水利水电建设与新一轮的西部大开发

针对我国西部水利水电资源极为丰富的特征及社会各界对水利水电开发产生的误解，结合国家西部大开发战略，分析了我国西部水资源开发现状，并与国外进行了比较，结果表明，我国水电开发程度还比较低，而发达国家的水电开发程度普遍比较高，生态环境也越好。因此，片面强调原生态不仅不是什么生态文明，而是一种生态愚昧。西部经济发展的本身，必须解决好水资源时空分布不均的矛盾，发挥西部某些地区的资源优势。我未来的发展必然要依靠清洁能源和可再生能源的可持续发展，可以说，中国可持续发展的希望在西部大开发的成败。

Water Conservancy and Hydropower Construction and New Round of West Development

eliable distinguishing between the magnetic inrush current and inside fault is essential in the transformer differential protection, as it determines the correct operating rate of the transformer differential protection. This paper introduces one case of transformer differential protection misoperation caused by magnetic inrush current, analyzing the configuration of its transformer differential protection, data of the failure recorder and the operation behavior. Through an in-depth analysis of the harmonic data and the waveform of the magnetic inrush current in the transformer based on the theory of secondary harmonic restrain principle and the dead angle restrain principle, the paper proposes a countermeasure strategy of modification for the setting data related to the transformer differential protection. The analyzing method and analysis procedure can serve as references for future studies.