♦ Program background:

The equipment distribution of substation is scattered, and the distance between the monitoring room and the substation is far, so it is difficult to conduct data collection and communication. However, it is very convenient to use the serial port server, which can form a communication network with the help of the existing company LAN, which is convenient for the upper monitoring system to collect data and realize monitoring. The bottom protection control device is connected to the TCP/IP LAN through serial communication.

♦ Program Description:

Design of monitoring network based on configuration software and serial port server

The operation data of substation is transmitted to the upper computer through serial communication and TCP/IP transmission network. The computer in the monitoring station can remotely monitor the changes of substation monitoring data. Serial port server sets the device data of multiple devices through serial port protocol, and then transmits the data to the LAN in the form of TCP/IP network collection. The data acquisition station receives the data through the virtual serial port. At the same time, the data acquisition station uses the network operation function of the Millennium Star configuration software to share data to other monitoring stations. The monitoring stations are connected by the Internet and there is no distance limit.

BBSea serial communication server NC600 series products are widely used in electric power integrated automation project. The protection control device at the bottom is connected to TCP/IP LAN through serial interface. It can realize the coexistence of RS232,RS422 and RS485 serial ports on the same device, support TCP/IPSCOKET programming, can be compatible with any operating system, provide TCP/IP cross-platform program development tools, support multi-machine connection, the same serial port data can be sent to more than two hosts at the same time.

Schematic diagram of the scheme: