微电网的多级多目标大系统递阶控制研究

How to improve the efficiency of solar power generation, reduce investment and operating costs, establish a reliable and stable microgrid is currently the focus of the world. According t this research topic, this project established the multi-level and multi-objective optimization model of cooling, heating and power generation system which is based on the solar thermal power generation and include the photovoltaic power generation, gas turbine power generation and storage part. First of all, using the hierarchical theory of large system established the optimization model of each subsystem associated with microgrid. Secondly, using correlation prediction theory realized the coordinated control of each subsystem based on the reliability of the system for coordination variables . Finally, Taking the operation cost as the optimization index and reliability as constraints coordinated grid connected and islanded operation of microgrid smooth switching and realized the optimized operation of the whole system. This project aims to provide ideas for improving the efficient use of solar energy.

如何提高太阳能发电效率，降低投入和运营成本，建立一个可靠稳定的运行的微电网系统是目前世界各国共同关注的问题。本项目以此为研究点，对以太阳能热发电为主，包含光伏发电、燃汽轮机发电以及储能组成的冷热电联供系统建立多级多目标优化模型，首先，利用大系统递阶分级理论建立微电网各关联子系统的最优化模型；其次，利用关联预测理论，以系统的可靠性为协调变量实现各子系统的协调控制；最后，以运行成本为优化指标，可靠性为约束条件，协调微电网的并网和孤岛运行平滑切换，实现整个系统的最优化运行。本项目的实施旨在为提高太阳能的高效利用提供思路。

本项目立足中国西部，研究太阳能热发电为主微电网的优化和控制问题，如何提高太阳能发电效率，降低投入和运营成本，历经四年对能够并网和孤岛运行的微电网的大系统递阶控制理论研究，并进行了案例分析，对以太阳能热发电为主，包含光伏发电、燃汽轮机发电以及储能组成的冷热电联供系统建立多级多目标优化模型，首先，利用大系统递阶分级理论建立微电网各关联子系统的最优化模型；其次，利用关联预测理论，以系统的可靠性为协调变量实现各子系统的协调控制；最后，以实际的西部为研究背景，进行实例分析研究，实现整个微电网的最优化运行。本项目的实施旨在为提高太阳能的高效利用提供思路。