Management of a smart grid with controlled-delivery of discrete levels of energy
Management of a smart grid with controlled-delivery of discrete levels of energy
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DOI：
10.1109/epec.2013.6802965
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发表时间：
2013-08
期刊：
影响因子：
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通讯作者：
R. Rojas-Cessa;Yifei Xu;H. Grebel
中科院分区：
文献类型：
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作者：
R. Rojas-Cessa;Yifei Xu;H. Grebel
在能源短缺时，电网可能会面临消耗不确定性、过载并最终出现停电的情况。主要原因是，目前，电力供应商对不断增加的需求的反应滞后于提出电力要求。在本文中，我们研究了一种不同的请求-供应方法，其中必须事先请求所提供的功率量。然后，根据配电回路（DT）的物理、经济和管理限制以及突发需求激增或供应短缺等情况提供电力。如最近提出的，在可重复输送电网中，通过离散功率电平直接向客户输送电力。客户的地址被嵌入电信号中，与客户相关联的智能负载使消耗的功率曲线化，并为DT提供无功稳定性。我们分析了一种用于分配电力的方法，其中DT的容量由所请求的功率的平均值来限定（因此引入了非常严格的要求）。在电力短缺的情况下，通过使用循环模式来调度DT。我们表明，DT可以满足约98%的电力需求的情况下，能源短缺和超过99%，通过增加小的安全裕度。当未使用的能量在供应激增期间存储在本地分布式存储元件（云存储）中并在需求高峰时使用时，可以看到进一步的优势。该电网方案对于绿色配电是有利的，因为它使得能够在电网管理者的判断下在客户和本地供应商之间直接交换能量。
At time of energy shortage electrical grids may be exposed to consumption uncertainties, overloads and ultimately power failures. The main reason is that, at present, the response of the power provider to increasing demand is lagging after requests for power are made. In this paper, we examine a different request-supply approach where the amount of delivered power must be requested beforehand. The power is then supplied in compliance with the physical, economical, and management limits of the distribution loop (DT), and in accordance with scenarios, such as a sudden demand surge or supply shortage. As proposed recently, in the controllable-delivery power grid, delivery of electrical power is made through discrete power levels directly to customers. The customer's addresses are embedded in the electrical signal, and smart loads associated to customers curve the consumed power and provide reactive stability to the DTs. We analyze an approach for distributing electrical power, where the capacity of the DT is capped by the average of the requested power (and therefore introduces a very stringent requirement). In cases of power shortage, the DT is scheduled by using a round-robin model. We show that a DT can satisfy about 98% of power requests in scenarios of energy scarcity and beyond 99% by adding small safety margins. Further advantages are seen when unused energy is stored in local distributed storage elements (cloud storage) during supply surges and used in time of demand peaks. This grid proposal is advantageous for green power distribution because it enables a direct exchange of energy between customers and local suppliers at the discretion of the grid manager.