Description - Siemens SIPROTEC 4 7SJ61 Manual

Functions
2.17 Auxiliary Functions
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Test Mode
•
Commissioning
Prerequisites
In order to be able to use the commissioning aids described in the following:
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The device needs a port..
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The device must be connected to a control center.
2.17.8.1

Description

Test Messages to the SCADA Interface during Test Operation
If the device is connected to a central or main computer system via the SCADA interface, then the information
that is transmitted can be influenced.
Depending on the type of protocol, all messages and measured values transferred to the central control
system can be identified with an added message "test operation"-bit while the device is being tested on site
(test mode). This identification prevents the messages from being incorrectly interpreted as resulting from an
actual power system disturbance or event. As another option, all messages and measured values normally
transferred via the system interface can be blocked during the testing ("block data transmission").
Data transmission block can be accomplished by controlling binary inputs, by using the operating panel on the
device, or with a PC and DIGSI via the operator interface.
The SIPROTEC 4 System Manual describes in detail how to activate and deactivate test mode and blocked data
transmission.
Checking the System Interface
If the device features a system interface and uses it to communicate with the control center, the DIGSI device
operation can be used to test if messages are transmitted correctly.
A dialog box shows the display texts of all messages which were allocated to the system interface in the
configuration matrix. In another column of the dialog box you can specify a value for the messages you intend
to test (e.g. ON/OFF). After having entered password no. 6 (for hardware test menus) a message can be
generated. The corresponding message is issued and can be read out either from the event log of the
SIPROTEC 4 device or from the substation control system.
The procedure is described in detail in Chapter "Mounting and Commissioning".
Checking the Binary Inputs and Outputs
The binary inputs, outputs, and LEDs of a SIPROTEC 4 device can be individually and precisely controlled in
DIGSI. This feature can be used, for example, to verify control wiring from the device to substation equipment
(operational checks), during start-up.
A dialog box shows all binary inputs and outputs as well as LEDs of the device with their present status. The
operating equipment, commands, or messages that are configured (masked) to the hardware components are
also displayed. After having entered password no. 6 (for hardware test menus), it is possible to switch to the
opposite status in another column of the dialog box. Thus, you can energize every single output relay to check
the wiring between protected device and the system without having to create the alarm allocated to it.
The procedure is described in detail in Chapter "Mounting and Commissioning".
Creating Oscillographic Recordings for Tests
During commissioning, energization sequences should be carried out to check the stability of the protection
also during closing operations. Oscillographic event recordings contain the maximum information on the
behavior of the protection.
Along with the capability of storing fault recordings via pickup of the protection function, the 7SJ61 also has
the capability of capturing the same data when commands are given to the device via the service program
DIGSI, the serial interface, or a binary input. For the latter, event
binary input. Triggering for the oscillographic recording then occurs, for instance, via the binary input when
the protection object is energized.
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>Trig.Wave.Cap. must be allocated to a
SIPROTEC 4, 7SJ61, Manual
C53000-G1140-C210-6, Edition 05.2016