SIST IEC 60870-1-2:1997

Telecontrol equipment and systems - Part 1: General considerations - Section 2: Guide for specifications

Presents guidelines but not standards for establishing specifications for telecontrol systems and equipment following the other IEC standards on telecontrol systems and other relevant international standards and recommendations such as CCITT recommendations. Also facilitates the comparison of equipment produced by different manufacturers.

Matériels et systèmes de téléconduite. Première partie: Considérations générales. Section deux: Guide pour les spécifications

Fournit des lignes directrices, mais non des normes, pour l'établissement de spécifications concernant les matériels et les systèmes de téléconduite, conformément aux autres normes de la CEI portant sur le sujet et aux normes et recommandations internationales applicables (par exemple, les recommandations du CCITT). Facilite également la comparaison entre les matériels des différents fabricants.

Telecontrol equipment and systems - Part 1: General considerations - Section 2: Guide for specifications

General Information

• Status: Published
• Publication Date: 31-Jul-1997
• ICS: 33.200 - Telecontrol. Telemetering
• Technical Committee: PSE - Power systems management
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Aug-1997
• Due Date: 01-Aug-1997
• Completion Date: 01-Aug-1997
• Ref Project: IEC 61837-2 Ed. 2.0 - Surface mounted piezoelectric devices for frequency control and selection - Standard outlines and terminal lead connections - Part 2: Ceramic enclosures

Standards Content (Sample)

SLOVENSKI STANDARD
SIST IEC 60870-1-2:1997
01-avgust-1997
Telecontrol equipment and systems - Part 1: General considerations - Section 2:
Guide for specifications
Telecontrol equipment and systems - Part 1: General considerations - Section 2: Guide
for specifications
Matériels et systèmes de téléconduite. Première partie: Considérations générales.
Section deux: Guide pour les spécifications
Ta slovenski standard je istoveten z: IEC 60870-1-2
ICS:
33.200 Daljinsko krmiljenje, daljinske Telecontrol. Telemetering
meritve (telemetrija)
SIST IEC 60870-1-2:1997 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST IEC 60870-1-2:1997

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SIST IEC 60870-1-2:1997
NORME CEI
INTERNATIONALE IEC
60870-1-2
INTERNATIONAL
Première
édition
STAN
DARD
First edition
1989-11
Matériels et systèmes de téléconduite
Première partie:
Considérations générales
Section deux — Guide pour les spécifications
Telecontrol equipment and systems
Part 1:
General considerations
Section 2 — Guide for specifications
© IEC 1989
Droits de reproduction réservés —
Copyright - all rights reserved
Aucune partie de
cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
quelque
utilisée sous forme que ce soit et par aucun any form or by any means, electronic or mechanical,
procédé, électronique ou mécanique, y compris la photo- including photocopying and microfilm, without permission in
copie et les microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: [phone] e-mail: [e-mail] IEC web site http: //www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
R
PRICE CODE
International Electrotechnical Commission
IEC
McNviyHapoAHaR 3neKTpoTexHH4ecKaR
HoMHCCHf
Pour prix, voir catalogue en vigueur
• • For price, see current catalogue

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SIST IEC 60870-1-2:1997
870-1-2 © IEC - 3 -
CONTENTS
Page
5
FOREWORD
PREFACE 5
9
INTRODUCTION
Clause
1. Scope 9
2 Object 9
11
3. Description of the telecontrol system and its functions
3.1 Description of the telecontrolled (or relemonitored)
11
process
3.2 Functions of telecontrol systems 11
17
3.3 Data quantities
23
3.4 Man-machine interface
3.5 Characteristics of the data flow 23
Specification of the data transmission network 23
4.
4.1 Data network configuration 23
4.2 Specification of telecontrol data transmission 25
4.3 Representation of the planned data network in a block
diagram 27
5. Equipment specifications 27
5.1 Overview of the equipment of telecontrol systems 27
5.2 Specifications of the environmental conditions 29
5.3 Specifications of interfaces between the different equip-
ment of telecontrol systems 31
5.4 Specifications of the power supply equipment 33
5.5 Mechanical specifications 33
5.6 Specifications of transport conditions 35
5.7 System tests and commissioning procedures 35
5.8 Operational conditions, guarantees 35
5.9 Documentation (under consideration) 35
Figure
1 Block diagram of the data flow (example) 37

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SIST IEC 60870-1-2:1997
©
870-1-2 IEC - 5 -
INTERNATIONAL ELECTROTECHNICAL COMMISSION
TELECONTROL EQUIPMENT AND SYSTEMS
Part 1: General considerations
Section Two - Guide for specifications
FOREWORD
1) The formal decisions or agreements of the IEC on technical matters,
prepared by Technical Committees on which all the National Committees
having a special interest therein are represented, express, as nearly
as possible, an international consensus of opinion on the subjects
dealt with.
2) They have the form of recommendations for international use and they
are accepted by the National Committees in that sense.
3) Jn order to promote international unification, the IEC expresses the
wish that all National Committees should adopt the text of the IEC
recommendation for their national rules in so far as national con-
ditions will permit. Any divergence between the IEC recommendation and
the corresponding national rules should, as far as possible, be clearly
indicated in the latter.
PREFACE
This report has been prepared by IEC Technical Committee No. 57:
Telecontrol, teleprotection and associated telecommunications for electric
power systems.
The text of this report is based upon the following documents:

Six Months' Rule Report on Voting

57(C0)44
57(C0)51
Full information on the voting for the approval of this report can be
found in the Voting Report indicated in the above table.
The following IEC publications are quoted in this report:
Publications Nos. 495 (1974): Recommended values for characteristic
input and output quantities of single
sideband power line carrier systems.

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SIST IEC 60870-1-2:1997
870-1
-2 © IEC - 7 -
870-1-1 (1988): Telecontrol equipment and systems,
Part 1: General considerations -
Section One: General principles.
870-2-1 (1987): Part 2: Operating conditions -
Section
One: Environmental conditions
and power supplies.
870-3 (1989): Part 3: Interfaces (electrical charac-
teristics).
870-4 (19.): Part 4: Performance requirements.
870-5 (19.): Part 5: Transmission protocols.
870-6: Part 6: Telecontrol protocols compat-
ible with ISO standards and CCITT
recommendations.

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SIST IEC 60870-1-2:1997
870-1-2 © IEC - 9 -
TELECONTROL EQUIPMENT AND SYSTEMS
Part 1: General considerations
Section Two - Guide for specifications
INTRODUCTION
Planning of telecontrol systems and defining the specifications of a
system and of its equipment are complex and demand a large amount of
detailed information. There are not only application functions of the
system to be defined but also the operational parameters, the local
environmental conditions and the data transmission paths available as
well as their characteristics. The interfaces between the components of
the system and other equipment facilities such as power supply require-
ments shall also be specified.
Many aspects of this field are covered by standards within the
IEC 870 series on telecontrol equipment and s, stems but many deci-
sions are still left to the engineers who have to plan a system and
establish the specifications.
1. Scope
This series of standards applies to telecontrol equipment and systems
with coded bit serial data transmission for monitoring and control of
geographically widespread processes.
2. Object
This section presents guidelines but not standards for establishing
specifications for telecontrol systems and equipment following the other
IEC standards on telecontrol systems and other relevant international
standards and recommendations such as CCITT recommendations. It
also facilitates the comparison of equipment of different manufacturers.
The planning of telecontrol systems should be subdivided into clearly
defined steps:
- The first step involves a consideration of the operational require-
ments of telecontrol systems (clause 3 of this section) .
-
In the second step, the conditions and limitations of the data
transmission network are considered and the most suitable utili-
zation is specified (clause 4 of this section) .

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SIST IEC 60870-1-2:1997
870-1-2 © IEC - 11 -
Thirdly, the required facilities for the telecontrol equipment and
other equipment of telecontrol systems are specified. This includes
considerations of whether it is useful to include existing local
control equipment (clause 5 of this section) .
The guidelines given in this section are applicable also if only parts
of telecontrol systems are needed. In this case only the relevant
clauses need be considered.
3.
Description of the telecontrol system and its functions
Design aim of the system, for example:
"Main (or regional) control system." (name of the power company
or of the region), or
"District telecontrol system." (name of the district itself or of
the district control centre), or
"Telecontrol system for power station." (name of the controlled
station) .
3.1 Description of the telecontrolled (or telemonitored) process
3.1.1 Purpose of process to be controlled
(Short explanation only as far as necessary for planning telecontrol
systems.)
3.1.2 Name of master stations and control centres
Description of the function, e. g. dispatching centre, regional control
centre, etc.
3.1.3 Number and names of outstations
Description of their functions, e.g. "Power station.", "Transformer
station.", etc.
3.1.4 Geographical configuration of the system
System block diagram and site description.
Location and distances between interconnected stations
3.1.5
Functions of telecontrol systems
3.2
3.2.1 Survey of application functions
3.2.1.1 Basic functions
flow, generated power, sum-
- Telemetering of the transfer power
mation of the power consumption, line voltage, frequency, tempera-
ture, water-levels, etc.;
telecounting of the generated energy, energy consumption, energy
-
transfer, etc.;

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SIST IEC 60870-1-2:1997
870-1-2 © IEC - 13 -
- teleindication of the circuit-breaker, protection functions, alarms,
etc;
- telecommand of the circuit-breaker, etc.;
- time synchronization between outstations and master station;
- time tagging of information.
3.2.1.2 Extended processing functions
Teleregulation of the generated power (manually or automatically
-
controlled);
automatic power/frequency regulation;
- state estimation;
- automatic load shedding;
- switching programmes;
operator interface (such as system operation, information display);
- information logging and reporting;
data storage (short term/long term) ;
- etc.
3.2.2 Requirements for operational parameters
The following operational parameters are specified within Publi-
cation 870-4:
- reliability;
- availability;
maintainability;
- security;
- data integrity;
- time parameters;
- accuracy.
In specifying the time parameters, particular consideration should be
given to the:
- overall transfer time (sum of the times taken by the information
passing through the individual sections of telecontrol systems, but
also influenced by the network configuration, priority, accumu-
lation of events, etc.);
- parameters for state information, such as separating capability,
time resolution, suppression time, etc.;
- updating time for measured values and set point commands;
etc.
It should be emphasized that in specifying the above-mentioned
parameters the requirements of the process should be considered.

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SIST IEC 60870-1-2:1997
870-1-2 © IEC - 15 -
3.2.3 Detailed specification
The facilities required should be listed and briefly described.
Below is a list of the standard facilities found in telecontrol systems.
Input and acquisition of monitored information
3.2.3.1
- Single point information;
for alarms, state information, faulty state information, etc.
(fleeting information or persistent information);
double point information with or without acquisition of the inter-
-
mediate state
for circuit-breakers, isolators, etc.;
integrated values
for telecounting of energy values, etc.;
incremental information
for flow values, etc.;
measured values (analog or digital) with cyclic or periodic trans-
mission or transmission on demand
for telemetering of electric values, hydraulic values, etc.;
time tagging requirements;
group alarms or common alarms derived from digital or analog
-
information;
information related to the telecontrol system itself, e.g. trans-
-
mission error alarms, equipment failure alarms, etc.;
other types of information.
-
Output and presentation of information
3.2.3.2
State information;
-
double point information with or without indicating the intermediate
state;
alarms, group alarms, common alarms;
-
pulse output or persistent indication of integrated values;
-
analog or digital display or measured values;
-
- information logging;
data storage functions.
-
3.2.3.3 Command input
Switching commands, single commands
-
to change the state of an operational equipment in one direction
(pulse commands or persistent commands);
- switching commands, double commands
for circuit-breakers, isolators, etc.
(pulse commands or maintained commands);

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SIST IEC 60870-1-2:1997
- 17 -
870-1-2 © IEC
- set point commands
values which are transmitted to the controlled equipment;
adjusting commands
for changing the state of operational equipment having more than
two states;
regulating commands (analog or digital)
for closed loop telemonitoring and telecommand
(regulating step commands or persistent regulating commands);
select and execute commands;
- instruction commands
for indicating a standard instruction to operators in the control
room of a manually operated remote station,
e.g. "Start generators";
- command sequences;
- group commands
addressed to several items of equipment at an outstation;
- broadcast commands
addressed to operational equipment at several or all outstations of
a telecontrol system;
- commands related to the telecontrol system itself;
- interrogation commands;
- check commands
e.g. for the purpose of ensuring that the telecontro
...