Compared to traditional power grids, Smart Grids enhance reliability and security, effectively integrate renewable energy, improve energy efficiency, and promote sustainable development. With the rapid advancement of digital technologies, the global adoption of Smart Grids has become a significant trend in the power industry. As the "blood vessels" and "nerves" of Smart Grids, power cables serve the dual functions of energy transmission and information exchange. High-quality power cables are the foundation for ensuring the efficient, stable, and secure operation of Smart Grids.
The Smart Grid industry chain consists of five major segments: power generation, transmission, transformation, distribution, and consumption. The upstream power generation segment includes renewable (solar/wind/hydropower/nuclear, etc.) and non-renewable (thermal, etc.) sources. The midstream segment covers smart transmission, smart transformation, and smart distribution. The downstream segment involves end-users, primarily industrial, commercial, and residential electricity consumers.
| Power System | Voltage Level | Supply Range | Cable Characteristics |
| Transmission | Extra-high voltage (EHV): 330kV–750kV; Ultra-high voltage (UHV): 1000kV and above |
EHV long-distance transmission: Networks at 330kV, 500kV, designed to transmit power from remote plants to load centers and interconnect regional grids. |
High conductivity, heat resistance, mechanical strength, corrosion resistance, low creep, and stability. |
| Distribution | Medium voltage (MV): 1–35kV; High voltage (HV): 10kV–330kV |
Regional grids: Voltage levels above 35kV (typically 110kV, 220kV), supply radius >50km, connecting multiple power plants. |
High conductivity, easy installation, minimal land use, high reliability, simple maintenance, stability, low shock risk, and large distributed capacitance. |
| Consumption | Medium voltage (MV): 1–35kV; Low voltage (LV): Below 1kV |
Local grids: Voltage levels ≤35kV, supply radius 20–50km. |
Power cables are primarily categorized into overhead lines and medium/low-voltage cable lines. Overhead lines are used for high-voltage (HV) and ultra-high-voltage (UHV) main grids, while cables are typically applied in medium/low-voltage (MV/LV) distribution networks and industrial/mining facilities.
| Application | Product Name | Product Model | Voltage Level |
| Long-distance | Aluminum stranded wire, aluminum alloy stranded wire, steel core aluminum stranded wire, steel core aluminum alloy stranded wire, aluminum alloy core aluminum stranded wire, etc. |
JL、JLHA1、JL/G1A、JLHA1/G1A、JL1/LHA1, etc. | Above 35kV |
| Regional | XLPE Insulated Power Cables (Rated Voltage 3.6/6–26/35kV) | ZC-YJV22/ZC-YJLV22/FY-YJV22 | 3.6/6～26/35kV |
| Insulated Overhead Cables (Rated Voltage 10kV) | JKLGYJ/JKLYJ/JKYJ | 10kV | |
| Insulated Overhead Cables (Rated Voltage 1kV) | JKLGYJ/JKLYJ/JKYJ | 1kV | |
| Flexible HVDC Cables | JD-YJV/YJOV | 8.7/15kV | |
| End-users | Aluminum Alloy Power Cables (Rated Voltage 0.6/1kV) | ZC-YJLHV22/ZC-YJLHY23 | 0.6/1kV |
| XLPE Insulated Power Cables (Rated Voltage 0.6/1kV) | ZC-YJV22/ZC-YJV | 0.6/1kV | |
| PVC Insulated Power Cables (Rated Voltage 0.6/1kV) | ZC-VV22 | 0.6/1kV | |
| Fiber Optic Composite Low-Voltage Cables | CW-YJV-1/CW-YJV-2 | 0.6/1kV | |
| Fiber Optic Integrated Temperature-Sensing Cables |
