含分布式能源配电网的优化运行

With the growing concern of the global environment protecting and energy saving, the distributed generation(DG) is becoming an important technology to realize energy saving and ejection decreasing due to its flexibility and economical efficiency. More and more DGs access to the distribution network, which will profoundly affect the network reconfiguration. Therefore, intensive study on distribution network reconfiguration with DGs has important theoretical and realistical significance to sublimate the reconfiguration theory and improve the benefit of environmental protection..The model of distribution network reconfiguration(DNR) with DGs is established based on the time period and environmental protection effects. It can avoid the shortage of not taking into account the load curve and distribution character before. The correlation model between wind speed and load is analyzed, the nonlinear feature between them is obtained, which can improve the precision of this model. The change rule of line loss when stochastic current is injected to node is studied by considering the distribution characters of load and wind speed, which can speed up the model. The dynamic programming method is applied to solve the DNR problem. Some dimensionality reduction measurements such as effective switch combination, effective gain, line loss estimation and so on are taken to improve the efficiency of the reconfiguration model..Aiming at enhancing and improving the precision and speed of the model and algorithm, the theory and technology of the DNR model with DGs are innovated and perfected. The research production can give theoretical support to the planning, designing and running of distribution network with DGs.

随着全球对环境保护和节能问题的日益关注，分布式发电技术（DG）以其独有的环保性、灵活性已成为实现节能减排目标的重要发展方向。随着DG大量接入配电网，将对其重构产生深刻的影响。因此，深入研究含DG配电网的重构，对促进重构理论的升华、实现配电网节能减排、提高环保效益等具有重要的理论和工程意义。.计及负荷曲线和分布特性，建立基于时段效应和环保效应等含DG配电网重构模型；建立重构中负荷与风速的相关性模型，以捕捉风速与负荷间的非线性特性，提高模型精度；计及负荷、风速等的分布特性，研究节点注入随机电流后配电网线损变化规律，提高重构计算速度；建立含DG配电网重构的动态规划方法，通过开关有效组合、有效增益、线损估计等降维措施，提高计算效率。.以提高和改善模型、算法的精度和速度为研究目标，创新、完善含DG配电网重构模型及算法、线损变化规律等层面的理论和技术，为含DG配电网的规划、设计和运行提供量化理论支撑。

随着全球对环境保护和节能问题的日益关注，分布式发电技术（DG）以其独有的环保性、灵活性已成为实现节能减排目标的重要发展方向。随着DG大量接入配电网，将对其重构产生深刻的影响。因此，深入研究含DG配电网的重构，对促进重构理论的升华、实现配电网节能减排、提高环保效益等具有重要的理论和工程意义。计及负荷曲线和分布特性，建立基于时段效应和环保效应等含DG配电网重构模型；基于Copula理论建立负荷与风速的相关性模型，捕捉风速与负荷间的非线性特性，提高模型精度；计及负荷与风速的相关性，建立配电网重构模型，并采用遗传算法进行计算分析，分析表明计及风速与负荷的相关性能提高模型的精度。提出网损异常增量指标，通过随机潮流分析，采用边界分析与最小二乘法相结合建立该指标的线性回归模型，从而提出计及风电随机性的配电网重构的判断方法。研究节点注入随机电流后配电网线损变化规律，提高重构计算速度。本项目以提高和改善模型、算法的精度和速度为研究目标，创新、完善含DG配电网重构模型及算法、线损变化规律等层面的理论和技术，为含DG配电网的规划、设计和运行提供量化理论支撑。