The working principle, the method to calculate the ratio of transformation and algorithm of filtering capacity are also studied in this paper.

本文分析了其工作原理，变压器变比的确定方法，滤波能力计算方法。

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Experiments show that wavelet filtering can enhance the small fault detection capacity and detect more timely compared with exponentially weighted moving average (EWMA) filter.

实验表明，小波滤波法能提高小故障的检测能力，而且与指数权重滑动平均滤波法相比更具有故障检测的及时性。

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Powdered activated carbon to high-quality wood and other wood as raw materials, production of zinc chloride, have developed in the pore structure, adsorption capacity, fast filtering features.

木质粉状活性炭以优质的木屑等为原料，采用氯化锌法生产，具有发达的中孔结构，吸附容量大、快速过滤等特性。

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