用于电力系统建模的地磁感应电流频率分量
Frequency Components of Geomagnetically Induced Currents for Power System Modelling
摘要：
电力系统中的地磁感应电流（GIC）通常被建模为直流电流，基于其通常描述的准直流性质。为了建立更具代表性的电力系统动态响应模型，有必要采用低频交流对GIC进行建模。通过对几个电力系统的地磁场测量和GIC的频谱分析，初步结果表明，GIC的频谱取决于地磁扰动的大小和频谱、大地电导率和电网的电气特性。在本文中，基于测量的GIC功率谱的分析表明，GIC建模和仿真中使用的主频通常低于50 mHz。仅使用这些频率引入的相关误差也被量化。结果有影响的建模的地电场诱导GIC，电力系统响应的动态模型和GIC和其相关的驱动领域的需要进行测量的间隔不超过10秒。
英文摘要：
Geomagnetically induced currents (GICs) in power systems are conventionally modelled as direct currents, based on their commonly described quasi-DC nature. For more representative power system dynamic response modelling, it is necessary to model GICs using low-frequency AC. After analysing spectra of geomagnetic field measurements and GICs in several power systems, preliminary results indicate that the GIC spectra depend on the magnitude and frequency spectrum of the geomagnetic disturbance, the earth conductivity and the electrical characteristics of the network. In this paper, analysis based on measured GIC power spectra suggests that the dominant frequencies to use in GIC modelling and simulation are typically below 50 mHz. The associated error introduced by only using these frequencies is also quantified. The results have implications for modelling the geoelectric fields inducing GICs, dynamic models of power system response and the need for GICs and their associated driving fields to be measured at intervals not exceeding 10 s.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
