Configuration method for sectionalizing and interconnection switches of power distribution network

Abstract

The invention discloses a configuration method for sectionalizing and interconnection switches of a power distribution network. The method comprises the following steps: collecting parameters required for current situation data of the power distribution network and model building, and building a standardized power distribution network power supply model; setting different power supply region reliability targets, namely comparing different load densities and power supply radiuses and setting the target according to the requirements, which are stipulated by a guide rule, of the power supply region grades on the reliability, so as to achieve the power supply reliability of making customers satisfied; evaluating a connection mode; and recommending schemes for regions with different load levels. The configuration method has the beneficial effects that the entire life-cycle cost of the connection mode is considered aiming at the reliability requirements of different grades of power supply regions; the sectionalizing and interconnection switches are reasonably configured; the optimal connection mode is selected; the reasonability of the power distribution network is comprehensively improved; a good reference is provided for power distribution network planners for power distribution network planning and construction; a strong technical support is provided for power distribution network planning work in the future; and the method is easy to grasp and operate.

Description

technical field [0001] The invention belongs to the technical field of electric power grid control, and in particular relates to a distribution network segment and a configuration method for tie switches. Background technique [0002] At present, the commonly used distribution network optimization methods mainly include the following: [0003] (1) The segmental optimization method of medium voltage distribution network based on discrete particle swarm for LCC published in the 8th issue of "East China Electric Power" in 2014. [0004] This method aims at the reliability cost and benefit of the system after the sub-section switch is connected to the main feeder of the medium-voltage distribution network, and establishes a corresponding optimized sub-mathematical model based on the equipment life cycle cost concept (LCC), and analyzes the sub-section in detail. The impact of switch settings on the reliability of power distribution systems, a recursive formula for the reduction...

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Problems solved by technology

[0007] The disadvantage is that this method is mainly used for the planning of new or insufficiently constructed power grids. For the fully constructed distribution network, the planning results can only be used as a reference for grid planners to eliminate invalid connections.

In addition, the boundary condition set by this method is that all feeders have only one connection, that is, the single-connection mode, and the basis for eliminating invalid connections is only applicable to the case of a single-connection feeder set, and cannot analyze the multi-connection mode

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