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首页> 外文期刊>Journal of energy and power engineering >Time Series as an Aid to Research of Traction Substation Load
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Time Series as an Aid to Research of Traction Substation Load

机译：时间序列辅助牵引变电站负荷的研究

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摘要

In the case of electric or tram traction vehicles, the energy for propulsion purposes, as well as all other purposes, is processed and delivered via traction substations. Knowledge of the course of traction substation loading, especially at the stage of its design, is an extremely important issue because of the choice of the processing equipment of the main circuit or protection devices. In the range of investigations of railway traction substation B in vicinity of Cracow (Poland), the measurements of current load in hours 4:00 a.m.-8:00 p.m. were realized. The measurements for the analysis were chosen from those realized between 6:00 a.m.-8:00 a.m. (the morning rush time). Due to the sampling of 2 h summit with a frequency of 2 kHz, the recorded data set contains 1.44 × 10~7 elements. Therefore, the necessary transformation of data was to lower frequency 1 Hz, 10 Hz and 50 Hz. The results of the analysis presented below indicate the effect of such conduct on the obtained results for the parameters of time series models. In view of the unsatisfactory effects of the polynomial approximation, there is a need to seek a more efficient approximation method for achieving the optimum compatibility with the measured process. Continued research should lead to the formulation of procedures, which will determine an acceptable accuracy of the expected variability of traction substation loads.
机译：对于电动或电车牵引车，用于推进目的以及所有其他目的的能量将通过牵引变电站进行处理和传递。由于选择了主回路或保护装置的处理设备，因此对牵引式变电站的加载过程（尤其是在其设计阶段）的了解非常重要。在克拉科夫（波兰）附近的铁路牵引变电所B的调查范围内，测量上午4:00至下午8:00的小时数被实现。分析的测量值选自上午6：00-上午8:00（早上高峰时间）之间实现的测量。由于以2 kHz的频率对2 h峰进行采样，因此记录的数据集包含1.44×10〜7个元素。因此，数据的必要转换是将较低的频率设为1 Hz，10 Hz和50 Hz。下面呈现的分析结果表明，这种行为对时间序列模型的参数所获得的结果产生了影响。鉴于多项式逼近的不令人满意的效果，需要寻求一种更有效的逼近方法，以实现与测量过程的最佳兼容性。继续的研究应导致制定程序，这将确定牵引变电站负荷的预期变化的可接受的准确性。

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