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暂态电能质量实时监测和分析系统 被引量:10
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作者 冯浩 谢盛平 郑贺伟 《电子测量技术》 2011年第1期109-114,共6页
一套完整的电能质量监测装置要求能够同时对各种稳态和暂态电能质量信号进行实时监测和分析,而现有的监测装置仅有少数具有暂态监测和分析功能,且只涉及到电压暂降、电压暂升和短时电压中断这3种扰动信号。为了对目前各种常见暂态电能... 一套完整的电能质量监测装置要求能够同时对各种稳态和暂态电能质量信号进行实时监测和分析,而现有的监测装置仅有少数具有暂态监测和分析功能,且只涉及到电压暂降、电压暂升和短时电压中断这3种扰动信号。为了对目前各种常见暂态电能质量扰动信号进行实时监测和分析,提出了一种以移动离散小波变换算法为核心,虚拟仪器为平台的设计方案,所设计出的系统可以根据用户的需要实现在线和离线分析,能够实时地检测到常见暂态电能质量扰动信号的多个参数指标,同时能够对扰动信号进行准确而又快速的分类。最后,通过实验验证了该系统的实用性和可靠性。 展开更多
关键词 电能质量 暂态扰动 移动小波变换 虚拟仪器 实时监测
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Short Term Wind Power Prediction Using Wavelet Transform and ARIMA
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作者 In-Yong Seo Bok-Nam Hat +3 位作者 Sang-Ok Kin Won Nam-Koong Dong-Wan Seo Seong-JunKim 《Journal of Energy and Power Engineering》 2012年第11期1786-1790,共5页
A sustainable production of electricity is essential for low carbon green growth in South Korea. Although wind energy is unlimited in potential, both intermittency and volatility should be tackled for smart grid integ... A sustainable production of electricity is essential for low carbon green growth in South Korea. Although wind energy is unlimited in potential, both intermittency and volatility should be tackled for smart grid integration in future. To cope with this, many works have been done for wind speed and power forecasting. It is shown that statistical techniques are useful for short-term forecasting of wind power. This paper presents a statistical wind speed forecasting. The wavelet decomposition is employed as a de-noising technique. An illustration will be given by real-world dataset. According to the result, the MAD (mean absolute deviation) is improved as much as 10%. 展开更多
关键词 Wind speed forecasting autoreressive model wavelet decomnosition mean absolute deviation.
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