Kabel Atas
Overhead cable can integrate the electricity generated by solar power systems into the grid. ZMS boleh menyediakan kabel overhed yang diperlukan seperti ACSR, DIBUKA, AAC, and AAAC for various photovoltaic power generation projects.
In grid-connected solar power systems, the type of overhead cable used depends on specific installation requirements, such as voltage level, current-carrying capacity, mechanical strength, and environmental conditions.
From DC cables used for solar panels to AC cables used for inverter output, and finally to the overhead or underground cables that connect to the grid, ZMS’s professional team will comprehensively consider the scale of the solar project, geographical location, environmental conditions, and grid connection requirements to tailor the most suitable power cabling solution for you.
AAC (All Aluminum Conductor)
Structure:
AAC is composed of one or more strands of aluminum wire. These conductors are made from electrolytically refined aluminum with a minimum purity of 99.7%. The construction follows the standards of EN 60889 Type AL1 according to BS 215.
Characteristics:
AAC conductors are highly conductive and primarily used in urban areas for low, medium, and high voltage overhead lines where spans are short. They exhibit excellent corrosion resistance, making them ideal for coastal regions.
Standards:
ASTM B 230, ASTM B 231, TS IEC 1089, DIN48201, and BS 215.
AAAC (All Aluminum Alloy Conductor)
Structure:
AAAC cables consist of aluminum alloy wires concentrically stranded. They are made from a magnesium-silicon-type aluminum alloy (alloy 6201) with magnesium content between 0.6-0.9% and silicon content between 0.5-0.9%. These conductors are designed to be highly conductive with a minimum of 53% IACS.
Characteristics:
AAAC conductors offer improved strength, weight, and electrical properties compared to AAC and ACSR. They have better vertical tensile properties and enhanced corrosion resistance, making them suitable for medium and high voltage transmission lines. Their lower ice-breaking loads are advantageous in regions with low ice and wind loads. AAAC conductors are customizable based on specific application needs and customer requirements.
Standards:
ASTM B 230, ASTM B 231, TS IEC 1089, DIN48201, and BS 215.
ACSR (Aluminum Conductor Steel Reinforced)
Structure:
ACSR conductors consist of several aluminum and galvanized steel conductors stranded in concentric layers. The core is made of galvanized steel, which may consist of 1, 7, atau 19 wires, and is surrounded by aluminum strands. The core wire for ACSR is available with class A, B, or C galvanizing.
Characteristics:
ACSR cables are versatile and suitable for transmission lines across all voltage levels, including challenging terrains such as rivers and ravines. By adjusting the proportions of aluminum and steel, specific properties for various applications can be achieved. Increasing the steel content enhances antistatic properties, while more aluminum content increases current carrying capacity.
Standards:
ASTM B 230, ASTM B 231, TS IEC 1089, DIN48201, and BS 215.
Soalan Lazim
Kabel Overhed Mana Yang Digunakan dalam Sistem Tenaga Suria?
Dalam sistem penjanaan kuasa fotovoltaik bersambung grid, sebaik sahaja kuasa DC yang dijana ditukar kepada kuasa AC oleh penyongsang dan disepadukan ke dalam grid AC, penghantaran kuasa selalunya dilakukan melalui talian atas. Lazimnya, proses sambungan grid sistem penjanaan kuasa fotovoltaik boleh berlaku dalam senario berikut:
Sambungan Terus
Untuk sistem penjanaan kuasa fotovoltaik teragih kecil, seperti fotovoltaik atas bumbung kediaman, kuasa DC boleh terus ditukar kepada kuasa AC melalui penyongsang dan kemudian disambungkan ke grid voltan rendah melalui talian pengedaran. Dalam kes ini, underground low-voltage cables and overhead insulated cables like ABC cables can be used.
Sambungan melalui Pengubah Kotak atau Integrasi Pencawang
Stesen janakuasa fotovoltaik berskala sederhana atau komersial boleh menggunakan pencawang jenis kotak (pengubah kotak) untuk menukar kuasa DC yang dijana kepada kuasa AC yang sesuai untuk penyepaduan grid melalui penyongsang, dan kemudian naikkan voltan melalui pengubah kotak untuk memadankan paras voltan grid atas, sebelum menyambung ke talian atas.
Stesen janakuasa fotovoltaik yang dipasang di tanah berskala besar biasanya memerlukan pengubah untuk meningkatkan voltan ke tahap yang lebih tinggi untuk penghantaran yang cekap. Dalam kes ini, kuasa disambungkan terus ke pencawang, yang kemudiannya mengedarkannya ke grid atas voltan tinggi atau voltan ultra tinggi.
Dalam dua senario ini, jika jarak dari stesen janakuasa ke titik sambungan grid agak pendek dan bebannya tidak besar, AAC cable could be an economical choice. Untuk jarak sederhana atau di mana prestasi fizikal yang lebih baik diperlukan, AAAC cable may be a better option. Untuk penghantaran jarak jauh atau di mana keperluan kekuatan kabel khas diperlukan, terutamanya apabila talian atas perlu merentasi rupa bumi yang kompleks atau menahan keadaan cuaca yang melampau, ACSR conductor will be the most suitable choice.
What Are the Differences between AAC, AAAC, and ACSR Cables?
AAC: All-Aluminum Conductor (AAC) cables are relatively low-cost, lightweight, and have good conductivity, making them suitable for short-distance transmission and light load conditions. Namun begitu, their strength is relatively low, with limited tensile capability, which might not be suitable for long distances or situations requiring high mechanical strength.
AAAC: Compared to AAC, All-Aluminum Alloy Conductor (AAAC) cables have higher mechanical strength, better tensile strength, and corrosion resistance while maintaining good conductivity. This makes AAAC more suitable for medium-length transmission lines and environments with certain mechanical strength requirements, although the cost may be slightly higher than AAC.
ACSR: Aluminium Steel Reinforced Conductor (ACSR) cables combine the excellent conductivity of aluminum with the high strength of steel. They are particularly suitable for long-distance, heavy load, or transmission lines with strict mechanical strength requirements. ACSR cables can effectively withstand storms, snow loads, and line tension but are relatively more expensive.
In solar power generation systems, the choice between AAC, AAAC, or ACSR cables mainly depends on the system’s design, transmission distance, load requirements, and cost-benefit analysis. For short-distance and light load power transmission, AAC can be selected. For medium distances or where better physical performance is needed, AAAC is suitable. For long-distance transmission or complex environmental conditions, ACSR is usually the preferred choice.
What Factors Should Be Considered When Selecting Overhead Cables for PV Power Systems?
When selecting overhead lines for photovoltaic power generation systems, several key factors must be considered to ensure the system’s safety, kecekapan, and long-term reliability:
Environmental Conditions: Evaluate the climate conditions of the installation site, including wind speed, rainfall, temperature range, ice load, and salt spray corrosion. Choose overhead cable types and specifications that can withstand these environmental impacts.
Voltage Level and Current Carrying Capacity: Select cables with the appropriate voltage level and sufficient current carrying capacity based on the output power of the photovoltaic power generation system and grid connection requirements to ensure safe and lossless power transmission.
Conductor Type: Consider using AAC, AAAC, or ACSR conductors based on transmission distance, load requirements, and cost-benefit analysis. For low-voltage transmission, use insulated cables such as PVC or XLPE insulated cables.
Route Planning: Follow overhead line route selection principles, such as shortening the path as much as possible, reducing corners, avoiding potential obstacles and hazardous areas, ensuring line stability, and ease of maintenance.
Mechanical Strength and Durability: Choose cables that can withstand tension, wind pressure, and other mechanical stresses. For long-distance transmission or harsh environments, high mechanical strength ACSR may be the better choice.
Installation and Maintenance: Consider the ease of installation, maintenance costs, and potential future expansion needs. Choose cable types that are easy to install and maintain.
Safety: Ensure that overhead cables and accessories comply with local safety standards and regulations, including lightning protection and grounding requirements, to prevent electrical fires and electric shock risks.
Cost-Effectiveness: Conduct a comprehensive evaluation of the costs and benefits of different overhead power cable solutions, including initial investment, operational maintenance costs, and expected lifespan, to make the most economical and reasonable decision.
Compatibility and Compliance: Ensure that the selected overhead cable matches the output power of the photovoltaic system and meets national or regional electrical safety standards and grid connection requirements.
Future Expandability: Consider the potential expansion of the solar system. Choose cables with some redundancy to facilitate convenient upgrades when increasing generation capacity or improving the system in the future.
The final cable selection should be based on the specific project’s actual situation, including environmental factors, budget constraints, safety standards, and grid requirements. ZMS can provide a comprehensive cable solution for your solar power generation project, helping to simplify the project implementation process, shorten construction periods, and effectively control costs.
Sorotan Projek
ZMS bergabung tenaga dengan Kuasa Negara Hijau (GSP), perintis dalam infrastruktur tenaga boleh diperbaharui, untuk melengkapkan monumental 10 Projek fotovoltaik MWP di Kabul, Afghanistan.
ZMS menganalisis projek PV secara komprehensif dan menyediakannya 1Kabel solar X10 dan 1X6 H1Z2Z2-K, 3Kabel X300 LV, 3Kabel X300 MV, serta ACSR 185/30 kabel atas kepala. Melengkapkan ini ialah aksesori penting seperti penyambung PV dan kotak alat yang disusun rapi.
Komitmen ZMS terhadap kualiti dan kebolehpercayaan memudahkan pemasangan dan kecekapan operasi yang lancar, menyumbang kepada infrastruktur tenaga mampan di rantau ini.
Perkhidmatan ZMS
Pembuatan Tersuai
We understand that every customer's needs are unique. Oleh itu, kami menawarkan perkhidmatan penyesuaian kabel solar yang diperibadikan, menyesuaikan setiap butiran daripada spesifikasi kabel kepada antara muka sambungan mengikut keperluan projek khusus anda, memastikan keserasian dan kecekapan maksimum.
Logistik Tindak Balas Pantas Global
Dengan sokongan rangkaian logistik global kami, ZMS memastikan pesanan kabel fotovoltaik anda sampai ke mana-mana pelosok dunia dengan selamat dan segera. Pasukan logistik profesional kami memantau setiap peringkat pengangkutan untuk memastikan penghantaran barangan anda tepat pada masanya.
Sokongan Teknikal
ZMS's technical support team is always on standby. Apa jua cabaran teknikal yang anda hadapi, kami boleh memberikan respons pantas dan penyelesaian profesional, memastikan pengalaman pengguna tanpa kebimbangan.
Pengeluaran Hijau
Kabel solar dan aksesori kami mematuhi piawaian alam sekitar semasa proses pengeluaran, meminimumkan kesannya terhadap alam sekitar. Dengan memilih ZMS, anda bukan sahaja melabur dalam kabel fotovoltaik berkualiti tinggi tetapi juga menyumbang kepada pembangunan mampan planet ini.
