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

页码：484 / 494

页数：11

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