Transcript Polskie Towarzystwo Przesyłu i Rozdziału Energii Elektrycznej

Operator of the trunked radio system for the Polish Power Distribution
Companies
TETRA Experience 2006 Congress
Warsaw, June 13-14, 2006
Trunked Radio Dispatcher
System for the Polish Power
Energy Distribution Companies
- Case Study
Authors:
Jerzy Andruszkiewicz
Stefan Wieczorek
Polskie Towarzystwo Przesyłu i Rozdziału Energii Elektrycznej
Polish Power Transsmision and Distribution Association
strona 1
Operator of the trunked radio system for the Polish Power Distribution
Companies
Electric Power Distribution Companies in Poland
Polskie Towarzystwo Przesyłu i Rozdziału Energii Elektrycznej
Polish Power Transsmision and Distribution Association
strona 2
Operator of the trunked radio system for the Polish Power Distribution
Companies
Dispatcher radio system for distribution companies – basic requirements
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Assuring of energy safety of the country and proper
functioning of technical services requires
independent dispatcher radio system for support
and maintenance of the power distribution system –
the system should have specific dispatcher functions
and should work in emergency and critical states.
Existing networks of public operators do not assure
proper work in emergency and critical states, they are
not resistant to extreme hazard conditions, they do
not cope with special dispatcher functions and are
not resistant to sudden traffic increase.
Polskie Towarzystwo Przesyłu i Rozdziału Energii Elektrycznej
Polish Power Transsmision and Distribution Association
strona 3
Operator of the trunked radio system for the Polish Power Distribution
Companies
Resources of distribution companies:
Infrastructure of analog radio network – Digicom 7
 431 base stations, in particular:
- 400 have their own antenna masts
(40 and 60 m above terrain level) localized in own
premises
– - 31 localized in leased premises
 Radio Base Stations (RBS) are connected with Central Nodes
(CN) of each distribution company (ZE) by means of mainly own
analog and digital (fiber optic) links.
 Radio channels in the 410 - 430 MHz band (12,5 kHz)
Polskie Towarzystwo Przesyłu i Rozdziału Energii Elektrycznej
Polish Power Transsmision and Distribution Association
strona 4
Operator of the trunked radio system for the Polish Power Distribution
Companies
Radio coverage of the analog network used by the distribution
companies in the 410 - 430 MHz band:
– approx. 80% of Poland’s area,
- 31 local networks belonging to the distribution
companies (ZE) and one interregional network
(Mazovian group),
- the national network does not exist (including
corporation networks in the new distribution
companies’ structure)
- approx. 75% of own links connecting RBS with CN
Polskie Towarzystwo Przesyłu i Rozdziału Energii Elektrycznej
Polish Power Transsmision and Distribution Association
strona 5
Operator of the trunked radio system for the Polish Power Distribution
Companies
BS sites of the analog dispatcher radio system for power distribution
companies in Poland
Polskie Towarzystwo Przesyłu i Rozdziału Energii Elektrycznej
Polish Power Transsmision and Distribution Association
strona 6
Operator of the trunked radio system for the Polish Power Distribution
Companies
Simulation of digital radio system coverage based on analog BS sites
Polskie Towarzystwo Przesyłu i Rozdziału Energii Elektrycznej
Polish Power Transsmision and Distribution Association
strona 7
Operator of the trunked radio system for the Polish Power Distribution
Companies
Tests of digital radio networks in distribution companies
The comparison tests of radio coverage for analog
system and two digital systems (TETRA, P.25) have
shown that effective coverage is comparable for all
systems (for minimum electric field intensity values
required for proper work in the distribution company
network).
It means that existing BS sites can be used together
with new sites filling the gaps in coverage (approx.
150-160 new sites). It will allow to minimize additional
capital expenditures.
Polskie Towarzystwo Przesyłu i Rozdziału Energii Elektrycznej
Polish Power Transsmision and Distribution Association
strona 8
Operator of the trunked radio system for the Polish Power Distribution
Companies
Present and future needs of radio system users:
- voice communications – voice transmission,
- high speed data links,
- better coverage,
- access to the national radio system and to other networks,
- higher level of data confidentiality and work security in the
network,
- dispatcher network functions, including service priorities,
- the system should be independent of other radio networks –
easy access in emergency conditions (high traffic).
Polskie Towarzystwo Przesyłu i Rozdziału Energii Elektrycznej
Polish Power Transsmision and Distribution Association
strona 9
Operator of the trunked radio system for the Polish Power Distribution
Companies
Concept of building the common radio network for many users:
- possibility to use one radio system by many users having
different services, transmission security measures and privacy,
- reduction of the unit cost of system purchase and unit
maintenance cost (per one user),
- optimum use of the system resources,
- effective use of the frequency band and spectrum
management (esp. with 12.5 kHz raster),
- effective use of human resources for system maintenance.
Polskie Towarzystwo Przesyłu i Rozdziału Energii Elektrycznej
Polish Power Transsmision and Distribution Association
strona 10
Operator of the trunked radio system for the Polish Power Distribution
Companies
TETRA network user groups – shared resources
grupa główna
(cała sieć)
Modem Bank
Independent VPNs
Modem Bank
Modem Bank
Modem Bank
Modem Bank
Modem Bank
Modem Bank
Modem Bank
grupa stosująca
enkrypcję
korespondencji
Polskie Towarzystwo Przesyłu i Rozdziału Energii Elektrycznej
Polish Power Transsmision and Distribution Association
strona 11
Operator of the trunked radio system for the Polish Power Distribution
Companies
Most important reasons for power distribution radio system digitalization
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Transition from analog to digital systems is obligatory due to the
national regulation body (UKE) policy and international
agreements.
Radio transmission permits obtained by the power distribution
companies will expire in a few years.
Users have new demands coming from the technology
development (most of them requires digital transmission).
IP protocol allows convergence and integration of various
transmission media.
Outdated and run-down existing equipment must be replaced.
Polskie Towarzystwo Przesyłu i Rozdziału Energii Elektrycznej
Polish Power Transsmision and Distribution Association
strona 12
Operator of the trunked radio system for the Polish Power Distribution
Companies
Digitalization of the radio system for the power distribution companies will
allow:
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Optimum usage of the allocated frequency band
Effective usage of existing technical resources – BS infrastructure and
digital links,
Reduction of capital and maintenance expenditures for the new
network,
Scalability of the radio system,
Tailoring the system to the changing users’ needs,
Independent and safe work of the radio network in emergency cases,
Cooperation of the users’ groups created ad hoc during disasters of any
type and cooperation with other emergency services,
Protection and confidentiality of transmitted data.
Access of other cooperating users (e.g., PSE, cooperating companies)
to the network resources as VPNs.
Polskie Towarzystwo Przesyłu i Rozdziału Energii Elektrycznej
Polish Power Transsmision and Distribution Association
strona 13
Operator of the trunked radio system for the Polish Power Distribution
Companies
Expected effects of radio network digitalization
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Optimum usage of the allocated frequency band via
optimization of BS sites – BSs in the border areas
between neighbouring distribution companies will be
removed
Maximum usage of existing infrastructure belonging
to distribution companies
Better coverage due to 30% increase of BS’s number
Improvement of service quality and digital
transmission of data
Polskie Towarzystwo Przesyłu i Rozdziału Energii Elektrycznej
Polish Power Transsmision and Distribution Association
strona 14
Operator of the trunked radio system for the Polish Power Distribution
Companies
Project of the final system configuration
KONSOLA
BT
S
BT
BT
S
BT
S
S
PSTN
BT
S
Tetra network
NETWORK
MANAGEMENT
STATION
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PABX
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NETWORK
MANAGEMENT
SERVER
DISPATCHER’S CONSOLE
Polskie Towarzystwo Przesyłu i Rozdziału Energii Elektrycznej
Polish Power Transsmision and Distribution Association
strona 15
Operator of the trunked radio system for the Polish Power Distribution
Companies
System architecture – main aspects
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Integration of the radio system based on IP architecture
Most favorable variant – development of corporation networks
being the elements of the national network
System integration with PSTN, PABX, public GSM and UMTS
networks
Possibility of emerging independent VPNs for various related
users,
Access to internal departamental IT resources
Network reconfiguration possibility depending on the current
needs
Polskie Towarzystwo Przesyłu i Rozdziału Energii Elektrycznej
Polish Power Transsmision and Distribution Association
strona 16
Operator of the trunked radio system for the Polish Power Distribution
Companies
Summary (1):
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Due to the increasing demand of the power distribution sector,
esp. for the data transmission, and due to the state of the
existing analog network, it is absolutely necessary to begin
actions resulting in network modernization and improved quality
of services.
Analysis of the digitalization possibility of the power distribution
companies’ dispatcher radio network shows that digitalization
based on the existing IT resources is possible.
It is necessary to establish the rules, organization scheme and
the development possibility of the digital radio network together
with other potential users in Poland
It is necessary to develop detailed technical and financial
analysis, feasibility study, technical projects and to raise
investment funds.
Polskie Towarzystwo Przesyłu i Rozdziału Energii Elektrycznej
Polish Power Transsmision and Distribution Association
strona 17
Operator of the trunked radio system for the Polish Power Distribution
Companies
Summary (2):
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It is possible to optimize development costs of the radio network
due to the existing infrastructure of the distribution companies,
allocated frequency band and building a nationwide network
It is necessary to find the strategy for further activities in the
area of using the existing resources, finding new finance
sources necessary for modernization or development of a new
network and cooperation with other users.
An independent dispatcher radio network is a guarantee that the
Polish power distribution system will work correctly and safely.
Polskie Towarzystwo Przesyłu i Rozdziału Energii Elektrycznej
Polish Power Transsmision and Distribution Association
strona 18