CN-116659585-B - Power distribution room temperature and humidity monitoring method

Abstract

A temperature and humidity monitoring method for a power distribution room comprises the steps of 1, gridding a monitoring area except a power distribution cabinet in the power distribution room, assuming that the temperature and the humidity of air in each grid are uniformly distributed, 2, selecting a plurality of monitoring points which are not located on the same plane in the gridded monitoring area, detecting and recording the temperature and the humidity of the plurality of monitoring points, 3, calculating the temperature and the humidity of each grid point by an interpolation method, 4, calculating the temperature and the humidity transmission ratio of each grid point, and 5, obtaining the real-time temperature and the humidity of all the grid points in the monitoring area according to the temperature and the humidity transmission ratio of each grid point and combining real-time detection data of the monitoring points. The monitoring method can comprehensively and accurately reflect the temperature and humidity distribution condition in the power distribution room, is simple, convenient, flexible and practical, and has wide application range.

Inventors

• SONG CHENG
• XIA XIANG
• LI WENZHI
• YANG WENXING
• YAO PING

Assignees

• 国网湖北省电力有限公司孝感供电公司
• 长江大学

Dates

Publication Date

20260512

Application Date

20230613

Claims (1)

1. 1. The power distribution room temperature and humidity monitoring method is characterized by comprising the following steps of: Step 1, gridding a monitoring area except a power distribution cabinet in a power distribution room, and assuming that the air temperature and the humidity in each grid are uniformly distributed; step 2, selecting a plurality of monitoring points which are not positioned on the same plane in the meshed monitoring area, and detecting and recording the temperature and humidity of the plurality of monitoring points; Step 3, calculating the temperature and humidity of each grid point by using an interpolation method; Step4, calculating the temperature and humidity transfer ratio of each grid point; Step 5, according to the temperature and humidity transmission ratio of each grid point, combining the real-time detection data of the monitoring points to obtain the real-time temperature and humidity of all grid points in the monitoring area; in the step 2, a plurality of monitoring points are arranged on a grid of an intersecting boundary surface of the monitoring area and the power distribution cabinet; The monitoring points i are marked as M i （x i ,y i ,z i ,T i ,H i ), wherein i is 1, 2. N, n is the number of the monitoring points, n is more than or equal to 10, x i 、y i 、z i is the grid coordinates of the monitoring points i in the grid monitoring area, and T i 、H i is the temperature and the humidity of the monitoring points i; step 3 comprises the following sub-steps: 3.1 grid point j is marked as U j （x j ,y j ,z j ,T j ,H j ), and the weight D jm between the grid point j and 4 monitoring points M jm （x jm ,y jm ,z jm ,T jm ,H jm closest to the grid point j is calculated, wherein M is 1,2,3 and 4, and the weight D jm respectively represents the 4 monitoring points closest to the grid point U j , and the calculation formula is as follows: ; 3.2 normalized processing grid point j and the weights of 4 monitoring points M jm （x jm ,y jm ,z jm ,T jm ,H jm ), the calculation formula is: ; 3.3 calculating the temperature T j and the humidity H j of the grid point j, the calculation formula is as follows: , ; 3.4 calculating the temperature and humidity of all grid points in the monitoring area according to the steps 3.1 to 3.3; n monitoring points comprise n 0 constant measurement points M 0k (x 0k ,y 0k ,z 0k ,T 0k ,H 0k ) which are fixedly reserved and n 1 temporary monitoring temporary points M 1g (x 0g ,y 0g ,z 0g ,T 0g ,H 0g ), wherein n=n 0 +n 1 ,n 0 is more than or equal to 5, k is 1, 2.n 0 , g is 1, 2.n 1 ; In step 4, the temperature and humidity transfer ratio between the grid point j and each constant point M 0k (x 0k ,y 0k ,z 0k ,T 0k ,H 0k ) is calculated respectively, and the calculation formula is: , ; Wherein TR j0k is the temperature transfer ratio between the kth constant point M 0k and grid point j, k is 1, 2. N 0 ;T 0k represents the temperature of a normal point M 0k , T j represents the temperature of grid point j; HR j0k is the humidity transfer ratio between the kth constant point M 0k and the grid point j, H 0k represents the humidity of the constant point M 0k , and H j represents the humidity of the grid point j; Step 5 comprises the following sub-steps: 5.1, according to the temperature T 0k , and the humidity H 0k , detected by n 0 constant-temperature points M 0k in real time, respectively calculating the temperature T jk , and the humidity H jk , of the grid point j, wherein the calculation formula is as follows: 5.2, averaging the obtained n 0 temperatures T jk , and humidity H jk , to obtain a real-time temperature T j and humidity H j of grid point j, wherein the calculation formula is as follows: , 。

Description

Power distribution room temperature and humidity monitoring method Technical Field The invention relates to the technical field of power distribution, in particular to a power distribution room temperature and humidity monitoring method. Background As an important power supply facility, the power distribution room has an important influence on production, life and social development in its operation state. The temperature and the humidity are one of important factors affecting the performance and the service life of the power distribution room equipment, so that the real-time monitoring of the temperature and the humidity of the power distribution room is of great significance. In most cases, the power distribution cabinet is arranged on two sides of a power distribution room, the middle of the power distribution cabinet is a walkway for checking the entrance and exit of maintenance personnel, equipment in the power distribution room is numerous, the environmental conditions are complex, the temperature and humidity of the power distribution room need to be monitored so as to discover and handle abnormal conditions in time, the traditional monitoring of the temperature and humidity in the power distribution room usually only collects temperature and humidity data of a plurality of points to report, and the monitored temperature and humidity information is too single and cannot comprehensively reflect the temperature and humidity distribution condition in the power distribution room. Therefore, it is necessary to design a method for monitoring the temperature and humidity of a power distribution room to solve the above-mentioned problems. Disclosure of Invention In order to avoid the problems, the temperature and humidity monitoring method for the power distribution room is provided, the temperature and humidity distribution condition in the power distribution room can be comprehensively and accurately reflected, and the method is simple, convenient, flexible, practical and wide in application range. The invention provides a power distribution room temperature and humidity monitoring method, which comprises the following steps: Step 1, gridding a monitoring area except a power distribution cabinet in a power distribution room, and assuming that the air temperature and the humidity in each grid are uniformly distributed; step 2, selecting a plurality of monitoring points which are not positioned on the same plane in the meshed monitoring area, and detecting and recording the temperature and humidity of the plurality of monitoring points; Step 3, calculating the temperature and humidity of each grid point by using an interpolation method; Step4, calculating the temperature and humidity transfer ratio of each grid point; and 5, according to the temperature and humidity transmission ratio of each grid point, combining the real-time detection data of the monitoring points to obtain the real-time temperature and humidity of all grid points in the monitoring area. Preferably, in step 2, a plurality of monitoring points are arranged on a grid of an intersecting boundary surface of the monitoring area and the power distribution cabinet. Preferably, in step 2, the monitoring point i is denoted as M i（xi,yi,zi,Ti,Hi), wherein, the i is 1,2····n; n is the number of the monitoring points, n is more than or equal to 10, x i、yi、zi is the grid coordinates of the monitoring points i in the grid-type monitoring area, and T i、Hi is the temperature and humidity of the monitoring points i. Preferably, step 3 comprises the sub-steps of: 3.1 grid point j is marked as U j（xj,yj,zj,Tj,Hj), and the weight D jm between the grid point j and 4 monitoring points M jm（xjm,yjm,zjm,Tjm,Hjm closest to the grid point j is calculated, wherein M is 1,2,3 and 4, and the weight D jm respectively represents the 4 monitoring points closest to the grid point U j, and the calculation formula is as follows: ; If the monitoring points closest to the grid point j are more than 4, the nearest 4 points are selected. 3.2 Normalized processing grid point j and the weights of 4 monitoring points M jm（xjm,yjm,zjm,Tjm,Hjm), the calculation formula is: ; 3.3 calculating the temperature T j and the humidity H j of the grid point j, the calculation formula is as follows: , ; 3.4 the temperature and humidity of all grid points in the monitored area are calculated according to steps 3.1 to 3.3. Preferably, the n monitoring points include n 0 fixedly reserved constant point M 0k(x0k,y0k,z0k,T0k,H0k) and n 1 temporarily monitored temporary point M 1g(x0g,y0g,z0g,T0g,H0g); wherein n=n 0+n1,n0 is greater than or equal to 5, k is 1,2·n 0, g is 1,2·n 1. The constant detection point is a fixed detection point which is always reserved in the follow-up monitoring, the temporary point is an auxiliary detection point, the temperature and humidity transfer ratio is accurately ensured by the meter, the temporary point is removed after the temperature and humidity transfer rati