Strategic Use of Synchronized Phasor Measurements to Improve Network Parameter Error Detection
Strategic Use of Synchronized Phasor Measurements to Improve Network Parameter Error Detection
复制标题
战略性地使用同步相量测量来改进网络参数错误检测
DOI：
10.1109/tsg.2017.2686095
复制
发表时间：
2018
影响因子：
9.6
通讯作者：
A. Abur
中科院分区：
文献类型：
--
作者：
Yuzhang Lin;A. Abur
标准化拉格朗日乘数（NLM）测试通常对网络参数错误识别有效，但即使存在重大参数错误，偶尔也会出现检测失败。本文利用同步相量测量来解决这个问题。识别可能未检测到错误的参数，并定义一个指数来量化不同参数的NLM测试的功率。另外的指标，以衡量不同的参数误差对状态估计解的影响也来自。最后，使用相量测量单元（PMU），以避免参数错误检测故障的策略，制定了一个优化问题，使用这些派生的指标。仿真结果说明了PMU的战略使用所带来的好处，并验证了所提出的问题制定和解决方案。
The Normalized Lagrange Multiplier (NLM) test is generally effective for network parameter error identification, but suffers occasional detection failures even in the presence of substantial parameter errors. This paper exploits synchronized phasor measurements to address this issue. The parameters whose errors may go undetected are identified, and an index is defined to quantify the power of the NLM test for different parameters. Additional indices to gauge the impact of different parameter errors on the state estimation solution are also derived. Finally, a strategy for using phasor measurement units (PMUs) to avoid parameter error detection failures is presented by formulating an optimization problem using these derived indices. Simulation results are provided to illustrate the benefits brought by the strategic use of PMUs, and to validate the proposed problem formulation and solution.