Research On Optimization Of Operation And Control Strategy Of AC Micro - Grid

As a new micro-grid energy supply network and management structure, reduce energy consumption and environmental pollution at the same time, it is possible to improve the operational stability and flexibility of the system. Study on micro-grid energy management system will help improve the economy and reliability of the micro-grid operation, reduce CO2 emissions and improve energy efficiency. Different micro-network load demand in different regions, distributed power supply capacity required for each different; and in each case to determine the capacity of distributed power, reasonable distribution of each distributed power output of the micro network to the economy is the focus of current research. Therefore, this article from the micro network for research two areas: micro-network design and optimization of micro regulation, the establishment of different mathematical models to explore effective solutions.This paper analyzes the types and the basic structure of the micro-grid should be included in each DG, given the steady-state mathematical model of micro-power network in photovoltaic systems, wind energy systems, micro-turbine systems, diesel and battery system and battery life model for the later range of typical micro-grid energy regulation study laid a theoretical foundation.Secondly, we design the micro-grid system comprising economic, environmental and reliability optimization design model for regulatory policy model difficult to solve the characteristics of the improved simulated annealing particle swarm optimization, simulated annealing algorithm and particle swarm optimization and binding to improve, given the algorithm processes. After you select a region of Zhejiang analysis, simulation results show that the design method can effectively optimize the design of the micro-grid, micro-grid and individual components of scheduling allocated to improve energy efficiency and reduce the economic costs.For isolated operation micro-grid, micro-grid from the whole life cycle operating economy and starting battery life, the principle of integrated renewable energy use priority, while the integrated micro-grid operation principle, refer to the existing policy experts from the battery, the diesel engine starting work developed two different run-control strategy, and using the measured data of different regulatory strategy simulation results demonstrate the effectiveness of the algorithm.Parallel operation of large power grid and micro-grid to energy exchange, and network operation for the micro-grid, micro-grid operation considering economics and environmental aspects, it raised the cost of operation and maintenance costs and environmental converted two objective functions, according to the energy structure and a large grid of micro-grid distributed each unit exchange programs, we propose two different run-control strategy. Simulation analysis of micro-grid model under different strategies, simulation results verify the effectiveness of the policy again.