AS-IS Existing System 9.90MWh Shipment 2019
40ft Containerized BESS × 9

TO-BE Capability Component 2.61 MWh Add Add Battery Box x 12
0.261 MWh / cabinet

Switching field
CUTOVER ZONE

Isolated Border / ISOLATION BOUNDAY

SYSTEM RETROFIT & EXPANSION System Retrofit & Express

In the already established system boundaries,
Revertable, verifiable
Rehabilitation and expansion

Minimal shutdown risk control interface compatibility verifiable delivery

Evidence cockpit & nbsp; EVIDENCE COCBIT

TC-DEMO-PROJ-RETRO-2610

Type of project System Retrofit & Expansion

Original system capacity 9.90MWh

Add Capacity 2.61MWh

Switch Window 4.0 hours

Implementation time 2025-05-12

Existing system (maintained) EXISTING PATHS

Change / Add Range CHANGED / NEW SCOPE

ISOLATION ONLY

Toggle field CUTOVER ZONE

1 Survey of the status of existing systems AS-IS

List of assets (partial)

Battery systems	40ft container x 9
PCS	1.25MW × 6
EMS	TC-EMS-3000 V2.3.1
BMS	TC-BMS-3000 V2.1.8
Pressure system	10kV ringboard x 11
Cooling system	Liquid chiller team x 9
FIRE FIGHTING SYSTEM	Gas extinguisher + smoke + temperature

Interfaces and protocols

BMS-EMS	Modbus TCP
EMS-PCS	IEC 61850 MMS
EMS-SCADA	OPC UA
Time Sync	NTP / GPS

Capacity and operation

Scale Capacity	9.90MWh
Available capacity	9.21MWh(SOH 93.0%)
Original PCS Power	7.50MW
Maximum charge power	7.50MW
Maximum discharge power	7.50MW

Operational limitations and risks

PCS 08 Run temperature rises high
Some old BMS points are inconsistent with current standards
There is a historical compatibility problem with inter-chamber communications
Switch window requires less than 4 hours

2 Target structure TO-BE

Add Capacity

Add Batteries	12 (0.261 MWh / cabinet)
Add Capacity	2.61MWh
Total expanded capacity	12.51MWh
Availability after expansion	11.60 MWh (target 94% ≥)

Structure and interface adjustments

PCS	Add 1.25 MW x 2
EMS	Maintain the main system and expand the new equipment model
BMS	Add BMS Subnet Access
Pressure system	Add Feed 2 Back
Cooling system	Add liquid chiller team x 2
FIRE FIGHTING SYSTEM	Add separate partitions and access to the original fire system
Available capacity	10.00MW / 12.51MWh

3 Multi-professional differences and impact matrix DIFFERENCE / IMPACT MATRIX

Professional field	Variance/change of content	Scope of impact	Risk level	Mitigation	Validation of evidence
Electrical	Add PCS, Outboard, Direct Flow	Electrical single, protective, metrology	High	Load calibration, protection and containment.	Testing reports, consolidation of records
Communications	Add BMS/ PCS access, fibre-optic expansion	Networking, bandwidth, redundancy	High	Network segment, QoS, redundant links	COMMUNITY TESTING, DISTRIBUTION RATE REPORT
Control	EMS Point Table Extension, Control Strategy Adjustment	Dispatch, data, and interlocking	High	Strategic simulation, alignment and event review	Policy evaluation, simulation data
Thermal management	New liquid chiller, pipe extension.	Dispersive capacity, flow balance	Low	CDF review, flow balance test	Flow / Temperature Test Record
Fire	New fire-fighting partitions and associated interfaces	Detect, connect, link.	High	Fire protection design, connection test	Linked test logs
Wall / Built	New base, quarantine fence.	Heavy bearing, passage, fire-proof partition	Medium	Review carried out, fire zonation adjusted	Structural acceptance, blocking records
Interface	Networking point capacity change, communication fit	Networking, protection, movement	High	Short-circuit calculations, protection review	Computation books, system reports
File/ Data	Charts, asset desk accounts, table updates	Full process document consistency	Low	Version control, cross-read	List of documents, proofreading reports

4 Switch Project Design CUTOVER ENGINEERING

Stop window	4.0 hours (02:00-06:00)
Switch power.	400kVA emergency generator x 1
Work permit	work ticket x 12, operating ticket x 18
Isolation Point	DC 16, AC 12
Switch order	The original system drops and separates.
Keep it steady.	HP-1 / HP-2 / HP-3 / HP-4
Return trigger condition	Either key authentication failed/ protection anomaly/ communication interrupted
Backback recovery time	2.0 hours

5 Compatibility of old and new systems COMPATIBILITY & INTEGRATION

BMS Protocol	Modbus TCP (reserved)
EMS-PCS Protocol	IEC 61,850 MMS (maintenance)
Address/ Point Map	Add a new tabulation and maintain the original name system
Solidware Version	BMS V2.1.9 / PCS V1.6.4 / EMS V2.3.2
Control of command behaviour	Power setting, limit flow, locking, repositioning logic.
Reports and incidents	Rating mapping, plant uniform display
Data continuity	Keep historical data and continuous mapping of new data
Compatible conclusions	Toggle can be implemented by compatibility verification

6 Phased installation Online production environment

1. Field survey and positioning

Border confirmation, route review, quarantine range marking.

2. Land-building and infrastructure preparations

Basic construction, pre-burial, load and size review.

3. Placing and installation of equipment

Battery cabinets, PCS and electrical distribution equipment are in place in stages.

4. High and low pressure and pre-positioning of communications

Pre-enforcing cable and network work was completed prior to the shutdown.

5. Original system validation

Maintain existing systems and complete pre-interchange baseline confirmation.

6. Sub-sector production and operation

Sectors are online and segmented to reduce overall downside risk.

7 Switch Timeline CUTOVER TIMELINE

T-30min Pre-check

00:00–02:00

System stabilization check
Protect Parameter Confirm
Communication link confirmed.
Operator / Tool Ready
HP-1 precheck completed

Evidence: System List & Signature

T-30min isolation

02:00–02:30

We'll stop in order.
DC isolation at 16 points
Communication isolation 12 places
Lock card
HP-2 Segregation confirmed

Evidence: Segregation forms

Switch SWITCH

02:30–03:30

New Device Access
Cable / fibre optic connection
Organisation
Control interface check
HP-3 Switch complete

Evidence: Construction records & photographs

T+00min Authentication

03:30–04:30

Electron sequence execution
Communications coordination
Function and Protection Test
Data consistency checks
HP-4 validation complete

Evidence: Test report

T+60min RELEASE / ROLLBACK

04:30–06:00

Project Run Load
Performance baseline match
No anomalies in publishing run
Unusual.
Restore to AS-IS Status

Evidence: Run records / Back logs

8 Pre- and post-reform performance comparisons BASELINE VS POST-RETROFIT

Indicators	Pre-reform (AS-IS)	Modified (TO-BE)	Change
Scale Capacity	9.90MWh	12.51MWh	+2.61MWh
Available / SOH	9.21MWh / 93.0%	11.80MWh / 94.3%	+2.59MWh
Maximum charge power	7.50MW	10.00MW	+2.50MW
Maximum discharge power	7.50MW	10.00MW	+2.50MW
System efficiency	93.1%	93.4%	+0.3pp
System availability (30 days)	99.32%	99.41%	+0.09pp
Average number of daily cycles	1.42	1.48	+0.06
Temperature differential (battery module)	ΔT ≤ 5.2°C	ΔT ≤ 4.1°C	Optimization

Post-embracing system rated capacity increased to 12.51 MWh.
The original system maintains a business logic and the new system is configured compatible.
Switch to perform performance, heat management, efficiency and power response validation.

Power curve (typical day)

Efficiency Curve

Temperature Distribution

Volume comparison

9 Project evidence TC-DEMO-PROJ-RETRO-2610

AS-IS Total plane (before modification)

TO-BE Total plane (modified)

Capability completed (field scene)

Operational evidence (platform screenshot)

Capacity 12.51MWh

Power 10.00MW

SOC 53.7%

Run Status &Normal

Alarm 0

10 Delivery and handover DOCUMENTATION & HANDOVER

Change records

MOC List
Change impact assessment
Approval records

DWG

Maps and Documents

Red line drawings
Completed drawings
Interface / Wire

ASSET

Asset desk accounts

Device table update
Serial number/ version
List of spare parts

CFG

Points and Parameters

Table V1.2
Parameter Matrix
List of full values

TEST

Test report

Plant testing
Field tests
SAT report

TRN

Training and Transfer

Transport
Operations manual
Transfer of confirmation forms

Project plan and implementation report Risk list and control Switch Record Test Record Performance baseline report Report on capacity statistics List of spare parts Transport Recommendations

Discuss retrofit and expansion boundaries

Status inventory, retrofit assessment, switching programme, risk assessment, system validation and safe return to efficient operation.

In the already established system boundaries, Revertable, verifiable Rehabilitation and expansion