The voltage on bus bars of the main switchboard of the ferry electrical power system during maneuvering

Opis

The dataset is part of the research results on the quality of supply voltage on bus bars of the main switchboard of the ship's electrical power system in different states of ship exploitation. The attached dataset contains the measurement results carried out onboard the ferry during maneuvering.

The ferry is equipped in a three-phase, three-wire electrical power system. The source of electricity is three-phase synchronous generators driven by auxiliary diesel engines. Additionally, shaft generators driven by the propeller shaft of the main engine are used. The ship's electrical power plant consists of three free-standing generators of 1400 kVA each, and two shaft generators 1375 kVA each. The nominal voltage on bus bars of the main switchboard was 380 V with a frequency equal to 50 Hz. The free-standing generators have been the main energy source. The parallel operation of each shaft generator with the free-standing generators is possible, especially during a sea voyage with a calm wave surface. Additionally, each of the bow thrusters has been supplied of single shaft generators, the most frequently, in configuration separated from the main electrical power system. The voltage of 220V has been obtained using a transformer.

The voltage waveforms on bus bars of the main switchboard were recorder with the digital measuring system, which allows the simultaneous measurement of three phase-to-phase or two-phase voltages. The initial conditioning of the input signals is carried out by optoisolation amplifiers and a low-pass filter module (antialiasing). The formation of the output digital signal from the analog signal takes place in the a/d converter with a resolution of 16 bits and a sampling rate of up to 20 kS/s. Using three channels at the same time allows the maximum sampling rate of 6.6 kS/s. The block diagram of the digital measuring system is shown in Figure.

The files contain voltage waveforms of the output of a/d converters in [V], in three phases for 400 V and 220V networks. The attenuation and offset of the measuring path for the 220 V network are 77.6398 [V/V] and -0.017 V, respectively. For the 380 V network, the attenuation and offset of the measuring path are equal to 134.0123 [V / V] and -0.0175 V, respectively. The sampling frequency is inserted in the first row of the attached files.

The files are described as follows:

ferry_maneuvering_the value of the mains voltage (380 or 220)_in_K (entrance to the Karlskrona port)

ferry_maneuvering_the value of the mains voltage (380 or 220)_in_G (entrance to the Gdynia port)

ferry_maneuvering_the value of the mains voltage (380 or 220)_out_K (departure from the Karlskrona port)

ferry_maneuvering_the value of the mains voltage (380 or 220)_out_G (departure from the Gdynia port)

The block diagram of the digital measuring system

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ferry_maneuvering.zip

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Informacje szczegółowe

Rok publikacji:

2020

Data zatwierdzenia:

2020-12-17

Data wytworzenia:

1999

Język danych badawczych:

angielski

Dyscypliny:

Automatyka, elektronika i elektrotechnika (Dziedzina nauk inżynieryjno-technicznych)

DOI:

10.34808/t5rg-cp75

Weryfikacja:

Politechnika Gdańska

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Autorzy

Beata Pałczyńska dr inż.
Katedra Metrologii i Systemów Informacyjnych
numer orcid 0000-0002-2404-6500otwiera się w nowej karcie
Twórca
Tomasz Tarasiuk

Uniwersytet Morski w Gdyni
numer orcid 0000-0001-7042-1503otwiera się w nowej karcie
Twórca

wyświetlono 111 razy

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