放电性故障点定位用到达时间差估算方法在多径传播环境中的适用性
发布时间：2018-10-14 11:14
【摘要】：输配电设备绝缘材料的劣化会导致火花放电的产生。较强放电所激发的电磁波会对线路周边的通信设备及电磁环境造成影响。为避免对通信设备造成电磁干扰,需及时准确地探查此类放电性故障点的位置。在基于超高频定位方法中,由于电力设备金属表面会引起电磁波反射,致使到达定位用天线阵列的电磁波信号经历多径传播。天线所采集到的电磁波波形中包含了大量干扰成分,导致定位准确度较差,无法满足定位需求。深入研究各种到达时间差的估算方法及基于到达时间差估算结果的定位算法,并通过数值仿真研究其在多径传播环境中的适用性及定位准确度。
[Abstract]:The deterioration of insulation materials in transmission and distribution equipment will lead to spark discharge. The electromagnetic wave excited by strong discharge will affect the communication equipment and electromagnetic environment around the line. In order to avoid electromagnetic interference to communication equipment, it is necessary to detect the location of such discharges in time and accurately. In the ultra-high frequency (UHF) based localization method, the electromagnetic wave signals arriving at the antenna array for positioning are multipath propagated because of the electromagnetic wave reflection caused by the metal surface of the power equipment. The electromagnetic wave waveform collected by antenna contains a large number of interference components, which leads to poor positioning accuracy and can not meet the needs of location. The estimation methods of time difference of arrival and the localization algorithm based on the result of time of arrival estimation are studied in depth. The applicability and accuracy of location in multipath propagation environment are studied by numerical simulation.
【作者单位】： 南方电网科学研究院有限责任公司;
【基金】：南方电网科学研究院有限责任公司青年科技创新基金(2015)资助项目
【分类号】：TM855
，
本文编号：2270288
[Abstract]:The deterioration of insulation materials in transmission and distribution equipment will lead to spark discharge. The electromagnetic wave excited by strong discharge will affect the communication equipment and electromagnetic environment around the line. In order to avoid electromagnetic interference to communication equipment, it is necessary to detect the location of such discharges in time and accurately. In the ultra-high frequency (UHF) based localization method, the electromagnetic wave signals arriving at the antenna array for positioning are multipath propagated because of the electromagnetic wave reflection caused by the metal surface of the power equipment. The electromagnetic wave waveform collected by antenna contains a large number of interference components, which leads to poor positioning accuracy and can not meet the needs of location. The estimation methods of time difference of arrival and the localization algorithm based on the result of time of arrival estimation are studied in depth. The applicability and accuracy of location in multipath propagation environment are studied by numerical simulation.
【作者单位】： 南方电网科学研究院有限责任公司;
【基金】：南方电网科学研究院有限责任公司青年科技创新基金(2015)资助项目
【分类号】：TM855
，
本文编号：2270288
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