Rhombic power supply topological structure of diamond-shaped power distribution network

Abstract

The invention discloses a rhombic power supply topological structure of a diamond-shaped power distribution network. The structure comprises transformer substations, and further comprises a switching station and a ring network station, wherein two adjacent transformer substations are connected through a backbone network cable, a plurality of main nodes are arranged on the backbone network cable, the main nodes are switching stations of which all incoming and outgoing lines are provided with circuit breakers, and the switching stations are powered by double-side power supply four loops and are of a double-loop network structure in open-loop operation. Each switching station is externally connected with a secondary trunk network cable, each secondary trunk network cable is provided with a plurality of secondary nodes, each secondary node is a ring network station in which all incoming and outgoing lines are provided with ring network switches, and the ring network station takes the switching station as a superior power supply to form a single-ring network powered by a single-side power supply or a double-ring network powered by a double-side power supply; and the backbone network cable and the secondary trunk network cable of two adjacent transformer substations form a diamond power distribution network covering the diamond-shaped area. According to the invention, the problem of insufficient inter-station load balance capability caused by different capacities of different substations can be solved.

Description

technical field [0001] The invention relates to a diamond-shaped power supply topology structure of a diamond-shaped distribution network used in the field of distribution network planning and design. Background technique [0002] At present, the single main transformer capacity of 110kV substation in the distribution network of some cities in China is twice larger than that of 35kV substation, and the site is interspersed among a large number of 35kV substations. For interconnected substations of the same capacity, the division of the power supply range of the substation usually adopts a diamond-shaped power supply mode, and the boundary of the power supply range of each substation is at the center of the diamond-shaped area. A diamond power supply pattern can completely fill an area. However, for interconnected substations of different capacities, since the compliance capacity of 110kv substations is greater than that of 35kv substations, this power supply range division ...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a diamond-shaped power supply topology of a diamond-shaped distribution network, which can solve the problem of insufficient load balancing capabilities between substations caused by different capacities of different substations

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