Strategic resource management for power grid operators
Strategic resource management for power grid operators
复制标题
电网运营商的战略资源管理
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
Michael Simon Guarisco
中科院分区：
文献类型：
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作者：
Michael Simon Guarisco
电力市场的自由化导致电网运营商的成本压力增加。由于电网运营商还负责可靠的电力供应，因此他们的目标是在成本和供应质量这两个相反的目标之间取得最佳平衡。供电质量的一个主要方面是供电的连续性，即向消费者提供电力。供电的连续性很大程度上取决于电网事故后的恢复时间，而恢复时间又直接受到执行恢复工作的（人力）资源可用性的影响。因此，电网运营商试图找到一种资源组织，以保证以最低成本提供高质量的供应。本文主要研究电网事故后恢复工作的战略资源管理问题。提出了两个模型来分析有限可用资源对供应连续性的影响。两种模型的恢复时间内因取决于当前可用的资源。第一个模型是电网运行模型，详细模拟了在所有电压水平发生事故后资源的恢复活动。重复解决分配问题，以确定哪些事件可以通过当前可用的资源恢复。该模型的结果包括对供应不可获得性的估计，这是供应连续性的间接度量，以及事件恢复时间等概率分布的估计。通过评估各种关键绩效指标，可以对不同组织的资源进行分析和比较。在不中断供应的情况下，提出了新的关键绩效指标。由于该模型对实际实例的适用性，为电网运营商的资源管理战略决策提供了一个有用的支持工具。第二个模型是一个基于组件的冗余电网模型，具有指数级的故障率和修复率。然而，修复只是
The liberalization of electricity markets has led to an increased cost pressure on power grid operators. As they are also responsible for the reliable supply of electricity, power grid operators aim to optimally balance the opposing objectives of cost and quality of supply. One main aspect of the quality of supply is the continuity of supply, i.e., the availability of electricity to consumers. The continuity of supply strongly depends on the restoration time after incidents in the power grid, which is directly influenced by the availability of (human) resources performing the restoration work. Power grid operators thus try to find an organization of resources that guarantees a high quality of supply at minimum cost. This thesis focuses on strategic resource management for the restoration work after incidents in the power grid. Two models are presented for analyzing the effects of a limited availability of resources on the continuity of supply. The restoration times in both models endogenously depend on the resources currently available. The first model is a grid operation model that simulates in detail the resources’ activities for restoration after incidents in all voltage levels. An assignment problem is repeatedly solved to decide which incidents are restored by the resources currently available. Results of the model include estimates of the non-availability of supply, which is an indirect measure of the continuity of supply, and of probability distributions of, e.g., the restoration time of incidents. By evaluating various key performance indicators, different organizations of resources can be analyzed and compared. New key performance indicators based on incidents without interruption of supply are suggested. Due to its applicability to realworld instances, the model provides a useful tool to support strategic decisions of power grid operators concerning resource management. The second model is a component-based model for redundant power grids with exponential failure and repair rates. The repair, however, is only