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The faults in a microgrid (MG) pose many challenges for operation of the system. They may lead to an increase in the operation cost. In this paper, in order to solve the problem, a novel algorithm based on the auto-configuration of MGs is proposed for minimizing the operation cost in grid-connected mode. A centralized energy management system (EMS) is also developed in accordance with the proposed...
The installed capacity of photovoltaic (PV) generation in Japan is currently more than 20 GW. This capacity has been rapidly increasing since the start of the feed-in tariff policy in 2012. The installed capacity after 2030 may be considerably larger than the current supposition if this trend continues. In this study, we conducted numerical simulations of the demand and supply operation with consideration...
Nowadays, wind energy has become a very viable alternative solution to provide electrical energy. The development of wind energy is especially relevant for the case of isolated island in the south central provinces of Vietnam, where there is great potential for wind energy. For these isolated systems, the co-generation of diesel generators and wind turbines is a common configuration, but also poses...
This paper presents a mathematical model for the energy bidding problem of a virtual power plant (VPP) that participates in the regular electricity market and intraday demand response exchange (DRX) market considering different system uncertainties due to the intermittent renewable energy sources, retail customers' demand and electricity prices. By participating in the DRX market, the VPP can purchase...
In this paper, a novel algorithm is proposed for optimal operation of microgrids considering the occurrence of faults or recovery from faults, auto-configuration. The objective of the proposed algorithm is to minimize the operation of the microgrid while ensuring stability. The auto-configuration is defined as the capability of the system to update the status of all components and reschedule healthy...
This paper proposes a new method to determine the placement and sizing of diesel generators (DGs), photovoltaic solar panels (PV) and batteries for off-grid systems. In this work, our objective is to reduce the total system cost while fulfilling the load demand and mantaining the grid power quality, among other constraints. This is achieved by employing two particle swarm optimization (PSO) algorithms,...
This paper proposes an approach for examining the small-signal stability of transmission power grids in presence of a power line removal. Employing this approach, we derive an algebraic certificate for directly checking the existence of a new stable equilibrium point after the outage of a power line. This criterion is obtained based on the power network structure and power flow parameters without...
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.
The future of high renewable energy penetration and the consequent power variability produces the need for fast power-flow computations for the useful management of power. Such management must have least requirement for human intervention, achievable through fast and reliable automations. This paper presents Geographic Information System (GIS) integrated automation of a non-iterative power-flow method...
As the battery technologies offer desirable characteristics at competitive cost, their applications have broadened significantly within the last decade covering all areas of power systems: from generation to transmission and distribution levels. In addition, battery storage technologies offer solutions to a range of network problems which are weak, long and thin, have large load variations, and have...
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...
Power systems are experiencing a historical transformation in their paradigm and architecture. As such, the classical methods ensuring secure operation of power grids, which are largely developed several decades ago, need to be reassessed. At the same time, new generations of smart electronic devices provide fast actuation to smart power grids. Also, transmission resources are continuously installed...
Traditionally, ancillary market is supported by a lot of conventional generators to produce or use reactive power with the purpose enhance voltage stability. However, in recently years, with the penetration of new wind generations (Double Fed Induction Generator (DFIG) and Direct Drive Synchronous Generator (DDSG)) and through different set of control possibility, wind power plants are able to partly...
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