基于多智能体的微电网系统优化经济运行研究

摘要

Microgrids system, compatible with a variety of distributed generations, can realize self control, self protec- tion and self management, provide power supply with high security, reliability and flexibility, and achieve high eco- nomic benefits if integrated with cost-effective and energy-efficient power generating units; however, these economic benefits of Microgrids have not been fully acknowledged. Multi-agent technology is of great value and significance to the research of optimal economic operation of microgrids. This paper begins with the introduction of the fundamental principl＆ of Multi-agent, followed by putting forward an optimal economic operation framework of microgrids, which consists of microgrid agent, distributed generation agent, external distribution network agent, end user agent and dis- patching center agent. The economic benefits of microgrids are respectively analyzed from the aspects of electricity purchase and sale trade, peak load regulation service and network loss reduction, and the operation model is estab- lished. By means of citing the specific microgrid illustrative example, the benefits of the optimal economic operation of this example is worked out, and the validity and effectiveness of the optimal economic operation model of microgrids based on multi-agent is fully demonstrated.%微电网兼容各种分布式电源，能够实现自我控制、保护和管理，提供安全、可靠、灵活的电力供应，通过整合经济高效的发电机组实现较好的经济效益。但微电网经济效益一直没有得到充分认识，多智能体（Multi．Agent）技术对于微电网的优化经济运行研究具有重要价值。首先介绍了Multi．Agent的基本原理，提出了基于由微电网Agent，分布式电源Agent，外部配电网Agent，终端用户Agent以及调度中心Agent等组成的Multi．Agent的微电网优化经济运行框架，从购售电交易、调峰服务、降低线损等3个方面分析了微电网的经济效益，并建立了微电网系统优化经济运行模型。选取具体的微电网设计案例，求解出该算例的优化经济运行效益，证实了基于Multi-Agent的微电网系统优化经济运行模型的正确性和有效性。