Researchers led by Germany’s TÜV Rheinland have created a database of technical dangers and mitigation measures for PV installations. Their broad overview of quantification strategies has proven that additional standardization is required.
A gaggle of scientists led by German requirements physique TÜV Rheinland has compiled an in depth overview presenting all semi-quantitative and quantitative methodologies which can be used to evaluate technical dangers in PV techniques.
The researchers based mostly their evaluation on three strategies which can be generally used to quantify the affect of technical dangers. They thought-about failure modes and results evaluation (FMEA), which is a instrument used to decide the impact of every module failure on system operation, as a way to establish and implement corrective actions. In addition they thought-about reliability, availability and maintainability (RAM) evaluation, which is an engineering instrument used to handle operational and questions of safety in techniques. As well as, the researchers adopted the price precedence quantity (CPN) strategy by utilizing the metric CPN, expressed in euros per kilowatt per yr, as an alternative of the danger precedence quantity (RPN), which is a numeric evaluation, usually utilized in FMEA, of danger assigned to a course of.
The lecturers created a danger database protecting the vary of affected parts, the outline of causes and penalties, failure charges, the likelihood of incidence, the affect on key efficiency indicators (KPIs), and the beneficial management and mitigation actions.
“It must be up to date and maintained as a rising information hub by all phases of the challenge,” they stated.
In addition they used the Trust-PV Risk Matrix, which is a standardized taxonomy to enhance and standardize the categorization and the readability of operation and upkeep (O&M) tickets, to explain 30 examples of widespread technical dangers. These examples have been then included in newly developed PV failure truth sheets (PVFSs).
“The danger matrix covers all failures and occasions within the operational part of a PV plant and is subdivided in response to parts, subcomponents and particular person occasions/failures,” the scientists stated.
They outlined their overview in “Identify, analyse and mitigate – Quantification of technical risks in PV power systems,” which was lately printed in Progress in Photovoltaics. They stated they purpose to extend the information of methodologies to evaluate technical dangers and mitigation measures, as a way to examine crucial dangers by amassing case research and updating the database with the acquired info.
“With the information acquired and information collected, the danger and cost-benefit evaluation was demonstrated in a single case research that confirmed strategies for prioritizing selections from an financial perspective and offered vital outcomes for danger managing methods,” they defined. “Nevertheless, offering an summary of quantification strategies, we draw the conclusion that extra standardization is required.”