特高压跨区域输电对空气质量的影响研究

Influence of the ultra-high voltage cross-regional transmission on air quality

依托“锡盟—济南”特高压输电工程,根据WRF-Chem V3.7大气化学模式系统对北京及周边地区污染物浓度变化进行模拟和评估,设置不同地点、不同高度、不同排放量等,定量化评估特高压跨区域输电工程对受端区域空气质量的影响。结果表明:不同气象条件下,东南小风的情况下,工程对北京大气环境影响范围最大;根据虚拟电厂的高度,对9 m、27 m、46 m、64 m、91 m、130 m、185 m和255 m高度分别评估,发现在电源点附近,对91 m空间层的大气PM_(2.5)浓度影响最大;远距离输送后,对0—45 m空间高度层的大气PM_(2.5)浓度影响最大;“锡盟—济南”特高压工程配套电源点对北京地区相关污染物浓度变化影响极小。

According to the ultra-high voltage(UHV)transmission project of"Xilin Gol-Jinan",the change of pollutant concentration in Beijing,Hebei,and Tianjin was simulated and evaluated by the atmospheric chemical model WRF-Chem V3.7.The influence of UHV cross-regional transmission on air quality in the affected area was evaluated by setting different locations,heights,and emissions.Results show that the project has the largest impact on the atmospheric environment of Beijing in the case of southeast wind.According to the height of the virtual plant,the concentrations of PM_(2.5) at the height of 9 m,27 m,46 m,64 m,91 m,130 m,185 m,and 255 m were calculated.It is found that the greatest influence on the concentrations of PM_(2.5) is induced at the height of 91 m near the power plant.After long-distance transportation,the power plant has the greatest influence on the concentrations of PM_(2.5) below 45 m.The project of the power plant in"Xilin Go-Jinan"has little impact on the variation of pollutants concentration in Beijing.