城市配电网接入分布式光伏发电系统的规划研究

发布时间：2018-07-10 13:51

本文选题：城市配电网 + 分布式光伏发电系统　；参考：《华北电力大学》2014年硕士论文

【摘要】：全面推广节能环保的分布式发电能有效减少化石燃料的消耗，有利于解决当前突出的环境问题、社会问题。但是，分布式发电的功率输出具有波动性、随机性、间歇性等特点，也给城市配电网带来许多问题。城市配电网作为大电网的有机组成部分，直接关系到主动配电网和智能电网的发展安全性和可靠性，具有显著的综合经济效益。因此本文深入探究配电网规划及分布式发电技术的发展前景，系统的分析了当前的国内外研究现状。详实、系统地研究光伏发电系统的原理，并且建立了光伏发电系统的物理模型和光伏逆变器的数学模型。针对城市配电网进行了深入的研究，并且在技术层面上，深入分析光伏发电系统接入配电网的影响。针对光伏发电系统的选址、定容问题，采用有功、无功网损微增率来确定光伏发电系统的接入位置，提出综合微增率，通过计算综合微增率来确保城市配网系统的网损最小。同时提出了一种配电网接入光伏发电系统的多目标规划方法，充分考虑不可控光伏发电功率、负荷的不确定性，以配电网运营商规划期的经济成本、网损、环境和电压质量四方面的指标为评价指标构成多目标的函数，并采用混沌遗传算法进行求解，，并通过IEEE-30系统进行仿真验证，仿真结果表明采用该方法能够实现配网系统的合理优化配置，从而保证城市配网系统的稳定、可靠、安全运行。
[Abstract]:The comprehensive promotion of distributed generation of energy saving and environmental protection can effectively reduce the consumption of fossil fuels and is conducive to solving the outstanding environmental and social problems at present. However, the power output of distributed generation has the characteristics of volatility, randomness and intermittency, which brings many problems to the urban distribution network. As an organic part of large power grid, urban distribution network is directly related to the development security and reliability of active distribution network and smart grid, and has significant comprehensive economic benefits. Therefore, this paper probes into the development prospect of distribution network planning and distributed generation technology, and systematically analyzes the current research situation at home and abroad. In detail, the principle of photovoltaic power generation system is studied systematically, and the physical model of photovoltaic power system and the mathematical model of photovoltaic inverter are established. Based on the research of urban distribution network, the influence of photovoltaic power system access to distribution network is analyzed in detail on the technical level. Aiming at the problem of location and constant capacity of photovoltaic power generation system, the access location of photovoltaic power generation system is determined by using active and reactive power loss increment rate, and the integrated micro-increment rate is put forward to ensure the minimum network loss of urban distribution network system by calculating the integrated micro-increment rate. At the same time, a multi-objective programming method for distribution network connected to photovoltaic generation system is proposed. The uncertainty of uncontrollable photovoltaic generation power and load is fully taken into account, and the economic cost and network loss of distribution network operators during the planning period are taken into account. The four indexes of environment and voltage quality constitute a multi-objective function, and are solved by chaos genetic algorithm, and verified by IEEE-30 system. The simulation results show that this method can realize the reasonable optimal configuration of the distribution network system, thus ensuring the stability, reliability and safety of the urban distribution network system.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM615

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