一种新的短路电流计算和故障分析方法,适用于双风电场组
Jun Yin1, Weichen Qian1, Xiaobo Huang1
1School of Electrical Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, China.
Sensors (Basel, Switzerland)
|October 28, 2023
概括
由于它们的短暂行为和电网合,分析组合风电场中的断裂电流是复杂的. 这项研究开发了一种新方法,用于计算双重供应的风电场群组中的短路电流,并具有低压的通行控制.
科学领域:
- 电气工程 电气工程
- 可再生能源系统可再生能源系统
- 电力系统分析 分析 分析
背景情况:
- 风电场集团表现出复杂的短暂特征和强大的电网合,使故障分析复杂化.
- 现有的方法很难准确地建模双风力轮机 (DFIG) 的影响及其在电网故障期间的控制策略.
- 准确的故障电流计算对于电网稳定性和保护至关重要,随着风力发电集成的增加.
研究的目的:
- 开发一种新的短路电流计算方法,用于双的风电场集团.
- 分析低压通行控制 (LVRT) 对DFIG中故障电流的影响.
- 为改进电网故障分析提供基础. 风电场集团集成后.
主要方法:
- 建立了转换器输入输出特征的数学模型.
- 开发了一个临时的DFIG模型,其中包含了对短路电流的LVRT控制效应.
- 为DFIG群体提出了一个短路电流计算方法,分析了故障期间的农场间相互作用.
- 使用实时数字模拟 (RTDS) 验证了该方法.
主要成果:
- 为带有LVRT控制的DFIG组建立了一个经过验证的短路电流计算模型.
- 分析了风力发电场在故障期间之间的相互作用机制.
- RTDS模拟证实了拟议的计算方法的准确性.
- 该研究提供了对DFIG组访问后电网故障分析的见解.
结论:
- 开发的方法准确计算了DFIG组中的短路电流,考虑到LVRT.
- 这项研究提高了对具有显著风力发电透率的电网故障行为的理解.
- 这些发现支持对具有集成风电场的电力系统进行更可靠的电网保护和稳定性分析.
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