Information To A Substation Control Center - Siemens 7SC80 Manual

Functions
2.26 Auxiliary Functions
Classification of Messages
The messages are categorized as follows:
•
Operational messages (event log); messages generated while the device is operating: Information
regarding the status of device functions, measured data, power system data, control command logs etc.
•
Fault indications; these are indications of the last 25 network faults that were processed by the device.
•
Messages of "statistics"; they include a counter for the trip commands initiated by the device and possibly
reclose commands as well as values of interrupted currents and accumulated fault currents.
A complete list of all message and output functions that can be generated by the device with the maximum
functional scope can be found in the appendix. All functions are associated with an information number
(FNo). There is also an indication of where each message can be sent to. If functions are not present in a not
fully equipped version of the device, or are configured to Disabled, then the associated indications cannot
appear.
Operational Messages
Operational messages contain information that the device generates during operation and about operational
conditions. Up to 1000 operational messages are stored in chronological order in the device. New messages
are added at the end of the list. When the maximum capacity of the memory is exhausted, the oldest message
is lost.
With the two parameters 710 EvLog Fill Lev1 and 711 EvLog Fill Lev2, you define the loading state
(in %) of the memory from which on the indications 6096
are to be output.
Fault Messages (Buffer: Trip Log)
After a fault on the system, for example, important information about the progression of the fault can be
retrieved, such as the pickup of a protective element or the initiation of a trip signal. The start of the fault is
time stamped with the absolute time of the internal system clock. The progress of the disturbance is output
with a relative time referred to the instant of fault detection, so that the duration of the fault until tripping and
up to reset of the trip command can be ascertained. The resolution of the time information is 1 ms.
Retrievable Messages
The messages for the last eight network faults can be retrieved and read out. The definition of a network fault
is such that the time period from fault detection up to final clearing of the disturbance is considered to be one
network fault. If auto-reclosing occurs, then the network fault ends after the last reclosing shot, which means
after a successful reclosing or lockout. Therefore the entire clearing process, including all reclosing shots,
occupies only one trip log buffer. Within a network fault, several fault messages can occur (from the first
pickup of a protective function to the last dropout of a protective function). Without auto-reclosing each fault
event represents a network fault.
In total 600 indications can be recorded. Oldest data are erased for newest data when the buffer is full.
General Interrogation
The general interrogation which can be retrieved via DIGSI enables the current status of the SIPROTEC 4 device
to be read out. All messages requiring general interrogation are displayed with their present value.
Spontaneous Messages
The spontaneous messages displayed using DIGSI reflect the present status of incoming information. Each
new incoming message appears immediately, i.e. the user does not have to wait for an update or initiate one.
2.26.1.3

Information to a Substation Control Center

If the device has a serial system interface, stored information may additionally be transferred via this interface
to a centralized control and storage device. Transmission is possible via different transmission protocols.
362
Fill Lev1 reach and 6097 Fill Lev2 reach
SIPROTEC Compact, 7SC80, Manual
E50417-G1140-C486-A8, Edition 07.2017