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首页> 外文会议>2000 International Conference on Power System Technology >A GEOMETRIC APPROACH FOR THREE-PHASE LOAD BALANCING IN DISTRIBUTION NETWORKS
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A GEOMETRIC APPROACH FOR THREE-PHASE LOAD BALANCING IN DISTRIBUTION NETWORKS

机译：配电网三相负荷平衡的几何方法

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Network reconfiguration for load balancing is the determination of switching-options for a particular set of loads on a distribution system that relieves overloads and improves load balancing. It is performed by altering the topological structure of distribution feeders which is done by changing the open / closed status of sectionalizing and tie-switches. To relieve overloads of a network and to balance feeder loads, the loads are transferred from the heavily loaded feeders to the lightly loaded ones. In this paper, a geometric approach for load balancing is presented. In the proposed method, each loop in a network is represented as a circle, which is derived from the relationship between the change of load balancing due to the branch-exchange and the power-flows in the branches. If there is no change of load balancing in the system, then all the circles touch each other at the (0,0) coordinate. The circles with no load balancing are called zero load balancing change circles. The maximum load balancing loop in the network is identified by comparing the radii of all the modified zero load balancing change circles. The corresponding loop of the largest one gives the maximum improvement of load balancing in the network. Then the possible branch exchanges in the maximum load balancing loop are investigated by comparing the size of the circle for every branch-exchange. If the loads are balanced due to a branch exchange, the size of the circle diminishes and hence the smallest circle gives the maximum improvement in load balancing and the corresponding branch-exchange is considered to be the best candidate for maximum improvement in load balancing. To show the efficiency and performance of the proposed method for the solution of computationally complex and large dimensionality problems, a system with 69-bus and 7 laterals has been considered as the test system. Test results have shown that the proposed method can identify the most effective branch-exchange operations for load balancing with less computational effort and time. The number of load flow solutions has been reduced to a greater extent in the proposed method.
机译：用于负载平衡的网络重新配置是确定分配系统上一组特定负载的开关选项的方法，该选项可以减轻过载并改善负载平衡。通过更改配电馈线的拓扑结构来执行此操作，该拓扑结构通过更改分段开关和联络开关的打开/关闭状态来完成。为了减轻网络的过载并平衡馈线负载，负载会从重负载的馈线转移到轻负载的馈线。在本文中，提出了一种用于负载平衡的几何方法。在所提出的方法中，网络中的每个环路都表示为一个圆，它是根据分支交换引起的负载平衡的变化与分支中的潮流之间的关系得出的。如果系统中的负载平衡没有变化，则所有圆都在（0,0）坐标处相互接触。没有负载平衡的圆称为零负载平衡更改圆。通过比较所有修改后的零负载平衡更改圆的半径，可以确定网络中的最大负载平衡回路。最大的一个对应环路可以最大程度地提高网络中的负载平衡。然后，通过比较每个分支交换的圆的大小，研究最大负载平衡环路中可能的分支交换。如果由于分支交换而使负载平衡，则圆的大小会减小，因此最小的圆会最大程度地提高负载平衡，并且相应的分支交换被认为是最大程度地提高负载平衡的最佳候选者。为了显示所提出方法解决计算复杂和大尺寸问题的效率和性能，已考虑将具有69总线和7个侧面的系统作为测试系统。测试结果表明，所提出的方法能够以较少的计算工作量和时间识别出最有效的分支交换操作，以实现负载均衡。在所提出的方法中，潮流解决方案的数量已大大减少。

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