China Jiangsu Net Power Equipment Technology Co., Ltd. Company Cases

In today's era of rapid development of digitalization and intelligence, the smart cable transmission system is setting off a wave of change in the field of energy transmission with its unique advantages and innovative technologies. Let's take a closer look at how the smart cable transmission system exerts its powerful performance through a specific case. Case background In a large-scale smart grid construction project, a city needs to upgrade the original power grid to meet the growing urban electricity demand and improve the reliability and flexibility of power supply. The upgrade project involves a wide range of urban areas, including commercial areas, residential areas and industrial areas, and requires the laying of a large number of cable lines. Traditional cable transmission methods have many disadvantages, such as difficult construction, low efficiency, and prone to human errors. Therefore, the project team decided to introduce a smart cable transmission system to solve these problems. Application of smart cable transmission system Intelligent planning and design In the early stage of the project, the city's geographical environment and power load were analyzed and predicted in detail using advanced geographic information systems (GIS) and power system simulation software. According to the analysis results, the intelligent cable conveying system can accurately plan the laying path of the cable, avoid important buildings, underground pipelines and other obstacles, and ensure the safe laying of the cable. At the same time, the system can also reasonably determine the cross-sectional area and capacity of the cable according to the power demand of different areas, avoiding the waste of cable resources. Efficient laying construction During the laying construction process, the intelligent cable conveying system has shown excellent efficiency. Traditional cable laying requires a lot of manpower, and the construction efficiency is easily affected by factors such as weather and terrain. The intelligent cable conveying system uses highly automated laying equipment to achieve continuous and stable cable delivery. These devices are equipped with high-precision positioning systems and sensors, which can monitor the laying position and status of the cable in real time to ensure that the cable is accurately laid according to the predetermined path and method. For example, in some complex underground construction environments, the intelligent conveying equipment can automatically avoid underground obstacles and adjust the laying angle, greatly improving the construction efficiency. Intelligent monitoring and fault warning In order to ensure the safe operation of the cable, the intelligent cable conveying system also has intelligent monitoring and fault warning functions. After the cable is laid, the system will connect to various monitoring sensors through the network to collect the operation data of the cable in real time, such as temperature, current, voltage, etc. By analyzing and comparing these data, the system can promptly detect abnormal conditions during the operation of the cable and warn of possible faults in advance. For example, when the cable temperature exceeds the normal range, the system will automatically issue an alarm to notify the operation and maintenance personnel to conduct timely inspections and treatment to avoid further expansion of the fault. Implementation effect and benefits Improve construction efficiency After the intelligent cable transmission system is adopted, the construction time of the entire power grid upgrade project has been shortened by nearly 40%. The application of automated equipment reduces manpower input, reduces the difficulty of construction, and improves construction quality and safety. The construction tasks that originally took several months to complete were completed ahead of schedule with the help of the intelligent system, providing strong guarantees for the normal production of the city and the lives of residents. Reduce operating costs The efficient monitoring and fault warning functions of the intelligent cable transmission system enable operation and maintenance personnel to promptly detect and deal with potential problems, avoid frequent power outages and equipment damage caused by faults, and greatly reduce operation and maintenance costs. According to statistics, after the implementation of the project, the operating cost was reduced by about 30% compared with the traditional method. Improve power supply reliability Through real-time monitoring and precise analysis of the cable operation status, the intelligent cable transmission system can promptly detect and deal with potential safety hazards, effectively improving the reliability of power supply. During the operation process after the implementation of the project, the number of power outages in the city has been significantly reduced, the power supply stability has been significantly improved, and user satisfaction has also been greatly improved. Summary This case fully demonstrates the excellent performance and huge advantages of the intelligent cable transmission system in the field of energy transmission. With the continuous advancement of science and technology, the intelligent cable transmission system will continue to improve and develop, providing strong support for building a more efficient, reliable and intelligent energy network, and promoting the energy industry to a higher level.

In modern large-scale bridge construction, the installation accuracy and quality of the cable play a vital role in the structural safety and service life of the bridge. As an advanced tension control device, the hydraulic tensioner has been widely used in bridge cable installation projects. The following is a detailed introduction to the application of hydraulic tensioner by taking a cross-sea bridge cable installation project as an example. Project background The cross-sea bridge is a transportation hub connecting two important cities with a total length of about 15 kilometers. The main bridge adopts a cable-stayed bridge structure with a large number of cables and extremely high tension accuracy requirements for the cables. The traditional cable tensioning method is difficult to meet such high standards, so it is decided to introduce a hydraulic tensioner to ensure the quality and accuracy of cable installation. Selection and configuration of hydraulic tensioner In view of the characteristics and needs of this project, a hydraulic tensioner with advanced technical features such as high precision, large tonnage and intelligent control was selected. The tensioner is mainly composed of a host, a control system, a sensor and other parts. The main machine is made of high-strength alloy material, with good stability and reliability, and can withstand tension up to thousands of tons. The control system adopts advanced PLC (programmable logic controller) and human-machine interface (HMI) technology to realize real-time monitoring and control of tension. Operators can intuitively view tension data and equipment operation status through the HMI interface and perform remote operations as needed. The sensor uses a high-precision strain-type tension sensor, which can accurately measure the tension of the steel cable with a measurement accuracy of ±0.5%. Application during installation Hydraulic tension machines play an important role in the installation of bridge cables. First, during the erection stage of the steel cable, the hydraulic tension machine is used to accurately control the initial tension of the steel cable to ensure the stability and straightness of the steel cable during the erection process. The operator sets the initial tension value in the control system according to the design requirements, and the hydraulic tension machine automatically adjusts the stroke of the oil cylinder to make the steel cable reach the set tension value. At the same time, the tension changes of the steel cable are monitored in real time through the sensor, and timely feedback is given to the control system to ensure the accuracy of the initial tension. During the tensioning stage of the steel cable, the hydraulic tension machine plays a key role. The steel cable is tensioned by graded tensioning, and different tensioning levels and tension values ​​are set according to the design requirements. The hydraulic tensioner gradually increases the oil pressure of the cylinder according to the instructions of the control system to make the steel cable reach the corresponding tension value. During the tensioning process, the sensor monitors the tension of the steel cable in real time. When the tension reaches the set value, the control system automatically stops the action of the cylinder to ensure the accuracy and safety of the tensioning process. In order to ensure the uniformity of the tension of the steel cable, multiple hydraulic tensioners are also used to work together during the entire installation process. The control system coordinates and synchronously controls the tension of multiple tensioners in real time to keep the tension of each steel cable consistent, effectively avoiding the deformation of the steel cable and uneven force on the bridge structure caused by uneven tension. Application Effects and Advantages By applying the hydraulic tensioner in the steel cable installation project of the cross-sea bridge, significant effects and obvious advantages have been achieved. ​​High-precision tension control​​: The application of the hydraulic tensioner greatly improves the tension control accuracy of the steel cable, meets the high standards required by the design, and effectively ensures the structural safety and service life of the bridge. ​​Improve installation efficiency​​: Automated operation and precise control make the cable tensioning process faster and more efficient, reduce the errors and labor intensity of manual operation, greatly improve the efficiency of cable installation, and shorten the construction period. ​​Ensure construction safety​​: The intelligent control system and real-time monitoring function of the sensor of the hydraulic tension machine can detect and handle abnormal situations in time, avoid safety accidents caused by excessive or insufficient tension, and ensure the life safety of construction personnel and the normal operation of equipment. Conclusion