一种基于FBD的改进谐波检测算法分析与研究  

An improved harmonic analysis and research detection algorithm based on FBD

作　　者：马涛 俞孟蕻[1] 张春来[1] 

机构地区：[1]江苏科技大学电子信息学院,江苏镇江212003

出　　处：《舰船科学技术》2017年第9期54-58,共5页Ship Science and Technology

基　　金：江苏省产学研联合创新资金--前瞻性联合研究资助项目(BY2013066-08);江苏高校高技术船舶协同创新中心/江苏科技大学海洋装备研究院资助项目(HZ2015006);江苏省科技支撑计划(工业)资助项目(BE2011149);江苏高校优势学科建设工程资助项目

摘　　要：为了快速、准确地检测出钻井船供电系统中的基波和谐波电流,本文提出一种基于FBD的改进谐波检测算法。该算法利用移动窗算法取代传统FBD的低通滤波器(LPF),通过对正序电流畸变率和直流分量响应时间2个指标进行分析,验证改进FBD在谐波电流检测的速度和精度。为了验证改进的算法在钻井船电网工作状态下的效果,本文加入了动态负载验证改进FBD算法。利用Matlab在稳态和动态负载下对正序电流畸变率和直流分量响应时间分别进行仿真,根据实验结果分析,表明算法具有良好的动态响应、检测精度高、易实现等特点。最后用改进的FBD电流检测配合PR控制方式对钻井船复杂电力系统进行补偿,通过观察谐波电流畸变率可知谐波电流补偿的效果,验证了改进FBD的可行性。In order to detect the the fundamental and harmonic current quickly and accurately for drilling ship power supply system, this paper presents an improved algorithm of harmonic detection based on FBD. The algorithm use fully move window algorithm to replace the traditional FBD low-pass filter, ananysising two corenstrate that improved speed and accuracy in FBD harmonic current detection. In order to verify the effectof improved algorithm in drillship grid, but also showed good results, adding a dynamic load FBD demonstrate the improved algorithm. Use Matlab simulationexperi-mentsin steady-state and dynamic loads on the positive sequence current distortion and DC componentssimulate each time,conclude that the algorithm has a good dynamic response, high precision, easy to implement and so on. Finally, thefeas-ibility of improved FBD current detection with PR control mode for drilling rigs compenaste complex power system, we can see the improved effect by observing the harmonic current compensation harmonic current distortion improving verification of FBD.

关 键 词：钻井船 移动窗 动态负载 谐波检测 电流补偿 

分 类 号：U661[交通运输工程—船舶及航道工程]