基于多代理系统的微电网能量优化策略研究

发布时间：2018-03-15 03:18

本文选题：微电网　切入点：能量优化管理　出处：《燕山大学》2014年硕士论文　论文类型：学位论文

【摘要】：近年来能源和环境问题不断恶化，致使分布式发电技术备受关注。分布式发电在综合效率、能源多样化、环保、节能、资源节约、供电可靠性等方面都具有显著的优越性。然而，分布式发电大规模并网运行容易引发安全稳定和能源管理等一系列系统性问题。为了有效解决分布式电源大规模并网状态下所引发的诸多问题，充分发挥其潜能，，在分布式发电技术领域产生了微电网的概念。微电网(Microgrid, MG)是由分布式电源、储能装置、能量变换装置、相关负荷、监控装置和保护装置汇集而成的小型发配电系统。微电网既可以作为单一可控单元与大电网友好并网，也能够从主网脱离出来成为可控自治系统。无论哪种工作模式，微电网都需作为可定制电源为所辖重要负荷提供可靠的多种能源形式供应。由于微电网中微电源行为特性和供电形式多样，致使其能源管理问题非常复杂。本文从微电网的经济效益和环境效益角度出发，分别建立能量优化的目标函数，并在考虑微电源特性以及传输线路的约束的情况下，用多目标处理方法将目标函数转换为单目标函数进行求解；考虑微电网的市场环境，引入电力市场下微电网与大电网之间的实时电力交易，针对微电网在电力市场的交易竞价，建立了一种多代理系统控制下的优化模型；讨论了一种博弈竞价的方法及其在电力市场中的应用，并将优化电价运用到微电网能量优化的模型中；最后用一种改进的粒子群算法迭代出最优结果，并用算例的仿真检验优化结果的正确性。
[Abstract]:In recent years, energy and environmental problems have been worsening, which has caused much attention to distributed power generation technology. Distributed power generation in comprehensive efficiency, energy diversification, environmental protection, energy conservation, resource conservation, Power supply reliability and other aspects have significant advantages. However, In order to solve the problems caused by large-scale grid connection of distributed generation, it is easy to cause a series of systemic problems, such as security and stability, energy management, etc. In order to effectively solve many problems caused by large-scale grid connection of distributed power supply, the potential of distributed power generation can be brought into full play. The concept of microgrid is developed in the field of distributed generation technology. Microgrid (MG) is composed of distributed generation, energy storage device, energy conversion device, related load. A small power generation and distribution system composed of monitoring and protection devices. Microgrid can be used as a single controllable unit and a large power grid to be connected to the grid, or can be separated from the main network into a controllable autonomous system. Microgrid should be used as a customizable power source to provide reliable energy supply for important loads under its jurisdiction. Due to the diversity of behavior characteristics and power supply forms of micro-power supply in micro-grid, the energy management problem is very complex. From the point of view of economic and environmental benefits of microgrid, the objective function of energy optimization is established, and the characteristics of micro-power supply and the constraints of transmission line are considered. The multi-objective processing method is used to solve the problem by converting the objective function into a single-objective function, considering the market environment of microgrid, introducing the real-time electricity transaction between microgrid and large power grid under the power market, and aiming at the transaction bidding of micro-grid in the power market. An optimization model under the control of multi-agent system is established, and a game bidding method and its application in power market are discussed, and the optimized electricity price is applied to the model of micro-grid energy optimization. Finally, an improved particle swarm optimization algorithm is used to iterate out the optimal results, and an example is used to verify the correctness of the optimal results.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM727

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