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首页> 外文会议>2019 International Conference on Smart Grid Synchronized Measurements and Analytics >Static and Dynamic Calibration of Phasor Measurement Units
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Static and Dynamic Calibration of Phasor Measurement Units

机译：相量测量单元的静态和动态校准

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摘要

The testing and calibration of phasor measurement units (PMUs) are key points for whether they will be effective in the power system. Therefore, providing valid test reference values with enough precision under both steady-state and dynamic conditions plays a crucial role. In this paper, based on the description of a PMU testing system including a PMU calibrator, general signal models for PMU static and dynamic tests are outlined. A phasor measurement algorithm suitable for the PMU calibrator based on a non-linear fitting method is proposed. In addition, the setting methods of the initial points and bound constraints of the parameters to be fitted are proposed to ensure the solution uniqueness of the non-linear fitting method. The effect of hardware system random uncertainty on measurement accuracy is analyzed, and the corresponding solutions are proposed to improve measurement accuracy. Then, high performance hardware is selected to build a PMU calibrator. To verify the measurement accuracy of the built PMU calibrator, experimental tests under static and dynamic conditions are carried out. The results show that the accuracy of the PMU calibrator can meet the calibration requirements and the built PMU calibrator can be used to test PMU in the laboratory.
机译：相量测量单元（PMU）的测试和校准是它们在电力系统中是否有效的关键。因此，在稳态和动态条件下以足够的精度提供有效的测试参考值至关重要。在本文中，基于对包含PMU校准器的PMU测试系统的描述，概述了用于PMU静态和动态测试的通用信号模型。提出了一种基于非线性拟合方法的PMU校准器相量测量算法。此外，提出了初始点的设置方法和拟拟合参数的约束条件，以确保非线性拟合方法的唯一性。分析了硬件系统随机不确定性对测量精度的影响，并提出了相应的解决方案以提高测量精度。然后，选择高性能硬件来构建PMU校准器。为了验证内置PMU校准器的测量精度，在静态和动态条件下进行了实验测试。结果表明，PMU校准器的精度可以满足校准要求，内置的PMU校准器可用于实验室PMU的测试。

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