Overview
Distribution network communicates every branch distribution station, distribution terminal with every master station by using industrial grade Ethernet switches, to collect information, monitor, and remote control. Distribution network automation is comprises of two subsystems, distribution network SCADA system and remote meter reading system, these two systems require different for data security, transmission delay, transmission reliability.
Distribution Network SCADA System
Description
Distribution network SCADA system is used to collect data from transformer substation, switching station, distribution substation, and RTU,TTU,FTU in the looped network cabinet, and also used to remote signaling, telemetry, remote control, condition monitoring ,alarm, sequence of event order. Remote Terminal Unit(RTU) is used to collect analog quantity and quantity of status of power running status. Transformer Terminal Unit(TTU) is used to real-time detect and record the current, voltage, and power. Feeder Terminal Unit(FTU) is a switch monitoring device installed beside the feeder line switch, is used to monitor, control and protect looped network cabinet, column switch, also with the function of communication automation.
Requirements
Distribution network SCADA system is power detection, power failure switching, power real-time scheduling system, data real-time and high-reliable transmission are required
The system services as remote signaling, remote control, remote vision, status monitoring, alarm etc. Communication system required QoS service
Outdoor installation, designed to stand up to the harsh environmental and extreme temperatures, damp-proof, dust proof are required Prevent from illegal access and data destroy Meet the requirement of Electromagnetic interference and electromagnetic capability
The equipment installed in unattended circumstance, product quality is required
Benefits
High-panel bandwidth, high capacity buffer memory, ensuring data fast forwarding, port forwarding delay<10μs, switches zero package loss
Carrier-grade QOS, support 8 QoS priority queue, support SP、WRR、WFQ scheduling mode, ensure SCADA system data forwarding priority, guaranteed the data transmission in real-time
Adopt international standard protocol, EAPS looped network protection recovery time<50ms， ERPS ring protection switching time<20ms
High-reliability, industrial level 4 design, operates under extended temperature range up to -40℃ to +85℃, dust proof, anti-salt mist, anti- vibration, anti-shocks, MTBF≥10 years
Meet with IEC61850, IEEE1613 anti-electromagnetic, interference and electromagnetic interference compatibility (EMC)
High-security, support 802.1x authentication access，prevent from illegal access, different grade operation password protection, ACL control strategy
Remote Meter Reading System
Description
Remote meter reading system is used to meter electrical degree, collect information, information remote transmission, software handling and analysis from background. The process is information collection from intelligent electrical meter by using serial server and concentrator. Upload data to the storage server at main control station, to complete intelligent payment and information record.
Requirements
Data collection has no specific requirement of delay , QOS data forwarding priority level below power SCADA data priority level
Serial server need to support multiple serial protocols, to meet different application requirements
Outdoor installation, designed to stand up to the harsh environmental and extreme temperatures, damp-proof, dust proof are required
Meet the requirement of Electromagnetic interference and electromagnetic capability
The equipment installed in unattended circumstance, product quality is required Prevent illegal access and data destroy
Benefits
Carrier-grade QOS, 8 QoS priority queue, support SP、WRR、WFQ scheduling, accurately classified the data, different data has different priority level
Serial server flexible networking, supportRS232/RS422/Rs485 3 serial protocols
High-reliability, industrial level 4 design, operates under extended temperature range up to -40℃ to +85℃ , dustproof, anti-salt mist, anti- vibration, anti-shocks
MTBF≥10years
Meet with IEC61850,IEEE1613 anti-electromagnetic interference and electromagnetic interference compatibility (EMC)
Adopt international standard looped network protocol, ERPS looped network protection recovery<20ms