用电力系统状态估计方法检测PMU测量中的系统误差

2015 56th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2015-12-03 DOI:10.1109/RTUCON.2015.7343131

I. Kolosok, E. Korkina, A. Mahņitko

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引用次数: 8

摘要

状态估计是确定电力系统当前状态的过程。为此，PMU同步相量测量与SCADA测量结合使用。一种测试方程(TE)方法被用于检测SCADA和PMU测量中的粗误差。TE差异的数学期望用于识别测量中的系统误差。该期望的非零值只能证明在TE中包含的测量中存在系统误差，但不能用于检测它。然后，确定TE相对于每次测量中的误差的“灵敏度”系数。如果无法检测到测量误差，则测量失真的值由状态估计过程确定。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Detection of systematic errors in PMU measurements by the power system state estimation methods

The state estimation is a procedure which determines the current state of a power system. For this purpose synchronized phasor measurements from PMU are used in combination with SCADA measurements. A method of test equations (TE) is used to detect gross errors in both SCADA and PMU measurements. The mathematical expectation of the TE discrepancy is used to identify a systematic error in measurements. The non-zero value of this expectation can only testify to the presence of a systematic error in measurements contained in TE, but cannot be used to detect it. Then, a "sensitivity" coefficient of the TE with respect to the error in each measurement is determined. If the measurement error cannot be detected, the value of the measurement distortion is determined by the state estimation procedure.

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2015 56th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)

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