Method for improvement on electric network and service expansion by using single-ring network structure

Abstract

The invention relates to a method for improvement on electric network and service expansion by using a single-ring network structure. The method comprises the following steps of (1) determining a wiring mode to a single-ring network node mode, namely a path of circuit journey ring network is led from each of two substations, the ring network circuits are lay in parallel and has no branches, the ring network circuits are connected by copper cables, and the copper cables are connected by a ring network cabinet; and (2) determining a contact point, wherein the contact point is an opened ring point and is arranged at the middle position of a single ring network, and the average allocation of circuit loads of the single ring network is facilitated. By the improvement on the single ring network mode, engineering construction is facilitated, the standard structural proportion of the circuit can be rapidly increased, a newly-formed power grid structure of a matched engineering can be constrained, and meanwhile, the ring network structure transiting to the whole line in future is also facilitated.

Description

technical field [0001] The invention belongs to the technical field of electric power engineering in power grid transformation, in particular to a method for power grid and business expansion transformation using a single-ring network structure. Background technique [0002] At present, the power grid structure presents the characteristics of multi-branch, multi-connection, and complex structure, especially the cable line, there is no clear distinction between the main line and the branch line, and there are multiple connections between the same substation and different substations. With the development of automation technology, the automatic research and judgment function of distribution automation has become a major trend in the fault handling of distribution networks. The non-faulty part of the load is transferred to other lines, so as to ensure the reliable power consumption of users. If the grid structure is too complex and there are too many connections, on the one ha...

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Problems solved by technology

In Jiancheng District, road construction, routing, and repeated power outages have become the biggest problems restricting line reconstruction. On the one hand, the project volume is huge, routing problems are concentrated, and implementation is inconvenient; , in this case, if the order of the projects cannot be handled well, it will cause repeated construction and repeated power outages, so it is difficult to realize the renovation of the line in one go

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