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

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...

AI Technical Summary

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

Images