Iec 61850 Data Modeling - ABB COM600 series User Manual

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COM600 series, version 4.1
User's Manual
The data historian can be used for accurate process performance monitoring by following
process and equipment performance calculations with real-time and history values.
Better understanding of the process behaviour by joining time-based process measure-
ments with production and maintenance events helps the user to understand the process
dynamics. It further provides required information for learning how to keep the process
running. High performance and reliability, together with maintenance-free operation,
provide a solid platform for trending.
The optional data historian functionality offers means of storing, analyzing and
presenting process data.

IEC 61850 data modeling

To simplify protocol conversion and signal mapping in the gateway, each component
uses a common data model. The data model is based on common data classes and services
specified in the IEC 61850 standard. Each client and server component is a separate
program. The components interact with each other only via OPC interfaces. This means
that they can be developed and used independently as a part of the gateway as long as
they conform with the OPC DA and common data model specifications.
Protection and control products are connected to the gateway via OPC interfaces. Although
OPC provides means to access data on devices, it does not specify the semantics of the
data. This means that the same information is available in different formats depending
on which device and communication protocol is used. In addition, services, such as
breaker operation, vary among devices and protocols.
These differences complicate the reuse of gateway applications. To overcome this
problem, all the applicable data and services are remodeled in OPC servers according
to the data and service model specified in the IEC 61850 standard. This provides a pro-
tocol and device independent interface between the applications and the process. Fig-
ure 3.7-1 presents an overview of the IEC 61850 model usage.
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