cimpy.cgmes_v2_4_15.MeasurementValueQuality module

class cimpy.cgmes_v2_4_15.MeasurementValueQuality.MeasurementValueQuality(MeasurementValue=None, *args, **kw_args)

Measurement quality flags. Bits 0-10 are defined for substation automation in draft IEC 61850 part 7-3. Bits 11-15 are reserved for future expansion by that document. Bits 16-31 are reserved for EMS applications.

MeasurementValue:

A MeasurementValue has a MeasurementValueQuality associated with it. Default: None

Documentation of parent class Quality61850:

Quality flags in this class are as defined in IEC 61850, except for estimatorReplaced, which has been included in this class for convenience.

badReference:

Measurement value may be incorrect due to a reference being out of calibration. Default: False

estimatorReplaced:

Value has been replaced by State Estimator. estimatorReplaced is not an IEC61850 quality bit but has been put in this class for convenience. Default: False

failure:

This identifier indicates that a supervision function has detected an internal or external failure, e.g. communication failure. Default: False

oldData:

Measurement value is old and possibly invalid, as it has not been successfully updated during a specified time interval. Default: False

operatorBlocked:

Measurement value is blocked and hence unavailable for transmission. Default: False

oscillatory:

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). Default: False

outOfRange:

Measurement value is beyond a predefined range of value. Default: False

overFlow:

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. Default: False

source:

Source gives information related to the origin of a value. The value may be acquired from the process, defaulted or substituted. Default: None

suspect:

A correlation function has detected that the value is not consitent with other values. Typically set by a network State Estimator. Default: False

test:

Measurement value is transmitted for test purposes. Default: False

validity:

Validity of the measurement value. Default: None

Inheritance Diagram: