Retrofits affect equipment in operation: the intervention window is limited and the interfaces between protection, automation, and SCADA must work at first energization.
We assess the existing configuration, interfaces, and intervention window to define a technical support package with clear responsibilities.
From assessing the existing configuration to field verification
Review of the existing configuration, interfaces, and intervention window to define the scope and required input data.
IED integration and IEC 61850 communication with GOOSE and MMS messages, according to the approved architecture.
Point integration between IEDs and SCADA, interfacing with the party responsible for SCADA development.
Implementation and testing of approved logic, such as automatic load transfer between transformers.
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Types of systems a retrofit needs to integrate with
Communication setup between IEDs and bay control, with GOOSE and MMS messages according to the approved architecture.
Point integration with SCADA, interfacing with the party responsible for screens and database development.
Verification of commands, signals, and interlocks at bay level during testing and commissioning.
Scope, interfaces, and responsibilities
The typical scope is point integration between IEDs and SCADA. Screen and database development may be handled by another party; the proposal defines this interface.
GOOSE messages exchange fast signals between IEDs, such as blocking and interlocking. MMS is used for client-server communication between IEDs and SCADA.
By the existing configuration, the new equipment, the interfaces involved, and the intervention window. With this data, the proposal defines activities, responsibilities, and open items.
We can assess the existing configuration, interfaces, and intervention window to define a technical support package.
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