【作者】 林珊；

【导师】 荆朝霞；

【作者基本信息】 华南理工大学 ， 电力系统及其自动化， 2015， 硕士

【摘要】 随着国民经济的快速发展,电力建设进程迅速,导致电力系统越来越庞大,电力系统受到越来越多的威胁。黑启动作为电力系统可靠性的最后一个保障环节,显得越发重要。但是由于水电机组缺乏和燃油机组的退役,一些城市电网中根本没有启动电源。近年来兴起的分布式供能系统能源具有高效、节能、环保等优点,得到国家和政府的大力支持,建设进程迅猛。基于燃气轮机的分布式供能系统具有优越的启动和调节的性能,为给电力系统提供了合适的黑启动电源。因此,本文将基于燃气轮机的分布式供能系统作为黑启动电源,在规划阶段考虑将燃气轮机分布式供能系统作为黑启动电源带来的效益,为燃气轮机分布式供能系统的规划建设提供积极的指导意义。本文首先对基于燃气轮机的分布式供能系统作为黑启动电源的可行性进行了研究。通过在PSCAD中建模,对以分布式供能系统为启动电源的黑启动过程中可能产生的线路过电压、变压器励磁涌流等问题进行了大量的仿真分析,对相关问题提出了解决方案,并进行了技术验证,为黑启动方案优化和黑启动可靠性计算提供参考。然后,本文以节点负荷重要度和节点连接度为基础定义了节点重要度的评价方法,以线路充电电容为基础定义了线路恢复风险。通过路径深度搜索算法寻找黑启动路径,以最大平均节点重要度和最小线路恢复风险为目标,形成了黑启动路径的优化方法。在此基础上,继续分析了燃气轮机分布式供能系统作为启动电源的特点以及传统黑启动方案需要考虑的评价指标,建立了以基于燃气轮机的分布式供能系统为启动电源的黑启动方案评估指标体系。然后,结合层次分析法和数据包络分析方法,利用层次分析法计算指标原则层权重,利用数据包络分析方法计算方案效率,形成了黑启动方案的评估方法。最后,本文提出了考虑电网黑启动的燃气轮机分布式供能系统的优化规划模型,分析了黑启动可靠性、停电时间、停电损失、黑启动成本等指标的计算方法。根据本文提出的黑启动路径优化方法和黑启动方案评估方法,采用基于粒子群优化算法的整数规划方法对IEEE-RTS 79系统进行了计算分析。本文还进一步分析了多区互联电力系统中黑启动的特点,提出了多区互联系统中黑启动电源的优化规划模型。更多还原

【Abstract】 With the rapid development of the national economy, the power grid is constructed quickly and this resulting in larger and larger power system. Then the power system is under increasing threat. Thus, black start becomes more and more important as the final guarantee of power system. In recent years, distributed energy supply systems get the support of government because of its high efficiency, energy saving and less pollution. At the same time, gas turbine based distributed energy supply systems have excellent start and adjust performance, which make it suitable as black start power units.Therefore, this paper introduces gas turbine based distributed energy supply systems into power systems as black start units. An optimized planning model for distributed energy supply systems considering its black-start function is proposed, and it provides positive guidance for the planning and construction of distributed energy supply systems.Firstly, the feasibility of gas turbine based distributed energy supply system acting as a black start power unit is studied. Large number of simulation on line over-voltage, transformer inrush current and other issues which may occurs in the process of black start were run by modeling in PSCAD. Based on the simulation result, solutions are proposed and verified.Then, based on node connectivity and load, the importance evaluation method of nodes is proposed. And the line charging capacitance is used to measure the risk of line recovery. The optimization method of black start path is proposed, making maximum average importance of node and minimum risk of line recovery as objective, using path deep search algorithm to find best black start path.Furthermore, this paper analyzes the features of distributed power supply systems acting as black start units, and the evaluation need to be considered in traditional black start plan. Then Evaluation Index system for black start plan is built which with integrated distributed energy supply systems as black start units. Black start plan evaluation method is proposed using the analytic hierarchy process method to calculate criteria weights and the data envelopment analysis method to calculate the index property values.Finally, this paper proposes optimal planning method for distributed integrated energy supply systems which considering its black start function. The method take power outage time, power loss, black start costs into account. And the Particle Swarm Optimization base integer programming is adopted in the method. The proposed method is used to calculate for IEEE-RTS 79 system.更多还原