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Method of building reliable improved effect relation between investment on power grid and power supply

A reliability and distribution network technology, applied in data processing applications, instruments, calculations, etc., can solve the problems that the relationship between reliability level and investment function is not given, and there are few researches

Inactive Publication Date: 2013-05-15
GUANGDONG POWER GRID CO LTD DONGGUAN POWER SUPPLY BUREAU +1
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  • Application Information

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Problems solved by technology

The general shortcomings of the above studies are: the calculation of reliability investment and reliability indicators is based on established planning schemes, and the functional relationship between reliability level and investment is not given, but there are few studies on how to establish this relationship for specific objects

Method used

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  • Method of building reliable improved effect relation between investment on power grid and power supply
  • Method of building reliable improved effect relation between investment on power grid and power supply
  • Method of building reliable improved effect relation between investment on power grid and power supply

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Embodiment Construction

[0079] The method for establishing the relationship between distribution network investment and power supply reliability improvement effect based on cost-effectiveness in the present invention, because the structure of distribution network is relatively complex, first establish ring network transformation with feeder as unit, increase segmental switch, change overhead line to cable, etc. The relationship model between the investment of feeder improvement measures and the effect of reliability improvement (measured by the reduced number of households during power outages), and then use the cost-benefit analysis method to evaluate the effects of various improvement measures, and finally establish the distribution network investment and power supply reliability Relational model, that is, to obtain the relationship between distribution network investment and power supply reliability improvement effect. Specific steps are as follows:

[0080] 1) Estimation of the effect of reliabil...

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Abstract

The invention discloses a method of building a reliable improved effect relation between investment on a power grid and power supply. Firstly, a relation model of feeder improvement measure investment and reliable improved effects (for reducing household weigh at blackout) including annular grid improvement, segment switch increasing, superterranean moved cables and the like is built with feeders serving as units. A cost and benefit analyzing method is used for estimating all effects of improvement measures and finally, a reliable relation model of the investment on the power grid and power supply is set up. With the method of building the reliable improved effect relation between the investment on the power grid and power supply, parameter variation of a feeder grid frame and improved household number in blackout corresponding to reliable parameter variation can be rapidly and effectively estimated, a good indicating effect can be exerted on a reliable improvement scheme on the power grid, a complicated power grid reliability estimating process is avoided, excellent reference values can be provided for arrangement of improvement of the power grid in a macroscopic mode and obtaining of the reliable level of the most proper power grid.

Description

technical field [0001] The invention relates to a method for improving distribution network investment according to power supply reliability, in particular to a method for establishing the relationship between distribution network investment and power supply reliability improvement effect, and belongs to the technical field of distribution network transformation. Background technique [0002] With the growth of the national economy, China's demand for electricity continues to increase. As a link in the power system that directly faces users, the power distribution system has the most direct impact on the quality and reliability of power supply for users. Statistics show that nearly 80% of user power outages are caused by faults in the distribution network. Therefore, power companies invest a lot of money in the transformation of distribution network every year to minimize the impact of power outages on users. With the continuous growth of electricity demand, the transformat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/06
Inventor 谢开贵曾强胡博高明振张晓祁应村廖庆龙邓勇郭小筱沈玉明李蹊
Owner GUANGDONG POWER GRID CO LTD DONGGUAN POWER SUPPLY BUREAU
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