Power grid investment distribution and decision-making method and system based on power distribution network comprehensive evaluation

Abstract

The invention discloses a power grid investment distribution and decision-making method and system based on power distribution network comprehensive evaluation, and the method comprises the followingsteps: S1, constructing a county power distribution network comprehensive evaluation system, determining evaluation indexes, calculating the weights of the indexes, and calculating the scores of the evaluation indexes; S2, constructing a power grid investment distribution model for investment distribution; wherein S2 specifically comprises the steps of establishing a power distribution network investment allocation decision model of the system on the premise of considering county scale, load increase, power supply capability, economic benefit and social benefit of investment, allocating totalcapital of power distribution network construction and reconstruction to each county, and finally, taking risk factors and allocation fairness as optimization objectives, and optimizing the generatedpower distribution network investment and decision-making model to obtain an optimal decision model. The optimal combination of power grid investment projects is obtained by evaluating the investmentarea and introducing the capital constraint conditions according to the necessary factors of the power grid construction comprehensive level, and decision-making support is provided for power distribution network construction investment capital distribution.

Description

technical field [0001] The invention relates to the technical field of distribution network investment decision-making, in particular to a method and system for decision-making of network investment allocation based on distribution network comprehensive evaluation. Background technique [0002] The main problems in the investment allocation method currently used in the actual work of power supply enterprises are as follows: First, it is based on the experience of experts to "beat the head". Experts and relevant staff give the investment allocation of each region based on experience. The distribution network investment allocation plan obtained by this method is greatly affected by subjective factors; the second is to allocate a certain proportion according to the planned investment reported by the subordinate company. The main problem of the method is that there are many types of medium and low-voltage projects and a lot of data involved. The planning results are greatly affe...

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Problems solved by technology

[0002] The main problems in the current investment allocation method used in the actual work of power supply enterprises are as follows: First, "slapping the head" based on expert experience

Experts and relevant staff give the investment allocation of each region based on experience. The distribution network investment allocation plan obtained by this method is greatly affected by subjective factors; the second is to allocate a certain proportion according to the planned investment reported by the subordinate company. The main problem of the method is that there are many types of medium and low-voltage projects and a lot of data involved. The planning results are greatly affected by the planners. In the case of insufficient data analysis depth, there will be a certain gap with the actual demand value. The allocation obtained by this method It is difficult for the power grid investment allocation plan to match the actual demand; the third is to allocate according to the historical investment allocation ratio. By collecting and counting the investment allocation data in the historical years, the distribution network investment in the planning year is carried out according to the proportion of investment allocation in each region in the historical years. Allocation decision-making. The distribution network investment allocation plan obtained by this method cannot effectively balance the development of power grids in various regions, cannot rationally adjust investment, and cannot effectively improve the economic and social benefits of distribution network construction funds.

[0003] To sum up, although these investment allocation decision-making methods used in actual work are relatively simple, they may cause the problem of "Matthew Effect". Investment in areas with more debts in historical investment and areas with historically abundant investment will not be successful. to a reasonable adjustment

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