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Extended Kalman filter-based approach for Nodal pricing in active distribution networks
(IEEE, 2020-05-08)
- article
This article presents an analytical approach based on Extended Kalman Filter (EKF) for nodal pricing in distribution networks containing private distributed generation (DG). An appropriate nodal pricing policy can direct ...
Optimized Operation of Local Energy Community Providing Frequency Restoration Reserve
(Institute of Electrical and Electronics Engineers, 2020-09-29)
- article
In order to unlock the maximum flexibility potential of all levels in the power system, distribution-network-located flexible energy resources (FERs) should play an important role in providing system-wide ancillary services. ...
Decision tree analysis to identify harmful contingencies and estimate blackout indices for predicting system vulnerability
(Elsevier, 2020-01-01)
- article
Cascading failure is the main mechanism for progressing large blackouts in power systems. Following an initial event, it is challenging to predict whether there is a potential for starting cascading failure. In fact, the ...
Development of an EV powertrain on system level by utilizing simulation-based design platforms
(2020)
Diplomityö
Diplomityö
The challenges within electric powertrain design are managing multiple physics, time scales and spatial scales. There are existing methods available in different industries for modeling individual functional blocks of the ...
Minimizing wind power curtailment using a continuous-time risk-based model of generating units and bulk energy storage
(IEEE, 2020-06-23)
- article
Wind power curtailment (WPC) occurs because of the non-correlation between wind power generation (WPG) and load, and also due to the fast sub-hourly variations of WPG. Recently, advances in energy storage technologies ...
Utilization of a mixture of CTs and current sensors in line differential protection applications
(CIRED, 2019-06-03)
- conferenceObject
The popularity of Rogowski sensors is increasing due to their advantages over conventional CTs. Consequently, network utilities may sometimes end up facing a question whether it would be possible to use line differential ...
Alumiiniseoksisen reitityskomponentin lämpökäsittely
(2007)
Diplomityö
Diplomityö
Keskijänniteverkkoon kuuluu olennaisena osana reitityskomponentit, jotka valmistetaan alumiinista valamalla. Tarvittavien lujuusominaisuuksien saavuttamiseksi lähes kaikille komponenteille suoritetaan valun jälkeinen ...
Sensitivity analysis of frequency and voltage stability in islanded microgrid
(CIRED, 2007-05-21)
- conferenceObject
This paper studies the voltage and frequency stability of an islanded microgrid and the sensitivity of these quantities to certain changes in system configuration. In conventional power systems the system frequency ...
Voltage and current THD in microgrid with different DG unit and load configurations
(CIRED, 2008-06-23)
- conferenceObject
After microgrid transition from the normal operation to the islanded operation the system impedance changes considerably and it affects on the harmonic voltages of the microgrid. In this paper the voltage ...
Sähkömagneettisten häiriöiden huomioiminen suojareleen testausjärjestelmissä
(2008)
Diplomityö
Diplomityö
Numeerisen suojareleen testaus on tärkeä osa valmistusprosessia, koska tuotteen luotettavuus on erittäin tärkeää sen elinkaaren aikana. Mittausjärjestelmän vaatimukset ovat kasvaneet nykyaikaisen elektroniikan vaatimusten ...