Medium voltage distribution network system

Abstract

The invention discloses a medium voltage distribution network system. The system comprises a medium-voltage backbone network, a medium-voltage branch network and control equipment, wherein the medium-voltage backbone network comprises at least one transformer substation and at least one switching station, and adopts any one wiring mode of double-petal wiring and double-ring network wiring by taking the switching station as a center; the medium-voltage branch network comprises at least one power distribution room and at least one switching station, the power distribution room is used as a load node, and any one wiring mode of direct distribution type bijection wiring, double-ring network wiring and cascade type bijection network wiring is adopted; and the control equipment is used for matching to obtain the number of the switch stations strung by the outgoing line of the transformer substation according to the capacity of the distribution room in a geographical range. The technical problem that a medium-voltage distribution network grid structure in the prior art is mainly determined based on user loads and user importance levels, when new loads increase in a region and need to be accessed to a power grid, an access scheme is generally considered according to the remaining interval number of nearby switching stations and transformer substations, and multi-contact cannot be formed to improve power supply reliability is solved.

Description

technical field [0001] The present application relates to the field of distribution network, in particular, to a medium-voltage distribution network system. Background technique [0002] With the rapid development of the economy and the continuous improvement of people's living standards, the urban electricity load continues to rise, and users have higher requirements for the reliability of power supply. As an important part of the urban power grid, the medium-voltage distribution network is the link between the power grid and users. [0003] The grid structure of the existing medium-voltage distribution network is mainly determined based on user load and user importance level. The main wiring forms include single-injection, double-injection, opposite-injection, single-ring network, double-ring network, triple-double, N supply and 1 backup Wait. Although some high-reliability areas adopt the operation mode of double-ring network closure and double-petal operation to resist...

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present application provides a medium-voltage distribution network system to at least solve the problem that the grid structure of the medium-voltage distribution network in the prior art is mainly determined based on user load and user importance level. When connecting to the power grid, the connection plan is usually considered according to the remaining intervals between the nearest switch station and the substation, and it is impossible to form multiple connections to improve the reliability of power supply.

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