I.A. Kosolapov, V.V. Boykov, Y.I. Morzhin, S.G. Popov, R&D Center AT FGC UES, JSC

Keywords: digital substation; IEC 61850; DSS test site (DSS TS); process bus; station bus; testing and simulation facility; real-time digital simulator (RTDS).

 

The introduction of the new technology "Digital substation", into the operational practice based on the IEC 61850 standard, is usually carried out through the pilot deployment of equipment. This technology is radically different from existing substation automation systems, primarily because traditional cable connections between primary and secondary equipment are replaced by segments of the local area network (LAN) of the substation.

The exchange of information between the primary and secondary equipment is carried out in digital form, including the secondary equipment connected through digital interfaces. Typical solutions for the organization of communications within the substation are in the process of formation, therefore new equipment is introduced fragmentarily to accumulate operational experience and test technical solutions.

To test a variety of technical solutions for the formation of a "process bus" and "station bus" it is necessary to conduct research at special test sites, rather than in existing electrical substation.

Creation active polygon based on the existing experimental substation with the ability to simulate disturbing effects in the adjacent electrical network and on an energy facility in real time using test-modeling complexes (such as, for example, Real Time Digital Simulator-RTDS) can signifi cantly reduce the development phase of a new Technology to verify the functional characteristics of equipment and to test various options for building LAN (typical solutions) for substations of various voltage classes.

After carrying tests on the polygon outin suffi cient volume will subsequently signifi cantly simplify the task of implementing the «Digital Substation»  technology in the power grid complex, while verifying typical solutions for building LANs for objects of different voltage classes.

One of the most important areas for the advancement of Technologists "Digital substation" for implementation at power facilities is the verification of equipment for compliance with the IEC 61850 standard, i.e. its certification. Certifi ed equipment for compliance with the IEC 61850 standard of various manufacturers will ensure its joint operation at the power facility.

 

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