Sustainable management of water resources and a safe supply of drinking water will play a key role for the development of the human prosperity in the following *** paper presents an optimal control approach for the ma...
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Sustainable management of water resources and a safe supply of drinking water will play a key role for the development of the human prosperity in the following *** paper presents an optimal control approach for the management of the total water resources in a fast developing region under a critical water shortage.A model of the water allocation system is developed which considers both surface and groundwater resources and the distribution *** spatially distributed groundwater model is considered as a reduced model of the complex 3D Finite Element *** the optimization problem,which is formulated as large scale structured non-linear programming problem,can be solved in an appropriate computation *** performance of the proposed concept is demonstrated by close to reality optimization scenarios.
This paper analyses a flexibility market based approach to prevent grid congestions and reduce costs for feedin management. A method and implementation are presented to simulate this local flexibility market for the d...
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This paper analyses a flexibility market based approach to prevent grid congestions and reduce costs for feedin management. A method and implementation are presented to simulate this local flexibility market for the district Brunsbüttel in Northern Germany. The analysed approach introduces a regional auction to trade energy in a way that day-ahead forecasted congestions are minimised by coordinating the flexibility potential of the area. To quantify the potential of the mechanism a cosimulation was set up, using the OpSim co-simulation framework. The results show that the mechanism solves 100% of congestions at the cost of 74% of conventional feed-in management. Local flexibility assets, excluding curtailed wind farms, manage to prevent 16% of congestions. The concept seems particularly attractive for large combined heat and power plants. Additional 91 MW flexibility would be required in order to completely avoid curtailment, corresponding to a ratio of 0.7 MW flexibility per megawatt installed wind capacity.
Schedule deviations have become a major issue in Germany's power system in recent years. This paper introduces a fast local intraday market design to address this problem. It shows the concept of a market clearing...
ISBN:
(数字)9781728169194
ISBN:
(纸本)9781728169200
Schedule deviations have become a major issue in Germany's power system in recent years. This paper introduces a fast local intraday market design to address this problem. It shows the concept of a market clearing process for the 15- minute frame between the closing time of the intraday market and the time of delivery. This fast local intraday market shall reduce the schedule deviation of renewable energies and increase system stability. It also introduces a concept of considering grid limitations in the market process. Hence the grid sensitivities of the trading partners on the power grid are considered in the matching process. Therefore, a co-simulation which includes renewable energy providers, the system operator, the market component and flexibility providers is implemented. The results of the simulation show the predicted deviations in a 2025 scenario, the potential for flexibility, the reduction of the deviations and the expected costs.
In this paper we present our work and results in the framework of obstacle avoiding for marine vehicle teams by means of trajectory planning. Based on a team of maritime systems, such as Autonomous Underwater Vehicles...
In this paper we present our work and results in the framework of obstacle avoiding for marine vehicle teams by means of trajectory planning. Based on a team of maritime systems, such as Autonomous Underwater Vehicles (AUVs) or Autonomous Surface Vehicles (ASVs), which are intended to perform a preplanned mission in a given formation topology, methods for trajectory planning are investigated which guarantee for both obstacle-free paths and formation preservation. The proposed solution contains advanced graph search and trajectory smoothing to generate executable path for the vehicles.
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