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The faults can happen to transmission lines at any time, any places and caused by different reasons. An accurate and fast solution to detect, locate and isolate the faults will improve the quality of the power systems' performance. The time domain reflectometry (TDR) method basing on the analysis of reflected waveforms on the transmission lines to detect the faults and estimate the fault resistance...
In future distribution grids with high penetration of distributed generators more stable solutions may appear because of active or reactive power reversal. The systems can operate at very different states, and additional control measures may be required to ensure that it remains at the appropriate point. Under typical scenarios such as subjected to disturbances or load shedding, the system may be...
With the strong development of renewable energy sources, the next generation network could include an existing AC system and multi-terminal VSC-HVDC links. In such an AC-DC network, interactions between AC and DC side under faults are interested to study. This paper presents a dedicated model of a sample AC-DC network and analyzes transient responses of this network following faults.
We propose a novel real-time pricing method for load frequency control in the grid when there is a lot of wind power. We adjust the electricity price for the owners of heat pump water heaters in addition to controlling batteries and thermal power plants at the same time. In our method, the uncertainty due to indirectly controlling electricity consumption through price presentation is compensated by...
In this paper, the dynamics of the half-bridge LLC resonant converter are investigated based on the small signal model and a piecewise PI regulation is studied and derived by simulation. Small-signal dynamics of the circuit under consideration contain many factors that may affect regulation accuracy and performance of digitally controlled regulators. The load factor is specifically addressed here...
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