Planned project selecting and sequencing method comprehensively taking basic power supply responsibility of power network enterprise into consideration for low and medium voltage distribution network

Abstract

The invention provides a planned project selecting and sequencing method comprehensively taking basic power supply responsibility of a power network enterprise into consideration for a low and medium voltage distribution network. The planned project selecting and sequencing method is characterized in that based on the property of public undertaking unit of the power network enterprise, defining the property of a project performing the basic power supply responsibility, and dividing the projects into two types of compulsory projects needing not to participate sequencing and to-be-selected projects needing to participate sequencing; analyzing the benefits and cost constitution of the to-be-selected projects, classifying and sequencing the to-be-selected projects of different types according to the reference of the benefit-to-cost ratio, and taking projects of which the benefit-to-cost ratio is large as preferred projects, so as to meet the maximization of project planning investment benefit of the enterprise under the premise of performing the basic power supply responsibility. The method can be effectively applied to selecting and sequencing of the low and medium voltage distribution network planned projects, so as to guide the power network enterprise to maximize the project planning investment benefit under the premise of performing the basic power supply responsibility while planning the projects.

Description

technical field [0001] The invention belongs to the technology in the field of power system distribution network planning, and in particular relates to a method for optimizing and sorting distribution network planning items. Background technique [0002] Distribution network is the last link directly facing power users. With the continuous improvement of users' requirements for power supply quality, the contradiction between their ever-increasing construction needs and the limited investment capabilities of enterprises has become increasingly prominent. Reasonable arrangement of project construction time sequence and maximization of investment benefits are urgent problems to be solved in current distribution network planning. [0003] At present, in distribution network planning, the optimal order of projects is mostly based on the initial investment cost of the planning scheme, and the projects with low cost are preferred; or the project effectiveness is judged subjectively...

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Problems solved by technology

[0003] At present, in distribution network planning, the optimal order of projects is mostly based on the initial investment cost of the planning scheme, and the projects with low cost are preferred; or the project effectiveness is judged subjectively based on the experience of planners, and the order of projects is determined, resulting in the optimal order of planned projects. Lack of quantitative analysis basis for investment benefits, which is greatly affected by the experience level of planners

Some scholars have proposed to establish an index system to evaluate planning projects in their research, and compare and rank them by indirectly reflecting project investment benefits. However, there are also small and numerous distribution network planning projects, and it is difficult to evaluate and analyze each project index. Both are objective and fair

In addition, because power grid enterprises, as public institutions, are also responsible for power supply obligations while pursuing economic benefits, the current project optimization and ranking lacks comprehensive consideration and measurement of enterprise power supply responsibilities and project investment benefits

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