Gis remaining service life assessment methods and systems

The present invention provides a method of evaluation and the remaining service life of GIS systems, the method comprising the steps of: based on the relevant information acquired preprocess obtain a first quantization the quantization result, the basic information comprises manufacturer information, material information, device familial type defect information, load information, environmental information; quantization result of the first process of obtaining a first normalized data vector; status information acquired preprocess obtain a second quantization the quantization result, the status information comprising electrical test contact information, the mechanical properties of the device information, the device information of insulation; the second quantization result obtain a second normalized data vector; vector based on the first data and the second data vector evaluation remaining service life of the GIS; output evaluation result. The present invention comprehensive and objective assessment of the remaining service life of GIS, can save a lot of operation and maintenance costs.