Rural electric network layout optimization method based on urban and rural integration

Abstract

The invention provides a rural electric network layout optimization method based on urban and rural integration, which belongs to the field of rural electric network plan construction. An electric network structure model under the urban and rural integration layout, an economic power supply radius and economic power factor calculation model using the minimum annual cost as an objective function, a voltage grade sequence economic technology index optimization model and the like are built, a layered design and building method of the electric network structure model is systematically and completely provided, and in addition, the electric network annual cost optimization model is given for all voltage grade sequences. The method belongs to the electric network plan design method, which integrates the plan and the design and is applicable to the urban and rural integration.

Description

technical field [0001] The invention belongs to the field of planning and construction of rural power grids, and in particular relates to a method for optimizing the layout of rural power grids based on urban-rural integration. Background technique [0002] Many domestic and foreign research methods on the voltage system are to obtain the maximum economic benefits under the premise of meeting the technical requirements and safe, reliable and stable operation, that is, the comprehensive cost of power grid operation (including construction investment, line loss, transformer, etc.) Loss, operation and maintenance costs, depreciation, etc.) are minimal. The voltage level in the grid voltage system basically follows the law of "geometric mean" and the principle of "rounding up two and finding three". The law of "geometric mean value" is for a network or a regional network, the economic voltage U when the comprehensive cost is minimized is obtained from the relational expression ...

AI Technical Summary

Problems solved by technology

In the actual operation of the power grid, if the voltage level difference is too large, it will cause difficulties in the production and operation of substation equipment and low-voltage transmission, resulting in a large number of outgoing lines and long low-voltage power transmission distances, resulting in increased losses

Conversely, if the level difference is too small, there will be too many substation levels, resulting in unnecessary repeated substations, increasing the operating costs of the power grid, and also causing overlapping power supply ranges, and the role of each voltage level cannot be fully utilized

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