Regional power distribution network comprehensive situation assessment method based on massive renewable energy access

The invention provides a regional power distribution network comprehensive situation assessment method based on mass renewable energy access. The method comprises the following steps: step S1, constructing an assessment index system from a security situation, an economic situation, a low-carbon situation and a regulation situation; S2, constructing a comprehensive situation assessment model of the regional power distribution network; S3, collecting related expert evaluation information, converting fuzzy semantic evaluation information by using a trapezoidal fuzzy number basic theory, and generating quantitative information for calculation; and S4, evaluating the comprehensive situation of the regional power distribution network by adopting an MARCOS method. According to the method, the fuzzy theory based on fuzzy mathematics is adopted, fuzziness widely existing in the real world is taken as a research object, a fuzzy set is taken as a basic tool, the fuzziness of objects is grasped theoretically, accurate de