考虑大规模新能源接入的电力系统规划研究及应用

发布时间：2018-03-02 23:16

本文选题：大规模新能源　切入点：电力系统规划　出处：《华北电力大学(北京)》2017年博士论文　论文类型：学位论文

【摘要】：大力发展新能源是推进我国能源改革,实现能源结构转变的当务之急,具有重要的战略意义。我国新能源资源总量巨大,分布相对集中、与负荷中心呈逆向分布的特点,因此开发主要采用“规模化开发、集中并网”的模式。但是受能源技术、源网建设等影响,新能源在装机容量大幅上升的同时,新能源利用率却持续下降,新能源的消纳问题成为了短时的瓶颈,很大程度上限制了我国新能源的进一步发展。为满足电力系统运行模拟对新能源出力数据的精准需求,为含大规模新能源电力系统运行模拟提供基础,本文首先开展了面向电力系统规划及运行模拟建模的风电出力特性分析以及出力重构研究。从时间效应和空间效应两个角度分析了风电出力的随机波动特性,对风电出力特性进行定量评价分析,研究了风电出力特性评价分析指标体系;针对现有研究中利用经验分布模拟风电出力的缺陷,从多时间尺度上对风电场出力进行重构,并应用实际风电场数据验证重构算法的有效性。风力发电和光伏发电为代表的新能源发电相比于传统电源表现出明显的出力随机性和不确定性,开展电力系统规划设计工作需要充分计及新能源发电的特点,建立合理的新能源发电出力模拟模型以及考虑新能源的电力系统运行模拟模型。为满足考虑大规模新能源接入的电力系统规划工作需求,本文研究了考虑大规模新能源接入的电力系统运行模拟优化建模。计及不同的运行模拟目标,提出了新能源出力特征指标,以及新能源发电典型出力场景的筛选原则和方法;建立了火电、核电、水电等常规电源的子模拟模型,并根据不同的省区间电力电量交换模式,提出了输电线路电力电量交换模型以及电力电量交换流程;在此基础上,考虑系统运行多约束条件,计及多种电源的优化协调,提出了含大规模新能源电力系统运行模拟优化模型;进一步分别考虑电力系统长期、短期运行约束,将提出的模型和方法应用于我国实际电网算例系统,开展了系统运行模拟实证研究以及新能源消纳研究。结合我国实际电网的大规模新能源消纳需求,为指导我国大规模新能源基地的实际消纳,本文从风光储联合发电和风火打捆联合输电两方面研究了提高新能源消纳能力的电力系统优化规划方法。通过对比分析负荷特性和电源出力特性的差异,研究了影响新能源消纳能力的关键因素;在此基础上,以风光储联合系统输出功率变化率为目标函数,有功功率偏差率、峰谷斜率总和、输出功率波动率为约束条件,提出了风光储联合系统的容量优化配置流程;以风电弃风率小、系统经济性好、电力系统安全稳定等为原则,提出了风火打捆输电协调优化规划方法,并开展了电力系统优化规划实证研究。本文的研究内容对于实际电网中跨区域互联电力系统的新能源消纳研究与电力系统规划研究具有重要工程指导意义。
[Abstract]:The development of new energy is to promote China's energy reform, realize the transformation of energy structure a pressing matter of the moment, has important strategic significance. China's total amount of new energy resources is huge, the distribution is relatively concentrated, is the reverse distribution and load center, so the development mainly adopts "the scale of development, integration" mode. But by energy technology effect of source, network construction, new energy in the installed capacity increased sharply at the same time, new energy utilization rate has continued to decline, new energy consumptive problem has become the bottleneck of the short term, largely restricted the further development of China's new energy. In order to meet the precise needs of power system operation simulation output data of new energy provide the basis for the operation, with large-scale new energy power system simulation, this paper carried out for power system planning and operation simulation modeling of wind power output characteristics analysis and output The reconstruction of the random fluctuation of wind power output. The analysis from two angles of time effect and space effect, the output characteristics of wind power in the quantitative evaluation analysis of wind power output characteristics of the evaluation index system for the distribution of defect analysis; simulation of wind power output using the experience of current research of wind power from reconstruction the multi time scale, and the effectiveness of the verification of the actual wind farm data reconstruction algorithm. The wind power generation and photovoltaic power generation as the representative of the new energy power generation compared to the traditional power supply output showed the randomness and uncertainty of power system planning and design work, carry out the need to fully gauge and characteristics of new energy power generation, to establish a reasonable the new energy power generation simulation model and operation simulation model of power system new energy into account. In order to meet the power system with large-scale new energy industry planning for access Demand, the simulated operation optimization modeling of large-scale power systems of new energy access. And considering the different operation simulation target, put forward the new energy output characteristics, and new energy power generation output typical scene selection principles and methods; the thermal power, nuclear power, hydropower and other conventional power sub model, and exchange according to the power of different provinces, the power transmission line switching model and the electric power exchange process; on this basis, considering the system operation constraints, optimization and coordination and a variety of power meter, put forward a simulation optimization model with operation of large-scale new energy power system; further power system considering the long-term, short-term operation the application of constraint, the models and methods proposed in our practical grid calculation system, carry out the system operation simulation empirical research and new energy Consumption research. Combining with the large-scale new energy consumptive demand of China's actual power grid, as the actual consumptive guiding China's large-scale new energy base, the hybrid photovoltaic and wind power generation and wind & thermal transmission combined the two aspects of the improved optimization method of power system planning new energy consumptive ability. Through the comparative analysis of different load characteristics and output characteristics power, key factors to study the influence of the new energy consumptive ability; on this basis, the objective function is the rate of output power of wind solar storage combined system changes, active power deviation rate, peak and valley slope total output power fluctuation rate as the constraint conditions, proposed capacity optimization process scenery storage system combined with wind power; the rate of abandoned wind system, good economy, safety and stability of power system as the principle, proposed wind & thermal transmission coordination optimization planning method, and carry out the optimization of power system An empirical study on planning. This paper has an important guiding significance for the construction of new energy consumptive and research of power system planning of cross regional interconnected power systems in an actual power grid.

【学位授予单位】：华北电力大学(北京)
【学位级别】：博士
【学位授予年份】：2017
【分类号】：TM715

【参考文献】