Location of significant sources of power quality disturbance in electricity distribution networks

配电网中电能质量扰动的重要来源的位置

• 批准号: 1692934
• 金额: --
• 依托单位: University of Strathclyde
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2015
• 资助国家: 英国
• 起止时间: 2015 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1692934
• 关键词: Location; significant; sources; power; quality

The best electricity supply is of constant magnitude and frequency sinusoidal waveform. However, in reality the non-zero impedance of the network system contributes to the unwanted transients, power harmonics and voltage unbalances. These unwanted characteristics of power supply directly impact the efficiency and performance of electric equipment. If not detected, these could cause serious damage to the supply network, generators, control equipment or other loads. Determining the source of these disturbances is therefore essential. To remain competitive in global market, the need for an affordable, reliable and high quality power must be achieved. The increasing role of power quality is further accelerated by the inclusion of non-linear loads such as switched power supplies, which are found in most electronic equipment nowadays. There is also an increasing penetration of small distributed generators with electronic interfaces between the device and the power system, such as photovoltaic cells, wind turbines, etc. In addition, the commercial aspects of open electricity markets are increasingly stretching power systems' operation closer to their technical limits and narrowing the operational safety margins needed to cope with larger power quality disturbances.This research focuses on determining the location of significant sources of power quality disturbances in electricity distribution network by simulating power harmonics across the gird using real time data from Scottish Power and the University of Strathclyde and developing a practical triangulation method to locate harmonic sources.

最好的电力电源是恒定的幅度和频率正弦波形。但是，实际上，网络系统的非零阻抗有助于瞬态，功率谐波和电压不平衡。这些不必要的电源特征直接影响电气设备的效率和性能。如果未检测到，这些可能会对供应网络，发电机，控制设备或其他负载造成严重破坏。因此，确定这些干扰的来源至关重要。为了在全球市场保持竞争力，必须实现负担得起，可靠和高质量的力量的需求。通过包含非线性载荷（例如开关电源），在当今大多数电子设备中都可以发现，电源质量的提高作用进一步加速了。设备和电力系统之间具有电子界面的小型分布式发电机的渗透率越来越大，例如光伏电池，风力涡轮机等。此外，开放电力市场的商业方面正在越来越多地扩展电力系统的运营，更接近其技术限制，并范围范围更狭窄，范围范围范围范围缩小了较大的电力网络所需的电力范围，该位置扰乱了较大的电力范围，即在较大的电力范围内扰乱了电力范围。使用苏格兰力量和Strathclyde大学的实时数据模拟围栏的功率谐波，并开发一种实用的三角剖分方法来定位谐波来源。