Optimal Expansion of Transformer Substations
Optimal Expansion of Transformer Substations
复制标题
变电站优化扩容
DOI：
10.1109/tpas.1982.317396
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发表时间：
1982
期刊：
影响因子：
--
通讯作者：
Hamed M. El
中科院分区：
文献类型：
--
作者：
M. Saied;N. Fetih;Hamed M. El
由于对电能的需求不断增加，现有的电力Transformer变电站的传输容量必须相应地增加，以防止其过载。本文提出了一种新的方法，这种变电站的优化扩展。优化的目标函数包括原有的已经存在的电力变压器和新的并联连接的额外的Transformer的总的年成本。优化过程的独立变量是新Transformer的额定功率和主要几何尺寸。这些变量不仅影响新的Transformer的电气参数，而且还控制着原变压器和新变压器之间的负载分配。任何导致它们中任何一个过载的情况都要排除在外。结果将在很大程度上取决于所假设的电磁载荷。结果表明，对于新的Transformer铁芯磁通密度的某一值，变电站的总年成本存在一个绝对最小值，而增加电流密度将导致单调减少的目标成本函数。新方法被应用到一个实际的例子，并给出了几个检查其有效性。
Due to the increasing demand for electrical energy, the transmission capacity of existing power transformer substations must be correspondingly increased to prevent their overloading. This paper represents a new method for the optimal expansion for such substations. The optimized objective function includes the total annual cost of both the original already existing power transformers and the new parallel connected additional transformer. The independant variables for the optimization process are the power rating and the main geometrical dimensions of the new transformer. These variables affect not only the electrical parameters of the new transformer, but also govern the load sharing between the original transformers and the new one. Any condition yielding overloading of either of them is to be excluded. The results will strongly depend on the electrical and magnetic loadings assumed. It is shown that for a certain value of the new transformer core flux density, an absolute minimum for the total substation annual cost exists, whereas increasing the current density will result a monotonous decrease of the objective cost function. The new method is applied to a practical example, and several checks for its validity are given.