2results about How to "Will not affect safe operation" patented technology

The invention discloses an oil-immersed transformer oil tank internal temperature field distribution detection method and system, and the method comprises the following steps: 1) manufacturing a distributed temperature measurement device, and placing the distributed temperature measurement device in an oil tank, so as to detect the temperature data of the front and side surfaces in the transformer oil tank; 2) connecting the distributed temperature measuring device with an external demodulation unit to obtain temperature data, performing data cleaning on the obtained temperature data, and removing abnormal temperature data; and 3) performing grid division on the front surface and the side surface in the oil tank, calculating grid type temperature data of each grid point based on the cleaned temperature data, and drawing a temperature field distribution cloud picture in the transformer oil tank based on the grid type temperature data. Partial discharge caused by insulation damage due to the fact that the optical fiber is directly installed on the winding and the iron core can be effectively avoided, insulation of the winding and the iron core is not affected once the optical fiber is damaged, temperature field distribution in the oil tank can be accurately obtained, and the device has the advantages of being safe, efficient, easy to replace, high in measurement precision and the like.

The application discloses a low-voltage area house-phase-box-transformer identification method and system, comprising the following steps: based on the power conservation principle, an optimization model is constructed, the similarity of the user electric meter power curve and the phase power curve of the meter box node is calculated, the user is distributed to the phase with the highest similarity, and the house-phase correlation identification is completed; the electric meter address and the collected data are read through the physical communication interface between the low-voltage measurement switch and the user electric meter. The method disclosed by the application fuses multi-source data, fully utilizes the steady-state data and address information of the electric meter, and innovatively proposes a load transient event, so that the box-transformer identification accuracy is improved through the strong features of the signal of the load transient event; the meter box node is taken as an intermediate node, the house-phase relationship identification is realized through the steady-state power conservation, the box-transformer relationship identification is realized through the load transient event, and the calculation is simple and the identification accuracy is high.