PRS-7910 Station Gateway

Product Description

The PRS-7910 Station Manager is designed for the highest standards of performance, safety and reliability to meet requirements of a complex substation automation system (SAS). As a part of the SAS, it works as a station communication manager, which collects, stores and maps signals of relays, measurement units, control units and other IEDs in the substation to higher-level systems such as control center (CC) and distributed control system (DCS).

Scope of Application

PRS-7910 as a station communication manager, which collects, stores and maps signals of relays, measurement units, control units and other IEDs in the substation to higher-level systems such as control center (CC) and distributed control system (DCS).

The PRS-7910 supports several protocols, such as IEC 61850, IEC 60870-5-101/104, IEC 60870-5-103, Modbus and DNP3.0. Data can be transmitted to and received from analog channel, digital channel or network connected to CC, DCS or other system. The direct transmission mode and the device independent avoid any interaction or influence with the substation SCADA (Supervisory Control And Data Acquisition) system.

Furthermore, the PRS-7910 can runs as a data acquisition and logic treatment platform and provides various and flexible advanced function extensions.

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Technical Features/Advantages

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Real-time database

The database is compatible with data model IEC 61850 and IEC 103

Support of multiple models including primary/secondary equipment model, association model, primary schematic diagram model, etc.

Full modeling view and data information

Unified data acquisition and transmission.

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Multiple communication protocol support

Standard package for server: IEC 60870-5-101/104, DNP, Modbus

Standard package for client: IEC 60870-5-101/104, IEC 60870-5-103, DNP, Modbus

Advanced package: IEC 61850 server & client

Customized package: Other customized protocol

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Unified substation model transmission

The data model transmission between substation and control center is realized by using the SCD file.

Support of most international standard protocols including IEC 60870-5-101/104, IEC 60870-5-103, DNP, IEC 61850, etc.

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Powerful auxiliary configuration tool

Highly integrated configuration functions

Full substation configuration support including project implementation, running, maintenance, analysis, diagnostic and debugging.

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System scale

Up to 1024 IEDs

Up to 32 control centers

Database > 200,000 signals

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Standard installation size

2U 19" small space occupationwith full feature and flexible configuration

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History database

Embedded history database

Optional capacity: 64 ~150 GB SLC SATA

Multiple data storage types including historical SOE records, operation reports, wave files, etc.

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Response to control centre

The response success rate from device to control centre > 99%

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Real-time data transmission

Internal SOE transmission delay <100ms

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Power supply redundancy

Dual power supply module is an option. The extra power supply module will be placed at the other side of the device rack and works independently.

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High performance hardware architecture

Dual 1.60 GHz CPUs, 2GB RAM, optional 64 ~150 GB SLC SATA SSD storage memory for historical data

Capable for data management and communication of the SAS for whole substation or power plant

CPU usage < 25% during normal service; CPU usage < 50% during massive data treatment Communication ports:

The 2U 19" chassis supports up to 8 Ethernet ports and 8 serial ports

Non-rotating storage is adopted to avoid vibration

A fully closed chassis with a complete panel

Completely separated spaces for electronic and electrical systems

Designed with anti-interference measures to enhance the device EMC.

W×D×H:425mm×280mm×88.1mm

Specifications/Submodels

Working power DC 110V/125V/220V or AC 220V
Ambient temperature -40℃~+70℃
Capacity of accessed device Simultaneous access of >255 devices
Number of accessed main stations Simultaneous connection of >32 main stations
Remote metering processing time ≤0.2%
Remote signal processing time ≤1ms
Remote command processing time ≤200ms
Accuracy of control operation 100%
Alarm direct transfer processing time ≤500ms
Remote browsing processing time ≤500ms
Time synchronization error <1ms

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