Solar Pv Interconnection Substation

Jinneng electric solar photovoltaic interconnection substation is an integrated prefabricated substation tailor-made for global photovoltaic power plants. It combines the compact structure of American-style box-type substations with the automated configuration of European-style box-type substations, serving as the core critical equipment in the photovoltaic power transmission chain.

The unit integrates key components such as energy-saving oil-immersed transformers, high-voltage distribution units, low-voltage inverter interfaces, anti-islanding protection, and lightning protection modules into a prefabricated enclosure, achieving the full-link functions of photovoltaic power step-up, distribution, and grid-connected control. It eliminates the need for additional auxiliary power buildings, significantly simplifying the supporting processes for photovoltaic projects.

 

 

Jinneng electric solar photovoltaic interconnection substation adopts a standardized naming convention. The model number clearly indicates the product's core parameters and functional characteristics, facilitating customers' quick selection and customization based on the requirements of their photovoltaic projects. The general model specification is YBH□□ (using a standard model as an example). The specific meanings of each letter and symbol are as follows:

Example: YBH10/1250 represents a Huashi prefabricated box-type substation with a rated high-voltage side voltage of 10kV and a rated capacity of 1250kVA. It is suitable for medium-sized distributed photovoltaic projects and small-scale centralized photovoltaic power stations, offering high cost-performance and wide applicability.

 

 

Parameter Name	Specification Parameters	Remarks
High-voltage Rated Voltage	10kV / 35kV (Optional)	Customizable according to the standards of different regional power grids
Low-voltage Rated Voltage	0.4kV / 0.69kV / 0.8kV (Optional)	Matches the output voltage of photovoltaic inverters
Rated Capacity	630kVA - 3150kVA	Customizable according to the installed capacity of photovoltaic projects
Rated Frequency	50Hz / 60Hz	Adaptable to power grid frequencies in different regions worldwide
Transformer Type	Energy-efficient Oil-immersed Transformer	Natural ventilation cooling (ONAN), energy-saving and low-consumption
Protection Class	IP54 (IP65 optional for coastal areas)	Dust-proof, spray-proof, corrosion-resistant and salt-fog resistant
Operating Temperature Range	-40℃ ~ 70℃	Adaptable to various extreme outdoor environments
Altitude Adaptability	≤4000m	Customizable adaptation for high-altitude projects
Noise Level	≤55dB	Suitable for scenarios such as residential areas and industrial zones
Design Life	≥25 Years	Consistent with the service life of photovoltaic power stations
Protection Functions	Anti-islanding, lightning protection, overcurrent protection, overvoltage protection, gas protection	Ensures the stable operation of equipment

 

 

(I) Centralized PV Stations
For large-scale ground-mounted plants (≥100 MW) in deserts, Gobi, etc. Boosts low voltage to 10/35 kV for efficient grid connection. Ideal for "PV + desert control" with high resistance to harsh conditions.

 

(II) Distributed PV Systems
- Industrial & Commercial Rooftop: For factories, buildings, logistics parks. Compact (58% footprint of European box transformers) and lightweight, enabling on-site generation and grid connection to cut costs.
- Residential Rooftop: For homes and rural areas. Compact, quiet, easy to install, supporting self-use and surplus power sales.

 

(III) PV-Storage Integrated Projects
Equipped with storage interfaces for smooth connection, enabling stable grid feed-in and peak shaving. Used in "agri-PV-storage," "fishery-PV-storage" etc., integrating energy production with agriculture, forestry, and fisheries.

 

(IV) Special Scenarios
Adaptable to plateau, coastal (anti-corrosion, anti-salt fog), and goaf (anti-settlement) projects. Customized solutions ensure long-term stable operation in special environments.

 

 

Case 1: Ningxia Lingwu 200MW Photovoltaic Base Project (China)

Product Configuration: 50 units of RYBH35/1250 Hua-type box transformers, with a high-voltage side voltage of 35kV and a rated capacity of 1250kVA. Equipped with anti-settlement bases and having a protection class of IP54, they are suitable for the desert goaf environment with large temperature differences and frequent sandstorms.

 

Case 2: Hebei Jinzhou 150MW Agricultural-Photovoltaic-Storage Integrated Project (China)

Product Configuration: 38 units of RYBH10/1000 Hua-type box transformers, reserved with energy storage interfaces and adopting a waterproof and moisture-proof design. They adapt to the high-humidity environment of farmland greenhouses and ensure the long-term stable operation of equipment.

 

Case 3: Jiangsu Yancheng 10GW Photovoltaic Module Super Factory Distributed Project (China)

Product Configuration: 22 units of RYBH10/800 Hua-type box transformers, featuring a lightweight design and noise level ≤45dB. They are suitable for the factory rooftop installation environment and are equipped with an intelligent monitoring system to realize remote operation and maintenance.

 

Case 4: Southeast Asia Thailand 50MW Distributed Photovoltaic Project

Product Configuration: 15 customized units of RYBH10/630 Hua-type box transformers, with a protection class of IP65 (anti-salt fog and moisture-proof) and a frequency of 60Hz, fully matching the requirements of the Thai power grid.

 

 

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