31results about How to "The evaluation results are scientific and reasonable" patented technology

The invention relates to a water resource energy efficiency extension ecological evaluation method based on an improved distance. The method comprises the following steps: water resource energy efficiency data of an object to be evaluated is obtained in various investigation ways, a comprehensive evaluation index system represented by multidimensional matter elements is established, an ideal region, a feasible region and an optimal value are obtained through the set of an expected value, correlation function calculation of each evaluation index is realized so as to carry out initial evaluation, each index of the evaluation object meeting the requirement is normalized, four different weight coefficient assignment methods are compared to give the superiority of a weight coefficient method based on the improved distance, and the extension evaluation result and the difference are analyzed. The invention provides the evaluation method with balanced weight coefficient assignment, a simple and clear evaluation way and an objective and fair evaluation result.

The invention discloses a regional water bearing capacity calculation method based on an extension conduction effect. The calculation method comprises the following steps of: 1) considering condition differences such as coupling relationship and area between different design elements, and determining design variables of a proposed water station, indicator elements of reach evaluation and the calculation method; 2) building and designing a problem model between the problems, and carrying out correlation analysis so as to obtain a nuclear problem model and a conduction contradiction ring; and 3) researching a conversion mechanism of the conduction contradiction ring, providing an active variable, and building an extension transformation operation model to calculate the conduction effect between different design elements so as to obtain a comprehensive evaluation result; and comprehensively considering an ecological index, a social index and an technical index by classification comparison of the result so as to finally obtain an optimal scheme, and applying to regional water bearing capacity calculation of 27 reaches of Zhejiang water resources to achieve regionalization. According to the invention, the relevance and conduction between the design variables of the proposed water station and the design elements of the regional water bearing capacity are fully considered; and the problem of incompatibility is effectively achieved, and the calculation process is concise and clear, objective and strong in practicability.

The invention provides a method for evaluating operational risk of wind power farms in combination with weather and wind speed, comprising the following steps of: a, determining outage probability of equipment components under the current weather within an evaluation cycle; b, constructing a time sequence through an ARMA model and performing matrix transformation, thereby obtaining a wind speed sequence of each wind power farm; c, obtaining a system state according to the outage probability of the current weather, and performing sampling through a non-sequential Monte Carlo method; d, adding 1 to number of sampling, obtaining wind speed of each wind power farm at the current time, and calculating output of each wind power farm; e, according to output of each wind power farm, screening out a load bus meeting a preset condition, and corresponding load shedding value of the load bus, accumulating the load shedding value, and taking the accumulated value as minimum loss load quantity of the system; f, according to the minimum loss load quantity, calculating a risk indicator; g, when risk indicator variance is less than precision each time, returning back to the step d; and otherwise, outputting the risk indicator. By implementation of the method and the system provided by the invention, accuracy and reliability of evaluation of operational risk of the wind power farms can be improved, and evaluation result can be more scientific and rational, and has extensibility.

The invention discloses a method for evaluating damage to the fishery from marine oil spill through employing structural equation fuzzy integrated assessment, and belongs to the field of environment protection. The method comprises the steps: firstly extracting factors which determines the degree of damage to the fishery resources from the marine oil spill pollution, analyzing the relation between the fishery resource damage degree and the factors, and building an index system for evaluation of the damage to the fishery resources from the marine oil spill pollution; secondly constructing a structural equation model, determining key factors determining the damage degree, the weight of the damage degree and key factors and the weight of each key factor and the corresponding index; finally carrying out the fuzzy integrated evaluation and analysis of the degree of damage to the fishery resources from the marine oil spill pollution through combining with the weights. According to the invention, the structural equation model is introduced in the fuzzy integrated evaluation, thereby solving an indeterminacy problem of the damage degree of the fishery resources, and the accurate mutual relation among the factors enables the evaluation result to be scientific and reasonable and to accord with the reality.