NARI NSR612RF-D protection device
Typical configuration of the system
NS3000-S Integrated automation system By structure hierarchy It can be divided into two parts: station control layer and bay layer:
one Station control layer:
Including host, operator workstation, system maintenance engineer station, relay protection engineer station, telecontrol workstation, error prevention system, GPS
Time synchronization equipment, network interface device, interface of electricity metering system, public interface equipment, etc.
The main function of the station control layer is to provide the substation with interfaces for operation, management and engineering configuration, and record all relevant information in the substation
Interest. The details are as follows:
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Summarize the real-time data information of the whole station, constantly refresh the real-time database, and log in the historical database on time;
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Send relevant data information to the dispatching or control center according to the established protocol, receive relevant control commands from the dispatching or control center and transfer the interval
Layer and process layer execution;
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The monitoring system and telecontrol communication server adopt the integrated database configuration mode, and the remote control can be completed at the same time of generating the monitoring database
The configuration of database, function and logic of mobile communication server improves the maintenance efficiency of digital substation;
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It has online programmable whole station operation locking control function; Station control level and bay level share a set of error prevention rule base
It can be generated by background monitoring and downloaded to the measurement and control device through the network, and can simulate, preview and verify the measurement and control device on the background monitoring
The error proof logic of the system effectively improves the reliability and maintenance efficiency of the system;
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It has (or is equipped with) local monitoring and man-machine contact functions in the station, such as display, operation, printing, alarm, even image and sound
And other multimedia functions;
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It has the functions of online maintenance, online configuration and online parameter modification for equipment at the bay level and process level;
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With substation voltage and reactive power control（ VQC ）Small current grounding line selection, automatic fault analysis, operation training and other functions.
two Bay layer:
Including various protection devices, measurement and control devices, relay protection communication interface devices, etc; The main functions of the compartment are as follows:
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Summarize the real-time data information of the process layer of this interval;
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Implement protection and control function for primary equipment;
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Implement the operation locking function of the bay;
3 SCADA performance index
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Comprehensive error of analog quantity measurement: ≤0.5%
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Grid frequency measurement error: ≤0.01Hz
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Resolution of event sequence recording in the station（ SOE ）：
≤2ms ?
Annual correct action rate of remote signaling in case of accident: ≥99.99%
Success rate of remote control action: ≥99.99%
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Status change submission time (from I/O Input end to background or telecontrol communication device): ≤2s
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Analog quantity change upload time (from I/O Input end to background or telecontrol communication device): ≤2s
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Control command generation to output time (including recalibration): ≤3s
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Analog quantity cycle of screen real-time data update: ≤2s
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Switching value cycle of real-time data update of screen: ≤1s
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Screen call response time : ≤ 2s
