: Public Class
Created: 08/05/2008 14:13:18
Modified: 29/07/2011 14:20:07
Project:
Advanced:
Quality flags in this class are as defined in IEC 61850, except for estimatorReplaced, which has been included in this class for convenience.<br/><br/>
Attribute
Public Boolean
  badReference
Details:
Notes: Measurement value may be incorrect due to a reference being out of calibration.<br/>
Public Boolean
  estimatorReplaced
Details:
Notes: Value has been replaced by State Estimator. estimatorReplaced is not an IEC61850 quality bit but has been put in this class for convenience.<br/>
Public Boolean
  failure
Details:
Notes: This identifier indicates that a supervision function has detected an internal or external failure, e.g. communication failure.<br/>
Public Boolean
  oldData
Details:
Notes: Measurement value is old and possibly invalid, as it has not been successfully updated during a specified time interval.<br/>
Public Boolean
  operatorBlocked
Details:
Notes: Measurement value is blocked and hence unavailable for transmission. <br/>
Public Boolean
  oscillatory
Details:
Notes: To prevent some overload of the communication it is sensible to detect and suppress oscillating (fast changing) binary inputs. If a signal changes in a defined time (tosc) twice in the same direction (from 0 to 1 or from 1 to 0) then oscillation is detected and the detail quality identifier "oscillatory" is set. If it is detected a configured numbers of transient changes could be passed by. In this time the validity status "questionable" is set. If after this defined numbers of changes the signal is still in the oscillating state the value shall be set either to the opposite state of the previous stable value or to a defined default value. In this case the validity status "questionable" is reset and "invalid" is set as long as the signal is oscillating. If it is configured such that no transient changes should be passed by then the validity status "invalid" is set immediately in addition to the detail quality identifier "oscillatory" (used for status information only).<br/>
Public Boolean
  outOfRange
Details:
Notes: Measurement value is beyond a predefined range of value.<br/>
Public Boolean
  overFlow
Details:
Notes: Measurement value is beyond the capability of being  represented properly. For example, a counter value overflows from maximum count back to a value of zero. <br/>
Public Source
  source
Details:
Notes: Source gives information related to the origin of a value. The value may be acquired from the process, defaulted or substituted.<br/>
Public Boolean
  suspect
Details:
Notes: A correlation function has detected that the value is not consitent with other values. Typically set by a network State Estimator.<br/>
Public Boolean
  test
Details:
Notes: Measurement value is transmitted for test purposes.<br/>
Public Validity
  validity
Details:
Notes: Validity of the measurement value.<br/>
Object Type Connection Direction Notes
MeasurementValueQuality Class Generalization From