| 引用本文: | 刘兵,阮江军,罗湘,袁翔,余世峰.基于曲线拟合法的新型定制电力设备快速检测算法[J].电力自动化设备,2007,27(9):55-58,82 |
| .Fast detection algorithm based on curve fitting algorithm for custom power device[J].Electric Power Automation Equipment,2007,27(9):55-58,82 |
|
|
| 摘要: |
| 定制电力配套设备的运用可有效地补偿电压暂降和瞬时断电,其研究开发过程中遇到的一大难题是:寻求快速算法,以便在3ms以内检测出电压暂降和瞬时断电。在分析常规保护用检测算法如有效值计算法、缺损电压法、辨别导数算法、三相d-q分解法、利用单相电压延迟60°构造三相虚拟电压d-q变换法和利用求导数法构造三相虚拟电压d-q变换法的优缺点基础上,提出了基于曲线拟合法的快速检测算法。通过研究两采样值积曲线拟合法、三采样值积曲线拟合法的优缺点,比较曲线拟合法与前面提到的检测算法,并比较两采样值积曲线拟合法与三采样值积曲线拟合法,得出两采样值积曲线拟合法更适合于在定制电力配套设备中运用。基于DSP仿真器上编程仿真,分析得到的各种检测算法处理电压暂降的结果波形,证实了该观点。 |
| 关键词: 定制电力,电压暂降,检测算法,导数算法,d-q分解法,曲线拟合法 |
| DOI： |
| 分类号:TM714.2 |
| 基金项目: |
|
| Fast detection algorithm based on curve fitting algorithm for custom power device |
|
LIU Bing RUAN Jiang-jun LUO Xiang YUAN Xiang YU Shi-feng
|
| Abstract: |
| The key technique in the development of power custom devices,which can effectively compensate voltage sags and short interruptions,is the quick detection of voltage sags and short interruptions in 3 ms.Based on the study of different detection algorithms used in protects,such as virtual value algorithm,imperfect voltage algorithm,derivative algorithm,three phase d-q decomposition algorithm,60-degree-delay dummy three phase d-q transform algorithm and differentiate dummy three phase d-q transform algorithm,a fast detection algorithm is presented based on curve fitting.Both two-point curve fitting algorithm and three-point curve fitting algorithm are researched.After comparing all these detection algorithms,it is concluded that,the two-point curve fitting algorithm is the most practical for power custom devices.Simulation of voltage sag processing by different algorithms on DSP proves the conclusion. |
| Key words: power custom,voltage sag,detection algorithm,derivative algorithm,d-q transform algorithm,curve fitting algorithm |
