TSTY BESS PCS with Integrated Step Up Transformer for Grid Scale Energy Storage Peak Shaving

TSTY energy storage converter and step‑up integrated unit – bidirectional PCS with dry‑type or oil‑immersed transformer, IP54/IP68, for BESS peak shaving, frequency regulation, and microgrids. CE, IEC, UL, ISO, SASO certified.

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BESS Step Up Transformer

UL storage substation BESS step up transformer PCS with transformer energy storage booster ntegrated PCS substation battery storage step up bidirectional PCS unit grid scale BESS peak shaving substation load shifting transformer

Product Description

Technical Specifications

Product Features

Application

Why TSTY

The TSTY energy storage converter and step‑up integrated unit is a factory‑prefabricated, compact substation designed specifically for battery energy storage systems (BESS). It integrates a bidirectional power conversion system (PCS), a step‑up transformer (dry‑type or oil‑immersed), high‑voltage switchgear, low‑voltage distribution, communication and auxiliary power, and a protective enclosure into a single, fully tested assembly. Available in European, American, and Huashi (Chinese) configurations, this unit efficiently stores green energy from solar or wind power and, when required, converts DC battery power into grid‑compliant AC and steps it up to medium voltage (10kV or 35kV) for stable transmission to the grid. It effectively mitigates the intermittent and volatile nature of renewable energy generation, improving energy efficiency and grid stability.

Parameter	European Type	American Type	Huashi Type
Rated Voltage (kV)	12, 24, 40.5	12, 24, 40.5	12, 24, 40.5
Rated Frequency (Hz)	50/60	50/60	50/60
Transformer Type	Dry‑type (cast resin)	Oil‑immersed	Oil‑immersed
Cooling	AN / AF	ONAN / ONAF	ONAN / ONAF
HV Switchgear	Vacuum load switch + fuses, or circuit breaker	Oil‑immersed load switch + full range fuses	Vacuum load switch / circuit breaker
Enclosure Protection	IP54 (HV/LV), IP20 (transformer)	IP54 (shell), IP68 (oil tank)	IP54 (shell), C5 corrosion protection
Ambient Temperature	-40°C to +55°C	-40°C to +55°C	-30°C to +60°C
Altitude	≤2000m (derated above)	≤2000m (derated above)	≤2000m (customizable)
Monitoring	RTU with RS485/Ethernet, IEC 61850	Remote pressure/temperature gauges, travel switch	Remote monitoring, SCADA ready
Standards	CE, IEC, UL, ISO, SASO	CE, IEC, UL, ISO, SASO	CE, IEC, UL, ISO, SASO

1. Highly Integrated and Space‑Saving

Combines PCS, transformer, switchgear, and auxiliary systems in one enclosure.
Reduces footprint by up to 50% compared to traditional stick‑built solutions.
Factory pre‑assembled and pre‑commissioned – on‑site installation requires only simple docking and cable connection.

2. Bidirectional Power Conversion

Supports both charging (grid to battery) and discharging (battery to grid) operations.
Enables peak shaving, load shifting, frequency regulation, and renewable energy smoothing.
Advanced functions: black start, virtual synchronous generator, islanding operation.

3. High Protection and Extreme Environment Tolerance

Fully sealed enclosure: IP54 for HV/LV compartments, IP68 for oil tank (American type).
Special anti‑corrosion and UV treatment – resists salt spray, sandstorms, and intense sunlight.
Wide operating temperature range (-40°C to +60°C) and high altitude capability (up to 4500m with derating).

4. Safe and Maintenance‑Friendly

Dry‑type transformer (European) offers fire resistance and flame retardancy – no routine maintenance.
Oil‑immersed transformer (American/Huashi) provides high cost‑effectiveness, excellent heat dissipation, and low noise.
HV compartment equipped with vacuum load switch or circuit breaker – supports remote control and comprehensive protection.

5. Intelligent Monitoring and Remote Operation

Real‑time monitoring of voltage, current, temperature, oil level, and switch status.
Communication interfaces (RS485, Ethernet, IEC 61850) enable SCADA or cloud platform integration.
Fault warning and remote diagnostics reduce on‑site service visits, supporting unattended operation.

6. Fast Delivery and Low Carbon

Over 90% of the process completed in the factory – on‑site installation time reduced by 50%.
Recyclable steel and environmentally friendly insulation media optimize lifecycle carbon footprint.

Application Scenario	Description
New Energy Power Stations	Supports solar and wind farms – smooth output fluctuations, improve grid compliance, store excess energy.
Grid Services	Frequency regulation, peak shaving, spinning reserve, and reactive power support for utility grids.
Commercial & Industrial Energy Storage	Peak‑to‑valley arbitrage, demand charge management for factories, data centers, shopping malls, and hospitals.
Microgrids & Off‑Grid Systems	Independent power supply for islands, mining sites, remote villages, supporting solar‑storage‑diesel hybrid.
Emergency Backup	Critical facility backup power for disaster‑prone areas, ensuring continuous operation during grid outages.
EV Charging Hubs	Integrates with on‑site solar and storage to reduce peak demand and provide fast charging capacity.

Why TSTY?

30+ years of power equipment manufacturing experience.
250,000㎡ smart factory, 5G+ digital intelligent workshops, 99.9% product qualification rate.
CNAS‑accredited testing laboratory and 180+ patents.
Global presence – products delivered to 80+ countries, overseas offices in Zambia, Ethiopia, Kazakhstan, Colombia, Italy.
Local support – sales agency network in 20+ countries, 24/7 online assistance, 48‑hour emergency response.
Certifications – CE, IEC, CQC, SGS, GOST, ISO9001, ISO14001, SASO.
Warranty – 1‑year standard warranty, extended options available.