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Automatic Train Control (ATC) System
Communication-Based Train Control (CBTC) System utilizes communication media to enable bidirectional train-to-ground communication, replacing traditional track circuits for operation control. It supports high-capacity, high-speed data transmission while reducing cabling and maintenance needs. As a product of advanced communication technologies, CBTC is widely adopted in railway and urban rail systems as the core of moving block technology and a key component of rail signaling systems.
Its primary applications include trackside, onboard, and station environments. The complex trackside and onboard conditions require robust equipment, with wireless communication roaming ensuring continuous train-ground connectivity. The system supports 10-gigabit fiber-optic ring networks with strong self-healing capabilities in large-scale deployments, high-precision clock synchronization, and a three-layer architecture to separate safety-critical and non-safety-critical services.
Other Applications
Intelligent Substation Integrated Solution
Digitalized/Intelligent Substation is a modern substation constructed based on intelligent primary equipment and networked secondary equipment under the IEC 61850 communication protocol. It enables information sharing and interoperability among intelligent electrical devices within the substation. A reliable and intelligent communication network is a critical factor for the substation’s success in transmitting and distributing power over large areas. Due to the unique environment of substations and the requirements of automation systems, the communication network within the substation automation system must possess fast real-time response capabilities, extremely high reliability, excellent electromagnetic compatibility, and robust security.
Network Solution for Refineries and Chemical Plants
Refineries and chemical plants contain a vast number of intelligent devices, many of which must operate continuously without interruption. Systems such as DCS, MES, SIS, and security are connected via Ethernet networks to various controllers and monitors to manage and oversee plant production and performance. A highly stable and flexible Ethernet network provides redundant network architecture for these systems, controllers, and field devices, enabling rapid network self-healing. Simultaneously, sufficient bandwidth meets the requirements of video surveillance services. In the event of failures in DCS, SIS, or MES systems, the network must ensure that the impact is confined to a single domain. The communication system must also provide data filtering and the capability to validate the legitimacy of connected devices.
Thermal Power Plant Distributed Control System (DCS)
The network adopts a multi-ring coupled structure, where individual rings formed by industrial Ethernet switches are coupled with the ring at the monitoring center to create a multi-ring coupled topology. This network features real-time data acquisition, scalability, high reliability, high bandwidth, high-quality signal transmission, and redundancy backup. With this networking approach, each combustion furnace not only achieves on-site redundancy but also ensures redundant communication with the monitoring center. Moreover, since each combustion furnace is independently linked to the monitoring center via coupled rings, monitoring operations between furnaces remain mutually non-interferential. The field controllers achieve redundancy backup through the on-site single ring, while the monitoring center also employs redundant dual backups. This design ensures the entire network exhibits high redundancy and exceptional stability.
Energy Storage Power Station PCS/EMS/BMS Systems
A complete electrochemical energy storage system primarily consists of battery packs, a Battery Management System (BMS), an Energy Management System (EMS), a Power Conversion System (PCS), and other electrical equipment. Within the energy storage system, the battery packs feed status information back to the BMS, which then shares this information with the EMS and PCS. Based on optimization and scheduling decisions, the EMS sends control commands to the PCS and BMS to manage the charging and discharging of individual battery cells or battery packs. The system design connects the BMS host in the battery compartment to the fire protection system, monitoring system, and other components, as well as to the PCS cabinet. Via ring network switches, status information, monitoring data, and safety alerts from each energy storage station are transmitted to the central safety monitoring platform, enabling comprehensive oversight of the entire energy storage system. Additionally, the solution employs a dual A/B network architecture to achieve ring network redundancy, ensuring uninterrupted network operation and business data integrity even if one ring network fails.
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