配电网多故障抢修与恢复协同策略研究

发布时间：2018-04-14 08:54

本文选题：配电网 + 多故障抢修　；参考：《华北电力大学(北京)》2016年硕士论文

【摘要】：配电网在电力系统网络中担负着极其重要的角色,它负责将电能分配给每一个电力用户。随着我国人民生活水平不断提高,对电力的需求与日俱增,对电力的依赖性也越来越大。随着电网规模的不断扩大,电网间联系不断加强,配电网的复杂程度达到了前所未有的水平,随之带来的配电网发生故障的机率也不断攀升,而且复杂配电网故障点引起的连锁反应范围也越来越广、越来越严重,据有关统计,电力系统中超过80%的停电是由于配电网的故障造成的,因此配电网能否稳定运行直接影响着供电质量。近年来,由于各种自然灾害造成的电网设备大规模故障屡有发生,受灾地区的生产生活都受到了严重的影响,若失电区域得不到快速恢复供电,会造成人民生命财产巨大损失。由于失电负荷的等级、大小各异,仅凭以往调度员的经验进行故障定位,制定非故障区域电力恢复与故障点抢修策略的方法已不再适用。因此,研究如何快速恢复非故障区供电,并在有限的抢修人员和资源配置的情况下,快速制定科学高效的故障任务分配方案和抢修策略就显得尤为重要。本文将配电网供电恢复与故障抢修看作一个整体,建立了配电网故障抢修与供电恢复协同模型。配电网的故障抢修与供电恢复是相互影响的,综合考虑两者的相互影响因素,在制定供电恢复方案时考虑故障抢修的有效性,在设计故障抢修方案时考虑供电恢复的可行性,运用协同思想研究其相互影响的协同策略得出整体最优方案。并通过实例分析,针对只考虑供电恢复对故障抢修的影响、只考虑故障抢修对供电恢复的影响和综合考虑两者相互影响所得的三种方案,比较一级重要失电负荷经济损失、总失电负荷经济损失和开关操作次数,证明了综合考虑供电恢复和故障抢修两者相互影响的协同策略方案的有效性。以最大程度的减少故障造成的停电社会经济损失具有重要的理论价值和现实意义。本文试图从配电网的实际情况出发,结合供电恢复与多故障抢修,建立电力系统在多故障情况下的抢修与恢复协同策略模型,以期为电力部门在配电网出现多故障重大失电情况下快速恢复供电与抢修故障提供更加高效合理的决策方案。
[Abstract]:Distribution network plays an extremely important role in the power system network, it is responsible for the distribution of electricity to each power user.With the improvement of people's living standard, the demand for electricity is increasing, and the dependence on electricity is becoming more and more.With the continuous expansion of the scale of the power network, the connection between the power grid is constantly strengthened, the complexity of the distribution network has reached an unprecedented level, the resulting distribution network fault probability is also rising.Moreover, the chain reaction caused by complex distribution network fault points is becoming more and more extensive and serious. According to relevant statistics, more than 80% of power system blackouts are caused by distribution network failures.Therefore, whether the distribution network can run stably directly affects the quality of power supply.In recent years, due to a variety of natural disasters caused by large-scale failures of power grid equipment, the production and life of the affected areas have been seriously affected. If the power loss area can not quickly restore power supply, it will cause huge loss of life and property of the people.Because of the different grades and sizes of the power loss load, the method of making the strategy of power recovery and fault point repair in the non-fault area is no longer applicable based on the experience of the dispatcher in the past.Therefore, it is very important to study how to quickly restore the power supply in the non-fault area and make the scientific and efficient fault task assignment scheme and emergency repair strategy under the condition of limited emergency repair personnel and resource allocation.In this paper, the power supply recovery and fault recovery of distribution network are considered as a whole, and a cooperative model of power supply recovery and fault recovery is established.The fault emergency repair and power supply recovery of distribution network are mutually affected. Considering the mutual influence factors, the validity of fault recovery is considered when the power supply recovery scheme is formulated, and the feasibility of power supply recovery is considered in the design of fault recovery scheme.The overall optimal scheme is obtained by using the cooperative strategy to study the interaction between them.Through the analysis of examples, considering only the effect of power supply recovery on fault repair, considering only the effect of fault recovery on power supply recovery and considering the interaction between the two, the economic loss of power loss is compared.The economic loss of total power loss and the number of switching operations prove the effectiveness of the cooperative strategy which considers the interaction between power supply recovery and fault repair.It is of great theoretical and practical significance to minimize the social and economic loss caused by failure.Based on the actual situation of distribution network and combined with power supply recovery and multi-fault rush repair, this paper attempts to establish a cooperative strategy model of power system emergency repair and recovery under multi-fault condition.The aim is to provide a more efficient and reasonable decision scheme for the power department to quickly recover and repair the power supply under the situation of multiple faults and major power loss in the distribution network.
【学位授予单位】：华北电力大学(北京)
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TM73

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