This paper presents a robust state estimation (SE) based on weighted least absolute value (WLAV) criterion for power systems having both traditional remote terminal units (RTU) and synchronizing phasor measurement units (PMU). It is known that WLAV‐based SE performs poorly when bad data occurred in leverage measurements. To improve the robustness of WLAV‐based SE, a technique for converting actual measurements to pseudo‐voltage measurements is proposed in this paper. Using these pseudo‐voltage measurements, a measurement model containing no leveraging measurement point can be formulated. The SE problem is formulated as a constrained nonlinear optimization based on WLAV criterion and solved by using a primal‐dual interior point algorithm. Several IEEE test systems with mixed measurements have been used to demonstrate the robustness of the proposed method. The results indicate that the proposed method yields superior SE accuracy even under extremely bad data conditions. © 2020 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

中文翻译：

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基于伪电压测量的稳健WLAV状态估计

本文针对具有传统远程终端单元（RTU）和同步相量测量单元（PMU）的电力系统，提出了一种基于加权最小绝对值（WLAV）准则的鲁棒状态估计（SE）。众所周知，当杠杆测量中出现不良数据时，基于WLAV的SE的性能就会很差。为了提高基于WLAV的SE的鲁棒性，本文提出了一种将实际测量转换为伪电压测量的技术。使用这些伪电压测量，可以制定不包含杠杆测量点的测量模型。SE问题被公式化为基于WLAV准则的约束非线性优化，并使用原始对偶内点算法解决。已使用几种具有混合测量的IEEE测试系统来证明所提出方法的鲁棒性。结果表明，即使在极端恶劣的数据条件下，所提出的方法也能提供出色的SE精度。©2020日本电气工程师学会。由John Wiley＆Sons，Inc.发布