The power system state estimation involves network topology, network observability analysis, state estimation and detection and identification of bad data.

电力系统状态估计的内容包括：网络拓扑分析、网络可观测性分析、状态估计、状态估计潮流、不良数据检测和辨识等。

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After analysis of traditional methods, including residual and sudden change detection, some new theories are introduced for bad data detection and identification.

针对不良数据的检测和辨识，在简要分析传统量测量残差检测和突变检测方法优缺点的基础上，又介绍了一些新的理论。

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In this dissertation, the detection, identification and correction of the bad or wrong data in the power system were investigated thoroughly.

本文对电力系统中的不良和错误数据的检测辨识与修正进行了深入研究。

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