Compensation of nonlinearities in a current transformer for the reconstruction of the primary current

被引：27

作者：

Bittanti, S ^{[1
]}

Cuzzola, FA

Lorito, F

Poncia, G

机构：

[1] Politecn Milan, Dipartimento Elettr & Informat, I-20133 Milan, Italy

[2] Swiss Fed Inst Technol, Automat Control Lab, CH-8092 Zurich, Switzerland

[3] United Technol Res Ctr, Dept Syst, E Hartford, CT 06108 USA

[4] United Technol Res Ctr, Dept Syst, I-20099 Sesto S Giovanni, Italy

[5] ABB Ric SPA, I-20099 Sesto S Giovanni, Italy

来源：

IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY | 2001年 / 9卷 / 04期

关键词：

current transformers; linear matrix inequalities; linear parameter varying techniques; nonlinear filtering; separable least squares;

D O I：

10.1109/87.930967

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The measurement of the current in industrial electrical devices is often carried out by current transformers, The reliability of these devices is compromised when the measured current is higher than the nominal value, due to the saturation and hysteresis effects of the magnetic core. In this paper, a nonlinear model of the current transformer is identified by means of a separable least squares technique. This model is successfully employed for the estimation of the primary current starting from experimental measurements of the distorted secondary current. In this way, a fair estimate of the primary current is obtained even when its maximum intensity reaches up to 60 times (or more) its nominal value. Sonic sensible experimental trials are reported in order to demonstrate the effectiveness of the technique developed.

引用

页码：565 / 573

页数：9

共 24 条

[11] THEORY OF FERROMAGNETIC HYSTERESIS [J].

JILES, DC ;

ATHERTON, DL .

JOURNAL OF APPLIED PHYSICS, 1984, 55 (06) :2115-2120

[12] NUMERICAL DETERMINATION OF HYSTERESIS PARAMETERS FOR THE MODELING OF MAGNETIC-PROPERTIES USING THE THEORY OF FERROMAGNETIC HYSTERESIS [J].

JILES, DC ;

THOELKE, JB ;

DEVINE, MK .

IEEE TRANSACTIONS ON MAGNETICS, 1992, 28 (01) :27-35

[13] Development and hardware implementation of a compensating algorithm for the secondary current of current transformers [J].

Kang, YC ;

Kang, SH ;

Park, JK ;

Johns, AT ;

Aggarwal, RK .

IEE PROCEEDINGS-ELECTRIC POWER APPLICATIONS, 1996, 143 (01) :41-49

[14] An algorithm for compensating secondary currents of current transformers [J].

Kang, YC ;

Park, JK ;

Kang, SH ;

Johns, AT ;

Aggarwal, RK .

IEEE TRANSACTIONS ON POWER DELIVERY, 1997, 12 (01) :116-124

[15] A NEW MODEL FOR TRANSFORMER SATURATION CHARACTERISTICS BY INCLUDING HYSTERESIS LOOPS [J].

LIN, CE ;

WEI, JB ;

HUANG, CL ;

HUANG, CJ .

IEEE TRANSACTIONS ON MAGNETICS, 1989, 25 (03) :2706-2712

[16] Identification of a grey-box model of nonlinear current transformers for simulation purposes [J].

Lorito, F .

CONTROL ENGINEERING PRACTICE, 1998, 6 (11) :1331-1339

[17] IMPROVED SIMULATION-MODELS FOR CURRENT AND VOLTAGE TRANSFORMERS IN RELAY STUDIES [J].

LUCAS, JR ;

MCLAREN, PG ;

KEERTHIPALA, WWL ;

JAYASINGHE, RP .

IEEE TRANSACTIONS ON POWER DELIVERY, 1992, 7 (01) :152-159

[18]

MARTIN CM, 1997, CONSULTANT PHARM, V12, P631

[19] A HIGH-FREQUENCY TRANSFORMER MODEL FOR THE EMTP [J].

MORCHED, A ;

MARTI, L ;

OTTEVANGERS, J .

IEEE TRANSACTIONS ON POWER DELIVERY, 1993, 8 (03) :1615-1626

[20] GAIN SCHEDULING VIA LINEAR FRACTIONAL TRANSFORMATIONS [J].

PACKARD, A .

SYSTEMS & CONTROL LETTERS, 1994, 22 (02) :79-92

← 1 2 3 →