在不正确信息下计算0.4 Kv馈线的功率损耗,创新了几代负载电流动态管理模型

J. V. Shitikova, S. Shelyug
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引用次数: 0

摘要

由于具有非线性伏安特性的电能消费者所占比例的增加而引起的非正弦电流对损耗量的影响越来越大。不同的电流幅值和相位畸变程度也是重要的影响因素。现有的计算功率损耗的方法要么只考虑有效电流值(俄罗斯普遍接受的做法),要么考虑电流曲线形状的正弦畸变(IEEE标准1459-2010,IEEE标准519-2014)。本文介绍了在电压为0.4 kV的三相四线输电线路中,负荷电流描述不正确的情况,并研究了电流曲线形状的畸变对损耗量的影响。结果表明,在不正确指定的负载下,功率损失量可能超过正弦波情况下的功率损失量数倍。
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Calculation of power losses in feeders 0,4 Kv with incorrect information about the load current dynamic management model of innovations generations
The non sinusoidal currents, which is caused by the increase in the percentage of electric energy consumers with nonlinear volt-ampere characteristic, has an increasing influence on the amount of losses. The different currents amplitude and the degree of distortion in phases are also the significant factors. Existing methods for calculating power losses either take into account only the Effective current values(the generally accepted practice in Russia) or take into account the sinusoidal distortion of the shape of the current curve (IEEE Std1459-2010, IEEE Std 519–2014). In this paper, the cases of incorrect description of the load current are described and the effect of distortion of the curve's shape of the flowing current on the amount of power losses in a three-phase four-wire transmission line with a voltage of 0.4 kV is investigated. It is shown that the amount of electric power losses at an incorrectly specified load can exceed the amount of electric power losses of a sinusoidal case by several times.
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