Intelligent box-type substation ventilation system

Abstract

The invention discloses an intelligent box-type transformer substation ventilation system, which relates to the field of intelligent box-type transformer substation ventilation and comprises a data acquisition module, a transformer substation external analysis module, a transformer substation function room analysis module, an environment grade analysis module, a ventilation system matching module, a ventilation verification early warning module, a display terminal and a database. Through analysis of collected external environment parameters of the box-type substation, functional room index parameters of the box-type substation and functional room internal environment parameters, a first-stage ventilation demand set, a second-stage ventilation demand set, a third-stage ventilation demand set, a fourth-stage ventilation demand set and ventilation system adjustment measures corresponding to the ventilation demand sets are obtained; and statistical analysis is carried out on performance related parameters of the function room equipment to obtain a ventilation system adjustment feedback signal, so that adjustment of the ventilation system by various factors can be comprehensively considered, the operation cost of a transformer substation is saved, the failure rate of the equipment is reduced, and the adjustment of the ventilation system can be verified.

Description

Technical Field

[0001] The invention relates to the field of intelligent box-type substation ventilation, and in particular to an intelligent box-type substation ventilation system. Background Art

[0002] With the continuous development of society and the continuous advancement of science and technology, the demand for electricity is increasing, and the scale of the power grid continues to increase. As an important part of the power grid, box-type substations are also growing, but the ventilation problem of box-type substations has also emerged. How to solve the ventilation problem is also an important topic of concern in the current development of the power grid. Intelligent box-type substation ventilation system came into being.

[0003] When operating, the traditional intelligent box-type substation ventilation system cannot take into account the changes in external factors of the substation, the changes in the different characteristics of the functional rooms of the substation, and the working environment factors of the functional rooms of the substation. It is unable to adjust the ventilation system according to special situations, resulting in a large waste of resources and increasing the failure of box-type substation equipment.

[0004] The traditional intelligent box-type substation ventilation system is unable to monitor and evaluate the operating ventilation system during operation, resulting in the operators being unable to detect abnormal conditions in time, further aggravating the occurrence of box-type substation equipment operation failures.

[0005] In order to solve the above defects, a technical solution is now provided. Summary of the invention

[0006] In order to solve the technical problems raised by the above background technology, the present invention is proposed. An embodiment of the present invention provides an intelligent box-type substation ventilation system.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] An intelligent box-type substation ventilation system comprises a data acquisition module, a substation external analysis module, a substation functional room analysis module, an environmental level analysis module, a ventilation system matching module, a ventilation verification and early warning module, a display terminal and a database.

[0009] The substation external analysis module is used to receive the external environmental parameters of the box-type substation, analyze and determine them, obtain the initial value of the external environment of the box-type substation, and send it to the environmental level analysis module;

[0010] The substation function room analysis module is used to receive the indicator parameters of the box-type substation function room, and make a judgment analysis to obtain the additional value of the box-type substation function room, and send it to the environment level analysis module;

[0011] The environmental level analysis module is used to receive the functional indoor environmental parameters, analyze and count them, and obtain the additional value of the functional indoor environment; and to determine and analyze the initial value of the external environment of the box-type substation, the additional value of the functional room of the box-type substation, and the additional value of the functional indoor environment, to obtain a ventilation demand set, and send it to the ventilation system matching module;

[0012] The ventilation system matching module is used to receive a ventilation demand set, and make a determination and analysis on the received ventilation demand set;

[0013] The ventilation verification and early warning module is used to analyze the performance-related parameters of the received functional room equipment after the ventilation system is adjusted, and to perform statistical analysis on the performance-related parameters of the functional room equipment.

[0014] Furthermore, the specific analysis method for the initial assignment of the external environment of the box-type substation is as follows:

[0015] Get the highest and lowest temperatures of each day in the year in the area where the box-type substation is located, with time as the horizontal axis and the highest and lowest temperatures of each day as the vertical axis. Draw points in the same coordinate system and connect them with curves. Connect the lowest and highest values ​​of the starting point, and connect the lowest and highest values ​​of the end point. Measure the area value of the closed area formed, marked as ZS, and extract the peak parameters of the highest and lowest peaks in the coordinate graph. The peak parameters include peak height, peak area and peak width, which are recorded as FG, FM and FK respectively. According to the set formula The temperature characteristic value WT corresponding to the temperature peak is obtained. a1, a2 and a3 are respectively represented as the set influencing factors, and their sizes are custom settings. The temperature characteristic value is compared and analyzed with the set temperature characteristic value interval. When the temperature characteristic value is greater than the maximum value of the set temperature characteristic value interval, it corresponds to a high temperature peak. When the temperature characteristic value is within the set temperature characteristic value interval, it corresponds to a medium temperature peak. When the temperature characteristic value is less than the minimum value of the set temperature characteristic value interval, it corresponds to a low temperature peak. The number of the highest value of the high temperature peak, medium temperature peak and low temperature peak is counted respectively, marked as GGS, GZS and GDS, and the number of the lowest value of the high temperature peak, medium temperature peak and low temperature peak is counted respectively, marked as DGS, DZS and DDS. According to the set formula The temperature index XBW of the box-type substation area is obtained, and b1, b2, b3, b4 and b5 are respectively represented as the set influencing factors;

[0016] Draw a circle with a certain distance from the location of the box-type substation as the center. The specific certain distance can be 10m or 20m. Obtain the number ZS and obstacle height ZG of all obstacles in the circle. Specific obstacles can be buildings, large trees, etc. Normalize the number ZS and obstacle height ZG and substitute them into the set formula Get the physical influence coefficient WY of the box-type substation, c1 and c2 are respectively represented as the set influence factors; get the number of wind direction changes within a period of time at the location of the box-type substation, the specific period of time can be one month, the number of wind direction changes is divided by the corresponding period of time to get the wind direction change frequency value, get the wind speed within a period of time, take the difference between the maximum wind speed and the minimum wind speed, get the extreme value of the wind speed, weight the wind direction change frequency value and the wind speed extreme value, and multiply them by the corresponding proportional factor to get the wind change value FZ of the box-type substation; get the air quality index within a period of time at the location of the box-type substation, and compare it with the set air quality index. When the air quality index is greater than the set air quality index, it is a high-quality air quality period. When the air quality index is equal to the set air quality index, it is a qualified air quality period. Get the interval length of adjacent high-quality air quality periods and the interval length of adjacent qualified air quality periods, and statistically sum them respectively to get the total interval length of the high-quality period and the total interval length of the qualified period. Weighted calculation, and multiply by the corresponding proportional factor, get the air quality isolation value KG of the box-type substation;

[0017] The values ​​corresponding to the physical influence coefficient WY of the box-type substation, the wind change value FZ of the box-type substation and the air optimal isolation value KG of the box-type substation are converted into lengths according to a certain ratio; a frustum is constructed with the lengths of the physical influence coefficient WY of the box-type substation, the wind change value FZ of the box-type substation and the air optimal isolation value KG of the box-type substation as the bottom circle diameter, the diameter of the equal circle of the frustum and the height of the frustum respectively; the values ​​corresponding to the temperature index XBW of the box-type substation area are converted into lengths according to a certain ratio, and a sphere is constructed with the length of the temperature index XBW of the box-type substation area as the radius, and the center of the sphere coincides with the center of the circle on the top surface of the frustum; the volume of the abnormal frustum sphere that does not overlap is extracted and marked as the abnormal value of the external environment of the box-type substation;

[0018] A first reference threshold DZ1 of the abnormal value of the external environment of the box-type substation is set, and the abnormal value of the external environment of each box-type substation is compared and analyzed with the preset first reference threshold DZ1; when the abnormal value of the external environment of the box-type substation is less than the preset first reference threshold DZ1, the initial value of the external environment of the corresponding box-type substation is X1 points; when the abnormal value of the external environment of the box-type substation is equal to the preset first reference threshold DZ1, the initial value of the external environment of the corresponding box-type substation is X2 points; when the abnormal value of the external environment of the box-type substation is greater than the preset first reference threshold DZ1, the initial value of the external environment of the corresponding box-type substation is X3 points, where X3≥X2≥X1.

[0019] Furthermore, the specific analysis method for additional assignment of the functional room of the box-type substation is as follows:

[0020] Obtain the load of the equipment in the functional room of the box-type substation within a period of time, and obtain the value of the equipment load exceeding the design ratio in the functional room, which is calculated as FZ;

[0021] The temperature value of each device in the functional room is monitored by temperature sensors, and the temperature abnormality value WZ is obtained by analysis;

[0022] The device temperature anomaly value is mapped to the time coordinate system, and compared with the set device temperature anomaly value interval. When the device temperature anomaly value is greater than the maximum value of the device temperature anomaly value interval, it corresponds to a first-level temperature anomaly. When the device temperature anomaly value is within the device temperature anomaly value interval, it corresponds to a second-level temperature anomaly. When the device temperature anomaly value is less than the minimum value of the device temperature anomaly value interval, it corresponds to a third-level temperature anomaly. The interval duration of the first-level temperature anomaly and the interval duration of the second-level temperature anomaly are obtained, and the total interval duration YJ of the first-level temperature anomaly and the total interval duration EJ of the second-level temperature anomaly are obtained by statistical summation. The time lengths of the first-level temperature anomaly, the second-level temperature anomaly and the third-level temperature anomaly are obtained, which are counted as YY, EY and SY respectively. According to the set formula The equipment temperature aging coefficient WL is obtained, where e4 and e5 are preset weight factors, and σ is a preset correction factor;

[0023] The temperature anomaly value WZ and the equipment temperature aging coefficient WL are analyzed to obtain the equipment deviation index value SP;

[0024] Obtain the reference interval of the equipment deviation index value, and obtain the functional room equipment deviation value GPY through statistical analysis;

[0025] Obtain the total space size VG of each functional room of the box-type substation and the total volume VS occupied by the equipment in each functional room, and calculate the spatial characteristic value GK of each functional room;

[0026] Obtain the total number of personnel and acquisition times of each functional room of the box-type substation within one month, and obtain the functional room personnel activity coefficient GHX;

[0027] The function room index value of the box-type substation is obtained by statistically analyzing the equipment load over-design ratio FZ of the function room, the personnel activity coefficient GHX of the function room, the equipment deviation value GPY of the function room and the spatial characteristic value GK of each function room;

[0028] A second reference threshold DZ2 is set for the indicator value of the box-type substation function room, and the indicator value of each box-type substation function room is compared and analyzed with the preset first reference threshold DZ2; when the indicator value of the box-type substation function room is less than the preset second reference threshold DZ2, the corresponding box-type substation function room is additionally assigned a value of Y1 points; when the indicator value of the box-type substation function room is equal to the preset second reference threshold DZ2, the corresponding box-type substation function room is additionally assigned a value of Y2 points; when the indicator value of the box-type substation function room is greater than the preset second reference threshold DZ2, the corresponding box-type substation function room is additionally assigned a value of Y3 points, where Y3≥Y2≥Y1.

[0029] Furthermore, the specific analysis method for additional assignment of functional indoor environment is as follows:

[0030] The temperature, humidity and gas concentration in the functional room are monitored and analyzed to obtain the reference bias value; the dust concentration in the functional room is measured by light scattering method to obtain the gray value; the reference bias value and gray value are converted into numerical values ​​according to a certain ratio, and the length of the reference bias value and gray value are used as the base and height of the parallelogram to construct a parallelogram, and the perimeter of the parallelogram is extracted as the functional room environment state value GHY;

[0031] A third reference threshold DZ3 is set for the functional indoor environmental status value, and each functional indoor environmental status value is compared and analyzed with the preset third reference threshold DZ3; when the functional indoor environmental status value is less than the preset third reference threshold DZ3, the corresponding functional indoor environment is additionally assigned a value of Z1 points; when the external environmental abnormality value of the box-type substation is equal to the preset third reference threshold DZ3, the functional indoor environment is additionally assigned a value of Z2 points; when the functional indoor environmental status value is greater than the preset third reference threshold DZ3, the corresponding functional indoor environment is additionally assigned a value of Z3 points, where Z3≥Z2≥Z1.

[0032] Furthermore, the specific analysis method of the ventilation demand set is as follows:

[0033] The score values ​​of the external environment data items of each box-type substation, the score values ​​of the indicator value data items of the box-type substation function room and the score values ​​of the function room environment status data items are added to obtain the total score value of each box-type substation function room. The function rooms of each box-type substation are graded according to the total score value. When the total score value is X3+Y3+Z3 or X2+Y3+Z3 or X3+Y2+Z3 or X3+Y3+Z2, the corresponding substation function room is divided into the first-level ventilation demand set A1. When the total score value is X2+Y2+X2 or X1+ When the total score is X2+Y1+Z1 or X1+Y2+Z1 or X1+Y1+Z2, the corresponding substation function room is divided into the second-level ventilation demand set A2; when the total score is X2+Y1+Z1 or X1+Y2+Z1 or X1+Y1+Z2, the corresponding substation function room is divided into the third-level ventilation demand set A3; when the total score is X1+Y1+Z1, the corresponding substation function room is divided into the fourth-level ventilation demand set A4;

[0034] The obtained first-level ventilation demand set A1, second-level ventilation demand set A2, third-level ventilation demand set A3 and fourth-level ventilation demand set A4 are sent to the ventilation system matching module.

[0035] Furthermore, the specific analysis method of the ventilation demand set determination analysis is as follows:

[0036] If the substation function room is in the fourth-level ventilation demand set A4, the ventilation system will adjust the natural ventilation accordingly and set air inlets and outlets; if the substation function room is in the third-level ventilation demand set A3, the ventilation system will adjust the mechanical ventilation accordingly; if the substation function room is in the second-level ventilation demand set A2, the ventilation system will adjust the intelligent ventilation accordingly, and there will be n1 gears corresponding to it; if the substation function room is in the first-level ventilation demand set A1, the ventilation system will adjust the intelligent ventilation accordingly, and there will be n2 gears corresponding to it, where n2≥n1.

[0037] Furthermore, the specific analysis method for the statistical analysis of the parameters related to the performance of the functional room equipment is as follows:

[0038] The noise abnormality value ZY is obtained by analyzing the noise value, and the equipment abnormality value SY is obtained by analyzing it and the equipment failure rate SG.

[0039] Compare and analyze the equipment abnormality value with the set comparison threshold value YY1. When the equipment abnormality value is greater than the set comparison threshold value YY1, a ventilation system adjustment negative feedback signal is generated. Conversely, when the equipment abnormality value is less than or equal to the set comparison threshold value YY1, a ventilation system adjustment positive feedback signal is generated.

[0040] When the ventilation system adjusts the positive feedback signal, it is sent to the display terminal for display in the form of a text description of "the box-type substation has been well ventilated";

[0041] When the ventilation system adjusts the negative feedback signal, it is sent to the display terminal for display in the form of a text description of "the box-type substation is not well ventilated".

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] 1. The present invention receives and collects external environmental parameters of the box-type substation, index parameters of the box-type substation functional room and environmental parameters of the functional room, and makes judgments and analyses thereof to obtain a first-level ventilation demand set, a second-level ventilation demand set, a third-level ventilation demand set, a fourth-level ventilation demand set and ventilation system adjustment measures corresponding to the ventilation demand set. The present invention takes into account changes in external factors of the substation, changes in different characteristics of each functional room of the substation and environmental factors of working in each functional room of the substation. It can adjust ventilation for special situations, reduce waste of resources, reduce equipment failures of the box-type substation, and save the operating cost of the substation.

[0044] 2. The present invention obtains equipment abnormality values ​​by statistical analysis of parameters related to the performance of functional room equipment, and compares and analyzes the equipment abnormality values ​​with the set comparison thresholds to obtain ventilation system adjustment feedback signals. The operating ventilation system can be monitored and evaluated, and abnormal conditions can be detected in time, which further reduces the occurrence of equipment operation failures in box-type substations and provides a solid foundation for the normal operation of box-type substations. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. The following drawings are not intentionally scaled to the actual size, and the focus is on illustrating the main purpose of the present invention.

[0046] Figure 1 is a system block diagram of the present invention;

[0047] Figure 2 It is the temperature change curve;

[0048] Figure 3 This is the temperature change diagram of the equipment. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present invention.

[0050] like Figure 1 As shown, an intelligent box-type substation ventilation system includes a data acquisition module, a substation external analysis module, a substation functional room analysis module, an environmental level analysis module, a ventilation system matching module, a ventilation verification and early warning module, a display terminal and a database.

[0051] The data acquisition module is used to collect the external environmental parameters of the box-type substation, the indicator parameters of the box-type substation function room, the internal environmental parameters of the function room and the parameters related to the performance of the equipment in the function room, and send them to the external analysis module of the substation, the analysis module of the substation function room, the environmental level analysis module and the ventilation verification and early warning module. The external environmental parameters of the box-type substation collected include the highest and lowest temperatures of each day in the year in the area where the box-type substation is located, the number of obstacles and the height of obstacles; the indicator parameters of the function room of the box-type substation include the load of the equipment in the function room of the box-type substation, the temperature value of each equipment in the function room monitored by the temperature sensor, the total space size VG of each function room of the box-type substation and the total volume occupied by the equipment in each function room; the environmental parameters of the function room include the temperature, humidity and gas concentration in the function room; the parameters related to the performance of the equipment in the function room include the equipment noise value and the number of failures of the equipment in the function room of the substation over a period of time.

[0052] The substation external analysis module is used to receive the external environmental parameters of the box-type substation, analyze and determine them, obtain the initial value of the external environment of the box-type substation, and send it to the environmental level analysis module. The specific analysis is as follows:

[0053] Get the maximum and minimum temperature of each day in the year in the area where the box-type substation is located, such as Figure 2 As shown, with time as the horizontal axis and the daily maximum and minimum temperature as the vertical axis, points are drawn in the same coordinate system and connected with curves, connecting the minimum and maximum values ​​of the starting point, connecting the minimum and maximum values ​​of the end point, measuring the area value of the closed area formed, marked as ZS, extracting the peak parameters of the highest and lowest peaks in the coordinate diagram, where the peak parameters include peak height, peak area and peak width, recorded as FG, FM, FK respectively, according to the set formula The temperature characteristic value WT corresponding to the temperature peak is obtained. a1, a2 and a3 represent the set influencing factors, and their sizes are custom settings, with values ​​of 1.11, 1.12 and 1.14, respectively. The temperature characteristic value is compared with the set temperature characteristic value interval. When the temperature characteristic value is greater than the maximum value of the set temperature characteristic value interval, it corresponds to a high temperature peak. When the temperature characteristic value is within the set temperature characteristic value interval, it corresponds to a medium temperature peak. When the temperature characteristic value is less than the minimum value of the set temperature characteristic value interval, it corresponds to a low temperature peak. The number of the highest value of the high temperature peak, medium temperature peak and low temperature peak is counted respectively, marked as GGS, GZS and GDS, and the number of the lowest value of the high temperature peak, medium temperature peak and low temperature peak is counted respectively, marked as DGS, DZS and DDS. According to the set formula The regional temperature index XBW of the box-type substation is obtained. b1, b2, b3, b4 and b5 represent the set influencing factors, and their sizes are custom settings with values ​​of 1.1, 1.5, 1.3, 1.2 and 1.4 respectively.

[0054] Draw a circle with a certain distance from the location of the box-type substation as the center. The specific certain distance can be 10m or 20m. Obtain the number ZS and obstacle height ZG of all obstacles in the circle. Specific obstacles can be buildings, large trees, etc. Normalize the number ZS and obstacle height ZG and substitute them into the set formula Get the physical influence coefficient WY of the box-type substation, c1 and c2 are respectively represented as the set influence factors, and their sizes are custom settings, with values ​​of 1.11 and 1.15 respectively; get the number of wind direction changes within a period of time at the location of the box-type substation, the specific period of time can be one month, the number of wind direction changes is divided by the corresponding period of time to get the wind direction change frequency value, get the wind speed within a period of time, take the difference between the maximum wind speed and the minimum wind speed, get the extreme value of the wind speed, weight the wind direction change frequency value and the extreme value of the wind speed, and multiply them by the corresponding proportional factor to get the wind direction change frequency of the box-type substation. Value FZ; obtain the air quality index of the location of the box-type substation for a period of time, and compare it with the set air quality index. When the air quality index is greater than the set air quality index, it is a high-quality air quality period. When the air quality index is equal to the set air quality index, it is a qualified air quality period. Obtain the interval length of adjacent high-quality air quality periods and the interval length of adjacent qualified air quality periods, and statistically sum them respectively to obtain the total interval length of the high-quality period and the total interval length of the qualified period. Weighted calculation, and multiply by the corresponding proportional factor, to obtain the air quality isolation value KG of the box-type substation;

[0055] The values ​​corresponding to the physical influence coefficient WY of the box-type substation, the wind change value FZ of the box-type substation and the air optimal isolation value KG of the box-type substation are converted into lengths according to a certain ratio; a frustum is constructed with the lengths of the physical influence coefficient WY of the box-type substation, the wind change value FZ of the box-type substation and the air optimal isolation value KG of the box-type substation as the bottom circle diameter, the diameter of the equal circle of the frustum and the height of the frustum respectively; the values ​​corresponding to the regional temperature index XBW of the box-type substation are converted into lengths according to a certain ratio, and a sphere is constructed with the length of the regional temperature index XBW of the box-type substation as the radius, and the center of the sphere coincides with the center of the circle on the top surface of the frustum; the volume of the abnormal frustum that does not overlap is extracted and marked as the abnormal value of the external environment of the box-type substation.

[0056] A first reference threshold DZ1 of the abnormal value of the external environment of the box-type substation is set, and the abnormal value of the external environment of each box-type substation is compared and analyzed with the preset first reference threshold DZ1; when the abnormal value of the external environment of the box-type substation is less than the preset first reference threshold DZ1, the initial value of the external environment of the corresponding box-type substation is X1 points; when the abnormal value of the external environment of the box-type substation is equal to the preset first reference threshold DZ1, the initial value of the external environment of the corresponding box-type substation is X2 points; when the abnormal value of the external environment of the box-type substation is greater than the preset first reference threshold DZ1, the initial value of the external environment of the corresponding box-type substation is X3 points, where X3≥X2≥X1;

[0057] The substation function room analysis module is used to receive the indicator parameters of the box-type substation function room, and make judgments and analyses to obtain additional values ​​of the box-type substation function room, and send them to the environmental level analysis module. The specific analysis is as follows:

[0058] Obtain the load of the equipment in the functional room of the box-type substation within a period of time, divide the period of time into several sub-time periods, sort them according to the sub-time periods of the acquisition time, calculate the difference between adjacent loads, subtract the load in the latter order from the load in the former order to obtain the sub-load difference, sum the sub-load differences to obtain the sub-total load difference, count the load in the latter order that is greater than the load in the former order, and sum to obtain the sub-total high load value difference, count the load in the latter order that is less than the load in the former order, and sum to obtain the sub-total low load value difference, perform weighted calculation on the sub-total load difference, the sub-total high load value difference and the sub-total low load value difference, multiply them by the corresponding weight factors respectively, and obtain the load trend value of the equipment in the functional room of the box-type substation, compare and analyze the load trend value of the equipment with the set reference load trend value interval, count the number of equipment load trend values ​​greater than the maximum value of the set equipment load trend value interval, divide it by the total number of equipment in the functional room, and obtain the equipment load over-design ratio of the functional room, which is calculated as FZ.

[0059] The temperature value of each device in the functional room is monitored by temperature sensors, such as Figure 3 As shown, with time as the horizontal axis and temperature as the vertical axis, the temperature value corresponding to each monitoring time point is plotted on the coordinate system, recorded as Wi, i is the number of the monitoring time, i=1, 2, 3, 4..., I, I is the maximum value of the monitoring time number, connecting the maximum temperature point and the minimum temperature point in the coordinate system, and making a vertical line of the connecting line of the temperature value coordinate points corresponding to each monitoring time in the coordinate system. Take the distance between each coordinate point and the vertical line. When the coordinate point is located above the maximum and minimum values, it is recorded as the first vertical line distance CYi. When the coordinate point is located below the maximum and minimum values, it is recorded as the second vertical line distance CEi; according to the set formula The temperature anomaly value WZ is calculated; e1, e2 and are respectively set proportional coefficients, whose sizes are custom settings, and the values ​​are 3.11, 2.91 and 1.12 respectively. W1 is the reference temperature change variance of the device, W2 is the first vertical distance of the reference temperature of the device, and W3 is the second vertical distance of the reference temperature of the device. is the average value of the temperature corresponding to different monitoring times;

[0060] The device temperature anomaly value is mapped to the time coordinate system, and compared with the set device temperature anomaly value interval. When the device temperature anomaly value is greater than the maximum value of the device temperature anomaly value interval, it corresponds to a first-level temperature anomaly. When the device temperature anomaly value is within the device temperature anomaly value interval, it corresponds to a second-level temperature anomaly. When the device temperature anomaly value is less than the minimum value of the device temperature anomaly value interval, it corresponds to a third-level temperature anomaly. The interval duration of the first-level temperature anomaly and the interval duration of the second-level temperature anomaly are obtained, and the total interval duration YJ of the first-level temperature anomaly and the total interval duration EJ of the second-level temperature anomaly are obtained by statistical summation. The time lengths of the first-level temperature anomaly, the second-level temperature anomaly and the third-level temperature anomaly are obtained, which are counted as YY, EY and SY respectively. According to the set formula The equipment temperature aging coefficient WL is obtained, where e4 and e5 are preset weight factors, σ is a preset correction factor, and its size is a custom setting with values ​​of 1.1, 2.21, and 2.12 respectively.

[0061] Normalize the temperature anomaly value WZ and the equipment temperature aging coefficient WL and substitute them into the set formula The deviation index value SP of the device is obtained, where e6 and e7 are respectively set proportional coefficients, whose sizes are custom settings and the values ​​are 1.11 and 2.11 respectively;

[0062] Get the reference interval of the equipment deviation index value, count the number of equipment in each functional room that is higher than the maximum value of the reference deviation index value interval, the number of equipment in the reference deviation index value interval, and the number of equipment less than the minimum value of the reference deviation index value interval, and sum them up respectively to get the total number of equipment higher than the interval GQS, the total number of equipment in the interval WQS, and the total number of equipment lower than the interval DQS. According to the set formula The equipment deviation value GPY of the functional room is obtained, where e8 and e9 are the set proportional coefficients, and their sizes are custom settings, with values ​​of 1.21 and 8.11 respectively;

[0063] Obtain the total space size VG of each functional room of the box-type substation and the total volume VS occupied by the equipment in each functional room, according to the set formula Get the functional room equipment density value MG, obtain the distance GL of each functional room close to the external opening, and use the set formula

[0064]

[0065] The spatial characteristic value GK of each functional room is calculated, b1, b2, b3 and b4 are respectively represented as the set influencing factors, and their sizes are custom settings, and the values ​​are 1.121, 1.216, 1.421 and 1.112 respectively. Y1 and Y2 are respectively the equipment density value of the set reference functional room and the reference distance close to the external opening. d is represented as a natural constant, and its size is custom settings, specifically 1.581.

[0066] Obtain the total number of personnel and acquisition times in each functional room of the box-type substation within one month, as well as the number of personnel entering and leaving the functional room, which are respectively calculated as GRS, GHC and GJC. According to the set formula The function room personnel activity coefficient GHX is obtained, where d5 and d6 are the set weight factor coefficients, and their sizes are custom settings, with values ​​of 3.12 and 2.21 respectively. G1 and G2 represent the reference average number of personnel in the function room in one month and the number of times the reference personnel enter and exit the function room respectively. ΔGP and ΔGJC represent the reference average difference in the number of personnel in the function room in one month and the difference in the number of times the reference personnel enter and exit the function room respectively.

[0067] The values ​​corresponding to the equipment load over-design ratio FZ of the functional room, the personnel activity coefficient GHX of the functional room and the equipment deviation value GPY of the functional room are converted into lengths according to a certain ratio; the lengths of the equipment load over-design ratio FZ of the functional room, the personnel activity coefficient GHX of the functional room and the equipment deviation value GPY of the functional room are used as the lower base of the trapezoid, the upper base plate of the trapezoid and the high building trapezoid of the trapezoid respectively; the values ​​corresponding to the spatial characteristic values ​​GK of each functional room are converted into lengths according to a certain ratio, and a circle is constructed inside the trapezoid with the length of the spatial characteristic value GK of each functional room as the radius, and the center of the trapezoid coincides with the center of the circle; the area where the trapezoid and the circle do not overlap is identified and marked as the indicator value of the functional room of the box-type substation.

[0068] A second reference threshold DZ2 is set for the indicator value of the box-type substation function room, and the indicator values ​​of each box-type substation function room are compared and analyzed with the preset first reference threshold DZ2; when the indicator value of the box-type substation function room is less than the preset second reference threshold DZ2, the corresponding box-type substation function room is additionally assigned a value of Y1 points; when the indicator value of the box-type substation function room is equal to the preset second reference threshold DZ2, the corresponding box-type substation function room is additionally assigned a value of Y2 points; when the indicator value of the box-type substation function room is greater than the preset second reference threshold DZ2, the corresponding box-type substation function room is additionally assigned a value of Y3 points, where Y3≥Y2≥Y1;

[0069] The environmental level analysis module is used to receive the functional indoor environmental parameters, analyze and count them, and obtain the additional value of the functional indoor environment; and make judgments and analyses on the initial value of the external environment of the box-type substation, the additional value of the functional room of the box-type substation, and the additional value of the functional indoor environment, and obtain the ventilation demand set, and send it to the ventilation system matching module. The specific analysis is as follows:

[0070] The temperature, humidity and gas concentration in the functional room are monitored. It should be noted that the gas concentration is oxygen. The temperature, humidity and gas concentration in the functional room are displayed through a coordinate system, and a standard temperature, humidity and gas concentration straight line graph is established in the coordinate system. The three curves are respectively surrounded by the corresponding standard straight lines to calculate the area, and the reference deviation value is obtained by summing up; the dust concentration in the functional room is measured by the light scattering method, the average value of each measurement value is taken, and the average dust concentration value is subtracted from the standard dust concentration to obtain the gray value; the reference deviation value and the gray value are converted into numerical values ​​according to a certain ratio, and a parallelogram is constructed with the length of the reference deviation value and the gray value as the base and height of the parallelogram respectively, and the perimeter of the parallelogram is extracted as the functional room environment state value GHY;

[0071] A third reference threshold DZ3 of the functional indoor environment state value is set, and each functional indoor environment state value is compared and analyzed with the preset third reference threshold DZ3; when the functional indoor environment state value is less than the preset third reference threshold DZ3, the corresponding functional indoor environment is additionally assigned a value of Z1 points; when the external environmental abnormality value of the box-type substation is equal to the preset third reference threshold DZ3, the functional indoor environment is additionally assigned a value of Z2 points; when the functional indoor environment state value is greater than the preset third reference threshold DZ3, the corresponding functional indoor environment is additionally assigned a value of Z3 points, where Z3≥Z2≥Z1;

[0072] The score values ​​of the external environment data items of each box-type substation, the score values ​​of the indicator value data items of the box-type substation function room and the score values ​​of the function room environment status data items are added to obtain the total score value of each box-type substation function room. The function rooms of each box-type substation are graded according to the total score value. When the total score value is X3+Y3+Z3 or X2+Y3+Z3 or X3+Y2+Z3 or X3+Y3+Z2, the corresponding substation function room is divided into the first-level ventilation demand set A1. When the total score value is X2+Y2+X2 or X1+ When the total score is X2+Y1+Z1 or X1+Y2+Z1 or X1+Y1+Z2, the corresponding substation function room is divided into the second-level ventilation demand set A2; when the total score is X2+Y1+Z1 or X1+Y2+Z1 or X1+Y1+Z2, the corresponding substation function room is divided into the third-level ventilation demand set A3; when the total score is X1+Y1+Z1, the corresponding substation function room is divided into the fourth-level ventilation demand set A4;

[0073] The obtained first-level ventilation demand set A1, second-level ventilation demand set A2, third-level ventilation demand set A3 and fourth-level ventilation demand set A4 are sent to the ventilation system matching module;

[0074] The ventilation system matching module is used to receive a ventilation demand set and make judgments and analyses on the received ventilation demand set. The specific analysis is as follows:

[0075] If the substation function room is in the fourth-level ventilation demand set A4, the ventilation system will adjust the natural ventilation accordingly, and set the air inlet and outlet. Specifically, the air inlet is usually set at a lower position to introduce fresh cold air, and the air outlet is set at a higher position to facilitate the discharge of hot air; if the substation function room is in the third-level ventilation demand set A3, the ventilation system will adjust the mechanical ventilation accordingly. Specifically, a ventilator can be used to deliver outdoor fresh air into the box-type substation; if the substation function room is in the second-level ventilation demand set A2, the ventilation system will adjust the intelligent ventilation accordingly, and there are n1 gears corresponding to it; if the substation function room is in the first-level ventilation demand set A1, the ventilation system will adjust the intelligent ventilation accordingly, and there are n2 gears corresponding to it, where n2≥n1.

[0076] The ventilation verification and early warning module is used to analyze the performance-related parameters of the receiving functional room equipment after the ventilation system is adjusted, and to perform statistical analysis on the performance-related parameters of the functional room equipment. The specific analysis is as follows:

[0077] Taking the equipment in the substation function room as the center, measuring points are set on circles with different radii, which can be 0.5m, 1m, 5m, and 10m. Measuring points at multiple angles are evenly selected on each circle, which can be set every 30 degrees near the bottom, middle and top of the equipment. The noise value is measured by a sound level meter, and the maximum noise value on each radius is obtained. The different measurement radii are sorted from small to large, and the maximum noise value of the adjacent noise value in the front is calculated minus the maximum noise value in the back, and the noise value change value is obtained by adding them up. The maximum noise value of all measured data is obtained and subtracted from the set maximum value to obtain the noise value difference. The noise value change value and the noise value difference are weighted and calculated, and multiplied by the corresponding proportional factor to obtain the noise anomaly value ZY.

[0078] Obtain the number of failures of the substation function room equipment within a period of time, obtain the equipment failure rate SG, and normalize the noise anomaly value ZY and the equipment failure rate SG according to the set formula The device abnormal value SY is obtained, f1 and f2 are the set weight factor coefficients, and their sizes are custom settings, with values ​​of 3.012 and 3.201 respectively.

[0079] Compare and analyze the equipment abnormality value with the set comparison threshold value YY1. When the equipment abnormality value is greater than the set comparison threshold value YY1, a ventilation system adjustment negative feedback signal is generated. Conversely, when the equipment abnormality value is less than or equal to the set comparison threshold value YY1, a ventilation system adjustment positive feedback signal is generated.

[0080] When the ventilation system adjusts the positive feedback signal, it is sent to the display terminal for display in the form of a text description of "the box-type substation has been well ventilated";

[0081] When the ventilation system adjusts the negative feedback signal, it is sent to the display terminal for display in the form of a text description of "the box-type substation is not well ventilated".

[0082] The database is used to store the reference temperature variation variance of the set equipment, the reference temperature first vertical distance of the equipment, the reference temperature second vertical distance of the equipment, the equipment density value of the set reference functional room and the reference distance close to the external opening, etc.

[0083] The above is an explanation of the present invention and should not be considered as a limitation thereof. Although several exemplary embodiments of the present invention have been described, it will be readily appreciated by those skilled in the art that many modifications may be made to the exemplary embodiments without departing from the novel teachings and advantages of the present invention. Therefore, all such modifications are intended to be included within the scope of the present invention as defined in the claims. It should be understood that the above is an explanation of the present invention and should not be considered as being limited to the specific embodiments disclosed, and modifications to the disclosed embodiments and other embodiments are intended to be included within the scope of the appended claims. The present invention is defined by the claims and their equivalents.

Claims

1. An intelligent box-type substation ventilation system, including a data acquisition module, a display terminal and a database, characterized in that: Also includes: The substation external environment analysis module is used to receive the external environment parameters of the box-type substation, analyze and determine them, obtain the initial value of the external environment of the box-type substation, and send it to the environment level analysis module; The substation function room analysis module is used to receive the indicator parameters of the box-type substation function room, and make a judgment analysis to obtain the additional value of the box-type substation function room, and send it to the environment level analysis module; The environmental level analysis module is used to receive the functional indoor environmental parameters, analyze and count them, and obtain the additional value of the functional indoor environment; and to determine and analyze the initial value of the external environment of the box-type substation, the additional value of the functional room of the box-type substation, and the additional value of the functional indoor environment, to obtain the ventilation demand set, and send it to the ventilation system matching module; A ventilation system matching module is used to receive a ventilation demand set and make a determination and analysis on the received ventilation demand set; The ventilation verification and early warning module is used to analyze the performance-related parameters of the equipment in the receiving functional room after the ventilation system is adjusted, and to conduct statistical analysis on the performance-related parameters of the equipment in the functional room.

2. According to claim 1, an intelligent box-type substation ventilation system is characterized in that: The specific analysis of the initial assignment of the external environment of the box-type substation is as follows: Get the highest and lowest temperatures of each day in the year in the area where the box-type substation is located, with time as the horizontal axis and the highest and lowest temperatures of each day as the vertical axis. Draw points in the same coordinate system and connect them with curves. Connect the lowest and highest values ​​of the starting point, and connect the lowest and highest values ​​of the end point. Measure the area value of the closed area formed, marked as ZS, and extract the peak parameters of the highest and lowest peaks in the coordinate graph. The peak parameters include peak height, peak area and peak width, which are recorded as FG, FM and FK respectively. According to the set formula The temperature characteristic value WT corresponding to the temperature peak is obtained, a1, a2 and a3 are respectively represented as the set influencing factors, and the temperature characteristic value is compared and analyzed with the set temperature characteristic value interval. When the temperature characteristic value is greater than the maximum value of the set temperature characteristic value interval, it corresponds to a high temperature peak, when the temperature characteristic value is in the set temperature characteristic value interval, it corresponds to a medium temperature peak, and when the temperature characteristic value is less than the minimum value of the set temperature characteristic value interval, it corresponds to a low temperature peak. The number of the highest value of the high temperature peak, medium temperature peak and low temperature peak is counted respectively, marked as GGS, GZS and GDS, and the number of the lowest value of the high temperature peak, medium temperature peak and low temperature peak is counted respectively, marked as DGS, DZS and DDS, according to the set formula The temperature index XBW of the box-type substation area is obtained, and b1, b2, b3, b4 and b5 are respectively represented as the set influencing factors; Draw a circle with a certain distance from the location of the box-type substation as the center, obtain the number of obstacles ZS and the height of obstacles ZG in the circle, normalize the number of obstacles ZS and the height of obstacles ZG and substitute them into the set formula Get the physical influence coefficient WY of the box-type substation, c1 and c2 are respectively represented as the set influence factors; get the number of wind direction changes within a period of time at the location of the box-type substation, divide the number of wind direction changes by the corresponding period of time to get the wind direction change frequency value, get the wind speed within a period of time, take the difference between the maximum wind speed and the minimum wind speed, get the extreme value of the wind speed, weight the wind direction change frequency value and the wind speed extreme value, and multiply them by the corresponding proportional factor to get the wind change value FZ of the box-type substation; get the air quality index within a period of time at the location of the box-type substation, and compare it with the set air quality index. When the air quality index is greater than the set air quality index, it is a high-quality air quality period. When the air quality index is equal to the set air quality index, it is a qualified air quality period. Get the interval length of adjacent high-quality air quality periods and the interval length of adjacent qualified air quality periods, and statistically sum them respectively to get the total interval length of the high-quality period and the total interval length of the qualified period. Weighted calculation, and multiplication by the corresponding proportional factor, get the air quality isolation value KG of the box-type substation; The values ​​corresponding to the physical influence coefficient WY of the box-type substation, the wind change value FZ of the box-type substation and the air optimal isolation value KG of the box-type substation are converted into lengths according to a certain ratio; a frustum is constructed with the lengths of the physical influence coefficient WY of the box-type substation, the wind change value FZ of the box-type substation and the air optimal isolation value KG of the box-type substation as the bottom circle diameter, the diameter of the equal circle of the frustum and the height of the frustum respectively; the values ​​corresponding to the temperature index XBW of the box-type substation area are converted into lengths according to a certain ratio, and a sphere is constructed with the length of the temperature index XBW of the box-type substation area as the radius, and the center of the sphere coincides with the center of the circle on the top surface of the frustum; the volume of the abnormal frustum sphere that does not overlap is extracted and marked as the abnormal value of the external environment of the box-type substation; A first reference threshold DZ1 of the abnormal value of the external environment of the box-type substation is set, and the abnormal value of the external environment of each box-type substation is compared and analyzed with the preset first reference threshold DZ1; when the abnormal value of the external environment of the box-type substation is less than the preset first reference threshold DZ1, the initial value of the external environment of the corresponding box-type substation is X1 points; when the abnormal value of the external environment of the box-type substation is equal to the preset first reference threshold DZ1, the initial value of the external environment of the corresponding box-type substation is X2 points; when the abnormal value of the external environment of the box-type substation is greater than the preset first reference threshold DZ1, the initial value of the external environment of the corresponding box-type substation is X3 points, where X3≥X2≥X1.

3. The intelligent box-type substation ventilation system according to claim 1 is characterized in that: The specific analysis of the additional assignment of the functional room of the box-type substation is as follows: Obtain the load of the equipment in the functional room of the box-type substation within a period of time, and obtain the percentage of equipment load exceeding the design in the functional room, which is calculated as FZ; monitor the temperature value of each equipment in the functional room through the temperature sensor, and analyze and obtain the temperature abnormality value WZ; The device temperature anomaly value is mapped to the time coordinate system, and compared with the set device temperature anomaly value interval. When the device temperature anomaly value is greater than the maximum value of the device temperature anomaly value interval, it corresponds to a first-level temperature anomaly. When the device temperature anomaly value is within the device temperature anomaly value interval, it corresponds to a second-level temperature anomaly. When the device temperature anomaly value is less than the minimum value of the device temperature anomaly value interval, it corresponds to a third-level temperature anomaly. The interval duration of the first-level temperature anomaly and the interval duration of the second-level temperature anomaly are obtained, and the total interval duration YJ of the first-level temperature anomaly and the total interval duration EJ of the second-level temperature anomaly are obtained by statistical summation. The time lengths of the first-level temperature anomaly, the second-level temperature anomaly and the third-level temperature anomaly are obtained, which are counted as YY, EY and SY respectively. According to the set formula The equipment temperature aging coefficient WL is obtained, where e4 and e5 are preset weight factors. is the preset correction factor; The temperature anomaly value WZ and the equipment temperature aging coefficient WL are analyzed to obtain the equipment deviation index value SP; the reference interval of the equipment deviation index value is obtained, and the functional room equipment deviation value GPY is obtained by statistical analysis; the total space size VG of each functional room of the box-type substation and the total volume VS occupied by the equipment in each functional room are obtained, and the space characteristic value GK of each functional room is calculated; the total number of personnel and the number of acquisitions in each functional room of the box-type substation within one month are obtained, and the functional room personnel activity coefficient GHX is obtained; The function room index value of the box-type substation is obtained by statistically analyzing the equipment load over-design ratio FZ of the function room, the personnel activity coefficient GHX of the function room, the equipment deviation value GPY of the function room and the spatial characteristic value GK of each function room; A second reference threshold DZ2 is set for the indicator value of the box-type substation function room, and the indicator value of each box-type substation function room is compared and analyzed with the preset first reference threshold DZ2; when the indicator value of the box-type substation function room is less than the preset second reference threshold DZ2, the corresponding box-type substation function room is additionally assigned a value of Y1 points; when the indicator value of the box-type substation function room is equal to the preset second reference threshold DZ2, the corresponding box-type substation function room is additionally assigned a value of Y2 points; when the indicator value of the box-type substation function room is greater than the preset second reference threshold DZ2, the corresponding box-type substation function room is additionally assigned a value of Y3 points, where Y3≥Y2≥Y1.

4. The intelligent box-type substation ventilation system according to claim 1 is characterized in that: The specific analysis of the additional assignment of the functional indoor environment is as follows: The temperature, humidity and gas concentration in the functional room are monitored and analyzed to obtain the reference bias value; the dust concentration in the functional room is measured by light scattering method to obtain the gray value; the reference bias value and gray value are converted into numerical values ​​according to a certain ratio, and the length of the reference bias value and gray value are used as the base and height of the parallelogram to construct a parallelogram, and the perimeter of the parallelogram is extracted as the functional room environment state value GHY; A third reference threshold DZ3 is set for the functional indoor environmental status value, and each functional indoor environmental status value is compared and analyzed with the preset third reference threshold DZ3; when the functional indoor environmental status value is less than the preset third reference threshold DZ3, the corresponding functional indoor environment is additionally assigned a value of Z1 points; when the external environmental abnormality value of the box-type substation is equal to the preset third reference threshold DZ3, the functional indoor environment is additionally assigned a value of Z2 points; when the functional indoor environmental status value is greater than the preset third reference threshold DZ3, the corresponding functional indoor environment is additionally assigned a value of Z3 points, where Z3≥Z2≥Z1.

5. The intelligent box-type substation ventilation system according to claim 1 is characterized in that: The specific analysis of the ventilation demand set is as follows: The score values ​​of the external environment data items of each box-type substation, the score values ​​of the indicator value data items of the box-type substation function room and the score values ​​of the function room environment status data items are added to obtain the total score value of each box-type substation function room. The function rooms of each box-type substation are graded according to the total score value. When the total score value is X3+Y3+Z3 or X2+Y3+Z3 or X3+Y2+Z3 or X3+Y3+Z2, the corresponding substation function room is divided into the first-level ventilation demand set A1. When the total score value is X2+Y2+X2 or X1+ When the total score is X2+Y1+Z1 or X1+Y2+Z1 or X1+Y1+Z2, the corresponding substation function room is divided into the second-level ventilation demand set A2; when the total score is X2+Y1+Z1 or X1+Y2+Z1 or X1+Y1+Z2, the corresponding substation function room is divided into the third-level ventilation demand set A3; when the total score is X1+Y1+Z1, the corresponding substation function room is divided into the fourth-level ventilation demand set A4; The obtained first-level ventilation demand set A1, second-level ventilation demand set A2, third-level ventilation demand set A3 and fourth-level ventilation demand set A4 are sent to the ventilation system matching module.

6. The intelligent box-type substation ventilation system according to claim 1 is characterized in that: The specific analysis of the ventilation demand set determination analysis is as follows: If the substation function room is in the fourth-level ventilation demand set A4, the ventilation system will adjust the natural ventilation accordingly and set air inlets and outlets; if the substation function room is in the third-level ventilation demand set A3, the ventilation system will adjust the mechanical ventilation accordingly; if the substation function room is in the second-level ventilation demand set A2, the ventilation system will adjust the intelligent ventilation accordingly, and there will be n1 gears corresponding to it; if the substation function room is in the first-level ventilation demand set A1, the ventilation system will adjust the intelligent ventilation accordingly, and there will be n2 gears corresponding to it, where n2≥n1.

7. The intelligent box-type substation ventilation system according to claim 1 is characterized in that: The specific analysis of the statistical analysis of the parameters related to the performance of the functional room equipment is as follows: Through the noise value, the noise abnormality value ZY is analyzed, and it is analyzed with the equipment failure rate SG to obtain the equipment abnormality value SY; Compare and analyze the equipment abnormality value with the set comparison threshold value YY1. When the equipment abnormality value is greater than the set comparison threshold value YY1, a ventilation system adjustment negative feedback signal is generated. Conversely, when the equipment abnormality value is less than or equal to the set comparison threshold value YY1, a ventilation system adjustment positive feedback signal is generated. When the ventilation system adjusts the positive feedback signal, it is sent to the display terminal for display in the form of a text description of "the box-type substation has been well ventilated"; When the ventilation system adjusts the negative feedback signal, it is sent to the display terminal for display in the form of a text description of "the box-type substation is not well ventilated".

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