Implementação e testes de campo de um ESP digital
This work presents the development and implementation as well as the results of field tests of a power system stabilizer (PSS) designed with digital control method for damping electromechanical modes of oscillation observed for signs of electrical power measured in a generating unit of 350 MVA of...
| Autor principal: | GOMES, Marcus Ciro Martins |
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| Grau: | Dissertação |
| Idioma: | por |
| Publicado em: |
Universidade Federal do Pará
2012
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.ufpa.br/jspui/handle/2011/2630 |
| Resumo: |
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This work presents the development and implementation as well as the results of field
tests of a power system stabilizer (PSS) designed with digital control method for damping
electromechanical modes of oscillation observed for signs of electrical power measured in a
generating unit of 350 MVA of Tucuruí power plant.
It is presented and applied the methodology of identifying linear parametric models
such as auto regressive with exogenous inputs (ARX) for estimation of models with the
ability to capture the relevant information (natural frequency and damping) of dominant
electromechanical modes of the system. In possession of ARX parametric model is done then
the synthesis of digital damper control law for the ESP, using the technique of pole
displacement of the closed loop transfer function. For the synthesis of digital control law, we
used a canonical structure type RST. For the field tests, the control law digital ESP buffer was
coded in C language and embedded in a hardware prototype of which is based on model
DSPIC 30F3014 microcontroller, which incorporates a large number of peripherals for data
acquisition and communication.
In order to evaluate the performance of the digital PSS developed, experimental tests
were performed in a generating unit of 350 MVA power house number 1 from Tucuruí power
plant. The stabilizer acts carried out by adjusting the reference voltage regulator automatic
voltage of the respective generating unit in accordance with the oscillations observed by
measuring the electrical power generator stator. The results of field tests showed an excellent
performance of ESP digital damping of electromechanical mode of natural frequency of
approximately 1.7 Hz, observed in the field trial. |