2 System Introduction

2.1 Introduction to the System

20C1600K adopts 20 foot standard shipping containers, with AC and DC integrated, 100% pre-install and factory tested, which is convenient for transportation and onsite installation. The rated power of the system is 1,600kW and the electric quantity is 3,086kWh.

The interior of the container contains lithium iron phosphate battery system, battery management system, energy storage bidirectional conversion, energy management system, environmental control system, fire protection system and other subsystems.

Main features of energy storage products:

All-in-one and compact product for super-fast delivery;
TEU shipping with 1.6MW/3.086MWh system capacity;
DC modular design, and linearly expandable battery unit;
High-voltage PCS modular design for one-on-one string management;
Decoupling between battery strings, and high capacity utilization;
Advanced battery management system to provide perfect measurement and protection functions;
Fault classification processing corresponding to preset fault scenarios;
Automatic exit mechanism from a fault branch to ensure the stable operation of the whole system;
Plug-and-play at delivery plus low installation, operation and maintenance costs;
Rated voltage of 690V, which can meet different grid needs by means of external step-up and step-down transformer cabinets;

This energy storage system can be widely used in renewable energy power stations to stabilize fluctuations, absorb power, as well as assisting in peak shaving, frequency modulation, and voltage regulation at the power grid side, and peak shaving and valley filling at the industrial and commercial user side. It is also used in load fluctuation stabilization, photovoltaic + energy storage + charging pile integrated power stations and other scenarios.

Figure 2-1 Schematic diagram of energy storage system

As shown in Figure 2-1, the 20C1600K energy storage system integrates the lithium iron phosphate batteries and battery racks, battery management system (BMS),power conversion system(PCS), BESS controller, liquid cooling unit,air conditioner, fire detection and automatic fire extinguishing system, and other subsystems for protection. ( The equipment in the dotted gray box is provided by Paneco, and the transformer is provided by the client).

PCS supplies AC power to the load via an insulation transformer. The system can change the output power and set the charge and discharge time segments according to actual project requirements and corresponding operation strategies.

2.2 Working mode

The energy storage system has two operating modes: Constant AC power mode and Stop mode.

Figure 2-2 Operation mode setting interface

Table 2-1 Description of system operation mode

Model	Description
Constant AC power	Running state: positive number is discharge, negative number is charging In charging state, the system converts alternating current from the grid into chemical energy stored in the battery In discharge state, the system converts chemical energy in the battery into electric energy and discharges it to the grid Failure occurrence When the system detects a fault signal, it switches to shutdown mode Receive stop order When the system receives stop instruction, it will switch to stop mode
Stop	System stop working

Model

Description

Constant AC power

Running state: positive number is discharge, negative number is charging

In charging state, the system converts alternating current from the grid into chemical energy stored in the battery

In discharge state, the system converts chemical energy in the battery into electric energy and discharges it to the grid

Failure occurrence

When the system detects a fault signal, it switches to shutdown mode

Receive stop order

When the system receives stop instruction, it will switch to stop mode

Stop

System stop working

2.3 Model Definition

The 20C1600K are energy storage products from Paneco, its rated power is 1,600kW and the nominal capacity of 3,086kWh. The 20ft Energy storage product container external dimension is indicated as below:

Figure 2-4 System appearance

2.4 Nameplate

NOTICE
Calculation method of nominal battery energy XX: Number of battery packs in a string (Rack), XX = 06, 07, 08.

Sign	Description
	System name
	Major technical specifications
	The equipment is electrified. Do not touch it
	The system is a power electronic product and has potential risks, especially after it is powered on. It must be operated by professional personnel with safety protection measures taken.
	When the system is running, the surface (especially the radiator part) has a high temperature. Do not touch it directly to avoid burns.
	To Reduce the Risk of Injury, read all instructions

2.5 Technical data

Item	Energy storage system
Model	PowerGrid-20C1000KLS
Battery Chemistry	Lithium Iron Phosphate (LFP)
Battery String Type	LS385
DC rated energy capacity	2,315kWh 1,929kWh
Rated voltage	921.6Vdc 768Vdc
Voltage range	806.4Vdc-1,022.4Vdc 672Vdc-852Vdc
Max.DC charge/discharge current	135.6A per string 162.7A per string
Standard charging method by manufacturer	Constant power
Rated AC voltage	400Vac@3W+PE
Rated AC voltage frequency	50/60Hz
Rated AC power	1,600kW
Rated AC current	1,443.4A
Max.Short Circuit Current	26kA
Operating temperature range	-30℃ - + 50℃
Storage temperature range	-20℃ - +55℃
Operating humidity range	0~95% (non-condensing)
Altitude	2,000m/6,562feet(non-derating)
Cooling	Liquid Cooling
Firefighting system	FK-5-1-12
Communication interface	RS485,Ethernet
Communication protocol	Modbus TCP
Degree of protection	IP54
Dimension (WDH)	6,0582,4382,896 mm
Weight	26.1t 23.6t
Certificates	UL9540, UN3536

2.6 Appearance Description

Table 2-2 System appearance description

NO	Name	Description
1	Battery string	The battery string contains a battery PACK and the BMU, which are connected in series and output by a pair of positive and negative polarizers.
2	Modular PCS	AC/DC converter module, each module is 125kW, the system is equipped with 8 groups of modules.
3	Exhaust equipment	When combustible gas exceeds the concentration threshold, open the fans and blinds to accelerate the air flow in the container, and use it with the air intake equipment to form a complete air exchange system
4	Water firefighting interface	When the fire alarm is triggered in the container, Fire rescue team can connect to the water pipe through the water fire interface, and water is sprayed onto the Battery Pack through the internal fire pipe to extinguish the fire.
5	Containers share the ground point	Containers share the ground point
6	Liquid cooling chiller	It is the main heat dissipation device of the battery room. It can adjust the temperature of battery PACK, indoor temperature, and humidity.
7	Pressure relief valve	When the internal pressure reaches the pressure threshold, will be opened to discharge excess pressure inside the container
8	Running indicator light	The system running status is Ready, RUN, or Fault
9	Fire alarm bell box	Fire alarm bell and extinguishing agent release indicator light
10	Emergency stop button, fire manual/automatic switch box and fire bleed stop button	Emergency Stop button: Press this button in case of emergency, and the system will stop. Fire manual/automatic switch box: can switch fire control to manual mode. Fire bleed stop button: Fire is triggered by other reasons other than container fire
11	HVAC	It is the main heat dissipation device in the electrical room, mainly used to dissipate heat from the control box and distribution box in the electrical room,heating function can be provided even in extremely low temperature environments
12	Air inlet window	When combustible gas exceeds the concentration threshold, open the fans and blinds to accelerate the air flow in the container, and use it with the air intake equipment to form a complete air exchange system

2.7 System layout

The system is divided into three areas: battery room, electrical room and PCS room.

Figure 2-5 System layout

Table 2-3 System layout description

NO	Name	Description
1	PCS room	It mainly includes modular PCS
2	Electrical room	It mainly includes GPC controller, distribution box, auxiliary transformer, high voltage unit, fire control controller, fire cylinder, etc
3	Battery room	Mainly contains lithium iron phosphate battery string, air conditioning, ventilation system

Name

Description

PCS room

It mainly includes modular

PCS

Electrical room

It mainly includes GPC controller, distribution box, auxiliary transformer, high voltage unit, fire control controller, fire cylinder, etc

Battery room

Mainly contains lithium iron phosphate battery string, air conditioning, ventilation

system

2.7.1 Battery room

Figure 2-6 Battery room layout(1MW/2.315MWh configuration)

Table 2-4 Battery room component description

NO	Name	Description
1	Smoke sensor	Fire smoke sensor
2	Lighting	Battery room lighting device
3	Temperature sensor	Fire temperature sensor
4	Battery Pack	Battery Pack
5	High Voltage Box	High Voltage Box

2.7.2 Electrical room

Table 2-5 Electrical room components

No	Name		Description
1	Data box		System equipment parts with the cargo information
2	GPC control box		System GPC controller, including the system running logic control, HMI, etc
3	Distribution box(DB)		Secondary equipment and reserved communication acquisition terminals, which are connected to 400V voltage through the power grid.
4	Primary distribution box (CB)		AC output port of the system and is connected to the power grid through an external transformer cabinet.
5	UPS		External UPS Reserve mounting space
6	Air conditioner		It is the main heat dissipation device in the electrical room.
7	Air intake set		Air inlet device for electrical room
8	Grounding point		Air inlet device for electrical room
9	Lighting equipment		Lighting equipment for electrical room
10	Fire alarm bell box	Acousto-optic alarm	Acousto-optic alarm
		Alarm bell	Alarm bell
		Gas release indicator	Fire extinguishing agent release light
11	Emergency stop button, fire manual/automatic switch box	Fire gas release emergency stop button	Fire extinguishing agent release emergency stop button
		Manual fire gas release device	The manual release device for fire extinguishing agent in the fire protection system, open the outer transparent cover, press the white button, and the fire protection system will release the fire extinguishing agent. It cannot be used in non emergency situations.
		Container emergency stop button	Fire control system controller
12	Running indicator light		The system running status is Ready, RUN, or Fault
13	Fire control system controller		Fire control system controller
14	Fire exhaust control module		The ventilation system control module can link gas detectors and fire system controllers, outputing signals to other extended equipment at the same time.
15	Solenoid Valve Bracket		Used to fix the solenoid valve.
16	Firefighting gas cylinder		Fire gas cylinders are used to install fire extinguishing agents in order to quickly activate the fire extinguishing system in the event of a fire

2.7.3 PCS Room

Figure 2-8 PCS room layout

NO	Name	Description	Remarks
1	Modular PCS	1# Modular PCS system	Hidden in the figure
2		2# Modular PCS system	Hidden in the figure
3		3# Modular PCS system	Hidden in the figure
4		4# Modular PCS system	As shown in the picture above
5		5# Modular PCS system	As shown in the picture above
6		6# Modular PCS system	As shown in the picture above
7		7# Modular PCS system	As shown in the picture above
8		8# Modular PCS system	As shown in the picture above

2.8 Primary schematic diagram

Figure 2-9 is a primary circuit diagram of the 20C1600K. After the battery energy is Inverted by PCS , it supplies power to users through transformer. Detailed wiring drawings can be referred to the device drawing section of the Device Drawing file. The symbols are interpreted in Table 2-7 .

Figure 2-9 Primary schematic diagram

Table 2-7 Symbol Interpretation:

NO	Symbol	Explain
1	BP	Battery pack
2	QF6	Battery string DC circuit breaker
3	FU6	Battery string DC fuse
4	KM6	Battery string DC contactor
5	CT0	Current transformer
6	DC/AC	Modular power conversion system EH-0200-HA-M
7	QF2	AC incoming breaker
8	Transformer	Transformer (Not included in the container, which needs to be configured separately by the user)
9	LS385	Serial number of battery string
10	L1	System AC output busbar L1
11	L2	System AC output busbar L2
12	L3	System AC output busbar L3

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