Research On Reliability Testing Of The Secondary Equipment In Power System

From the talk of disaster grid accident, leads to the concept of product reliability, starting from the origin of the reliability discipline reviews the development of reliability engineering disciplines at home and abroad to carry out research in reliability, the reliability of the electric power industry research, and described the significance of the study of reliability.The importance of reliability after that, from the commencement of the definition of reliability, research and exploration method to test the reliability of products, how to reflect the reliability of the product by testing, at this stage of our study purpose is to enhance the reliability of product quality, will Reliability checks and control products brought into the entire development and production of which is currently owned by laboratory equipment, and a lack of equipment in the future in-depth research institute, the judge, the laboratory already has conducted preliminary research on product reliability capabilities. With the existing equipment, from the Generalized deep into the chivalrous, the affect the reliability of the main aspects of the transition to a multi-faceted, the long-term verification tests come out a way to quickly identify defects test, for the following products to be judged by HALT & HASS Test Reliability laid a theoretical foundation.Throughout the reliability test borrowed HALT & HASS Test Method, select the appropriate accelerated stress (pilot project), analysis of the relationship between life and reliability accelerated stress and proposes a theoretical equation. Then select the appropriate step and step accelerated stress time, by selecting the uniform specifications of the sample, conduct real HALT testing process, get HALT test result, the original test data.With the experimental data after the adoption of the industry’s more well-known reliability analysis software:ALTA data were analyzed to give a sample of reliability-life curve. Analysis of the distribution of life, select the appropriate accelerated stress point to verify the correctness of the theoretical model, experimental verification by HASS temperature and humidity both ultimately affirmed the existing theoretical models can really reflect the actual reliability of the product. In order to make a more convincing theoretical model, we selected five additional sets of series of products, repeated HALT & HASS test to verify that the final test data and test results with theoretical models are very fit, then conducted a more accelerated stress The attempt by the temperature and humidity combined stress of accelerating to verify ALTA software for more computing power combined with stress, to explore the effect of multiple stress test model.Combination of the above theoretical analysis and experimental results, and ultimately summed up with the theory of reliability, plus HALT & HASS testing methods, coupled with ALTA Software (theoretical model) can effectively reflect the actual reliability of products, research and development and in the future Production can by means of this set of models and test methods to improve the reliability of indicators, to protect the security and stability of operation.