PMU-Based Detection of Voltage Imbalances with Tolerance Constraints

被引：21
作者：
Routtenberg, Tirza [1 ]
Concepcion, Ricky [2 ]
Tong, Lang [3 ]
机构：
[1] Ben Gurion Univ Negev, Dept Elect & Comp Engn, IL-84105 Beer Sheva, Israel
[2] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA
[3] Cornell Univ, Sch Elect & Comp Engn, Ithaca, NY 14853 USA
来源：
IEEE TRANSACTIONS ON POWER DELIVERY | 2017年 / 32卷 / 01期
基金：
美国国家科学基金会;
关键词：
Phasor measurement unit (PMU); microgrids; off-nominal frequencies; power system monitoring; unbalanced power system; symmetrical components; state estimation; generalized locally most powerful (GLMP) test; STATE ESTIMATION; UNBALANCED VOLTAGE; POWER; FREQUENCY; PERFORMANCE; TESTS;
D O I：
10.1109/TPWRD.2016.2591727
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The problem of voltage imbalance detection in a three-phase power system using phasor measurement unit (PMU) data is considered within a hypothesis testing framework. Ageneral model for the PMU output with a downsampled negative sequence is presented. The new formulation takes into account computation complexity and tolerance of imbalance. A new monitoring tool, referred to as a generalized locally most powerful (GLMP) test, is proposed for detection in the presence of nuisance parameters. A closed-form expression of the GLMP test is developed for the detection of an imbalance problem, based on a single PMU's measurements. Numerical simulations show improved performance over benchmark techniques.
引用
收藏
页码：484 / 494
页数：11
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