revenue-collection data by feeder/division
- Existing SCADA/RTU/AMI vendor documentation and protocol lists
- DISCOM CapEx ceiling and any state regulatory (SERC) approval constraints
- DER penetration forecast (rooftop solar, EV charging) by feeder
- IT/OT network topology and cybersecurity policy documents
- Stakeholder availability for a 1-day prioritisation workshop
Worked example (anonymised, illustrative)
Urban Feeder Modernisation Programme · 1,200 MVA distribution circle, ~85 feeders · Western India
Illustrative DISCOM circle with high AT&C losses and manual fault restoration, evaluating AMI/ADMS/FLISR investment sequencing.
Sample deliverables from this step
Every sample below is analyst-written and anonymised for illustration — structure and depth mirror our real deliverables; figures and names are not from any client engagement.
Illustrative · Growthifye-preparedUse-Case Financial Prioritisation Matrix
Ranked list of digitalisation use-cases scored on CapEx, annual benefit, payback and strategic fit, feeding the phased investment roadmap.
Sample excerpt · Use-case ranking (illustrative, INR Cr) — illustrative figures
| Use-case | CapEx | Annual benefit | Payback (yrs) | NPV rank |
| FLISR - 20 priority feeders | 18 | 6.5 | 2.8 | 1 |
| AMI - urban 3-phase consumers | 42 | 9.0 | 4.7 | 2 |
| ADMS core (OMS+DMS) | 35 | 7.2 | 4.9 | 3 |
| Volt/VAR optimisation | 12 | 2.1 | 5.7 | 4 |
| DER visibility platform | 9 | 1.4 | 6.4 | 5 |
- Benefits include loss reduction, SAIFI penalty avoidance and reduced manual switching cost
- Ranking reviewed jointly with DISCOM finance and O&M heads before freezing scope
Illustrative · Growthifye-preparedTarget IEC 61850 Substation Automation Architecture
Single-line and communications architecture for pilot substations showing IED classes, process/station bus, GOOSE messaging and gateway integration to ADMS.
Sample excerpt · IED and protocol schedule (excerpt) — illustrative figures
| IED tag | Function | Protocol | Bus | Vendor-agnostic class |
| P-101 | Feeder protection | IEC 61850-8-1 GOOSE | Station bus | IEC 61850 logical node PTOC |
| M-201 | Metering/AMI head-end | DLMS/COSEM | WAN | AMI concentrator |
| R-301 | Recloser control (FLISR) | IEC 61850 MMS | Station bus | Logical node XCBR/RREC |
| G-401 | Substation gateway | IEC 61850/DNP3 | Station-ADMS link | Gateway/RTU |
- Architecture kept vendor-agnostic to preserve competitive tendering at next stage
- Process-bus option flagged for future digital-substation phase, not mandatory for pilot
FLISR and DER-Management Logic Scheme
Fault-detection, isolation and restoration sequencing logic combined with DER hosting-capacity checks to avoid unintended islanding or reverse-power trips.
Sample excerpt · FLISR restoration targets by feeder segment (illustrative) — illustrative figures
| Feeder segment | Fault type | Isolation time | Restoration path | DER hosting limit |
| F-12A | Single-phase fault | <4 sec | Auto-tie to F-14 | 1.8 MW rooftop |
| F-12B | Three-phase fault | <6 sec | Manual crew dispatch | 0.6 MW rooftop |
| F-18C | Transformer fault | N/A | Load transfer to adjacent DTR | None (industrial feeder) |
| F-22A | Recloser lockout | <8 sec | Auto-tie with DER curtailment check | 2.4 MW rooftop |
- DER hosting limits derived from preliminary load-flow screening, refined in Step 03
- Logic scheme designed to be protection-relay agnostic for tendering flexibility
Phased Digitalisation Roadmap & Business Case
Consolidated report sequencing the prioritised use-cases into 18-36 month phases with indicative budgets, dependencies and regulatory filing needs.
Sample excerpt · Roadmap phasing summary (illustrative) — illustrative figures
| Phase | Duration | Use-cases | Indicative budget (INR Cr) | Key dependency |
| Phase 1 | 0-9 months | FLISR pilot, 20 feeders | 18 | Recloser procurement |
| Phase 2 | 6-18 months | AMI rollout, urban consumers | 42 | Head-end system tender |
| Phase 3 | 12-24 months | ADMS core deployment | 35 | SCADA data migration |
| Phase 4 | 18-36 months | DER visibility & Volt/VAR | 21 | AMI data availability |
- Budget figures illustrative pending detailed BOQ in Step 03
- Roadmap structured to align with SERC capex approval cycles
Outcomes
- A financially ranked, board-ready use-case portfolio replacing ad-hoc vendor pitches
- A vendor-agnostic IEC 61850 architecture that de-risks future substation automation tenders
- FLISR and DER-management logic validated against real feeder and hosting-capacity data
- A phased roadmap with indicative budgets ready for detailed engineering and RFP drafting in Step 03
Questions clients ask
How do you rank AMI against FLISR when their benefits are measured differently (loss reduction vs SAIDI)?
We normalise all benefits to an annualised INR value using DISCOM-approved tariffs, loss-reduction targets and regulatory SAIDI/SAIFI penalty structures, allowing direct NPV/IRR comparison across use-cases.
Does the IEC 61850 architecture lock us into a specific protection-relay vendor?
No. We specify logical nodes, protocols and interoperability requirements rather than vendor part numbers, so the design remains open for competitive tendering at the specification stage.
Can DER hosting-capacity limits change once more rooftop solar connects?
Yes, the limits in this step are preliminary screening values. Step 03 (Architect & specify) runs detailed load-flow and protection coordination studies to finalise DER-management thresholds before tendering.
