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Summary of Work - STP Module 3:  Cable Networks

1997/98

Summary of Year 1 (1997/98) Deliverables

Project:

S0302:  Time domain reflectometry to locate wet cable sections 

Deliverable:

Report on existing equipment

Deliverable:

Report on trials

 

 

Project:

S0305:  On line condition monitoring and fault location for cables

Deliverable:

Report on on-line conditions monitoring methods

Deliverable:

Report on on-line fault location methods

 

 

Project:

S0307:  Environmental audit for cables

Deliverable:

Final report on environmental impact of cables

 

 

Project:

S0313:  Investigation into failure of dry terminations in cable boxes, through discharges external to the termination

Deliverable:

Final report on investigations into external ionization failures

 

 

Project:

S0315:  Remaining life of paper cables

Deliverable:

Optimum method for accelerating cable deterioration and assessment of the value of diagnostics

Deliverable:

Assessment of remaining life of recovered samples through either accelerated voltage or high frequency

 

 

Project:

S0316:  Monitor developments in polymeric insulation for wet and dry cable design

Deliverable:

Recommendations on expected performance on new materials and review of developments

 

 

Project:

S0323:  Obtain information to maximise information on cables in service

Deliverable:

Review of information which would assist in establishing the life of paper insulated cables

 

 

Project:

S0326:  RCM Studies

Deliverable:

Introductory RCM course

Deliverable:

Further studies.  Training for companies.

 

 

Project

S0329:  Unified cable records

Deliverable:

Information to be included in 11 kV and 33 kV cable records

1998/99

Summary of Year 2 (1998/99) Deliverables

Project:

S0309:  Development of step voltage to breakdown tests of 11kV cables and accessories

Deliverable:

Baseline for pass/fail criteria

Deliverable:

Results of tests on accessories, Test Specification

 

 

Project:

S0310:  Underground cable fault detector using multi element gas sensing

Deliverable:

Interim off-the-shelf chemical sensor for gas-sensing cable-fault detector

Deliverable:

Benchtop precursor of proposed electronic gas-sensing cable-fault detector

Deliverable:

Prototype electronic gas-sensing cable-fault detector

 

 

Project:

S0318:  Environmental consequences of current cable practice abandoning oil assisted cables

Deliverable:

Scoping study

Deliverable:

Recommendations on implications of present practice

 

 

Project:

S0320:  Monitor developments in polymeric insulator for wet & dry cable design

Deliverable:

Report on likely performance of accessories with bonded insulation screen on 11 kV cables

Deliverable:

Report on experience and present situation in North America with emphasis on insulations and service expectation in European applications

 

Report on new developments

 

Report on cable and water treeing for comparison with long term tests

 

 

Project:

S0321:  Group Administration, Co-ordination and meetings

Deliverable:

Provide administrative support to the steering group, covering co-ordination and meetings costs

 

 

Project:

S0322:  On line cable rating with DTS calibration 

Deliverable:

Scoping study comprising detailed definition of requirements market review and feasibility study

 

 

Project:

S0323:  Obtain information to maximise information on cables in service

Deliverable:

Report in form of fact sheet on information obtained

 

 

Project

S0327:  Optimising information on paper cables

Deliverable:

Report on methods to improve discharge mapping information

Deliverable:

Report on additional mapping information and the failure position

Deliverable:

Report on useful information obtained and establishing of information based at EA Technology

Deliverable:

Report on the effect of water and the possibility of detection of wet cables

Deliverable:

Reports on possibilities of adding material to cable

 

 

Project:

S0328:  Support:  Cable with water foil barrier

Deliverable:

To provide some technical support to the development of a dry cable construction

 

 

Project:

S0332:  RCM for Cable Systems

Deliverable:

Report on application of RCM to HV cable system

 

 

Project:

S0334 - Up to date information on polymeric cables and diagnostics formerly S0320D (parts A & B)

Deliverable:

Report at year end of new developments

 

 

Project:

S0335 - Examination and fingerprinting of 18 cables from BCMC - formerly S320E - increase of funds by 8,000 to cope with 18 samples

Deliverable:

Report on insulation and boundaries

 

 

Project:

S0336 - Application of oil analysis to cables

Deliverable:

Report

 

 

Project:

S0337 - Effect of water on PD mapping and DC spectroscopy

Deliverable

Report on effects of water on discharges and DC spectroscopy

 

 

Project:

S0338 - Rehabilitation of paper insulated cables

Deliverable:

Report on previous work and feasibility of possible methods

1999/2000

Summary of Year 3 (1999/2000) Deliverables

Project:

S0318 - Environmental consequences of current cable practice abandoning oil assisted cables

Deliverable:

Recommendations on potential alternative treatments

Deliverable:

Assessment of effectiveness and costs of alternative treatments

 

 

Project:

S0328:  Support:  Cable with water foil barrier

Deliverable:

To provide some technical support to the development of a dry cable construction

 

 

Project:

S0330 - Review of fault finding on mixed dielectric circuits

Deliverable:

Report on tasks

 

 

Project:

S0332:  RCM for Cable Systems

Deliverable:

Report on application of RCM to HV cable system

 

 

Project:

S0333 - Step voltage to breakdown testing of single phase 11kV polymeric cables and accessories

Deliverable:

Report detailing all results and conclusions

 

 

Project:

S0341 - Improving the effectiveness of water blocking materials for polymeric cables

Deliverable:

Report and recommendations

 

 

Project:

S0343 - Furanic analysis of papers

Deliverable:

Report on furanic analysis of papers from failed cable

 

 

Project:

S0345 - Further tests on British cable makers confederation polymeric cables

Deliverable:

Report on BCMC cables and cables in database

 

 

Project:

S0348 - Water tree testing on six North American cables

Deliverable:

Report on initial examination of the six cables

 

 

Project:

S0350 - Failures occurring within house service fuse units

Deliverable:

Written report on 'Scoping Survey'

 

 

Project:

S0353 - Analysis of RCM report and incorporation of proposals into costing spreadsheet

Deliverable:

An easily assimilated summary of the Aladon report

Deliverable:

A spreadsheet that enables members to tailor the cot analysis to suit their individual circumstances

 

 

Project:

S0354 - Step Voltage to Breakdown Testing of single phase 11 kV polymeric cables and accessories

Deliverable

Report - "Step Voltage to Breakdown Testing of 11 kV three phase trifurcating transition joints"

 

 

 

 

2000/2001

Summary of Year 4 (2000/2001) Deliverables

Project:

S0351 - The effect of DC testing on the life of high permittivity materials in accessories

Deliverable:

Report including suggestions for further work

 

 

Project:

S0354 - Step voltage to breakdown testing on 11kV transition joints

Deliverable:

Written report

 

 

Project:

S0355 - RCM for LV cables

Deliverable:

Facilitator's formal RCM report

Deliverable:

EA Technology report analysing formal report's findings

Deliverable:

Report:  An RCM study of LV cables

 

 

Project:

S0356 - Reducing the incidence of third party damage

Deliverable:

Report on ways to reduce third party damage

Deliverable:

Report:  Reducing the incidence of third party damage

 

 

Project:

S0359 - Fire performance cables for use in special installations

Deliverable:

Report with performance specifications

 

 

Project:

S0360 - Guidelines for laying cables in contaminated ground

Deliverable:

Report with guidelines

 

 

Project:

S0361 - Further support work for dry polymeric cable

Deliverable:

Final report

 

 

Project:

S0362 - Neural networks for incipient failure prediction - Stage 4:  development of neural network model

Deliverable:

Stage 4 report documenting findings

Deliverable:

Focus report detailing the technique, analysis and results of this Stage (refinement of model)

Deliverable:

Report:  "Prediction of incipient faults in paper insulated cables using self-organising maps"

 

 

Project:

S0363 - Cable condition measurement by high frequency injection

Deliverable:

Measurement system

Deliverable:

Stage 3 report

Deliverable:

Report:  "Development of an interative data processing technique to reconstruct the dielectric profile of cables

 

 

Project:

S0364 - Polymer degradation issues relevant to the electricity industry

Deliverable:

Report (based on EA Technology archives) outlining failure modes, case studies and pointers for avoidance of failures

 

 

Project:

S0366 - Field trial on the removal of fluid from an end-of-life cable

Deliverable:

Report:  "Field trial on the removal of oil from disused cables:  Interim report"

Deliverable:

Report:  "Field trial on the removal of oil from disused cables:  Final report"

 

 

Project:

S0459 - Ultrasonic examination of distribution plant (costs shared by Modules 3 and 4)

Deliverable:

PhD Thesis

2001/2002

Summary of Year 4 (2001/2002) Deliverables

Project:

S0362 (Final Stage) - Neural networks for incipient failure prediction

Deliverable:

Report:  "Self-Organising Maps for the condition assessment of 11kV paper cables"