Arrangement method for in-phase high-voltage distribution devices

Abstract

An arrangement method for in-phase high-voltage distribution devices includes the following steps that (a) the in-phase high-voltage distribution devices needing to be arranged are selected, and voltage classes are determined; (b) the maximum value Emax in electric field intensity E distribution of the area where the in-phase high-voltage distribution devices are located is determined; (c) the maximum value Emax in electric field intensity E distribution is made to be larger than or equal to air breakdown electric field intensity Ea, and therefore the positions of the two in-phase high-voltage distribution devices are determined. According to the arrangement method, the in-phase high-voltage distribution devices are arranged objectively, substation electrical primary design improvement work of the electric power department is guided scientifically, reliable bases are provided for arrangement design work of the in-phase high-voltage distribution devices, the floor space of a distribution device site is effectively reduced, the purposes of reducing damage to the surrounding environment, the engineering volume and engineering cost are achieved, and remarkable economic benefits and social benefits are obtained.

Description

technical field [0001] The invention relates to a method for arranging co-phase high-voltage power distribution devices, in particular to the technical field of electrical primary design of power system substations. Background technique [0002] In order to save urban land resources, ensure and improve people's livelihood, rationally plan land use layout, and improve urban landscape appearance, on the one hand, high-voltage overhead lines enter the ground. Necessary content and inevitable trend; on the other hand, newly-built transmission lines are mainly cable lines, and the original high-voltage power transmission lines considered as overhead lines may be changed to cable outlets in the implementation stage. [0003] Taking Shanghai as an example, with the increasing level of power grid construction, the maturity of high-voltage cable and its accessories manufacturing technology, and the resolution of technical problems related to cable laying, construction and structure d...

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Problems solved by technology

[0007] The present invention aims at overcoming the inability of the existing specifications to objectively arrange the spacing and height requirements of the same-phase high-voltage power distribution devices, and proposes an arrangement method for the same-phase high-voltage power distribution devices, which integrates the electric field strength in the field of high-voltage and insulation technology , according to the judgment basis of the air breakdown electric field strength, considering various influencing factors such as the appearance parameters of the power distribution device, the relative dielectric constant of the power distribution device, the height difference of the live part of the power distribution device, and the layout spacing of the power distribution device, the same phase The objective arrangement of high-voltage power distribution devices makes the arrangement of power distribution devices adopted in the design stage of electrical primary equipment of substations more safe, rational and scientific

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