Network Solution of Industrial Switch for Nuclear Power Station

From the nuclear island, conventional island to the auxiliary facilities (BOP) of the Nuclear Power Station, the entire nuclear power equipment covers reactor core, reactor pressure shell, reactor internals, control rod drive mechanism, steam generator, steam turbine, generator, deaerator, condenser, high and low pressure heater, main feed pump, fuel transfer device, condensate pump, main transformer, circulating water pump, compressed air station and other types of equipment. With the continuous improvement of these equipment and the demand for digital operation and management, the corresponding instrument control system is critical to ensure the safe, stable and economic operation of the Nuclear Power Station. As the data communication network is the transmission path of instrument monitoring data and control data, its performance directly affects the performance and reliability of the instrument control platform.

However, traditional equipment and control systems often have some problems, including: some simulation systems still need point-to-point wiring; The inherent vulnerability of the network; Data signal is vulnerable to noise; The conversion time from analog signal to digital signal makes the whole system slow.

The progress of industrial Ethernet technology has changed all this. For example, switching technology has made Ethernet deterministic. The dedicated ring network protocol has greatly improved the network availability, while optical fiber cables provide a medium immune to electrical noise. The ring network structure ensures the redundancy of communication when equipment fails or cables are cut off or damaged. It can be said that today's industrial Ethernet drives the digital communication network of nuclear power plants towards the direction of high transmission rate, low latency, large throughput, high redundancy and reliability.

In the process of power generation, transmission and distribution, Nuclear Power Station needs comprehensive data acquisition and data monitoring. The data flow is large, and the reliability and real-time performance of automation and control communication are highly required. However, the working environment of the Industrial Switch equipment in Nuclear Power Station is very harsh, sometimes it needs to be placed in the outdoor cabinet, and the electromagnetic interference is very serious. Therefore, the real-time, reliable and anti harsh industrial Ethernet switch has become a reliable solution for network communication in nuclear power plants.

Characteristics of Network Solution for Nuclear Power Station of our Industrial Switch

(1) Anti strong electromagnetic interference and surge, stable operation without fan at ambient temperature of - 40 ℃~85 ℃, suitable for application in harsh environment of power industry

(2) Self healing ring network technology, fast self-healing protection, and high reliable communication guarantee

(3) It has the function of optical circuit power failure protection to meet the power networking application with high reliability requirements

(4) The industrial Ethernet switch supports non blocking switching, provides the most stable line speed transmission performance, and meets the requirements of high flow and real-time

(5) Dual power redundancy design supports a wide power input range to ensure power supply safety

(6) Reliable optical fiber transmission and complex networking features meet the needs of large-scale communication coverage

In addition, in terms of network management software, our NIS monitoring software can provide monitoring of remote network traffic, network status, and rapid diagnosis of fault nodes. Even unmanaged switches can be also provided monitoring functions. In terms of system configuration, the automatic import and export technology based on configuration means that replacing a ethernet switch is just to take out the faulty device and install a new one, without spending time on configuration.

With the continuous development of the nuclear power industry, more and more strict demands will be put forward for industrial switches. Therefore, technical innovation is very important. Only by continuously optimizing our own products on the basis of existing products can we meet the trend of the times. We have been committed to the field of industrial switches for nearly ten years, and our products have been widely used in projects in the fields of intelligent transportation, rail transit, integrated pipe gallery, nuclear power plants, wind farms, smart grids, petroleum (petrochemical, pipeline), industrial automation and other industries. In the future, we will continue to deepen the field of industrial switches, continue to make technological innovation, and contribute to the safe and economic operation of China's nuclear power stations.