蔡德华,程乐峰,周彬,陈韦宇,余涛.基于HST模型的变压器寿命评估和优化检修系统开发[J].电测与仪表,2015,52(20):. CAI De-hua,CHENG Le-feng,ZHOU Bin,CHEN Wei-yu,YU Tao.Development of the transformer life assessment and optimized maintenance system based on HST model[J].Electrical Measurement & Instrumentation,2015,52(20):.
基于HST模型的变压器寿命评估和优化检修系统开发
Development of the transformer life assessment and optimized maintenance system based on HST model
The maintenance mode of power transformers currently is regular maintenance and which has been widely used. It is key to correctly to evaluate the reliability level of transformer in operation condition, which is directly related to the success of maintenance, based on this, the power transformer lifetime evaluation and optimized maintenance model based on HST (hot spot temperature) is developed in this paper, in this model, the reaction speed theory of Arrhenius and Weibull Distribution is as fundamental theories, which were used to describe the aging process of transformer and get the transformer failure rate , and then the equations with exponential form to compute HST, namely, calculate the top oil temperature relative to the environment temperature , and the increment of top oil temperature and the hysteretic temperature , thus can get the HST (equal to the sum of the aforementioned three variables). Meanwhile, based on the model, the software analysis system based on Java language and Mysql database was developed, the transformer maintenance process was optimized in the system, and then the statistical analysis was made aimed at the hot spot area in the designed system, finally the diagnosis results were obtained correspondingly. The designed model and system can effectively reduce the maintenance frequency, and improve the utilization coefficient of transformer, and improve the equipment reliability.
