Platform Software; Protection & Control Software; Disturbance Recorder - GE MiCOM P40 Agile Technical Manual

P44x/EN FD/Hb6
(FD) 8-8
volatile flash EPROM memory at power-on, and provides driver software for the user
interface via the LCD and keypad, and via the serial communication ports. The system
services software provides an interface layer between the control of the relay's hardware and
the rest of the relay software.
1.2.3

Platform software

The platform software deals with the management of the relay settings, the user interfaces
and logging of event, alarm, fault and maintenance records. All of the relay settings are
stored in a database within the relay which provides direct compatibility with Courier
communications. For all other interfaces (i.e. the front panel keypad and LCD interface,
Modbus and IEC 60870-5-103) the platform software converts the information from the
database into the format required. The platform software notifies the protection & control
software of all setting changes and logs data as specified by the protection & control
software.
1.2.4 Protection & control software
The protection and control software performs the calculations for all of the protection
algorithms of the relay. This includes digital signal processing such as Fourier filtering and
ancillary tasks such as the measurements. The protection & control software interfaces with
the platform software for settings changes and logging of records, and with the system
services software for acquisition of sample data and access to output relays and digital opto-
isolated inputs.
1.2.5

Disturbance Recorder

The disturbance recorder software is passed the sampled analogue values and logic signals
from the protection and control software. This software compresses the data to allow a
greater number of records to be stored. The platform software interfaces to the disturbance
recorder to allow extraction of the stored records.
Firmware Design
MiCOM P40 Agile P442, P444