The voltage on bus bars of the main switchboard of the ferry electrical power system during a sea voyage - Open Research Data - MOST Wiedzy

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The voltage on bus bars of the main switchboard of the ferry electrical power system during a sea voyage

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 a sea voyage.

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_voyage_the value of the mains voltage (380 or 220)_number of the set. The file named ferry_voyage_380_2.TXT contains measurement data that was recorded during the operation of the SG1 shaft generator after turning off the free-standing generator G1. Then, after 20 minutes, the SG1 generator is switched off and the free-standing generator G2 is on.

Ilustracja publikacji

The block diagram of the digital measuring system

Plik z danymi badawczymi

ferry_voyage.zip
400.8 MB, S3 ETag 748f0b7c6061e0dd47b301621a928650-1, pobrań: 60
Hash pliku liczony jest ze wzoru
hexmd5(md5(part1)+md5(part2)+...)-{parts_count} gdzie pojedyncza część pliku jest wielkości 512 MB

Przykładowy skrypt do wyliczenia:
https://github.com/antespi/s3md5
pobierz plik ferry_voyage.zip

Informacje szczegółowe o pliku

Licencja:
Creative Commons: by 4.0 otwiera się w nowej karcie
CC BY
Uznanie autorstwa
Dane surowe:
Dane zawarte w datasecie nie zostały w żaden sposób przetworzone.

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:
Identyfikator DOI 10.34808/r1td-b212 otwiera się w nowej karcie
Weryfikacja:
Politechnika Gdańska

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