CAJ | 학술논문

针对现有输电线舞动测量精度不高、数据传输量过大等局限性,在现有微位移测量的微波比相测距技术工作的基础上,提出了1种基于智能天线、扩频技术的特高压输电线舞动监测方案,并对系统的工作原理进行了详细阐述。方案中智能天线对安装在特高压输电线上的多个无线电信标的空间角、距离信息进行监测,利用角度和距离信息计算获得特高压输电线舞动量。针对多信标的空间角估计需求,提出了1种基于平面阵的酉-旋转不变参数估计的改进算法,并对算法进行了仿真分析。仿真结果表明,提出的算法可以精确估计信标的角度信息,结合微波比相测距技术得到的距离信息,可对特高压输电线舞动进行高精度实时监测。
침대현유수전선무동측량정도불고、수거전수량과대등국한성,재현유미위이측량적미파비상측거기술공작적기출상,제출료1충기우지능천선、확빈기술적특고압수전선무동감측방안,병대계통적공작원리진행료상세천술。방안중지능천선대안장재특고압수전선상적다개무선전신표적공간각、거리신식진행감측,이용각도화거리신식계산획득특고압수전선무동량。침대다신표적공간각고계수구,제출료1충기우평면진적유-선전불변삼수고계적개진산법,병대산법진행료방진분석。방진결과표명,제출적산법가이정학고계신표적각도신식,결합미파비상측거기술득도적거리신식,가대특고압수전선무동진행고정도실시감측。
Considering the shortcoming of existed galloping measuring systems,including lack of accuracy and heavery load of data transmission.We proposed a galloping monitoring system for ultra-high voltage transmission line by the smart antenna and spread spectrum technique,and analyzed the working principle of the system in detail,in which the directions and ranges of the beacons,equipped on the ultra-high voltage transmission line,are monitored by the antenna array.The galloping of the ultra-high voltage transmission line is calculated with these directions and ranges information.According to the multiple beacons telemetry,a two-dimensional spread spectrum unitary estimation of signal parameter via rotational invariance technique algorithm is proposed and numerically simulated.The simulation results show that this system can estimate the direction information of the beacons accurately,combined with the distance information gathered by the microwave phase-comparing range measuring technology,the galloping of ultra-high voltage transmission line can be real-time monitored with a high accuracy.