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Reliability and economy-coordinated optimization method of power distribution network planning and investment

A technology for distribution network planning and investment optimization, applied in instruments, data processing applications, forecasting, etc., to achieve the effect of improving capital operation efficiency

Active Publication Date: 2015-06-03
STATE GRID CORP OF CHINA +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is, in order to solve the problems existing in distribution network planning, the present invention proposes a distribution network planning investment optimization method based on the coordination of reliability and economy

Method used

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  • Reliability and economy-coordinated optimization method of power distribution network planning and investment
  • Reliability and economy-coordinated optimization method of power distribution network planning and investment
  • Reliability and economy-coordinated optimization method of power distribution network planning and investment

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Embodiment Construction

[0051] This embodiment is carried out on the premise of the technical solution of the present invention, and a detailed implementation manner and specific operation process are given. The investment optimization steps in this embodiment are as follows: figure 1 As shown, the comprehensive evaluation process of investment benefit is as follows: Figure 4 shown.

[0052] The example of the present invention is based on the actual power grid structure of a certain city in a certain year, analyzes the characteristics of the regional economic structure in that year, and refers to the sub-regional reliability targets recommended by the distribution network planning and design guidelines to determine the economic loss indicators related to power outages. Statistical data obtains the weight of indicators such as unit investment increased power supply, unit investment increased supply load, policy orientation, social power outage loss, etc., and the final optimized investment allocati...

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Abstract

The invention discloses a reliability and economy-coordinated optimization method of power distribution network planning and investment. The method firstly determines unit load reliability improving costs and unit load increasing costs, then determines investment benefits of corresponding sub-regions, and finally establishes a power distribution network investment optimization distribution model with the goal of maximizing the investment benefits. The method comprises the following steps: (1) estimation of investment costs: estimating a reliability improving investment cost and a unit load increasing cost and an overall investment cost; (2) estimation of investment benefits: proposing the concept of a ratio of output value to unit electric energy consumption, evaluating the economic benefits generated by unit electrical energy in this region; (3) estimation of target reasonableness: determining the reasonableness of annual target power supply reliability setting according to the relationship between the total investment cost and the budget; (4) establishment of a reliability and economy-coordinated investment optimization model: taking different types of power supply loads in all regions as optimization variables, taking the maximum investment benefits of the whole region as the optimization target, and taking the investment budget as the constraint.

Description

technical field [0001] The invention relates to a distribution network planning investment optimization method based on the coordination of reliability and economy, and belongs to the technical field of electric power planning. Background technique [0002] The distribution network is an important part of the power grid. It is directly oriented to power users. It is a key link to ensure that power is "available and available", and it is an important infrastructure for improving people's livelihood. There are still regional power grids that still have the contradiction between reducing the power supply radius, improving the reliability of power supply for users and low equipment utilization, low voltage and high voltage in rural areas, light load during distribution and overload during the Spring Festival. Technically, the research work on wind power, small hydropower, and distributed energy grid connection lags behind, and it is difficult to scientifically guide the coordina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06Y02E40/70Y04S10/50
Inventor 熊宁王伟舒娇王洁聂更生谢鹏
Owner STATE GRID CORP OF CHINA
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