Photovoltaic Energy Storage Transformer

Yibaling is a Chinese photovoltaic energy storage transformer manufacturer and supplier. Our factory is located in Wenzhou, Zhejiang Province, with over two decades of experience in the transformer industry. Our transformers have gained popularity among numerous customers, and we look forward to becoming your long-term partner.

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Product Description

With the increasingly serious problems of global climate change and energy resource shortage, the development of renewable energy has become a common goal for countries and enterprises. Among various renewable energy sources, photovoltaic power generation has attracted much attention due to its clean, renewable, and noise-free characteristics.

And the photovoltaic energy storage transformer, as an important component of the photovoltaic power generation system, its advantages and applications play a significant role in promoting the development of the photovoltaic industry.

It is an electrical device that operates based on the principle of mutual induction. And it consists of two or more windings and transmits electrical energy through magnetic coupling.

Its function is to isolate the electrical connection between the power source and the load, while providing outputs of different voltages. Moreover, the input winding and the output winding are electrically isolated from each other.

Core Designs

Our photovoltaic energy storage transformer is specifically designed for new energy. It outperforms ordinary transformers in terms of efficiency, reliability and intelligence.

Our product is made of better materials and designed more carefully. Compared with ordinary transformers, its actual operating loss is significantly lower, which saves more electricity in the long run.

More importantly, we have specially strengthened the load impact resistance and internal structure. Even with frequent charging and discharging, our transformer can operate for a long time.

Photovoltaic energy storage transformer also has its own perception ability, which can detect the operating status in real time and effectively filter out harmful noise to the power grid, outputting pure electricity.

Product Information

Product name	Photovoltaic energy storage transformer	Brand	Yibaling
Insulation esistance	≥150Ω	Voltage accuracy	±1%
Voltage variation rate	<1.5%	Waveform distortion degree	No waveform distortion
Temperature rise	≤90℃	insulation grade	Grade F, and other options are customizable.
Moisture-proofing methods	Open type	Noise	35 dB (within one meter)
Work environment	Humidity ≤ 95%, no condensation of RH, Temperature: -20 to +45℃	Workplace	No corrosive gases and conductive dust

Advantages of Photovoltaic Energy Storage Transformers

The output of photovoltaic power is intermittent and random, and its power fluctuations directly cause voltage fluctuations at the grid connection point, flicker, and harmonic pollution. The core advantage lies in:

1. Stabilizing power fluctuations

Through coordinated control with the energy storage system (PCS), photovoltaic energy storage transformers are no longer just a simple channel but a physical interface for power buffering.

They can digest power fluctuations ranging from seconds to minutes within themselves, outputting a smooth and stable active power curve to the grid, and controlling the power change rate (Ramp Rate) of the power station within the requirements of the grid.

2. Providing reactive power support and harmonic isolation

The modern intelligent design fully considers the harmonic flux path and adopts special winding arrangement and low-impedance design to effectively suppress the transmission of high-frequency harmonics.

More importantly, photovoltaic energy storage transformers can cooperate with inverters to dynamically provide reactive power (SVG function), adjust the power factor at the grid connection point in real time, stabilize the voltage level, and actively improve power quality instead of passively bearing it.

3. Reducing line losses

With a design of ultra-high efficiency (such as meeting national first-level energy efficiency standards), using low-loss oriented silicon steel sheets (such as 27ZH100) and foil-type windings to reduce load losses, the no-load losses of photovoltaic energy storage transformers are more than 30% lower than those of traditional transformers.

At the same time, the greatest value of the new photovoltaic energy storage transformer lies in achieving peak shaving and valley filling through energy storage, changing the traditional operation mode of photovoltaic transformers that output power at peak times during the day and remain idle at night.

Photovoltaic energy storage transformers enable transformers to operate for a long time under conditions closer to the optimal load rate, significantly reducing average losses. At the same time, by locally absorbing part of the electricity, it reduces line losses (I²R losses) during long-distance power transmission, improving the overall energy utilization efficiency from components to the grid.

4. Optimizing resource allocation

Photovoltaic energy storage transformers can flexibly allocate resources, control discharging according to grid requirements, and achieve reasonable energy scheduling.

Application of Photovoltaic Energy Storage Transformers

In residential and industrial distributed scenarios, photovoltaic energy storage transformers serve as the physical hub for building high self-consumption rate and high reliability smart energy systems.

1. For Enterprises and Factories

Photovoltaic energy storage transformers not only enable the grid connection and local consumption of photovoltaic power, but more importantly, through coordination with the energy storage system, they can implement refined demand management, significantly reducing the maximum demand electricity cost.

In the event of planned power outages or faults in the grid, they can achieve seamless millisecond-level switching, providing uninterrupted power (UPS-level guarantee) for critical production lines, avoiding production interruption losses.

2. For Residential Users

These transformers form the cornerstone of the household virtual power plant (VPP). They store electricity during low prices and discharge it during peak times, maximizing electricity revenue.

At the same time, in extreme weather causing a complete power grid outage, photovoltaic energy storage transformers can ensure the continuous operation of basic loads (lighting, refrigerators, communication) for several hours to several days, enhancing the resilience of electricity usage.

3. In Centralized Photovoltaic Power Stations

They can precisely stabilize minute/second-level power fluctuations caused by cloud cover, ensuring that the power station's output meets the strict requirements of the grid power change rate (Ramp Rate), which is a technical prerequisite for obtaining grid connection permission.

4. Enable the Power Station to Participate in the Electricity Market

Through the interface of the photovoltaic energy storage transformer, they can quickly respond to dispatch instructions and provide services such as primary frequency modulation and automatic generation control (AGC), creating additional income for the power station beyond electricity generation.

5. In Diesel Generator-Dominated Microgrids

Through the rapid response of photovoltaic + energy storage, the operation of diesel generators is significantly reduced or even replaced, achieving noise reduction, emission reduction, and cost reduction. The transformer here assumes the role of the main stable control of voltage and frequency.

6. Support Flexible Multi-Mode Switching

The products enable smooth and automatic switching between grid-connected mode and islanded mode.

During islanded operation, as the main power source, it establishes stable voltage and frequency references to ensure the power supply quality of all sensitive loads within the microgrid.