Essays about: "reaktiv kompensering"
Found 5 essays containing the words reaktiv kompensering.
-
1. Voltage Stability and Reactive Power - Introduction of Intermittent Renewable Energy Sources in a Power System
University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)Abstract : The electricity demand increases rapidly, and in order to mitigate climate change the power production needs to be renewable and free from green house gas emissions. When solar and wind power are introduced in the system, voltage instability might become a problem. READ MORE
-
2. Power Electronic Enhanced Distribution Transformer : Seamless Voltage Regulation with Extended Functionalities
University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)Abstract : On-load tap changers and static synchronous compensators (STATCOM) are the main components for voltage regulation and power quality optimization in the power system. STATCOMs are used in both industrial applications and utility to stabilize the grid and reduce downtime. READ MORE
-
3. Pre-study of optical LED units for shunting signals
University essay from KTH/Hälsoinformatik och logistikAbstract : Alstom wanted to investigate the possibility of adapting its light emitting diode (LED) technology for shunting signals in train traffic. The LED technology uses 50V, but Alstom wants to adapt it for 12V. The LED technology is energy efficient but needs to be adapted for existing signal interlocking by drawing a higher current. READ MORE
-
4. Compensating the Changing Reactive Power in the Medium-Voltage Grid in Stockholm
University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)Abstract : A decline in inductive reactive power has been noted by several DNOs around Europe for the last decade. Why this is happening is unknown. One of the DNOs is the Swedish DNO Ellevio AB that has seen large decreases in demand of inductive reactive power from their primary substations. READ MORE
-
5. An MMC-based topology with Dual-Active-Bridge power channels for load balancing in 50 Hz-railway applications
University essay from KTH/Skolan för elektro- och systemteknik (EES)Abstract : The purpose of this thesis report is to investigate challenges related to railway electrification. Inac-railway systems, trains are most often single-phase loads, which can create significantunbalances in the grid, when fed directly from two adjacent phases. READ MORE