Project Plan: DCS Network, Maanshan Wannengda Power Plant I. Project Overview:
The plant level monitoring information system (DCS, NCS, EPS) of the Maanshan Wannengda Power Plant in Anhui Province is designed as a topological structure in which the ring and star are intertwined. The 100 megabit network managed switch is used, the 300 MW unit DCS is directly connected, and the peripheral auxiliary control system forms a hundred megabytes. After the redundant ring network is connected. The entire network is divided into three physical network segments: A, B, and C. The A and B networks are redundant dual-ring networks, and the C network is a control room star redundant structure. Each DPU has two NICs on the A and B network segments, which are respectively connected to the dual ring network.
Second, the network topology:
Third, network equipment selection:
Hessman RS2 product line.
1, RS2-FX/FX Managed Switch
2, RS2-TX
Fourth, the network program description and features:
This network solution adopts the most reliable, mature and advanced network technology and equipment based on the existing network layout and topology structure of each department, and ensures the high reliability of the network with the most optimized configuration. The network structure adopts a dual ring Ethernet structure.
The network can still work normally in the case of three different failure points (lines, switches, and gateways), ensuring the stable and reliable operation of the entire network system. Specifically, the network system has the following characteristics:
1. The RS2 series Ethernet switches used for multiple redundancy and high reliability are industrial Ethernet products. The switches have high reliability and dual power supply redundant inputs. They all adopt a fanless design. The operating temperature range can be from 0 to 60°C.
All switches are completely industrial-grade network products. The reliable heavy-duty design has far more performance than the common OA network products. Electromagnetic compatibility, working temperature, and shockproof indicators fully meet the requirements of the work site.
RS2 supports VLAN, multicast control, and Port Priority (Port Priority) settings, which can limit the broadcast and multicast information on the network to the maximum extent and improve the reliability and work efficiency of the network.
The switches in the control site provide an additional contact that can record the status of the switch directly as process data and can be used for alarms.
Network installation and troubleshooting are convenient. The RS2-FX/FX switch has an SNMP management unit and an integrated WEB-based management system. This facilitates rapid network configuration, diagnostics, fault location and management.
2, openness and scalability
HIRSCHMANN Industrial Ethernet is fully compliant with the standard 802.3 Ethernet standard and supports fiber/ twisted pair connections and TCP/IP protocols. It has more advantages than field bus communication, is a mature and modern industrial network solution, and provides a universal transmission platform for various industrial control devices.
In addition to meeting the requirements of industrial sites, HIRSCHMANN network products also support multiple network topologies and multiple redundancy methods such as (single) ring redundancy, single-ring dual-node redundancy, dual-bus redundancy, and dual-ring redundancy. I and ring redundancy (downlink redundancy). Inter-ring redundancy (downlink redundancy), that is, two hot-standby connection channels can be established between two ring networks. When one of them fails, it can automatically switch to another channel to provide system expansion. Great convenience.
Due to the use of dedicated network management software HiVision, which supports OPC Server, can communicate with industrial monitoring configuration software to achieve data communication, so that network management is integrated into the SCADA system for unified management.
3, Strict security assurances In the data transmission link, since the backbone network switches all have an SNMP management unit, integrated based on
WEB management system supports RMON network management. This ensures good safety.
The management of the switch adopts a secondary password access mechanism, which can disable unused switch ports and prevent unauthorized access of external devices.
The RS2 series (ver7.0) managed Ethernet switches not only support VLAN, but also support IGMP. Ports can be divided into different workgroups as needed, and their access rights can be limited.
The plant level monitoring information system (DCS, NCS, EPS) of the Maanshan Wannengda Power Plant in Anhui Province is designed as a topological structure in which the ring and star are intertwined. The 100 megabit network managed switch is used, the 300 MW unit DCS is directly connected, and the peripheral auxiliary control system forms a hundred megabytes. After the redundant ring network is connected. The entire network is divided into three physical network segments: A, B, and C. The A and B networks are redundant dual-ring networks, and the C network is a control room star redundant structure. Each DPU has two NICs on the A and B network segments, which are respectively connected to the dual ring network.
Second, the network topology:
Third, network equipment selection:
Hessman RS2 product line.
1, RS2-FX/FX Managed Switch
2, RS2-TX
Fourth, the network program description and features:
This network solution adopts the most reliable, mature and advanced network technology and equipment based on the existing network layout and topology structure of each department, and ensures the high reliability of the network with the most optimized configuration. The network structure adopts a dual ring Ethernet structure.
The network can still work normally in the case of three different failure points (lines, switches, and gateways), ensuring the stable and reliable operation of the entire network system. Specifically, the network system has the following characteristics:
1. The RS2 series Ethernet switches used for multiple redundancy and high reliability are industrial Ethernet products. The switches have high reliability and dual power supply redundant inputs. They all adopt a fanless design. The operating temperature range can be from 0 to 60°C.
All switches are completely industrial-grade network products. The reliable heavy-duty design has far more performance than the common OA network products. Electromagnetic compatibility, working temperature, and shockproof indicators fully meet the requirements of the work site.
RS2 supports VLAN, multicast control, and Port Priority (Port Priority) settings, which can limit the broadcast and multicast information on the network to the maximum extent and improve the reliability and work efficiency of the network.
The switches in the control site provide an additional contact that can record the status of the switch directly as process data and can be used for alarms.
Network installation and troubleshooting are convenient. The RS2-FX/FX switch has an SNMP management unit and an integrated WEB-based management system. This facilitates rapid network configuration, diagnostics, fault location and management.
2, openness and scalability
HIRSCHMANN Industrial Ethernet is fully compliant with the standard 802.3 Ethernet standard and supports fiber/ twisted pair connections and TCP/IP protocols. It has more advantages than field bus communication, is a mature and modern industrial network solution, and provides a universal transmission platform for various industrial control devices.
In addition to meeting the requirements of industrial sites, HIRSCHMANN network products also support multiple network topologies and multiple redundancy methods such as (single) ring redundancy, single-ring dual-node redundancy, dual-bus redundancy, and dual-ring redundancy. I and ring redundancy (downlink redundancy). Inter-ring redundancy (downlink redundancy), that is, two hot-standby connection channels can be established between two ring networks. When one of them fails, it can automatically switch to another channel to provide system expansion. Great convenience.
Due to the use of dedicated network management software HiVision, which supports OPC Server, can communicate with industrial monitoring configuration software to achieve data communication, so that network management is integrated into the SCADA system for unified management.
3, Strict security assurances In the data transmission link, since the backbone network switches all have an SNMP management unit, integrated based on
WEB management system supports RMON network management. This ensures good safety.
The management of the switch adopts a secondary password access mechanism, which can disable unused switch ports and prevent unauthorized access of external devices.
The RS2 series (ver7.0) managed Ethernet switches not only support VLAN, but also support IGMP. Ports can be divided into different workgroups as needed, and their access rights can be limited.
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