Operation and Maintenance

IEC 61850-based Substation Automation System

Cost Effective and Flexible Substation Automation System

Background Purpose

(Specification) Incompatible between other manufacturers’ devices.
(Operation) No way to full use of available data (storage, utilization).
(Cost) Equipment and labor cost reduction and shortening construction period are required

Solution

System standardization by applying IEC 61850 and using IED*1 and SCADA.*2

System Architecture of SAS*3 (1st Project commissioned in 2019)

System Architecture of SAS (Planning Project)

*1 IED: Intelligent Electronic Device
*2 SCADA: Supervisory Control And Data Acquisition
*3 SAS: Substation Automation System

Benefits

Cost and manpower reduction (15% reduction compared with existing replacement method)
Reduction of total amount of cupper cable laying.
Compatibility between other manufacturers’ devices.
Screens (layouts) of SCADA are customizable to user’s needs.

Application

This substation automation system has functions such as control, protection relay, automatic switching control of ncoming feeders.
SCADA provides not only real-time monitoring and control, but also efficient system operations such as collecting equipment operation history, automatic measurement.

Large amount of cupper cables reduction by communicating among devices

Retrofit replacement from relays to IEDs (still use of existing cubicles and panels)

Message

Our first SAS project was commissioned in 2019.
Several types of IEDs of manufacturers different from SCADA are introduced.
This SAS were completed after repeating functional verification tests and update.
New SAS will be introduced to substations in a few years.

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