为保证沙州750 kV变电站电气设备外绝缘全复合化设计顺利实施,对750 kV变电站电气设备外绝缘全复合化设计的关键技术进行研究。研究内容包括提高复合绝缘材料耐风沙性能及耐紫外线性能技术、提高环氧树脂绝缘材料弹性模量成型技术、750 kV主变压器及高压电抗器出线套管研制技术、750 kV复合支柱隔离开关研制技术、72.5 kV复合柱式断路器研制技术等。上述关键技术的顺利完成,对于确保复合绝缘材料首次在750 kV变电站全面应用的安全性与可靠性具有重要意义。

As the most widely used device in the var compensation field,static var compensator(SVC) plays an important role in enhancing the grid reliability,improving the transmission limit and damping power oscillation,etc.The capacity of SVC installed in the key substations grows with the expansion of the power grid.This has put forward the heat increase of the valve.Based on the design of valve cooling-system of high-voltage large capacity,this paper briefly summoned the basic demands and constitution of cooling-system,analyzed the heat-dissipation in detail,and proposed a new design scheme to adopt dual parallel branch waterway for each level cooling-circuit of valve.

In order to find the relationship between environmental pollution and economic development,by using correlation analysis and regression analysis method,this paper selected environmental and economic data from 1989 to 2009 of Zibo to establish the model of GDP per capita and per capita emissions of pollutants.The paper found that the EKC of Zibo does not fully comply with the typical shape of environmental Kuznets Curve.The curve of industrial waste water which has not yet reached a turning point takes the shape of the left part of the inverted U;The curve of industrial waste gases takes the shape of inverted U and the turning point in GDP per capita of nearly 5 million;The industrial solid waste curve takes the shape of U plus inverted U.This paper analyzed the reasons for this phenomenon and gave the corresponding recommendations for the problems.

本文以济南市环保局发布的《2011年济南市环境质量报告书》为依据,就该年度济南市区部分道路交通噪声监测结果为研究对象,对道路交通噪声的原因、危害及其防治对策进行分析,以期教育人们学会如何减少道路交通噪声污染,提高广大市民生活环境质量。