CN-115577532-B - Method for measuring influence of regional environment erosion on service life of power transmission and distribution facilities of power grid

Abstract

The invention belongs to the technical field of power grid systems, and particularly relates to a method for determining the influence of regional environment erosion on the service life of power grid transmission and distribution facilities. According to the invention, through taking the disclosed literature data, field experiment data, asset history, scrapping certificates, target area geography, natural environment data statistics and other multidimensional data analysis as a research basis, the service life of the power transmission and distribution fixed asset is scientifically measured and analyzed, the actual level measuring and analyzing conclusion of the technical life of the power grid equipment is taken as a basic reference, and the economic life calculation and the actual scrapping age distribution statistics are taken as the evidence of the research conclusion, finally, the depreciation ages of the power grid fixed asset with the voltage grade and the type of the equipment are provided, the depreciation ages of the power grid facilities in the target area after the power grid facilities are affected by the environment can be accurately measured, and the safety maintenance of the power grid is facilitated.

Inventors

• DONG SHIBO
• YANG XIAOYONG
• LIU FUYAN
• YU MIN
• LAO YONGCHANG
• JIANG XUEBIN
• Chen Guanduo
• YING QI
• LOU BINGWU

Assignees

• 国网浙江省电力有限公司经济技术研究院

Dates

Publication Date

20260505

Application Date

20221012

Claims (6)

1. 1. The method for measuring the influence of regional environment erosion on the service life of power transmission and distribution facilities of a power grid is characterized by comprising the following steps of: S1, analyzing a comprehensive corrosion environment by considering the superposition of an acid rain high-humidity atmospheric environment and a marine climate environment, putting a plurality of groups of power grid facility parts into an environment simulation laboratory, simulating the 'acid rain high-humidity atmospheric environment and the marine climate environment' according to different degrees by the environment simulation laboratory, sequentially eroding power grid facilities under different time periods, recording erosion degrees, and calculating the service life distribution situation of equipment assets under different corrosion environments by combining public data and national related standard theories; S2, in order to consider thunder and lightning to add typhoon and cover the ice to superpose typical natural disaster analysis, put some parts of the electric wire netting facilities into the environment simulation laboratory, the environment simulation laboratory imitates "thunder and lightning adds typhoon and covers ice" according to different degrees, erode the electric wire netting facilities under different duration sequentially, record erosion degree, combine public data and disturbance to calculate the life and reduce the level; S3, performing pressure-driven superposition analysis by considering the operation targets of the new energy access and power supply network, putting a plurality of groups of power supply network facility parts into a laboratory, accessing the new energy and the operation targets, sequentially simulating the operation of the power supply network facility under different numbers of the new energy and the operation targets, recording the operation state, and analyzing the change trend of the influence of the service life policy; S4, taking the distribution of the power grid equipment assets, the distribution of the corrosion environment and the distribution statistics of natural disasters as comprehensive level measurement calculation parameters of a target area, and determining actual level reference values of the service life of the power grid fixed assets of the target area after the comprehensive influence of the technical service life; S5, comparing the obtained data with historical scrapping operation years of the fixed asset of the power grid, comparing the operation state before scrapping, collecting historical scrapping data of the fixed asset of the power grid in the analysis target area, using the recommended level after life influence as a comparison reference, using the economic life measuring and calculating analysis of the fixed asset of the power grid as a verification reference, calculating the economic life level of a typical fixed asset according to relevant data such as the real historical operation and maintenance cost of the power grid in the area, verifying and comparing the technical life analysis conclusion of the fixed asset of the power grid, and supporting the multi-dimensional consideration of rationality of the research conclusion; s6, taking the comprehensive influence measurement of the technical life as a suggested level analysis basis, and combining historical scrappage statistics and economic life measurement and calculation to carry out suggested level verification analysis, so as to provide comprehensive suggested levels which are obtained by combining influence statistics and comparison.
2. 2. The method for determining the influence of regional environmental corrosion on the service life of power transmission and distribution facilities of a power grid according to claim 1, wherein the acid rain high-humidity atmospheric environment and marine climate environment in the step S1 are sprayed into an environment simulation laboratory in an atomization acid adding, humidification and sea salt adding mode respectively.
3. 3. The method for determining the influence of regional environmental erosion on the life of power transmission and distribution facilities of a power grid according to claim 1, wherein the lightning typhoon and ice environment in the step S2 is operated around the power grid facilities by using wiring conductive, fans and ice making equipment, respectively.
4. 4. The method for determining the influence of regional environmental corrosion on the life of power transmission and distribution facilities of a power grid according to claim 1, wherein the new energy access and the power grid operation target pressure in the step S3 are respectively connected to the power grid facilities to be determined through a circuit shunt.
5. 5. The method for determining the influence of regional environmental erosion on the life of power transmission and distribution facilities of a power grid according to claim 1, wherein the calculation of the life reduction level in step S2 uses the following calculation formula: Age after compromise = device age { erosion intensity coefficient (device lifetime/device age. Test time) }.
6. 6. The method for determining the effect of regional environmental corrosion on the life of a power grid power transmission and distribution facility according to claim 1, wherein the condition test of the environmental simulation laboratory is a differential determination for distinguishing power grid facilities under cross-environmental regions.

Description

Method for measuring influence of regional environment erosion on service life of power transmission and distribution facilities of power grid Technical Field The invention relates to the technical field of power grid systems, in particular to a method for measuring influences of regional environment erosion on service life of power grid transmission and distribution facilities. Background The power transmission and distribution system comprises three units, namely a power substation, a power transmission unit and a power distribution unit, wherein the power substation and the power transmission and distribution unit of various voltages in the power system are used for transmitting and distributing electric energy and changing the voltage. At present, the power grid is widely paved among various areas to carry out power transmission and distribution, and power grid facilities are more and more, but the power grid is paved in areas with less people flow, such as between mountains, jungles and fields, the power grid is inevitably damaged by the influence of local environments after long-time use, such as weather, environment and access of new energy, and for the current environment, it is very necessary to accurately measure the depreciation years of fixed assets of the power grid, so that we propose a method for measuring the influence of regional environment erosion on the service life of power grid transmission and distribution facilities, and can accurately measure the depreciation years of the power grid facilities in a target area after the influence of the environment, and judge the service life of the power grid facilities. Disclosure of Invention The present invention aims to solve one of the technical problems existing in the prior art or related technologies. The technical scheme adopted by the invention is as follows: S1, analyzing comprehensive corrosion environments by considering the superposition of acid rain and high humidity atmospheric environment and marine climate environment, putting a plurality of groups of power grid facility parts into an environment simulation laboratory, simulating 'acid rain and high humidity atmospheric environment and marine climate environment' according to different degrees by the environment simulation laboratory, sequentially eroding power grid facilities under different time periods, recording erosion degrees, and calculating the service life distribution conditions of equipment assets under different corrosion environments by combining public data and national related standard theories; S2, carrying out typical natural disaster analysis by taking lightning typhoon and ice coating superposition into consideration, putting a plurality of groups of power grid facility parts into an environment simulation laboratory, simulating lightning typhoon and ice coating in the environment simulation laboratory according to different degrees, sequentially carrying out erosion on power grid facilities under different time periods, recording erosion degrees, combining public data and disturbance to calculate the service life reduction level, S3, carrying out pressure driving superposition analysis by taking new energy into consideration of a power grid fixed operation target, putting the plurality of groups of power grid facility parts into the laboratory, accessing the new energy and the operation target, sequentially simulating the operation of the power grid facilities under different numbers of new energy and the operation target, recording the operation state, analyzing the influence change trend of the service life policy, S4, taking the power grid equipment asset distribution and corrosion environment distribution and natural disaster distribution statistics as comprehensive level measurement calculation parameters of a target area, determining actual service life reference values of power grid fixed assets in the target area after the comprehensive influence of the technical life, S5, carrying out rejection statistics on the obtained data and the power grid fixed operation limit as comparison year, comparing the operation state before scrapping, collecting and analyzing historical scrapping data of the fixed asset of the power grid in the target area, taking the recommended level after life influence as a comparison reference, taking the economic life measuring and calculating analysis of the fixed asset of the power grid as a verification reference, calculating the economic life level of a typical fixed asset according to relevant data such as the real historical operation and maintenance cost of the power grid in the area, verifying and comparing the technical life analysis conclusion of the fixed asset of the power grid, and supporting the multidimensional consideration of rationality of the research conclusion. S6, taking the comprehensive influence measurement of the technical life as a suggested level analysis basis, and combining historical scrappage statist