一类智能电网可调负荷调度及优化控制方法研究

发布时间：2018-04-22 07:00

本文选题：负荷调度 + 优化控制　；参考：《杭州电子科技大学》2017年硕士论文

【摘要】：随着智能电网的快速发展,各种类型的可调负载逐渐普及。相比于传统意义的电网,智能电网可以进行负荷调度,维持电力系统的稳定运行状态。因此,如何有效地进行负荷调度控制、优化负荷曲线、优化电网内功率潮流等问题日益受到关注。本文基于智能电网的背景,开展关于可调负载的优化调度方法及仿真研究,具体研究内容包括:(1)针对静态控制系统,提出一种含供电约束的负荷优化控制方法。根据系统特征对各类负荷进行建模,并考虑供电约束,通过建立有效的目标函数,将可调负荷调度问题转化为可解决的优化控制问题。利用分布式控制策略,实现负荷曲线的优化。(2)针对实时分布式系统,提出一种含供电约束的可调负荷调度策略。该策略可对发电过程中的波动进行补偿,实现负荷曲线对供电曲线中的实时追踪。通过对相关变量进行预测,实现可调负载随机接入电网,并引入虚拟负荷等概念,进而提出实时控制方法。(3)通过引入分支流模型,对配电网中的潮流优化控制方法进行分析与研究。采取逐步松弛的策略,将原非凸的NP难题转化为简单问题,从而实现了分支流模型的求解。
[Abstract]:With the rapid development of smart grid, various types of adjustable loads are becoming more and more popular. Compared with the traditional power grid, smart grid can carry out load dispatching and maintain the stable operation state of power system. Therefore, how to control the load effectively, optimize the load curve and optimize the power flow in the power network has been paid more and more attention. In this paper, based on the background of smart grid, the optimal dispatching method and simulation research on adjustable load are carried out. The specific research contents include: 1) for static control system, a load optimal control method with power supply constraints is proposed. According to the characteristics of the system, the load scheduling problem is transformed into a resolvable optimal control problem by establishing an effective objective function and considering the power supply constraints. Based on the distributed control strategy, the load curve is optimized. (2) for the real-time distributed system, an adjustable load scheduling strategy with power supply constraints is proposed. This strategy can compensate the fluctuation in the process of generation and realize the real-time tracking of load curve to the power supply curve. By predicting the related variables, the adjustable load can be randomly connected to the power network, and the concept of virtual load is introduced, and then a real-time control method. The power flow optimization control method in distribution network is analyzed and studied. By adopting the strategy of gradual relaxation, the original non-convex NP problem is transformed into a simple problem, and the solution of the branching model is realized.
【学位授予单位】：杭州电子科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM73;TM76

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