Disturbance recorder DRPRDRE
The Disturbance recorder function supplies fast, complete and
reliable information about disturbances in the power system. It
facilitates understanding system behavior and related primary
and secondary equipment during and after a disturbance.
Recorded information is used for different purposes in the short
perspective (for example corrective actions) and long
perspective (for example functional analysis).
The Disturbance recorder acquires sampled data from selected
analog- and binary signals connected to the Disturbance
recorder function (maximum 40 analog and 96 binary signals).
The binary signals available are the same as for the event
recorder function.
The function is characterized by great flexibility and is not
dependent on the operation of protection functions. It can
record disturbances not detected by protection functions. Up
to 9,9 seconds of data before the trigger instant can be saved in
the disturbance file.
The disturbance recorder information for up to 100
disturbances are saved in the IED and the local HMI is used to
view the list of recordings.
Measured value expander block MVEXP
The current and voltage measurements functions (CVMMXN,
CMMXU, VMMXU and VNMMXU), current and voltage
sequence measurement functions (CMSQI and VMSQI) and IEC
61850 generic communication I/O functions (MVGGIO) are
provided with measurement supervision functionality. All
measured values can be supervised with four settable limits:
low-low limit, low limit, high limit and high-high limit. The
measure value expander block MVEXP has been introduced to
enable translating the integer output signal from the measuring
functions to 5 binary signals: below low-low limit, below low
limit, normal, above high limit or above high-high limit. The
output signals can be used as conditions in the configurable
logic or for alarming purpose.
Station battery supervision SPVNZBAT
The station battery supervision function SPVNZBAT is used for
monitoring battery terminal voltage.
SPVNZBAT activates the start and alarm outputs when the
battery terminal voltage exceeds the set upper limit or drops
below the set lower limit. A time delay for the overvoltage and
undervoltage alarms can be set according to definite time
characteristics.
SPVNZBAT operates after a settable operate time and resets
when the battery undervoltage or overvoltage condition
disappears after settable reset time.
Insulation gas monitoring function SSIMG
Insulation gas monitoring function SSIMG is used for monitoring
the circuit breaker condition. Binary information based on the
gas pressure in the circuit breaker is used as input signals to the
function. In addition, the function generates alarms based on
received information.
Insulation liquid monitoring function SSIML
Insulation liquid monitoring function SSIML is used for
monitoring the circuit breaker condition. Binary information
based on the oil level in the circuit breaker is used as input
signals to the function. In addition, the function generates
alarms based on received information.
Circuit breaker monitoring SSCBR
The circuit breaker condition monitoring function SSCBR is
used to monitor different parameters of the circuit breaker. The
breaker requires maintenance when the number of operations
has reached a predefined value. The energy is calculated from
the measured input currents as a sum of I
y
t values. Alarms are
generated when the calculated values exceed the threshold
settings.
The function contains a block alarm functionality.
The supervised and presented breaker functions include
• breaker open and close travel time
• spring charging time
• number of breaker operations
• accumulated I
Y
t per phase with alarm and lockout
• remaining breaker life per phase
• breaker inactivity
13. Metering
Pulse counter logic PCGGIO
Pulse counter (PCGGIO) function counts externally generated
binary pulses, for instance pulses coming from an external
energy meter, for calculation of energy consumption values.
The pulses are captured by the BIO (binary input/output)
module and then read by the PCGGIO function. A scaled
service value is available over the station bus.
Function for energy calculation and demand handling
ETPMMTR
Outputs from the Measurements (CVMMXN) function can be
used to calculate energy consumption. Active as well as
reactive values are calculated in import and export direction.
Values can be read or generated as pulses. Maximum demand
power values are also calculated by the function.
Generator protection REG650
1MRK 502 050-BEN B
Product version: 1.3
24
ABB