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Zlatoličje Solar Power Plant
Zlatoličje, Slovenia
The Zlatoličje Solar Power Plant, with a nominal power of 2.5 MW, is located on the banks of Slovenia's largest hydroelectric power plant.
Hermi ground-mounted system components were chosen by the investors for the installation, along with Hermi cable trays and ladders for the wiring.
The entire photovoltaic system benefits from Hermi lightning and surge protection components. It was successfully connected to the electrical grid in 2022.
Lightning Protection
When protection solar power plants, ensuring adequate and effective protection is crucial. Given that a solar power plant consists of electronic devices sensitive to overvoltages, the risk of individual components being damaged during a lightning strike is significant. It is vital to ensure the entire plant is within the shielded area of the lightning protection system, with proper clearances between components and no or very little shading caused by lightning protection elements. Achieving this involves installing an appropriate number of air-termination rods. Ideally, we want to prevent lightning from flowing through any part of the solar power plant, including its construction. An isolated system is implemented wherever possible.
For the Zlatoličje solar park, Hermi supplied all the components necessary for protecting against direct lightning strikes. These encompassed air-termination, down conductor, drainage system, bonding and grounding. In total, over 4,000 meters of lightning conductor wire, about 1,000 clamps, and 200 air-termination rods were installed.
For the Zlatoličje solar park, Hermi supplied all the components necessary for protecting against direct lightning strikes. These encompassed air-termination, down conductor, drainage system, bonding and grounding. In total, over 4,000 meters of lightning conductor wire, about 1,000 clamps, and 200 air-termination rods were installed.
Over 4,000 meters of lightning conductor wire, about 1,000 clamps, and 200 air termination rods were installed to protect the Zlatoličje PV system.
Surge Protection of Photovoltaic Installations
Surge protection in photovoltaic installations must adhere to the international standard IEC 60364 7 712. A notable consideration in surge protection design is the awareness that overvoltages can also occur on the DC side. It is essential to pay attention to the appropriate voltage level and utilize suitable surge arresters.
The Zlatoličje power plant employed various Hermi surge protection components, including PZH R1 PV 1000/7, PZH R1 275/12.5/3+0, PZH R2 275/50/3+0, and others.
The Zlatoličje power plant employed various Hermi surge protection components, including PZH R1 PV 1000/7, PZH R1 275/12.5/3+0, PZH R2 275/50/3+0, and others.
A notable consideration in surge protection design is the awareness that overvoltages can also occur on the DC side.
Hermi Cable System
To route the installation through the solar park along the River Drava, approximately 1,500 meters of Hermi cable trays and ladders, along with various elbows, barriers, fasteners, cable covers, and other components, were employed.
Notably, the Hermi Fast Klick® cable trays and Hermi Fast Joint® connecting elements were used, allowing for swift installation without the need for tools. These patented Hermi products employ unique boltless fastening technology, significantly reducing labor time and associated costs.
Notably, the Hermi Fast Klick® cable trays and Hermi Fast Joint® connecting elements were used, allowing for swift installation without the need for tools. These patented Hermi products employ unique boltless fastening technology, significantly reducing labor time and associated costs.
1,5km
Approximately 1,500 metres of Hermi cable trays and ladders were used for cable distribution.
Hermi Solar Mounting Systems for Every Terrain
A reliable and durable construction system is essential for mounting photovoltaic modules to ensure their long life and overall efficiency. Such a system must withstand adverse weather conditions and other challenges.
Installing the mounting structure and solar power plant in the area presented difficulties due to the sloped terrain, soil profile, and client requirements. Ground-mounted solar power plant terrains are never entirely flat, which poses challenges for achieving an aesthetically pleasing and well-executed system that appears level. Flexibility in all directions is crucial, and this is achieved through the Hermi free-standing ground system.
The Zlatoličje solar power plant employed the Hermi ground-mounted system for the Drava banks. Modified Hermi SOL-NCN 2x bearing elements were chosen to suit the riverbank location, while Hermi SOL-P07 and SOL-P08 mounting profiles were used for PV module installation. The construction was securely attached to the bank using Hermi SOL-NSV ground anchor screws.
Installing the mounting structure and solar power plant in the area presented difficulties due to the sloped terrain, soil profile, and client requirements. Ground-mounted solar power plant terrains are never entirely flat, which poses challenges for achieving an aesthetically pleasing and well-executed system that appears level. Flexibility in all directions is crucial, and this is achieved through the Hermi free-standing ground system.
The Zlatoličje solar power plant employed the Hermi ground-mounted system for the Drava banks. Modified Hermi SOL-NCN 2x bearing elements were chosen to suit the riverbank location, while Hermi SOL-P07 and SOL-P08 mounting profiles were used for PV module installation. The construction was securely attached to the bank using Hermi SOL-NSV ground anchor screws.
Flexibility in all directions
The key to installing a ground-mounted solar power plant is the flexibility of the mounting structure in all directions.
The 2.5 MW photovoltaic system represents only a portion of a larger solar power plant with a total design capacity of 30 MW. This expansive project is planned for the inlet and outlet channels of the Zlatoličje and Formin hydroelectric power plants and is currently undergoing national spatial planning and zoning procedures.
30MW
In the upcoming years, a 30 MW solar power plant will be constructed on the degraded site of the Drava hydroelectric power plants.
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