Marginal cost theory-based power distribution network structure planning method

A technology of marginal cost and grid planning, applied in data processing applications, instruments, calculations, etc., can solve problems such as comprehensive consideration, no consideration of reliability, quantitative benefits, and no economy

Inactive Publication Date: 2014-04-02
FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the reliability index has been considered in most distribution network planning, but the quantitative benefit of reliability has not been considered, let alone the comprehensive consideration of economy.

Method used

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  • Marginal cost theory-based power distribution network structure planning method
  • Marginal cost theory-based power distribution network structure planning method
  • Marginal cost theory-based power distribution network structure planning method

Examples

Experimental program
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Effect test

Embodiment 1

[0054] The distribution network planning method to which the present invention belongs is simulated and calculated based on the data of a power supply bureau of a city in southern my country, and the specific steps are as follows:

[0055] (1) According to the "Existing Typical Wiring Modes of 110 kV and Below Distribution Networks of China Southern Power Grid Corporation", 14 typical wiring schemes were selected, and their reliability evaluations were carried out respectively. The power supply reliability rate of each typical scheme is as follows: As shown in Table 1, the reliability-based evolution process of each scheme can be obtained, such as figure 2 with image 3 shown.

[0056] Table 1 Reliability and benefit evaluation results of typical grid planning schemes

[0057]

[0058] (2) Calculate the annual power outage loss cost and investment cost of each scheme separately, and take the unit power outage loss cost of each node as the same: IEAR i =13.56 yuan / kWh ...

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Abstract

The invention discloses a marginal cost theory-based power distribution network structure planning method, which mainly comprises the following steps of S10, determining all possible planning schemes to form a planning scheme set; S20, performing reliability evaluation on a certain planning scheme to be evaluated to obtain a reliability index of each load point, and calculating the annual outage cost of the scheme; S30, calculating the investment cost of the scheme, and converting the investment cost into a uniform annual value; S40, calculating normalized values of the outage cost and the investment cost according to loads respectively; S50, calculating a marginal cost performance ratio, and making a scheme acceptation and rejection decision according to a range where the marginal cost performance ratio is within; S60, repeating the steps S20 to S50 until all the planning schemes to be evaluated are evaluated, and determining an optimal planning scheme for a power distribution network according to the cost performance ratio of each scheme.

Description

technical field [0001] The invention relates to an evaluation and analysis method for the reliability benefit of a power distribution system of a power grid, in particular to a distribution network grid planning method based on marginal cost theory. Background technique [0002] With the continuous development of the national economy and the continuous improvement of people's living standards, the demand for electricity from all walks of life in society is increasing day by day, and the requirements for power supply reliability are also getting higher and higher. Especially for important users involved in the national economy and people's livelihood, the loss caused by power outage is very huge, so the power supply department pays more and more attention to the reliability of power supply, and improving the reliability of power supply has become a long-term mission of the power industry. [0003] However, with the improvement of power supply reliability of the distribution n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/06
Inventor 陈健卯张乔琳程凌森李海波孔祥轩
Owner FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID
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