Distributed Energy And Independent Micro-grid Capacity Allocation And Operation Optimization Research

The purpose of this study is in the thorough analysis of all kinds of distributed energy generation rule, on the basis of building is given priority to with diesel generator power supply of the unit in the micro grid load distribution optimization solution, and to give priority to with diesel generating sets of power supply network of independent micro network scheme are studied, through to all kinds of micro sources of coordinated control and optimization scheduling, in order to realize the network economy and the protection of environment.Firstly, in this paper, the structure of micro power grid and power generation principle, carried on the thorough analysis, especially for diesel generator fuel consumption, output power, multivariate function relation between the pollution index is studied.And based on a certain island of photovoltaic power generation, wind power and other auxiliary source of real system parameters are analyzed and categorized, on the basis of their respective precise mathematical model is established, and their respective independent grid power simulation model.Then, in this paper, the diesel generator is given priority to the power of independent between piconets in unit load distribution method is studied.Unit load distribution between the optimization goal is to make the system can satisfy the constraint conditions, under the condition of reasonable between each unit load distribution, so as to reduce fuel consumption and save cost.In this paper, we first use the micro rate, such as improvement of optimal quadratic form as well as other related mathematical methods, to convert the problem into optimization problem, this paper derived the necessary conditions of fuel consumption optimal control and basic principles.At the end of the paper, according to the actual situation of a certain island by using the MATLAB optimization toolbox active load optimal distribution study.Then, based on a certain island independent micro power grid as the research object, according to the local load and the relevant data such as sunlight, wind speed, using Homer tool software, focusing on the solar energy, wind energy, diesel generating sets of battery and network of independent micro modeling, simulation scheme and the economic operation, and finally from the result of optimization in choosing the most economic micro mesh network scheme, the results show that the method is feasible and has practical application value.Finally, according to a certain island real micro power grid topology, comprehensive of the above content, combined with the technical features of the micro power grid dynamic load, and the micro grid multivariate micro source integration of complex system modeling, set up independent micro between micro source dynamic load simulation system has good robustness, amplitude changes in the power grid, the grid micro source cut, cut out, cut out such cases, the reaction is rapid, can guarantee the better stability.