计及可中断负荷和风电接入的随机经济调度方法研究

发布时间：2018-04-03 17:03

本文选题：可中断负荷　切入点：风电波动　出处：《天津大学》2014年硕士论文

【摘要】：随着社会和国民经济的发展,资源和环保问题对电力系统的调度运行提出了更高的要求,大量的可再生能源发电设备已接入到电力系统中,并且还将在未来一段时间内保持较高的增长态势,仅由传统发电资源来满足负荷需求的经济调度模式已不能满足现有电网在经济性和安全性方面的要求。可中断负荷作为一种重要的主动式需求响应手段,通过电网和用户之间的双向互动,可帮助电力系统消纳可再生能源、调节负荷需求,是提升电网调度运行经济安全性的重要手段。本文将可中断负荷和风电的接入纳入到经济调度中,在综合考虑系统调度的各种约束条件的基础上,分别对单时段静态经济调度和多时段日前经济调度进行了研究。本文的主要工作如下:1、将可中断负荷作为需求侧可调度的资源,综合考虑其调度机制、可调能力、补偿价格、中断时间方面的特性,建立了计及可中断负荷的电力系统经济调度模型。2、针对单时段的静态经济调度,建立了计及可中断负荷互动和风电接入的随机经济调度模型,并综合考虑了系统安全约束、机组约束、可中断负荷约束等多种条件。基于蒙特卡罗模拟仿真和原对偶-内点法,提出了可有效求解上述随机经济调度模型的综合优化方法。3、针对时序框架下的日前经济调度,同时考虑可中断负荷和风电接入,以及日前经济调度的时段耦合性,提出了先采用日前机组组合模型确定机组和可中断负荷调用状态,后采用经济调度模型进行优化的综合优化调度方法。4、应用IEEE标准算例验证了所提方法的有效性。
[Abstract]:With the development of society and national economy, the problems of resources and environmental protection have put forward higher requirements for the dispatch and operation of power system. A large number of renewable energy generation equipments have been connected to the power system.And it will maintain a high growth trend in the future. The economic dispatching mode, which only uses the traditional generation resources to meet the load demand, can not meet the economic and security requirements of the existing power grid.Interruptible load, as an important means of active demand response, can help power system absorb renewable energy and adjust load demand through two-way interaction between power grid and users.It is an important means to improve the economic security of power grid dispatching.In this paper, interruptible load and wind power access are incorporated into economic scheduling. On the basis of considering all kinds of constraints of system scheduling, single time static economic scheduling and multi time pre-day economic scheduling are studied respectively.The main work of this paper is as follows: 1. The interruptible load is regarded as the demand-side schedulable resource, and the characteristics of scheduling mechanism, adjustable ability, compensation price and interrupt time are considered synthetically.The economic dispatching model of power system with interruptible load is established. For the static economic dispatching of single period, a stochastic economic dispatching model considering interruptible load interaction and wind power access is established, and the system security constraints are considered synthetically.Unit constraints, interruptible load constraints and other conditions.Based on the Monte Carlo simulation and the original dual-interior point method, a comprehensive optimization method .3is proposed to solve the above stochastic economic scheduling model effectively. The method is aimed at the pre-day economic scheduling under the framework of time series, taking into account interruptible load and wind power access at the same time.As well as the coupling of pre-day economic dispatch period, it is proposed that the pre-day unit combination model be used to determine the unit and interruptible load transfer state.After that, the economic scheduling model is used to optimize the comprehensive optimal scheduling method. The effectiveness of the proposed method is verified by a IEEE standard example.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM73

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