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CONTRIBUTIONS TO THE DEVELOPMENT
AND IMPROVEMENT OF MAINTENANCE
MANAGEMENT OF CATENARY NETWORKS
FOR RAILWAY ELECTRIC TRACTION
Doru DEMIAN,
Ion GIRNITA,
Carmen ALIC,
Stela RUSU ANGHEL,
Cristina MIKLOS
Modern Conception about the Structure
of the Monitoring Systems used for Catenary Networks
Topics:
Improvement of maintenance management
of catenary network -
PACIFIC
Project
INTERREG
FRANCE – ENGLAND
PACIFIC
Design
CONTRIBUTIONS TECHNIQUES
DESTINÉES A L'AMÉLIORATION ET AU PERFECTIONNEMENT
DANS LE MANAGEMENT DE LA MAINTENANCE DES RÉSEAUX
CATÉNAIRES POUR LA TRACTION ÉLECTRIQUE FERROVIAIRE
analyses et conceptions modernes sur la méthodologie, les procédures,
les systèmes et les équipements pour la surveillance
et le diagnostic technique de la caténaire
ÉTUDE TECHNIQUE
CONCEPTIONS ET BASES DU PROJET
- PREMIÈRE PARTIE -
CATÉNAIRE
analyses et syntheses
Dr. Doru DEMIAN Dr. Ahmed RACHID
AMIENS 2010
CATENARY
analysis and synthesis
CONTRIBUTIONS TO THE DEVELOPMENT AND IMPROVEMENT OF
MAINTENANCE MANAGEMENT OF CATENARY NETWORKS
FOR RAILWAY ELECTRIC TRACTION
Table of Contents:
I.
General. Trends. Objectives
II. Procedural and Technological Evolution in
the Diagnosis of Catenary
III. Modern Concepts Regarding the Catenary
Networks Maintenance
IV. Conclusions and Perspectives
CONTRIBUTIONS TO THE DEVELOPMENT AND IMPROVEMENT OF MAINTENANCE MANAGEMENT
OF CATENARY NETWORKS FOR RAILWAY ELECTRIC TRACTION
1. PERSPECTIVES IN RAILWAY ELECTRIC TRACTION EVOLUTION
Electrical traction is now prevalent in most European rail transport and is still
developing, being very much appreciated, supported and driven by:
- Specialized Community Organizations, …. for sustainable development considerations
- Administrations of Railway Infrastructures, .... on grounds of competitiveness,
attractiveness and economic advantages on the competitive transport market
These elements of superiority are manifested with accentuated progressive intensity
by:
- worldwide acceleration of the pace of electrification works in new construction and
modernization,
- enhancing of speed performance, regularity, capacity and security
Results :
electric traction as dominant formula in rail
modernization perspective ;
standardized quality and performance indicators,
according to the technical railway interoperability
specifications,
with decisive impact on the fundamental characteristics combined in the notion:
QUALITY of ELECTRIC ENERGY CAPTURE
ofTHE
POWER
COLLECTION
MODERN CONCEPTION ABOUTRELIABILITY
THE STRUCTURE OF
MONITORING
SYSTEMS USED FOR CATENARY NETWORKS
CONTRIBUTIONS TO THE DEVELOPMENT AND IMPROVEMENT OF MAINTENANCE MANAGEMENT
OF CATENARY NETWORKS FOR RAILWAY ELECTRIC TRACTION
TRENDS of MODERNIZATION IN RAILWAY ELECTRIC TRACTION,
THROUGH ENHANCING THE QUALITY OF ENERGY CAPTURE
a. PANTOGRAPH - CATENARY INTERACTION
- The energy capture achieved through the electro-mechanical interaction "pantograph catenary" is considered the factor the most difficult to control, affecting strongly,
directly and permanently the quality and the reliability parameters in the electric
traction.
- The contact line parameters have a decisive influence on the quality of the
dynamic coupling between the pantograph mechanism and the catenary suspension,.
- On these parameters acts a wide and diverse range of electrical, mechanical,
geo climatic and environmental quasi-aleatory disturbances, extended
heterogeneously in the network.
Pantograph - improving the active control and
monitoring the contact parameters, in order to
improve the tracking of the catenary dynamics.
Catenary - maintenance improvement, by
optimization of the network monitoring features
and of the maintenance coordination
MODERN CONCEPTION ABOUT THE STRUCTURE OF THE MONITORING SYSTEMS USED FOR CATENARY NETWORKS
CONTRIBUTIONS TO THE DEVELOPMENT AND IMPROVEMENT OF MAINTENANCE MANAGEMENT
OF CATENARY NETWORKS FOR RAILWAY ELECTRIC TRACTION
Catenary suspension
- The contact line networks, basic component with direct and decisive
role in maintaining and improving the main transport parameters
(fluency, regularity, speed and safety) will be placed in the major
interest area​of the railway infrastructure administration;
- Development and increasing traffic demands on quality and reliability
of transport, brings to the forefront the performance indicators, in the
sector of specific maintenance;
- In the overall balance of the rail transportation costs, is found an
increased pressure on the reduction of the maintenance costs share
-Ideal would be to continuously monitor the catenary network,
by measurements and verifications capable of creating databases
for technical diagnostic, analyses and evaluations, able to provide
accurate and operative status reports for the system stabilisation.
MODERN CONCEPTION ABOUT THE STRUCTURE OF THE MONITORING SYSTEMS USED FOR CATENARY NETWORKS
CONTRIBUTIONS TO THE DEVELOPMENT AND IMPROVEMENT OF MAINTENANCE MANAGEMENT
OF CATENARY NETWORKS FOR RAILWAY ELECTRIC TRACTION
b. QUALITY OF ELECTRIC TRACTION SYSTEMS
According to the
LITERATURE SURVEY
RAILWAY STATISTICS
PRACTICAL EXPERIENCE,
quality parameters
Operating
cost
Optimal
level
Achieving
cost
C
O
S
T
Maintenance
cost
and
operating costs
of railways electric traction systems
Reliability
are substantially dependent
RELIABILITY OF CATENARY NETWORK
CONSTRUCTION - conservation capacity of performances –
- limited vulnerability to perturbations
- increased reversibility to failures
MAINTENANCE - quality of maintenance works
- capacity of diagnosis
- correlation of diagnosis and maintenance
MODERN CONCEPTION ABOUT THE STRUCTURE OF THE MONITORING SYSTEMS USED FOR CATENARY NETWORKS
CONTRIBUTIONS TO THE DEVELOPMENT AND IMPROVEMENT OF MAINTENANCE MANAGEMENT
OF CATENARY NETWORKS FOR RAILWAY ELECTRIC TRACTION
TRENDS IN THE MANAGEMENT OF MAINTENANCE
in terms of FINANCIAL and ECONOMIC
Gradually excluding concepts type … COSTS – PERFORMANCES
characterized by: ease in accepting bloated costs for eliminating all the potential risks,
… provided initially valuable statistical studies, on which the systematic maintenance procedures
have been established …but with some exaggerations
… as expected, theoretically idealised, has been refuted in practice.
Gradually excluding concepts type … COSTS – RISKS
characterized by : raising the awareness of the technical condition ,
… based on surveillance and verification of functionality and wear.
… correlated with the type and density of traffic and with the related disturbances and efforts,
… updated and analysed one by one on sections,
Normal
Extended
Low
leads to lower the maintenance costs at acceptable risk limits.
life
life
in terms of PROCEDURE and TECHNOLOGY
Gradually excluding concepts type :
SYSTEMATIC and
CORRECTIVE MAINTENANCE
Progressive adopting :
CONDITIONAL, FORECASTING
AND AMELIORATIVE
MAINTENANCE PROCEDURES
F
A
I
L
U
R
E
S
Superior
diagnosis
life
Mentenanta
superioara
Inferior
diagnosis
Inferior
maintenance
TIME
MODERN CONCEPTION ABOUT THE STRUCTURE OF THE MONITORING SYSTEMS USED FOR CATENARY NETWORKS
CONTRIBUTIONS TO THE DEVELOPMENT AND IMPROVEMENT OF MAINTENANCE MANAGEMENT
OF CATENARY NETWORKS FOR RAILWAY ELECTRIC TRACTION
3. CURRENT TECHNOLOGIC AND LOGISTIC STAGE
-A massive concentration of studies and theoretical research on the
development of database structures, algorithms for statistical analysis
of reliability, maintainability, quality, and forecasting the catenary
behaviour.
-Applicative technical research highly oriented towards
computer equipments, mainly dedicated to the inspection of the
Currently we catenary parameters and other parameters that can influence
find:
the quality of capture.
-The ratio between the design and construction costs
of high performance systems,
and the costs due to their non-use is, in terms of
management, net favourable to the massive
refurbishment.
MODERN CONCEPTION ABOUT THE STRUCTURE OF THE MONITORING SYSTEMS USED FOR CATENARY NETWORKS
CONTRIBUTIONS TO THE DEVELOPMENT AND IMPROVEMENT OF MAINTENANCE MANAGEMENT
OF CATENARY NETWORKS FOR RAILWAY ELECTRIC TRACTION
CURRENT DIAGNOSIS EQUIPMENT:
MODERN CONCEPTION ABOUT THE STRUCTURE OF THE MONITORING SYSTEMS USED FOR CATENARY NETWORKS
CONTRIBUTIONS TO THE DEVELOPMENT AND IMPROVEMENT OF MAINTENANCE MANAGEMENT
OF CATENARY NETWORKS FOR RAILWAY ELECTRIC TRACTION
Conclusion about the EVOLUTION IN THE DIAGNOSIS OF CATENARY:
Related to the current requirements and performance:
- The catenary still represents the most sensitive and difficult to control element
in the railway traction systems.
- This subsystem breakdowns create the most expensive and difficult to avoid
emergency situations.
The allocation, even oversized, of maintenance equipment and
specialists, but without the proper equipment to determine the frequently
updated real technical condition and the catenary behaviour
prognosis is : - an economically inefficient solution,
- procedurally inadequate,
- technical underperforming,
- absonant to the current requirements of
quality, reliability, flow and transport safety.
The main obstacle limiting the quality of maintenance management consists
of the principled inability to perform an optimal coordination of work and, therefore,
an effective cost control.
The phenomenon is due to the fact that the available information are generally
indirect, late, insufficient and inadequate.
CONTRIBUTIONS TO THE DEVELOPMENT AND IMPROVEMENT OF MAINTENANCE MANAGEMENT
OF CATENARY NETWORKS FOR RAILWAY ELECTRIC TRACTION
3.MODERN CONCEPTS REGARDING THE CATENARY NETWORKS MAINTENANCE
the paper
a methodology for the implementation and practical operation of the
presents
theoretical concept of “RETURN ON EXPERIENCE” – REX.
-based on a concept of integrated and complex supervision, named
structure – ranking - equipment distribution – procedures – hardware – software
is of NEURAL NETWORK (RN) - SYSTEM EXPERT (SE) type
- characterized by:
Architecture: structured, hierarchical and technologically improved;
Operation: recurrent, gradually coordinated by self-training;
Equipment distribution: suitable for the catenary network;
Capacity to develop and transfer reports: on-line.
features and
- interconnection of a set of monitoring equipments and procedures, selfimprovable and self-adaptable, providing effective capability to exercise a high
quality and continuous perfectible maintenance management, with optimal
executive potential.
MODERN CONCEPTION ABOUT THE STRUCTURE OF THE MONITORING SYSTEMS USED FOR CATENARY NETWORKS
CONTRIBUTIONS TO THE DEVELOPMENT AND IMPROVEMENT OF MAINTENANCE MANAGEMENT
OF CATENARY NETWORKS FOR RAILWAY ELECTRIC TRACTION
MONITORING SYSTEM COMPONENTS
MINIMAL DIAGNOSTIC EQUIPMENT - EMD
-Implemented, assigned by sections, for the minimal diagnostic of the catenary technical
condition; Controlled by the SE and able to manage the minimal inspection program.
- Self-trainable based on the analysis of inspections history .
- Recording, processing and viewing of the information stored in the minimum punctual package
of data (PMPD)
-Always accessible for the maintenance team, being extremely useful in applying corrective
operative procedures by the cycle detection - fix - test, in case of non-conformities identified on
their route
- create the conditions for actually applying REX in the operative practice;
COMPLEX DIAGNOSTIC EQUIPMENT - ECD
- Unique on the network, installed on a laboratory wagon, to evaluate the technical condition of
the catenary, with superior inspection performance, extended to all the analysis parameters and
algorithms;
-The investigation can be made with or without contact, the full recording provides a complex
punctual package of data (PCPD)
-is useful for the sweep of the catenary and for the commissioning of a new electrified railway
section
MODERN CONCEPTION ABOUT THE STRUCTURE OF THE MONITORING SYSTEMS USED FOR CATENARY NETWORKS
CONTRIBUTIONS TO THE DEVELOPMENT AND IMPROVEMENT OF MAINTENANCE MANAGEMENT
OF CATENARY NETWORKS FOR RAILWAY ELECTRIC TRACTION
MONITORING SYSTEM COMPONENTS
QUALITY INSPECTION EQUIPMENT FOR ENERGY CAPTURE - EVQ
-Implemented on the electric locomotives, used for automatic recording of the catenary warning
indices and the dynamic parameters of the locomotive in the poor capture moments;
- The data packages (PVPD) contains only the nonconformities and the running dynamic
parameters.
RN EQUIPMENT FOR INTERCONNECTION
Implementation of RN equipment, such that the SE module will be able:
- to acquire self-training information;
-to be accessible to the distributed systems for REX and the modification of the
imposed exigency parameters;
-to manage on-line the entire inspection program;
-to provide online status reports and technical forecasting of complex catenary
networks, strictly dedicated to the user;
-to draw-up adaptive-optimized programming reports for the works.
MODERN CONCEPTION ABOUT THE STRUCTURE OF THE MONITORING SYSTEMS USED FOR CATENARY NETWORKS
CONTRIBUTIONS TO THE DEVELOPMENT AND IMPROVEMENT OF MAINTENANCE MANAGEMENT
OF CATENARY NETWORKS FOR RAILWAY ELECTRIC TRACTION
As a result of the procedure:
- For a section (V) inspected in the
points (1...m) of the route, at the time
(T) it results the matrix of the
measured values, MV,T (pkj).
- Repeating the measurements at the
times T1,T2,... Tx and comparing all
the differences between the recorded
values:
with the values of minimum deviation, emergency warning and breakdown,
Dm, Da, Ds, correlated with the times Tu when they occurred,
we obtain the minimum time difference after which in the point (j) the
parameter (Pk) was significantly changed in relation with the basis of
comparison.
- The algorithm is repeated for each point on the section and for each parameter,
ultimately determining the minimum periods sought.
- Running under self-improvement, allows optimal scheduling of the inspections and
ensure, with a prescribed probability, the early detection of each change of
parameter values.
CONTRIBUTIONS TO THE DEVELOPMENT AND IMPROVEMENT OF MAINTENANCE MANAGEMENT
OF CATENARY NETWORKS FOR RAILWAY ELECTRIC TRACTION
4. CONCLUSIONS AND PERSPECTIVES
The proposed methodology provides the principles of digitizing applied:
- to the inspection for a section of catenary,
- to ensure continuity in the recovery of information,
- to replace the continuous monitoring of the catenary with its episodic inspection
(within the imposed accuracy and requirements)
Extending the reasoning for the catenary network, it can be optimized by setting up
the “levels of competence” of the equipments and the ranking of the process
monitoring through a RN
Technologically, the conclusion is that the implementation of RN and SE to be used
for control and technical diagnosis:
-generates appropriate conditions for the application of the monitoring
methodology of the catenary networks,
- creates the potential to improve and optimize the management of maintenance in a
manner conceptually modern, scientifically and technologically underlain.
MODERN CONCEPTION ABOUT THE STRUCTURE OF THE MONITORING SYSTEMS USED FOR CATENARY NETWORKS
... c'est peut-être la raison pourquoi ...
la caténaire est ... féminin ! et le panto est ... masculine !
... mais il doit suivre la locomotive ... une autre ... féminin !!!
et parfois, quand il se détache de la lourde locomotive
et il s'attache romantique à la souple caténaire
Eh bien, donc, nous tous ...
des ingénieurs manque de la noblesse ...
et de la sensibilité de sentiment poétique ...
sans admirer les feux d'artifice ...
... être humain...faire la preuve de compassion !
... le pantographe est seul !!! ... sous haut tension !!!