statex®
BAUR software for the statistical estimation of the cable life time engineered by KEPCO.
Determine the remaining life time of cable routes
All asset managers aim to keep medium-voltage cables in service for as long as possible without jeopardising security of supply. BAUR has the solution: The new statex® analysis software evaluates the data from the dissipation factor measurement (tan δ measurement) and uses a patented algorithm to calculate the statistical remaining life time of cables – more accurately and clearly than ever before.
statex® – the BAUR innovation
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Significant potential savings through maximum utilisation of medium-voltage cables
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More accurate planning of investments year on year
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Targeted measurements – better overview of the condition of the overall cable network
... and all while significantly improving security of supply!
The advantages of the statex® software at a glance
Condition of the cable network at a glance
Targeted investment planning
Cost reduction
Accumulation of experience
Contribution to sustainability
statex® as a key element of cable diagnostics
Electricity is an essential part of our daily lives. That's why it's so important to keep the electrical infrastructure in good condition and guarantee security of supply. This would not be possible without cable diagnostics. BAUR brings together the latest and most precise tools for cable diagnostics under one roof.
Our product video explains the role that the statex® software plays in all this.
The statex® analysis software is used for the detailed determination of the ageing condition, the speed of ageing and the statistical remaining life time of a cable route based on the dissipation factor diagnostics with VLF truesinus® voltage (Very Low Frequency). Taking into consideration individual company guidelines and the visualisation of complex correlations between the various analysis parameters in a 3D matrix, statex® offers a new, ground-breaking option for cost-effective, operationally safe asset management. statex® = statistics and experience
In addition to the conventional evaluation parameters of IEEE 400.2 (SDTD, MTD and ΔTD) , the statex® also takes into account a new parameter - TD-Skirt - which illustrates the time stability of the dissipation factor (TD). This makes it possible to calculate the ageing index R and the speed of ageing VR of the cable route. It is also possible to receive an exact recommendation for when a subsequent measurement should be performed, or when work is required on the cable route. The economical operating limit of the cable and a company-specific safety margin are also incorporated in the calculation, which determines the optimal point in time to replace the cable.
statex® software in pictures
Figure 1:
Cable network with individual cable routes shown according to operational age and actual condition
The cable condition depends on various factors such as the service life, mechanical and electrical structure, electrical load, mechanical load, moisture, etc.
There is no direct relationship between duty period and ageing!
Figure 2:
DSP (degradation starting point)
In the first phase, the cable barely ages at all. Early failures are usually caused by installation faults or poor cable quality. These can be prevented by commissioning testing including partial discharge and dissipation factor measurement (BAUR Software 4)
The degradation starting point represents the statistical start of ageing in a cable.
Figure 3:
Economical operating limit
The economical operating limit indicates the range in which the cable has a higher probability of failure. This is based upon findings from the analysis of 15,000 measured cable routes with the same cable types.
statex® software in pictures
Figure 4:
Critical point (CP)
Each company can add a company-specific safety margin to the economical operating limit based on its own philosophy. Combining these two ranges allows the critical point (CP) to be determined. Once a cable reaches this condition limit it needs to be replaced.
Figure 5:
Speed of ageing
The speed of ageing is calculated using the degradation starting point and the first dissipation factor measurement. The statistical remaining life time can be determined as soon as the first dissipation factor measurement has been taken.
Figure 6:
Statistical remaining life time
By taking into account the results from other dissipation factor measurements, the result of the statistical remaining life time can be adjusted to current conditions. The remaining life time can thus be extended by several years between 2 measurements.
The software also provides a recommended date for the next measurement .
Diagnostic measurements and statistical analysis
Reliably predict the remaining life time of medium-voltage cables
With a consistent workflow from cable diagnostics through to evaluation, Baur GmbH provides asset managers with a solution for diagnosing the condition of medium-voltage cables. Statistical estimation of the cable lifetime now completes the package. Valuable knowledge regarding the remaining useful life enables investment in replacement cables to be planned more precisely and their implementation to be postponed for several years in many cases.
statex® Software licences at a glance
The statex® software packages allow you to select the version that best meets your needs – for maximum benefits in your everyday practice. The core version is a great place to start, while the pro version gives the best functional scope and software features. An additional licence allows you to use the pro licence on multiple PCs – for maximum information.
Explanatory video
Explanatory video: statex® - Statistical estimation of remaining cable life time (EN subtitles)
The statex® analysis software is used for the detailed determination of the ageing condition, the speed of ageing, and the statistical remaining life time of a cable route based on dissipation factor diagnostics with VLF (Very Low Frequency) truesinus® voltage.
Explanatory video: home of diagnostics
BAUR unites high-end measuring devices with the latest software under one brand. We provide our measuring devices together with BAUR Software 4 for diagnostics, which are easy to integrate in existing routines resulting in comparability and time savings. The combination of these elements with the statex® software and our experience in cable diagnostics make BAUR your go-to partner for diagnostics!
Infographics
statex® at a glance
The area of application and potential summarised in a clear graphic.
Product information
Literature
Press
December 2021
Remaining life time of medium-voltage cables
New possibilities for advanced dissipation factor diagnostics
Many outdated, contradictory, or incorrect perceptions about dissipation factor diagnostics and the associated condition analysis of medium-voltage cables prevail.
December 2019
Diagnostic measurements and statistical analysis:
Reliably predict the remaining life time of medium-voltage cables
With a consistent workflow from cable diagnostics through to evaluation, Baur GmbH provides asset managers with a solution for diagnosing the condition of medium-voltage cables. Statistical estimation of the cable lifetime now completes the package. Valuable knowledge regarding the remaining useful life enables investment in replacement cables to be planned more precisely and their implementation to be postponed for several years in many cases.
June 2019
Reliable estimation:
statistical remaining cable life time with statex®
If you want to keep your medium-voltage cables in service for as long as possible without jeopardising security of supply, statex® from BAUR is the planning tool you need. The new analysis software evaluates the data from the dissipation factor measurement (tan δ measurement) and uses a patented algorithm to calculate the statistical remaining cable life time.
Paper
Cable testing and cable diagnostics
Paper
Statistical approach to condition assessment and estimation of remaining life of medium voltage cables (Part 3)
The comprehensive understanding of the remaining life time of medium voltage cables was the key motivation for extensive cable diagnostics performed by the Korean Electric Power Corporation (KEPCO). Since 2011 more than 15,000 cable routes were diagnosed to assess the cable condition. A unique algorithm and evaluation logic was developed for accurate estimation of the remaining life time of XLPE power cables. The approach was evaluated over the past two years leading to appropriate assessment results. A study on the applicability of this methodology on other utilities network is shown in this study.
Cable testing and cable diagnostics
Paper
Statistical approach to condition assessment and estimation of remaining life of medium voltage cables (Part 2)
This study addresses one of the most important questions for operators of underground distribution networks. How can the remaining life of underground power cables be estimated? The answer to this question is explained using a new approach from KEPCO Korea.
Cable testing and cable diagnostics
Paper
Statistical approach to condition assessment and estimation of remaining life of medium voltage cables (Part 1)
This paper describes a new approach to statistically estimate the remaining lifetime of power cables, which allows underground cables to be operated up to the operational limit.
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