A control technology based on trend analysis and fuzzy theory was presented and its application in peak clipping, valley filling and maximum demand control area of the power network was introduced.

介绍了一种基于趋势分析和模糊理论的控制技术在电网削峰填谷、最大需量控制领域的应用，简述了其控制工作原理、运行规则和系统组成。

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Principles and virtues of switching power supply of peak current control are presented.

介绍了峰值电流控制开关电源的原理和优点。

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It concludes that reactive compensation can increase power factor. Economical transformer operation can decrease energy loss. Power demand control can shed maximum peak load and lower productive cost.

无功补偿可以提高功率因数，变压器的经济运行可以最大限度地降低变压器的电能损耗，需量控制能够降低企业最大峰值负荷，降低生产成本。

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