Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Shunt capacitor placement under n-1 contingency condition: Realization with Mi Power package

Venkateswararao Bathina, Devarapalli Ramesh, Knypiński Łukasz, Rao R Gowri Sankara, Márquez Fausto Pedro García

Przegląd Elektrotechniczny

2023

R. 99, nr 3

164--171

The losses in the power transmission network may increase due to contingency conditions, i.e., contingency analysis is flattering a crucial task for power system scheduling and operation. It is required to forecast the outcome of outages in power system. Contingency may be occurred due to failure of equipment or transmission lines. Single line outage also overloads the other lines, and abrupt voltage drop may cause the outage of other lines. Hence, the contingency analysis plays vital role to handle different system operating conditions. In this paper, n-1 contingency condition is considered to find the impact of shunt capacitor for improvement in voltage profile, where Mi Power package has been used for the conduction of simulation on the considered test network. Voltage Collapse Prediction Index is the method used for finding the optimal placement of shunt capacitor under n-1 contingency. The highest VCPI value indicates the weak bus, therefore, that is the best place for placement of shunt capacitor to improve the voltage profile and reduce the losses. The value of bus voltages, real power losses and real power generation before and after the n-1 transmission line contingency have been examined, where the improvement of voltage profile through optimal location of shunt capacitor has been studied. The usefulness of the shunt capacitor has been verified on 5 bus test system under n-1 contingency condition using MiPower software.

W artykule przestawiono problematykę łagodzenia skutków stanów awaryjnych w systemach przesyłu energii elektrycznej. W przypadku stanów awaryjnych w systemach przesyłowych występują przeciążenia oraz straty mocy w innych częściach systemu. Dlatego bardzo ważna jest analiza awarii które mogą wystąpić podczas eksploatacji systemu przesyłu energii. Często osoby zarządzające systemem przeprowadzają prognozę skutków wyłączenia poszczególnych linii przesyłowych tworzących system przesyłowy. Stan awaryjny w jednej linii wywołuje spadki napięć w innych punktach systemu przesyłowego. W celu łagodzenia skutków awarii, autorzy zaproponowali zastosowanie kondensatora bocznikującego. W celu wyznaczenia najlepszego miejsca podłączenia kondensatora bocznikującego analizowano wskaźnik zapadów napięcia. Obliczenia symulacyjne zostały wykonane w systemie MiPower. Analizowano system złożony z pięciu linii przesyłowych. Przedstawiono i omówiono wybrane wyniki obliczeń symulacyjnych.

Use of UIOT for offshore surveys through autonomous vehicles

Sanchez Pedro Jose Bernalte, Márquez Fausto Pedro García, Govindara Shashank, But Alexandru, Sportich Benjamin, Marini Simone, Jantara Valter Junior, Papaelias Mayorkinos

Polish Maritime Research

2021

nr 3

175--189

The ENDURUNS project is a European Research project of the Horizon 2020 framework, which has as its main objective to achieve the optimum and intelligent use of green hydrogen energy for long-term ocean surveys. The ENDURUNS system comprises an Unmanned Surface Vehicle (USV) and an Autonomous Underwater Vehicle (AUV) with gliding capability. The power pack of the USV integrates Li-ion batteries with photovoltaic panels, whilst the AUV employs Li-ion batteries and a hydrogen fuel cell. It is essential to develop a continuous monitoring ca-pability for the different systems of the vehicles. Data transmission between the devices onboard presents challenges due to the volume and structure of the different datasets. A telecommunications network has been designed to manage the operational components considered in the project. The autonomous vehicles perform measurements, providing their position and other data wirelessly. The system will generate a great volume of various signals during the survey. The Remote Control Centre needs to be interfaced with the vehicles in order to receive, manage and store the acquired data. An Underwater Internet of Things (IoT) platform is designed to establish efficient and smart data management. This study presents an exhaustive survey to analyse the telecommunication systems employed in the autonomous vehicles, including the back-end, user interface and mobile units. This paper presents the novel design of the hardware and software structure of the ENDURUNS project with regard to the literature, where its components and their in-terconnection layers are detailed, which is a novel scientific and technological approach for autonomous seabed surveying in deep oceans or in coastal areas.