Microgrid & Containerized BESS

Toggle and expand energy systems between grids and islands

PV, wind, energy storage, generators and distributed loads are integrated into the park, with millisecond switching, layer control and energy optimization between the grid and the island, supporting the continued operation of key loads and the energy autonomy of the park.

View Design Scheme Five-State Operation State

Networking capability on both sides

Integrated access to photovoltaic, wind, storage and flexible loads.

Black Start and Island Capability

Supporting the rapid restoration of critical loads and local autonomy.

MET Optimization

Optical voltage, wind power, energy storage, diesel power coordinated.

Layer protection and control

From equipment to the network, a layer of autonomy and chain control is achieved.

Microgrid assets and borders

Microgrid site with storage containers, substation, PV array, and wind turbines

02 / Status Machine Five-state operating machines (same set of assets, different operating status)

Networking

Trigger condition: Normal connection
Right of control: MGC-A Master
Load Status: All loads online
Standby capacity: 2.0 MW(16%)
Exit Conditions: —

Plan separation

Microgrid status as planned for separation

Trigger condition: Planned overhaul/ schedule command
Right of control: MGC-A Master
Load Status: Load smooth transition
Standby capacity: 2.2 MW(18%)
Exit Conditions: Separation complete.

Unplanned island

Trigger condition: Network failure / protection action
Right of control: MGC-A Master
Load Status: Scalp load
Standby capacity: 1.8 MW(15%)
Exit Conditions: System stability

Black Start

Trigger condition: The whole station is out of power.
Right of control: MGC-A Master
Load Status: Gradual recovery of critical loads
Standby capacity: —
Exit Conditions: Critical load recovery

Reconnect

Trigger condition: Re-stabilize the network.
Right of control: MGC-A Master
Load Status: Gradual convergence of loads
Standby capacity: 2.0 MW(16%)
Exit Conditions: Synchronization gate complete.

Power path. Normal Control / Data Protect / Chain

Microgrid stability comes from coordinating power, energy, and control time scales

Achorebo class <20ms

Protection and failure clearance, rapid current control and equipment cascade locks.

Relay protection/ quick control

milliseconds 20ms–200ms

The transformer reacts quickly, the voltage supports, power rings and inertial response.

PCS / Transform Control

Second 200ms–10s

Frequency, voltage recovery, one FM and rapid power coordination.

MGCC Rapid Control

min 10s–30min

Energy balance, optimization of movement, load recovery and energy storage power correction.

EMS / Energy Management

Hour >30min

Plan movement, capacity planning, demand forecasting and economic performance.

Planned / Forecast

1 ms 10 ms 100 ms 1 s 10 s 1 min 10 min 1 h

03 / Net I'm looking for the economy, I'm going to keep the island stable -- the same set of assets.

Networking: economic and binding optimization

Target: Minimize operating costs, meet netting constraints and plans

¥126,800 Cumulative daily cost of control

9.2 MW Projected peak load

48% Renewable energy penetration

6.0 MW Power purchase ceiling

Load
Photovolt
Wind
BESS Load/Play
Net

Iconic Curve . Non-existent data

Operation of the island: stability and security priority

Target: System frequency / voltage maintained and critical load power provided

49.5–50.5 Hz Frequency bandwidth

0.95–1.05 pu Voltage bandwidth

≥15% Standby capacity

Available Black Start

Critical load
Non-critical load
Distributive Power
BESS Power discharge
Team Output

Iconic Curve . Non-existent data

04 / Event Black Start An island incident log and black-start successful path

Unplanned island incident record

Records of voltage, frequency and storage power of unplanned isolated island events

Black Start sequence (success path and failure branch)

1Power on auxiliary powerDC / UPS StartPath
2Direct carrier prechargeBMS / PCS previewPath
3Networked BESS StartupCreate a middle-pressure matrixPath
4Distributive power activated.Wind / PhotovoltPath
5Critical load recoveryHospital / Communications / WaterPath
6Controlled load recoveryProcess / Office BuildingPath

Emergency: critical load maintained pending recovery

05 / Control Structure Layer control structure: distributed autonomy, centralized synergy

Device Layer PCS / BMS / Switch

Local Control Layer LCU / RCS / PLC

Local control level LCU, RCS and PLC control cabinet

Microgrid Control Layer MGCC Master / Ready

Microgrid Control Layer MGCC Master controller

Operational management EMS / SCADA

Operating Management EMS and SCADA Control Room

Protect Layer Protect / Chain

Protective layer relay protection and locking equipment

Transport and Operations Layer Operator / Engineer

Engineering maintenance workstation for the transport and operating layers

Control Object	Device level	Local Control	Microgrid control	Energy management	Protect and Link
Typical cycle	<100 ms	100 ms – 1 s	1 s – 1 min	1 min – 1 h	<200 ms
Principal duties	Real-time equipment control	Local coordination	Status Switch / Coordinate	Economic dispatch	Fault clearance
Redundancy policy	Device-level redundancy	controller double	MGCC-A / B	Redundancy of services	Independent protection

06 / Storage / Load Multi-container power distribution and critical load stratification

Multi-container power distribution and health awareness (N+1)

Units	Status	SOC	Temperature	Available Power	Health	Command Power
BESS-01	Online	68%	26°C	2.3 MW	98%	0.8 MW
BESS-02	Online	65%	27°C	2.2 MW	97%	0.7 MW
BESS-03	Online	70%	25°C	2.3 MW	98%	0.8 MW
BESS-04	Maintenance	62%	28°C	0 MW	96%	0 MW
BESS-05	Online	66%	26°C	2.2 MW	97%	0.7 MW
BESS-06	Online	64%	27°C	2.1 MW	97%	0.7 MW
BESS-07	Online	69%	25°C	2.3 MW	98%	0.8 MW

Total available power13.4 MW
Current command power4.5 MW
N+1 Redundancy2.3 MW

Key load priority and scalding load matrix

Priority	Example load	Capacity	Urgent reservation	Cut order	Restore Order	Remarks
P1	Life safety load	0.8 MW	Reservations	—	—	Uncut.
P2	Core Process	1.2 MW	Reservations	—	—	Organisation
P3	Control / Communications	0.6 MW	Reservations	—	—	Standing insurance
P4	Critical heating	0.9 MW	Conditional	1	3	Conditions are appropriate.
P5	Production support	1.1 MW	Cut	2	4	Cut
P6	Office / Support	1.0 MW	Cut	3	5	Cut
P7	Non-critical load	1.6 MW	Cut	4	6	Downgraded

The level of security on the island4.3 MW
Current load4.1 MW
Residual0.2 MW

07 / Degraded scene Fault / Degraded scene and autonomy strategy

Interrupt communication

Path: Local autonomy

Policy: LSOP to remain secure

Control failure.

Switch: MGC-B takes over

Policy: Hot Ready / State Sync

PCS failure/absorption

Isolation: isolate the faulty unit

Policy: N+1 and redundancy

Generator failure

Policy: Start Logic Switch

Strategy: Bridge mechanism

Photovoltaic velocity

Strategy: Storage can calm down

Strategy: Power balance

SOC Too low

Policy: Load removal

Policy: Stop discharge

Protect Actions

Segregation: breakdown isolation

Policy: Partition Run

Autoprotect / Lock
Local autonomy
Artificial intervention
System Deduction Operation

08 / Site Engineering layout and control room evidence chain

Engineering design and scale expansion

01BESS Container AreaFire interval 3 m
02MV Device ModuleSwitcher / transformer
03Container fire systemFire / Spray
04Cable Trench / BridgePower / Weak Separation
05Roads and firewaysChannel width 6 m
06Drainage and Noise DesignConstruction and acoustic measures
07Expand reserved spacePhase 2 set aside
08Maintenance and repair of corridorsTransport.

Control room and chain of evidence

Microgrid SCADA Control Room Surveillance

Evidence and records

One FM/ RV
Accidents and incidents
SOE Sequence Events
Trends and statements
Control policy trajectory
Clock Sync Time

Control End and Status

MGC-A (Main)Running
MGC-B (prepared)Stand by.
EMS / SCADA&Normal
Protection and monitoring&Normal
Networks and communications&Normal

System Time2024-05-18 16:22:53

System integration: normal

09 / Receiving and Inspection Validation and acceptance procedures System-level integration validation

Phase	Test Object	Verify Target	Typical method	Result
Device Level FAT	PCS / BMS / Switch Device	Equipment functionality and communication integrity	I/O, protection, communication, chain testing	Pass.
Control Level FAT	PLC / LCU / MGCC	Control logic-state switching	Simulation injection, abnormal simulation	Pass.
System Level SAT	EMS / SCADA / Micronet	Full station co-operation capability	Networking, islanding, black-starting.	Pass.
It's an island test.	PCC / BESS / Load	Frequency and voltage Stability	Fault cut, load disturbance.	Pass.
Reconnection Test	MGCC / PCC	Netting and smoothing back over the same period	Angle, frequency, voltage differential verification	Pass.

NEXT STEP

Combine boundary and delivery path around Microgrid & Containerrized BESS

Programme configuration and implementation tempo can be further confirmed on the basis of on-site loads, netting conditions, installed space and transportation requirements.

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