Research on Investment Scale Calculation and Accurate Management of Power Grid Projects Based on Three-Level Strategy

Abstract

In order to improve the investment accuracy of power grid projects, this paper takes distribution network investment as the research object, and proposes a distribution network precision investment method based on a three-level strategy of region, power supply grid, and power supply unit. Firstly, building a precise investment index system for the investment scale of the regional distribution network, and calculate the investment situation through the precise investment calculation formula of the regional distribution network. Secondly, building a time sequence evaluation system for the overall construction of the power supply grid of the distribution network, and then study the prioritization method based on investment projects. The time sequence method for the overall construction of the power supply unit of the distribution network and the multi-objective optimization precision investment method based on the target grid framework. Finally, the effectiveness and operability of the above precision investment method are verified through empirical application.INDEX TERMS Three-level strategy, investment scale calculation, interval multiplicative reciprocal matrix, PPM algorithm, multi-objective optimization.

Comprehensive Benefit Evaluation of Power Grid Investment Considering Renewable Energy Development from the Perspective of Sustainability

“…Therefore, the pairwise comparisons of the expert panel for the benefit sub-criteria are consistent, and the subjective criteria weighting results for the comprehensive benefit evaluation of a power grid investment are acceptable. According to Equation ( 9), the crisp subjective weights of the eight benefit sub-criteria for the comprehensive benefit evaluation of a power grid investment considering renewable energy development, determined by the fuzzy BWM method, can be calculated as: w s = w s j = {0.2370, 0.1478, 0.0735, 0.1019, 0.1019, 0.0560, 0.1798, 0.1019} Finally, the eight benefit sub-criteria for the comprehensive benefit evaluation of a power grid investment considering renewable energy development can be determined according to Equation (12), which is shown in Figure 5. Moreover, the CR is 0.0455, which is less than 0.1.…”

“…Ref. [12] proposes a precision investment method based on the three factors of region, power network, and power supply unit by constructing the precision investment index system of a regional distribution network. Ref.…”

A Multistep Iterative Ranking Learning Method for Optimal Project Portfolio Planning of Smart Grid

“…Problem Statement. Te optimal project portfolio planning problem of power grid is to optimize suitable projects from the project library to form the best set of optimal projects so that the power grids' infrastructure development planning is more scientifc and reasonable, which obtains greater investment benefts and fewer investment risks [8]. Te advantage of the proposed method is that the formed set will have fne benefts in the economy, society, and security felds and can be adjusted for diferent scenes.…”

“…Most existing methods applied Pareto optimization [4], fuzzy multicriteria-decision-making techniques [5], integer linear programming [6], dynamic modelling [7], or expert experience to solve the portfolio optimization problem. Te project evaluation index system was also formulated to quantize the power grid infrastructure projects with diferent weights, and the projects are optimized based on the ranking of comprehensive scores [8,9]. However, it is difcult to comprehensively consider investment temporal constraints of new construction, renewal, and expansion projects as well as annual investment limits.…”

An Investment Efficiency Evaluation Model for Distribution Network With Distributed Renewable Energy Resources

“…Under the intricate internal and external investment environment, investment efficiency becomes the key orientation and basic criterion for power grid investment decision-making. However, the investment profit is gradually declining under the massive power grid investment demand and scale (Lv and Yang, 2020;Sha et al, 2021). And, the operation pressure on the power grid is increasingly severe.…”