【作者】 付海艳；

【导师】 张国庆；

【作者基本信息】 哈尔滨工业大学 ， 电气工程， 2011， 硕士

【摘要】 近年来,随着电网技术的不断发展,对电力系统的安全性要求也越来越高。光学电流互感器能够测量、监控电力系统的状态,保证电力系统的安全可靠运行。但是由于光学电流互感器的传感单元受到温度漂移、长期运行稳定性等问题的制约,目前还无法大规模的应用。现有的理论与实验研究大部分都是针对传感单元整体的,因此需要针对其具体模块进行深入讨论与分析,研究传感单元的各个组成部分在实际运行中受到的具体影响因素对其的影响,便于寻找提高其整体性能的方法,这也正是本文利用软件联合仿真搭建光学电流传感单元仿真分析平台的目的所在。本文以琼斯矩阵为光学电流传感单元的数学模型基础,研究光学器件本身质量好坏、环境温度变化、相间干扰等实际影响因素对传感单元性能的影响,并利用MATLAB软件编辑传感单元的分析程序。基于传感单元的分布参数数学模型,借助Ansoft、Ansys有限元分析软件进行仿真,建立光学电流互感器传感单元处于不同情况下的磁场及温度场信息库。利用程序调用信息库中对应的不均匀磁场及温度场,做到仿真环境与传感单元实际受到的不均匀磁场及温度场分布情况相符。利用LabVIEW与MATLAB软件混合编程编辑了平台界面,实现了完整的光学电流传感单元仿真分析平台。通过将仿真输出结果与已有理论分析结果进行对比,验证了仿真平台的有效性与正确性。将仿真平台作为分析工具针对磁场均匀度、温度场及不同干扰场对传感单元的性能影响进行初步分析,展示了仿真分析平台的功能,证明了其具有工程实际应用价值。更多还原

【Abstract】 In recent years, with the continuous development of our power grid, the demands of the power system’s security is also higher and higher. The optical current transformer can measure and monitor the state of power system, to ensure the safety and reliable operation of the system. But due to the restriction of the temperature drift and long-term stable operation of the sensor unit, optical current transformer still can’t be used widely. The existing theoretical and experimental are almost to study the whole transformer, So we still need to do further discuss and analysis the specific module of optical current transformer’s sensor unit and study the influence of the specific factors, it is facilitate to looking for ways to improve its performance, it is also the aim of we realize the sensor unit simulation platform which used of hybrid simulation.In this paper, we use the Jones matrix as the mathematical model, to realize the analysis program which has think about the device quality, the environmental temperature and the interference by the software of MATLAB. Using the distribution parameters mathematical model, with the element analysis software Ansoft and Ansys we have established the powerful database of magnetic field and temperature field in different conditions, then, we call the corresponding magnetic field and temperature field in the program, realize the simulation environment and the actual magnetic and temperature field of sensor unit are agreement. Finally, we editor platform interface by the LabVIEW software to make the platform’s operation more convenient.Through the compare of simulation output and theoretical analysis results, we has proved the effectiveness and correctness of our simulation. Using this simulation platform as a analysis, preliminary analysis the influence of magnetic field uniformity, temperature field and different disturbance field. Demonstrating the function and application value of this paper’s simulation platform.更多还原