CN-115545968-B - Power distribution line double-electricity-rate analysis method in typhoon weather

Abstract

The invention discloses a distribution line recovery power analysis method in typhoon weather, which is technically characterized by comprising the steps of A1, S2, S3, A4 and A5, wherein the S1 is used for generating a line intensity index, the S2 is used for generating a distribution quick recovery index, the S3 is used for generating a post-rush repair evaluation coefficient according to the line intensity index, the distribution quick recovery index and the user quick recovery index, and the A5 is used for generating a 24-hour recovery power according to the line intensity index, the distribution quick recovery index and the user quick recovery index.

Inventors

• XU LI
• TAN SHUPING
• WANG XINGJIE
• ZHENG YANG
• GUO HECHUAN
• PAN RUHAI
• JIN WEI
• ZHENG SHENG
• CHEN HAIHONG
• GUO ZILI
• YANG GUANG
• LIN SHIXI
• Pan Boli
• HUANG GUANGQUN
• YANG QIAOQIAO

Assignees

• 温州电力设计有限公司
• 国网浙江省电力有限公司温州供电公司

Dates

Publication Date

20260508

Application Date

20221009

Claims (6)

1. 1. A method for analyzing the complex power rate of a distribution line in typhoon weather is characterized by comprising the following steps: step A1, generating a line strength index S1; Step A2, generating a quick recovery index S2 of the configuration change; Step A3, generating a user quick recovery index S3; step A4, generating an evaluation coefficient after rush repair according to the line strength index, the distribution change quick recovery index and the user quick recovery index; step A5, generating 24-hour complex electricity rate according to the line strength index, the configuration change quick recovery index and the user quick recovery index; the step A1 specifically comprises the following steps: taking the disaster-stricken grid as an evaluation object, and obtaining a disaster-stricken grid hundred kilometer fault rate score based on comparing the hundred kilometer line fault rate ring in the disaster-stricken grid with the average line fault rate of the disaster-stricken grid in the whole market; the calculation formula of the line strength index score is as follows: , Wherein: Line strength index score; scoring the failure rate of the disaster recovery grid for hundred kilometers; the number of disaster-stricken grids; Typhoons affect the wind ring grade correction coefficient; typhoon influence duration correction coefficients; A power supply region level correction coefficient; the step A2 specifically comprises the following steps: analyzing the maximum outage time length of distribution transformer in the grid, the average outage time length of distribution and leveling, the grid power supply reliability and the distribution transformer recovery rate indexes in different time sections during the influence period of typhoons from different dimensionalities of typhoons, strong typhoons and super typhoons; The five-point method score of the special index of the distribution transformer maximum outage duration, the distribution average outage duration, the distribution transformer power supply reliability and the distribution transformer 24-hour complex power rate is calculated according to the following formula: 、 、 、 =Percentile(Array,k), Wherein: 、 、 、 the method is characterized in that the method comprises the steps of obtaining the scores of special indexes of the maximum outage time of the distribution transformer, the average power failure time of the distribution transformer, the power supply reliability of the distribution transformer and the 24-hour complex power rate of the distribution transformer under a five-component algorithm; the Array represents a set of maximum outage duration of all disaster-stricken changes in the whole city; k is respectively set to 0.84, 0.63, 0.37 and 0.16 according to the company trade company standard; the step A3 specifically comprises the following steps: By means of marketing HPLC terminals, a data monitoring and analyzing function is enhanced, indexes of fault rate, maximum outage duration of a user and average outage duration of the user are constructed through information acquisition of the low-voltage meter, the strength index of low-voltage equipment in a grid and the quick response capability of an equipment operation and maintenance unit are checked, and then the value of the 24-hour complex electricity rate of the user is corrected; the five-point method score of the special index of the maximum user outage duration, the average user outage duration, the user power supply reliability and the user failure rate is calculated according to the following formula: 、 、 、 =Percentile(Array,k), Wherein: 、 、 、 The method is characterized in that the method comprises the steps of respectively obtaining the special indexes of the maximum outage time of a user, the average outage time of the user, the power supply reliability of the user and the failure rate of the user under a five-point algorithm; The Array represents a set of maximum outage time of all disaster-stricken grid users in the whole city; k is respectively set to 0.84, 0.63, 0.37 and 0.16 according to the company trade company standard; The step A2 further comprises the following steps: the calculation formula of the rapid recovery index score of the distribution transformer is as follows: , Wherein: Assigning a quick recovery index score; assigning a maximum outage duration score to the disaster recovery grid; assigning average outage duration scores to disaster-stricken grids; the disaster-stricken grid distribution transformer power supply reliability rate scores; The disaster-stricken grid is configured to change for 24 hours to compound the power score; the number of disaster-stricken grids; Typhoons affect the wind ring grade correction coefficient; typhoon influence duration correction coefficients; A power supply region level correction coefficient; the step A3 further comprises the following steps: the user quick recovery index score calculation formula is as follows: , Wherein: the user quickly resumes the index score; The maximum outage duration score of the disaster recovery grid users; average outage duration scores of disaster recovery grid users; the power supply reliability rate of the disaster-stricken grid user is scored; The failure rate score of the disaster-stricken grid user; the number of disaster-stricken grids; Typhoons affect the wind ring grade correction coefficient; typhoon influence duration correction coefficients; And (5) correcting the power supply area level.
2. 2. The method for analyzing the complex power rate of the distribution line in typhoon weather according to claim 1, wherein the step A5 specifically comprises the following steps: b1, 24-hour complex electricity rate of the circuit is calculated as follows: , Wherein: The line is subjected to 24-hour re-electricity rate; The total number of lines with power failure not exceeding 24 hours; the total number of power failure lines; Line strength factor, wherein According to And (5) obtaining the conversion.
3. 3. The method for analyzing the complex power rate of the distribution line in typhoon weather according to claim 2, wherein the step A5 specifically comprises the following steps: b2, the complex electricity rate of the distribution transformer for 24 hours is calculated as follows: , Wherein: compounding the power change for 24 hours; the total number of the distribution transformer is not more than 24 hours after power failure; The total number of power outage distribution transformers; A rapid recovery coefficient of the distribution transformer, wherein According to And (5) obtaining the conversion.
4. 4. The method for analyzing the complex power rate of the distribution line in typhoon weather according to claim 3, wherein the step A5 specifically comprises the following steps: b3, the 24-hour complex electricity rate of the user is calculated as the following formula: , Wherein: The user 24 hours of repowering rate; the total number of users who have power failure for not more than 24 hours; Total number of power outage users; User quick recovery factor, wherein According to And (5) obtaining the conversion.
5. 5. The method for analyzing the complex power rate of the distribution line in typhoon weather according to claim 4, wherein the step A5 specifically comprises the following steps: and B4, calculating the weighted average of three indexes of the 24-hour complex power rate of the line, the 24-hour complex power rate of the distribution transformer and the 24-hour complex power rate of the user, wherein the formula is calculated as follows: , Wherein: Interval 24 hours complex rate.
6. 6. The method for analyzing the complex power rate of the distribution line in typhoon weather according to claim 1, wherein the step A4 specifically comprises the following steps: The method comprises the steps of carrying out weighted calculation on a line strength coefficient, a distribution transformer quick recovery coefficient and a user quick recovery coefficient, and distributing weighted coefficients according to disaster influence ranges, wherein the weighted coefficients of the line strength index, the distribution transformer quick recovery coefficient and the user-level power grid rush repair strategy and the difficulty level are set to be 50%, the weighted coefficient of the distribution transformer quick recovery index is set to be 30%, the weighted coefficient of the user quick recovery coefficient is set to be 20%, and a specific calculation formula of the evaluation coefficient after rush repair is as follows: , Wherein: and evaluating the coefficient after the rush repair.

Description

Power distribution line double-electricity-rate analysis method in typhoon weather Technical Field The invention relates to an analysis method, in particular to a method for analyzing the complex electricity rate of a distribution line in typhoon weather. Background Coastal areas are affected by factors such as weather, geography, hydrology and vegetation, natural disasters with strong destructive power such as mountain floods, debris flows and town waterlogging are easy to occur under strong convection weather conditions such as typhoons, and the influence on normal operation of socioeconomic performance is large. With the development of economy and society, electric power is indistinguishable from socioeconomic operation, and electric power operation data can reflect disaster conditions of a region to a great extent. The traditional blackout index, recovery rate evaluation index and power supply reliability evaluation index can only be used for post evaluation generally, cannot solve real-time situation evaluation during natural disasters, and cannot provide data support for disaster resistant deployment of enterprises and governments. Therefore, a set of complex electricity rate system which can be suitable for local requirements and reflect the self-healing and rush repair recovery efficiency of the power grid is lacking. Disclosure of Invention Aiming at the defects of the prior art, the invention aims to provide a method for analyzing the complex power rate of a distribution line in typhoon weather, which can provide evaluation basis for works in various aspects such as construction, operation maintenance, management and the like related to the disaster prevention and reduction of a power grid. In order to achieve the purpose, the invention provides the following technical scheme that the method for analyzing the complex power rate of the distribution line in typhoon weather comprises the following steps: step A1, generating a line strength index S1; Step A2, generating a quick recovery index S2 of the configuration change; Step A3, generating a user quick recovery index S3; step A4, generating an evaluation coefficient after rush repair according to the line strength index, the distribution change quick recovery index and the user quick recovery index; and step A5, generating 24-hour complex electricity rate according to the line intensity index, the distribution change quick recovery index and the user quick recovery index. In summary, the invention has the following beneficial effects that three indexes of a line firmness coefficient, a distribution quick recovery coefficient and a user quick recovery coefficient are constructed by combining important factors such as a line, a distribution transformer and a user, such as typhoon influence wind circle grade, typhoon influence duration and the like, and the quantitative analysis result of the indexes is used as a comprehensive consideration scale of 24-hour complex electricity rate of the line, the distribution transformer and the user, and the final value of the 24-hour complex electricity rate is systematically corrected by the early and late time of complex electricity time and the strength of the power supply reliability so as to be used for the construction reference of a power grid which is not afraid of typhoons in units. The disaster-stricken grid is taken as an evaluation object, the average line failure rate of the disaster-stricken grid in the whole market is compared with the line failure rate of hundreds of kilometers in the disaster-stricken grid, the influence factors except for a 24-hour complex electricity rate calculation formula are comprehensively considered by means of indexes such as 'power grid firmness index', 'equipment reliability index', and the like, the 24-hour complex electricity rate of a line is further corrected by combining with a distribution network anti-stage construction standard, and the distribution network anti-stage windproof construction reinforcing correction perfection work is developed in a targeted manner. In order to more reasonably reflect the influence of typhoons on the distribution transformer power supply reliability, indexes such as maximum outage time of distribution transformer in a grid, average outage time of distribution, grid power supply reliability, distribution transformer recovery rate in different time zones and the like are analyzed from different dimensionalities such as typhoons, strong typhoons and super typhoons. And (3) carrying out dynamic analysis and comparison on the distribution maximum outage time, the distribution average outage time, the grid power supply reliability and the distribution average recovery rate in different time sections of all the disaster-stricken grids by a five-position method (the recovery rate of the different time sections is acquired according to 9 time nodes of 2 hours, 4 hours, 6 hours, 8 hours, 10 hours, 12 hours, 16 hours, 20 hours, 24 hours and