Effect of Measurement Temperature on Transfer Function Zero Evaluated for Condition Assessment of Oil-Paper Insulation

被引：0

作者：

Saurabh ^{[1
]}

Banerjee, C. M. ^{[1
]}

Baral, A. ^{[1
]}

Chakravorti, S. ^{[2
]}

机构：

[1] Indian Sch Mines, Indian Inst Technol, Dept Elect Engn, Dhanbad 826004, Bihar, India

[2] Jadavpur Univ, Dept Elect Engn, Kolkata 700032, India

来源：

2017 3RD INTERNATIONAL CONFERENCE ON CONDITION ASSESSMENT TECHNIQUES IN ELECTRICAL SYSTEMS (CATCON) | 2017年

关键词：

Measurement temperature; Conventional Debye Model; zero; Transfer Function; polarization-depolarization current; oil-paper insulation; DIELECTRIC RESPONSE MEASUREMENTS; MODIFIED DEBYE MODEL; TRANSFORMERS; SYSTEM; PART;

D O I：

暂无

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：

Polarization Depolarization Current (PDC) measurement is widely used by utilities for condition assessment of oil-paper insulation. Conventional Debye Model (CDM) is an accepted technique used to analyze PDC data. Highest magnitude of Zero (Z(1)) of the Transfer Function obtained from the CDM model is reported to maintain a well-defined relation with moisture content (%pm) present in the paper. However, the influence of measurement temperature on the said relationship between Z(1) and %pm is yet to be investigated. It is known that %pm as well as the polarization current profile are influenced by measurement temperature. As PDC measurement is an offline technique, the measurement is performed post shut-down after the unit reaches thermal equilibrium with ambient. Hence, the result does not follow the system behavior when it is in operation. To estimate the condition of the system during operation, it is required to obtain the performance parameters at different temperatures other than the temperature at which the measurement is done. In the present work, multiple samples are prepared in the laboratory and PDC measurement is carried out at three different temperatures. In the present study influence of measurement temperature on the relation (between Zr and %pm) is investigated.

引用

页码：371 / 374

页数：4

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