Power transmission and transformation project cost intelligent evaluation system and evaluation method

The invention relates to a power transmission and transformation project cost intelligent evaluation system. The system comprises a data input module, a first analysis module, a second analysis module, a third analysis module, a data center and an early warning and output module. The data input module realizes input of power transmission and transformation project information; the data center stores power transmission and transformation historical cost data, general cost, standard reference price and equipment material price. The first analysis module, the second analysis module and the thirdanalysis module acquire benchmark data of the power transmission and transformation project, perform deviation analysis on the construction cost data of the project and the benchmark data, and mark abnormal data if the deviation exceeds a certain proportion; and an abnormal result obtained by analysis is transmitted to an early warning and output module. According to the method, factors such as design schemes, historical