在MV和LV交流电网中超声波扭曲的影响
Andrea Mariscotti1, Alessandro Mingotti2
1Department of Electrical, Electronic and Telecommunications Engineering, and Naval Architecture (DITEN), University of Genova, 16145 Genova, Italy.
Sensors (Basel, Switzerland)
|April 27, 2024
概括
2 kHz至150 kHz范围内的超声波 (SH) 对电网构成风险,导致电力损失和设备故障等问题. 这项研究分析了SH的影响,并建议对电网监控和仪器变压器精度进行标准化.
科学领域:
- 电气工程 电气工程
- 电力系统分析 分析 分析
- 电磁兼容性 电磁兼容性 电磁兼容
背景情况:
- 电源质量 (PQ) 对电力资产和负载至关重要,最近的重点转移到超声波 (SH) 频率范围 (2 kHz150 kHz).
- 这种SH范围包含来自电子设备的排放,切换非线性和共振,与传统波不同.
研究的目的:
- 分析超声波对电网运行和资产的影响.
- 确定关键的负面影响,包括功率损失,组件加热,介电器老化和干扰电源线通信 (PLC).
- 提出SH现象的极限,并讨论标准化,电网监控和仪器变压器 (IT) 的准确性.
主要方法:
- 详细分析了电力网络中超声波的记录下来的负面影响.
- 基于共享假设的SH现象的潜在极限的推导.
- 对仪表变压器关于SH扭曲的当前规范要求的适用性评估.
主要成果:
- 超声波会导致重大问题,如电源损耗增加,电网元件加热,介电材料的加快老化,中压 (MV) 电缆终端故障等.
- SHs干扰敏感的电子设备,并破坏电源线通信 (PLC) 系统.
- 现有的和极限对于SHs来说是不够的;对于电网监控和IT性能,需要新的标准化.
结论:
- 超声波对电网稳定性和设备寿命构成越来越大的威胁.
- 标准化工作必须解决SH缓解,监测和仪表变压器等测量设备的准确性.
- 积极评估和管理SH扭曲对于未来的电力系统可靠性至关重要.
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