| 一种基于HHT的光伏并网发电系统保护方法 |
| |
| 引用本文： | 程宏波,陈臣,王勋,伦利,闫俊丽. 一种基于HHT的光伏并网发电系统保护方法[J]. 电测与仪表, 2016, 53(12): 7-12. DOI: 10.3969/j.issn.1001-1390.2016.12.002 |
| |
| 作者姓名： | 陈臣 王勋 伦利 闫俊丽 |
| |
| 作者单位： | 华东交通大学电子与电气工程学院,南昌,330013 |
| |
| 基金项目： | 国家自然科学基金资助项目(51267004)；江西省科技厅项目(2144BBE50008)；南昌市科技局项目(1023HZCG013) |
| |
| 摘 要： | 当光伏发电系统所连电网发生短路故障时,光伏电源的故障电流会发生暂态突变,但由于逆变器控制电路的保护作用,短路电流的幅值较小,因而传统的保护方法对光伏并网发电系统不一定适用。为寻求适合光伏并网发电系统的保护方法,建立了基于PSCAD/EMTDC的光伏并网发电系统仿真模型,对其短路电流的特性进行了仿真分析,利用希尔伯特-黄变换(HHT)对故障电流的波形进行分解,提出一种基于HHT的光伏并网发电系统保护方法,并进行了算例分析。结果表明,在含有光伏发电的电网发生短路故障时,该保护方法具有一定的有效性和可行性。
|
| 关 键 词： | 光伏并网发电系统 保护 故障分析 HHT |
| 收稿时间： | 2015-03-05 |
| 修稿时间： | 2015-05-19 |
A protection method of grid connected PV power system based on HHT |
| |
| Cheng Hongbo,Chen Chen,Wang Xun,Lun Li and Yan Junli. A protection method of grid connected PV power system based on HHT[J]. Electrical Measurement & Instrumentation, 2016, 53(12): 7-12. DOI: 10.3969/j.issn.1001-1390.2016.12.002 |
| |
| Authors: | Cheng Hongbo Chen Chen Wang Xun Lun Li Yan Junli |
| |
| Affiliation: | School of Electrical and Electronic Engineering,East China Jiao tong University,Guangzhou Power Supply Bureau,School of Electrical and Electronic Engineering,East China Jiao tong University,School of Electrical and Electronic Engineering,East China Jiao tong University,School of Electrical and Electronic Engineering,East China Jiao tong University |
| |
| Abstract: | When the short circuit faults of grid-connected PV ( photovoltaic ) power system supply occurred , the fault current of PV power happens transient , due to the protective effect of inverter control circuit , the amplitude of fault current is small , as a result that the traditional detection methods cann ’ t satisfy the requirements of grid connected PV generation .In order to seek protection method for grid-connected PV power system , the simulation model was set up based on PSCAD/EMTDC, the characteristics of the short-circuit current are analyzed , and Hilbert-Huang transform ( HHT) was proposed to decompose the fault waveform of current , which found the instantaneous frequency of the fault current is changing when single-phase to ground fault occurs , with this the protection scheme of grid connected PV system based on HHT is proposed .The effectiveness and feasibility of this protection scheme are verified . |
| |
| Keywords: | grid-connected PV generation system protection fault analysis Hilbert-Huang Transform |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《电测与仪表》浏览原始摘要信息 |
|
点击此处可从《电测与仪表》下载免费的PDF全文 |
|
