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CESI
SICRE
User’s Manual
May 2002

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TABLE OF CONTENTS
1 THE SYSTEM’S ARCHITECTURE ..................................................................................................................... 2
2 DATA FILES ............................................................................................................................................................ 3
1.1. INPUT FILES ......................................................................................................................................................... 3
2.1.1 FIXED DATA FILES IN THE DADIR FORMAT........................................................................................ 3
2.1.2 FIXED DATA FILES IN THE SICRE FORMAT ......................................................................................... 5
2.1.3 Situation data file in DAVA format ............................................................................................................. 5
2.1.4 Situation data files in SICRE format ........................................................................................................... 6
2.1.5 Pages’ file ................................................................................................................................................... 6
2.2 THE DATABASE .................................................................................................................................................... 6
2.2.1 The database’s files .................................................................................................................................... 6
2.3 OUTPUT FILES ................................................................................................................................................. 7
3 PROGRAMS’ MANUALS ....................................................................................................................................... 8
3.1 ACQ - DATA ACQUISITION .................................................................................................................................. 8
3.2 SIM - SIMULATION OF THE TRANSIENT .............................................................................................................. 10
3.2.1 List of the directives .................................................................................................................................. 11
3.2.2 Generic directives ..................................................................................................................................... 12
3.2.3 Simulation directives ................................................................................................................................. 14
3.2.4 Variable viewing and setting .................................................................................................................... 26
3.3 DBE - HOW TO ACCESS THE DATABASE ........................................................................................................ 27
3.4 PAG - THE GRAPHIC PAGE DISPLAY .................................................................................................................. 27
3.5 CNF - THE EDITOR OF THE GRAPHIC PAGES .................................................................................................... 27
3.6 LNK - THE ACQUISITION OF THE GRAPHIC PAGES .............................................................................................. 27
3.7 SMM – SHARED MEMORY MANAGER ................................................................................................................ 27
3.8 SICRE – STARTER OF SIMULATION ................................................................................................................... 28
4 GRAPHICAL USER INTERFACE ...................................................................................................................... 30
4.1 -SIMGEST- SIMULATION CONTROL PANEL ...................................................................................................... 30
4.2 -PAG- SYNOPTIC SCHEMES BROWSER ............................................................................................................... 35
4.3 -CNF- SYNOPTIC SCHEMES COMPOSER .............................................................................................................. 39
4.4 -FDT- SCALAR DIAGRAM OF TIME FUNCTION .................................................................................................... 41

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1 The System’s architecture
SICRE consists in a set of programs and data files.
Electric system files
Graphic pages files
Input files
SICRE’s programs
Internal file
Output files
Fig. 1: SICRE’s structure
In fig. 1 it is represented the data file structure of SICRE:
 the electric system’s files contain the data of the electric system: they are organized in different
ASCII files. It contains the network topology, the parameter of the mathematical models and the var-
iable data of the load-flow situation; most of the files are supplied by other programs; some of them
are prepared by the user with the help of SICRE.
 the graphic pages’ files contain the description of the graphic pages (network scheme, function of
time diagrams): they are used to display the electric system and to execute manouvres in the simula-
tion. They are text files prepared using the SICRE’s graphic configuration program.
 the internal file contains the data of the electric system and other data in a structured binary form
(database) that is directly accessible by the programs.
 the output file contains the files prepared by SICRE: they can be read by the user, managed by
SICRE or by external programs (i.e. imported in electronic sheets).
SICRE’s programs act contemporary or one for time and execute the followings:
 read input file and creation of the internal database
 automatically generate the input files in the SICRE format
 prepare and modify graphic pages
 simulate transients and animate the graphic pages
 perform the electric system analysis
 supply other services

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There are two ways to use the programs:
 batch: it is the common way to activate the program from a UNIX shell terminal: it reads the data
files (standard input and other files), elaborates the data with the help of the user if necessary by typ-
ing directly on the prompt and prepares the output files (standard output and other files);
 client-server: it is the way to allow a set of programs or processes to operate in a concurrent mode.
In the description of the programs are reported the allowed modalities.
The organization of the simulation environment is composed by two environments:
 the system environment: it consists of a directory (the system directory) which contains the execut-
able files of SICRE, the on-line documentation and help, and other files for the configuration of the
workstation.
 the user’s environment: it consists of a directory (user directory) which contains all the data files
for a specific electric network and some customized procedures. One or more directories may exist
on the same workstation.
The system directory is created, at installation time, by a particular user, the SICRE manager, which is re-
sponsible for the installation and the updating of the software. Normally the system’s files should not be
modified by the users.
The user directory is created by a user of the simulation station: he creates the input files and is responsible
for the configuration for a use correct use of the system environment.
2 Data files
1.1. Input files
The input files describe the electric system topology, the models (models’ parameters) and the graphic pages.
They are a set of files in ASCII format, supplied by other systems (i.e. CRESO or SPIRA) or automatically
generated by SICRE.
The input files are divided into:
 fixed data files which contain the fixed data of the entire electric system: of the real and of the
equivalent part;
 situation file which contains the foreground data of the electric system;
 pages’ files which contain the data for the graphic pages;
2.1.1 FIXED DATA FILES IN THE DADIR FORMAT
It contains the physical data of the electric system (of the real and of the equivalent part) in a standard format
called DADIR /1/.

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Here it is reported the list of the DADIR files for the network. Each file is identified by a string referred to
the type of the component and contains al the data for that component.
Identifier
Description
CTRY
country
AREA
component
STA
station
TPLT
thermal plants
IPLP
hydro plants
VM
voltmeter
NODE
sections
TER
thermal generating units
IDR
hydro generating units
SR
synchronous compensators
LINE
lines
XFM2
transformers
XFM3
3 winding-transformers
XFME
equivalent transformer
POLO
AC/DC converters
CD
compensation reactors and capacitors
SVC
static compensators
VSEC
secondary voltage regulators
FSEC
secondary frequency regulators
Tab. 1 network’s files in DADIR format
For the Italian network the DADIR files are managed by the Transmission Division (DT). For other network
it is possible to prepare the data with the software SPIRA /2, 3/.
For the protections and the automatic devices is reported a list in which each component is identified by a
string referred to the device type and contains all the data for that component.
Identifier
Description
UFGA
apparatus management unit
PDZA
distance protections
ARRA
fast-reclosure devices
AFVA
fast-valving devices
PMAI
non-opening devices
PZBU
minimum backup impedance devices
ACRL
slow-reclosure devices
PDCF
phase comparison devices
PPDT
differential protection devices
PMZP
minimum impedance and out-of-step devices
PMZP2
minimum impedance and out-of-step devices 2
PCOR
current devices
PTEN
voltage devices
PPOT
power devices
PFRE
frequency devices
PCAM
loss-of-excitation devices
Tab. 2 devices’ data files in DADIR format