Siemens 6MD85, Manual

Page: 994 / 1256

Overview of Functions
The measurands are recorded at the measuring points and forwarded to the function groups.
Within the function groups, further measurands are calculated from these measured values, which are
required for the functions of this function group. This is how, for example, the electric power is calculated
from the voltage and current measurands.
Measuring transducers are an exception as they already form various calculation parameters from the analog
current and voltage inputs themselves.
Basic instructions for recording and editing process data can be found in the chapter
2.1 Function Embedding
in the Device .
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Figure 9-1 Structure of Measured-Value Acquisition and Processing
For the display, the measured values of a SIPROTEC 5 device are summed up in the following groups:
•
Operational measured values
•
Fundamental and symmetrical components
•
Function-specific measured values
•
Minimum values, maximum values, average values
•
Energy metered values
•
User-defined measured and metered values
•
Statistic Values
9.1
Measured Values, Energy Values, and Supervision of the Primary System
9.1 Overview of Functions
994 SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017