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The wind-solar-load correlation model is the basis for accurately evaluating the reliability of offshore wind power-photovoltaic-energy storage grid connected system. To solve the problem of high-dimensional wind-solar-load correlation modeling, a hybrid time-varying Copula model based on vine structure was proposed. By combining the actual wind farm output, photovoltaic power station output and grid load data, eight wind-solar-load combined Copula models were established, and the proposed model had more advantages than other models by using two common evaluation criteria of optimal model. Taking the measured data of wind farms and photovoltaic stations in Shandong province as examples, eight groups of models were analyzed and compared in IEEE-RTS79 system with wind farms and photovoltaic stations. The results show that the proposed Copula function model can more accurately describe the multi-dimensional wind-solar-load correlation. However, other existing models underestimate the impact of the wind-solar-load correlation on system reliability. After adding the energy storage device to the test system, other models also have deviations in the selection of the optimal wind-solar installed capacity ratio, the selection of storage power station capacity and the evaluation of power fluctuation.

Add SBS modified asphalt with 10% rock asphalt and 15% rubber powder as base material, and mix 0, 0.1%, 0.3%, 0.5% basalt fiber and appropriate basalt grade gravel to make asphalt flexible pavement mixture. The effect of basalt fiber content on road performance of pavement asphalt mixture was studied. The results show that with the increase of basalt fiber content by 0, 0.1%, 0.3%, 0.5%, the rutting test dynamic stability, low temperature bending failure strain and water immersion Marshall residual stability of pavement asphalt mixture increase first and then decrease, normal temperature bending failure strain is gradually increased. Adding appropriate amount of basalt fiber can effectively improve the road performance of the prefabricated curable asphalt mixture. [ABSTRACT FROM AUTHOR]