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

2.3 Model Definition

Figure 2-3 System model description

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.

2.5 Technical data

2.6 Appearance Description

Table 2-2 System appearance description

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

2.7.1 Battery room

Figure 2-6 Battery room layout

Table 2-4 Battery room component description

2.7.2 Electrical room

Table 2-5 Electrical room components

2.7.3 PCS Room

Figure 2-8 PCS room layout

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: