Analysis on Steady-State Electromagnetic Characteristics and Online Monitoring Method of Stator Inter-Turn Short Circuit of Turbo-Generator
| Autor: | Meng-Qiang Ke, Yu-Ling He, Gui-Ji Tang, Fa-Lin Wang |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Engineering
Turbo generator Steady state (electronics) business.industry Stator 020209 energy Mechanical Engineering 020208 electrical & electronic engineering Electrical engineering Energy Engineering and Power Technology 02 engineering and technology law.invention Inductance Generator (circuit theory) law Harmonics 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Current (fluid) business Short circuit |
| Zdroj: | Electric Power Components and Systems. 45:198-210 |
| ISSN: | 1532-5016 1532-5008 |
| DOI: | 10.1080/15325008.2016.1247387 |
| Popis: | The intent of this paper is to find out significant united electromechanical characteristics for online monitoring of stator interturn short circuit (SISC) faults. Different from other studies, this paper pays attention to neither the stator voltage and current, nor the winding inductance variation, but focuses on the faulty electromagnetic characteristics including the exciting current, the circulating current in the parallel branches (CCPB), and the electromagnetic torque (EMT). The simulation work is modeled for a QFSN-600-2YHG type turbo-generator and the experiment is taken on a MJF-30-6 fault-simulating generator to verify the theoretical analysis. The simulation result and the experiment data accord with the theoretical analysis and show that, as SISC occurs, second harmonics will be induced in the exciting current, first and third harmonics will be induced in the CCPB, and second and fourth harmonics will be produced in the EMT. Moreover, the corresponding time-domain waves will also fluct... |
| Databáze: | OpenAIRE |
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