含风光储微网配电网可靠性分析-电力系统及其自动化专业论文.docxVIP

内蒙古工业大学硕士学位论文 内蒙古工业大学硕士学位论文 万方数据 万方数据 摘 要 微网能有效整合分布式电源、储能及负荷，实现一体化运行。它可灵活地接入和 切出配电网，工作于并网或孤岛模式，实现可再生能源的接纳和与电网的互相支撑。 在微网规划设计阶段，分布式电源和储能的选址和定容是首先应解决的问题。研究优 化配置条件下风/光/储微网对配电网可靠性的影响，对降低微网投资费用、充分利用 可再生能源、提高配电网供电可靠性、保障电网安全稳定运行、节能减排等方面都具 有很大现实意义。 本文基于序贯蒙特卡洛模拟法，优化配置配电网中风/光/储微网，并定量分析风/ 光/储微网接入对配电网供电可靠性的影响。(1)以 RBTS-BUS6 F4 系统为例，采用序 贯蒙特卡罗模拟法评估可靠性，根据可靠性指标确定供电薄弱环节，并针对结构特点 规划风/光/储微网供电区域和微电源接入位置。(2)分别以风/光/储微网容量最小和等 年值费用最低为目标函数建立风/光/储微网容量优化配置模型。提出一个能精确表征 风/光/储微网对配电网可靠性贡献的可靠性指标——微网孤岛运行时间大于主网故障 时间的概率，作为风/光/储微网容量优化配置的可靠性约束条件。采用模拟退火粒子 群优化算法对不同可靠性约束条件下风/光/储微网进行容量优化配置。(3)评估不同可 靠性约束条件下含风/光/储微网配电网的可靠性，分析风/光/储微网对配电网可靠性的 影响。 研究结果表明，(1)根据配电网可靠性评估结果及其结构特点规划风/光/储微网供 电区域和微电源接入位置的方法可行有效。(2)风/光/储微网容量优化配置的可靠性约 束条件能有效反映风/光/储微网对配电网可靠性的影响程度。(3)风/光/储微网接入配 电网可以提高微网供电区域内负荷点以及整个配电网的可靠性。 关键词：风/光/储微网；配电网；可靠性评估；优化配置 I Abstract Microgrid can effectively integrate distributed generation, energy storage and load, realize their integrated operation. It can access or cut out the distribution network flexibly, work in grid or island mode, realize the acceptance of renewable energy and support each other with the grid. In the design stage of microgrid, It is necessary to solve the problem of the substation’s location and size of the distributed generator and energy storage. The thesis studies optimization configuration conditions under wind/ photovoltaic/ battery microgrid on reliability of distribution network effect. It is of great practical significance to reduce the microgrid investment cost, make full use of renewable energy ,improve the reliability of distribution network, ensure the safe and stable operation of the power grid, energy saving and emission reduction. Based on the sequential Monte Carlo simulation, the wind/ photovoltaic/ battery microgrid of distribution network is optimized, and the influence of wind/ photovoltaic/ battery microgrid’s accession on the power supply reliability of distribution network is analyzed quantitatively. (1) The reliability model of wind power, photovoltaic generation a