ESS DCRP 5 MW
Energy storage system with dynamic compensation of reactive power
Description
The energy storage system with dynamic compensation of reactive power is designed to optimize electric power by means of:
- Better quality of consumed electric power;
- Peak shaving of power consumption;
- Shift of peak power consumption to the time of the lowest electricity cost.
When a lot of consumers are connected to electrical power network simultaneously, a decrease in voltage amplitude and frequency as well as waveform distortion might take place. Deviation of these parameters from standard values can cause operation failures — from accidental shutdown to full breakdown of the equipment. Remote users that use lines with limited power are at the highest risk.
Based on UniEnergy LFP systems, the energy storage system (ESS) provides an efficient solution for high-quality power supply. When charged, ESS accumulates energy and outputs it to a consumer’s power supply system levelling surges of own consumption and voltage failures of the supply mains. This solution ensures normal power supply without increasing power of electric lines and transformer substations.
ESS ensures a sharp rise in the quality of power supply. As an integral system component, the inverter provides dynamic compensation of any distortion and brings the parameters of frequency and voltage waveform to the reference values.
As a rule, conventional ESS batteries are charged at night when electricity rates are the lowest. The accumulated power is used in the daytime to minimize power consumption during the highest rating period. Therefore, ESS enables to reduce operational costs significantly.
Use of ESS with lithium iron phosphate batteries (LiFePO4) ensures continuous operation at high power output. Other battery types can be used on request.
System power capacity is defined on customer request and may be expanded in the event of production development or improvement.
Configuration
- Stationary and/or mobile use;
- any voltage up to 1 kW inclusively;
- any capacity on customer request.
Safety
- LFP cells with increased chemical stability;
- SoH system (State of health) —battery status monitoring;
- SOC system (State of charge) — state of charge monitoring;
- module/cabinet emergency shutdown system;
- control system with recording to the log.
UniEnergy LFP features
- Russian production;
- modular design without limitations;
- simple integration with various charging stations and RES;
- ready element of Smart grid system;
- turnkey delivery.
Potential applications
- RES — to compensate non-uniform power generation;
- conventional power sources — for surges in power consumption;
- consumers needing increased static and dynamic stability and/or emergency power reserve;
- hybrid and all-electric vehicles;
- consumers with limited power capacity;
- mobile energy storage systems.
Operating conditions
UniEnergy LFP systems, version NF4 (УХЛ4) according to GOST 15150-69, are outfitted with forced air cooling (IC1А5 according to GOST R IEC 60034-6-2012). ESS shall operate in enclosed heated spaces (switchboard rooms). Optimum temperature is +25 °С. Life time is 25 years if operating conditions are observed.
Technical specifications
| Rated power of converter, MW | 5 |
| Output voltage of converter, V | 400 (three phases) |
| Frequency, Hz | 50 |
| Rated power of ESS, MW | 3,8 |
| Max. voltage charge, V | 761 |
| ESS output voltage range, V | 523…863 |
| Cell capacity, А*h | 280 |
| Max. charge/discharge current | 1С |
| Type of battery | LFP |
|
Type of system |
modular |
| Module weight, kg | 26,1 |
| ESS weight, kg | 1 952 |
| Number of ESS, pcs. | 18 |
| Total system weight, kg | 35 136 |
| Communication interfaces | RS-485 х 2, Ethernet х 2 |
| Communication protocols | ModBus TCP/CAN |
| Charge temperature, °С | 0…+45 |
| Discharge temperature, °С | –20…+55 |
| Casing material | metal |
|
IP rating of casing |
IP44 |
| Transportation with AB | no |