Method for building evaluation models of power distribution networks after rolling planning

Abstract

The invention discloses a method for building evaluation models of power distribution networks after rolling planning. The method includes establishing six primary indexes of power source planning, power demand prediction, power grid planning execution conditions, investment execution conditions, power grid development level and equipment utilization rates and 26 corresponding secondary indexes; determining weights of the primary indexes and the secondary indexes by the aid of hierarchical analysis processes; establishing equipment utilization rate influence factors; computing primary index quantization values and total quantization values by the aid of the weights of the primary indexes and the secondary indexes and the equipment utilization rate influence factors. The method has the advantages that the power distribution networks can be evaluated by the aid of evaluation values and total evaluation values of the various indexes after rolling planning, accordingly, scientific quantitative analysis bases can be provided for power distribution network planning and investment decision making in late periods, the problems of deficiency of evaluation models of existing power distribution networks after rolling planning and inaccurate and unscientific evaluation can be effectively solved, planning can be adjusted scientifically, and the method is favorable for quantitative horizontal comparison on power distribution network planning work in various regions.

Description

technical field [0001] The invention relates to a modeling method of an evaluation model after distribution network rolling planning, and belongs to the technical field of distribution network planning. Background technique [0002] Scientific and reasonable distribution network planning is the foundation of power grid development. So far, distribution network planning has been widely carried out in my country for more than ten years, and the relevant theoretical system and technical methods are becoming more and more mature. However, the distribution network planning carried out around "strategy orientation, problem orientation and demand orientation", especially the rolling planning of distribution network in the near and mid-term, still has the following problems to be solved: the strategic designation of distribution network planning in a region , the pros and cons of plan implementation and execution effects, lack of quantitative "post-evaluation" models and methods. ...

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Problems solved by technology

However, the distribution network planning carried out around "strategy orientation, problem orientation and demand orientation", especially the rolling planning of distribution network in the near and mid-term, still has the following problems to be solved: the strategic designation of distribution network planning in a region , the pros and cons of plan implementation and execution effects, lack of quantitative "post-evaluation" models and methods

[0005] In recent years, some literatures have studied the post-evaluation system of distribution network planning, and evaluated it from five aspects: safety, economy, flexibility, reliability and coordination. needs to be analyzed and evaluated, and the evaluation is inaccurate and unreasonable

There are also evaluations from the five aspects of power supply reliability, power supply capacity, short-circuit current, power quality, and economy. However, in the economic indicators, the planned investment and actual investment are not comprehensively compared and analyzed, which leads to inaccurate and inaccurate evaluation. science

Neither of the former two evaluates the equipment utilization rate, let alone considers its influence coefficient on the quantitative evaluation value

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