LED照明负荷提供调频备用的容量评估与控制策略

发布时间：2018-03-29 08:10

本文选题：LED照明负荷　切入点：功率聚合　出处：《山东大学》2017年硕士论文

【摘要】：电力系统频率是描述发电与负荷平衡的重要指标,传统上主要依靠发电提供备用进行调整。随着近几年环保节能以及可持续发展的要求,系统发电装机容量的结构发生着显著变化,可再生能源发电的比例有较大幅度提升,尤其以光伏发电与风力发电为主,这就导致系统提供备用的能力有所下降。与此同时,大容量火电机组发电提供备用的成本日益增加,仅仅依靠发电提供备用完成系统频率的调整已经力有不逮,这也是负荷侧备用潜力发掘备受关注的原因。LED照明作为新一代照明技术,光效高、能耗低、环保节能并且能够通过调光实现功率控制,在全球范围内受到各国的大力推广,前景广阔。LED照明负荷的可调光特性,使其能在极短时间内完成功率调整且不影响用户的满意度,以达到调节频率的目的。照明负荷用电量约占全球用电量的20%,完全具备提供负荷备用的潜力。鉴于当前LED照明负荷的保有量有限,论文首先提出了基于马尔可夫的LED照明负荷市场渗透率预测,将时间节点定在未来几年后,对彼时LED负荷数量定量评估。虽然单个LED照明负荷提供的备用有限,但数量巨大的照明负荷提供的备用则相当可观。为简化LED照明负荷的功率聚合,提出基于工作特性的LED照明负荷分类,并在此基础上利用蒙特卡洛抽样方法完成LED照明负荷的聚合。在实现LED照明负荷功率聚合的前提下,考虑用户满意度以及相关照明标准,提出LED照明负荷提供备用的机制并建立描述其备用容量与相关影响因素之间关系的多项式模型。抽取不同影响因素进行大量实验并获取相关数据,利用SPSS软件对所提出模型进行回归分析,得到多元线性模型的解析表达式并通过误差分析验证模型的精确性。最后利用获得的模型在LED功率聚合的基础上求取最大的备用容量。为实现LED照明负荷参与系统频率的一次调整,要完成LED的调光控制并给出合理的控制策略。论文设计了 LED的驱动以及调光电路并通过仿真实现LED的PWM调光。在简化的系统频率控制模型基础上,论文提出了 LED照明负荷参与的系统频率控制模型,并参考系统的负荷频率特性设计了单个LED照明负荷响应系统频率的调节特性。考虑到实际室内照明与单个LED调节特性的差别,利用ANN实现室内照明调光水平与工作面照度的映射关系的描述,在参考LED照明负荷提供备用机制的基础上,利用最优控制理论得到室内照明的最优控制。根据设计的LED照明负荷调节特性提出了 LED参与系统一次调频的控制策略,最后对LED照明负荷参与一次调频进行仿真,验证LED参与系统一次调频的有效性。
[Abstract]:The frequency of power system is an important index to describe the power and load balance, mainly rely on traditional power adjustment to provide spare. In recent years with the environmental protection and sustainable development, significantly changing the structure of power system capacity, the proportion of renewable energy to power the increase by a large margin, especially in the photovoltaic power generation and wind electric power generation, which leads to the system ability to provide spare decline. At the same time, power generation large capacity thermal power units to provide spare cost increasing, relying solely on the power supply spare complete system frequency adjustment has been incompetent, this is also the interruptible load reserve to explore the potential reasons for concern.LED lighting as a new generation of lighting technology. High light efficiency, low energy consumption, environmental protection and energy saving and can realize the power control by dimming, heavily promoted countries in the global scope, prospect Adjustable optical properties of wide.LED lighting load, which can complete the power adjustment in a very short period of time and does not affect the user satisfaction, in order to regulate the frequency. Lighting load electricity consumption accounted for about 20% of global consumption, has provided load reserve potential. In view of the current LED lighting load have a limited amount of this paper put forward LED prediction based on Markov load lighting market penetration, the time node in the next few years, the number of quantitative assessment of wound LED load. While standby single LED lighting load and the limited but spare lighting load a huge number of offers is considerable. For the polymerization of simplified LED lighting load power. The LED lighting load classification based on the characteristics of work, and on the basis of Monte Carlo sampling method to complete polymerization LED lighting load. In the realization of LED lighting load power poly The premise of considering user satisfaction and related lighting standards, put forward LED lighting load backup mechanism and the relationship between the polynomial model developed to describe the reserve capacity and related factors. The influencing factors of different extraction experiments were carried out and access to relevant data, the proposed model regression analysis using SPSS software to obtain analytical accuracy the expression of multivariate linear model and the error analysis model for maximum reserve capacity. Finally using the model of polymerization in LED power. As an adjustment to achieve LED lighting load of system frequency, to complete the control strategy of dimming control and give a reasonable LED. The design of LED drive and dimming circuit and realizes the LED PWM dimming by simulation. In the simplified model based on the frequency control system, this paper proposes the LED negative lighting The system frequency control model bearing participation, and designed a single LED lighting load response characteristics of the system regulating the frequency of the reference load frequency characteristics of the system. Considering the actual indoor lighting with a single LED regulating characteristic difference, realize themapping relation between illuminance level and working lighting adjustable indoor surface using ANN's description of the basic mechanism in providing backup refer to the LED lighting load, using the optimal control theory to obtain the optimal indoor lighting control. According to the LED design of the lighting load regulation characteristics of proposed LED system primary frequency control strategy, finally the simulation of LED lighting load in a FM, verify the validity of LED in a FM system.

【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM923.34

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