CN116451513B - Method and system for adjusting and optimizing high-voltage room temperature of transformer substation - Google Patents
Method and system for adjusting and optimizing high-voltage room temperature of transformer substation Download PDFInfo
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Abstract
The invention provides a method and a system for adjusting and optimizing the temperature of a high-voltage room of a transformer substation, which comprise the steps of establishing a corresponding heat source calculation model of equipment stored in the transformer substation according to different heating principles during operation and calculating to obtain the surface temperature distribution of the equipment; carrying out correction processing on the surface temperature distribution data of each device, then taking the data as an initial boundary heat source, carrying out heat dissipation calculation, obtaining a calculated temperature value of the device, and constructing a target operator for temperature adjustment optimization; establishing an indoor three-dimensional heat dissipation model, wherein heat dissipation devices in the three-dimensional heat dissipation model can be distributed along the line in a movable way; and inputting a set number of heat dissipation devices, taking the output and/or the position of the heat dissipation devices as variables, and taking the output and the position of the heat dissipation devices with the best comprehensive heat dissipation effect under the condition of meeting a target operator as a current temperature regulation optimization scheme in the transformer substation. According to the invention, the distribution and the output of the heat dissipation device are optimized, so that the optimal heat dissipation effect under the consideration of economic factors is achieved.
Description
Technical Field
The invention belongs to the technical field of temperature control of high-voltage room of a transformer substation, and particularly relates to a method and a system for adjusting and optimizing the temperature of the high-voltage room of the transformer substation.
Background
At present, the number of indoor substations gradually becomes more and more, the indoor substation equipment is compact, the occupied area is small, but the indoor environment heat dissipation effect is poor. In order to ensure safe operation of the equipment, auxiliary heat dissipation tools such as an air conditioner or a fan are often arranged in the equipment room.
The temperature control of the indoor equipment in the transformer substation is mainly realized by radiating through an air conditioner or a fan, but the air conditioner and the fan are basically arranged at fixed positions, and if the indoor space is large, the indoor temperature difference can be obviously sensed. In addition, the temperature control technology used by some intelligent stations is also realized by collecting the temperature, starting the equipment, reducing the temperature and stopping after the return difference value is reached. However, the same problem is that the temperature measuring points are fixed, and the final adjusting effect is not very good. In addition, the simpler method is to put into the heat dissipating device for a long time, the economy is not high, the station electricity consumption proportion is high, and in addition, the effect cannot be accurately judged.
Disclosure of Invention
In view of the above, the invention aims to solve the problem that the temperature control heat dissipation method adopted by the existing transformer substation high-pressure chamber has poor effect when economic factors are considered.
In order to solve the technical problems, the invention provides the following technical scheme:
in a first aspect, the invention provides a method for adjusting and optimizing the temperature of a high-voltage room of a transformer substation, which comprises the following steps:
building a corresponding heat source calculation model according to different heating principles when the equipment stored in the transformer station room operates;
acquiring operation parameters of each device, and calculating to obtain the surface temperature distribution of the device by using a heat source calculation model;
carrying out correction processing on the surface temperature distribution data of each device so as to carry out time compensation on the hysteresis effect of temperature and heating;
taking the corrected surface temperature distribution data as an initial boundary heat source, and performing heat dissipation calculation to obtain a calculated temperature value of the equipment;
constructing a target operator for temperature adjustment optimization by using the calculated temperature values of all the devices, wherein the target operator comprises calculated temperature values corresponding to all the devices needing to be subjected to heat radiation, and the devices needing to be subjected to heat radiation are devices with corrected surface temperature distribution data larger than a set threshold value;
establishing an indoor three-dimensional heat dissipation model, wherein heat dissipation devices in the three-dimensional heat dissipation model can be distributed along the line in a movable way;
putting a set number of heat dissipation devices into the system, taking the output and/or the position of the heat dissipation devices as variables, and carrying out heat dissipation optimization calculation with the aim of meeting a target operator and improving the comprehensive heat dissipation effect of all equipment needing heat dissipation;
and taking the output and the position of the heat dissipating device with the best comprehensive heat dissipating effect under the condition of meeting the target operator as a current indoor temperature regulation optimization scheme of the transformer substation.
Further, recordIs a devicemSurface temperature distribution of>Is a devicenSurface temperature distribution of (C), subscriptjcRepresenting the type of electromagnetic induction heating,jlindicating the type of heating of the current,xandyfor the coordinates of the device(s),tthe display time is obtained by correcting the surface temperature distribution data of each device, and specifically includes:
corresponding the curve peak values of the running current curve graph and the calculated temperature curve graph, and calculating the phase differenceThe time of (2) is recorded as；
Correcting the surface temperature distribution of each device by using the calculated time difference to obtainAnd->；
If it isOr->The device is thenmOr apparatusnIs assigned a value +.>，/>Is at normal room temperature;
the surface temperature distribution after correction treatment is recorded asOr->。
Further, the calculated temperature value is calculated according to the following formula:
；
in the method, in the process of the invention,represents air density, ++>Represents the constant pressure heat capacity of air, < >>Indicating the air heat conductivity>For calculating the temperature value, < >>For air flow rate, ">Is heat dissipation power->Is boundary thermal power;
updating the surface temperature distribution of each device according to the calculated temperature value as follows:
；
in the method, in the process of the invention,and->Respectively devicesmApparatus and devicenSurface temperature distribution after correction treatment, +.>And->Respectively devicesmApparatus and devicenIs a subscript of the calculated temperature value of (a)jcRepresenting the type of electromagnetic induction heating,jlindicating the type of heating of the current,xandyfor the coordinates of the device(s),tindicate time of day->Is a time difference for performing the correction process.
Further, after a set number of heat dissipation devices are put into, heat dissipation optimization calculation is performed, specifically including:
if the number of the equipment needing to radiate does not exceed the input number of the radiating devices, fixing the positions of the radiating devices, and performing radiating optimization calculation by adjusting the output or the output of the fixed radiating devices and adjusting the positions;
if the number of the devices needing to radiate exceeds the input number of the radiating devices, radiating optimization calculation is carried out through different positions and output combinations of the radiating devices, and the total calculated times are as followsWherein, the method comprises the steps of, wherein,x1for the amount of heat dissipation device input +.>Is a unit of movement distance and is a function of the movement distance,Lfor the longest distance that can be moved, +.>Is the unit adjustable force of the device,qmaxis the maximum value of the output.
Further, the target determined when the heat dissipation optimization calculation is performed is specifically as follows:
；
in the method, in the process of the invention,for the target operator->And->Devices requiring heat dissipationmApparatus and devicenIs used for calculating the temperature value.
In a second aspect, the present invention provides a substation high-voltage room temperature regulation optimization system, comprising:
the heating calculation unit is used for storing a corresponding heat source calculation model established by equipment stored in the transformer substation room according to different heating principles during operation; acquiring operation parameters of each device, and calculating to obtain the surface temperature distribution of the device by using a heat source calculation model;
the correction unit is used for carrying out correction processing on the surface temperature distribution data of each device so as to carry out time compensation on the hysteresis effect of temperature and heating;
the temperature calculation unit is used for taking the corrected surface temperature distribution data as an initial boundary heat source, and carrying out heat dissipation calculation to obtain a calculated temperature value of the equipment;
the target operator construction unit is used for constructing a target operator for temperature adjustment and optimization by utilizing the calculated temperature values of all the devices, wherein the target operator comprises calculated temperature values corresponding to all the devices needing to be subjected to heat dissipation, and the devices needing to be subjected to heat dissipation are devices with corrected surface temperature distribution data larger than a set threshold value;
the temperature regulation optimizing unit is used for establishing an indoor three-dimensional heat dissipation model, and heat dissipation devices in the three-dimensional heat dissipation model can be distributed along the line in a movable mode; putting a set number of heat dissipation devices into the system, taking the output and/or the position of the heat dissipation devices as variables, and carrying out heat dissipation optimization calculation with the aim of meeting a target operator and improving the comprehensive heat dissipation effect of all equipment needing heat dissipation; and taking the output and the position of the heat dissipating device with the best comprehensive heat dissipating effect under the condition of meeting the target operator as a current indoor temperature regulation optimization scheme of the transformer substation.
Further, in the correction unit, it is noted thatIs a devicemSurface temperature distribution of>Is a devicenSurface temperature distribution of (C), subscriptjcRepresenting the type of electromagnetic induction heating,jlindicating the type of heating of the current,xandyfor the coordinates of the device(s),tthe display time is obtained by correcting the surface temperature distribution data of each device, and specifically includes:
operating current graph and calculated temperatureThe curve peak value of the degree curve graph corresponds, and the phase difference time is calculated and recorded as；
Correcting the surface temperature distribution of each device by using the calculated time difference to obtainAnd->；
If it isOr->The device is thenmOr apparatusnIs assigned a value +.>，/>Is at normal room temperature;
the surface temperature distribution after correction treatment is recorded asOr->。
Further, in the temperature calculation unit, the calculated temperature value is calculated according to the following formula:
；
in the method, in the process of the invention,represents air density, ++>Represents the constant pressure heat capacity of air, < >>Indicating the air heat conductivity>For calculating the temperature value, < >>For air flow rate, ">Is heat dissipation power->Is boundary thermal power;
updating the surface temperature distribution of each device according to the calculated temperature value as follows:
；
in the method, in the process of the invention,and->Respectively devicesmApparatus and devicenSurface temperature distribution after correction treatment, +.>And->Respectively devicesmApparatus and devicenIs a subscript of the calculated temperature value of (a)jcRepresenting the type of electromagnetic induction heating,jlindicating the type of heating of the current,xandyfor the coordinates of the device(s),tindicate time of day->Is a time difference for performing the correction process.
Further, in the temperature adjustment optimizing unit, after a set number of heat dissipating devices are put into the temperature adjustment optimizing unit, heat dissipating optimization calculation is performed, specifically including:
if the number of the equipment needing to radiate does not exceed the input number of the radiating devices, fixing the positions of the radiating devices, and performing radiating optimization calculation by adjusting the output or the output of the fixed radiating devices and adjusting the positions;
if the number of the devices needing to radiate exceeds the input number of the radiating devices, radiating optimization calculation is carried out through different positions and output combinations of the radiating devices, and the total calculated times are as followsWherein, the method comprises the steps of, wherein,x1for the amount of heat dissipation device input +.>Is a unit of movement distance and is a function of the movement distance,Lfor the longest distance that can be moved, +.>Is the unit adjustable force of the device,qmaxis the maximum value of the output.
Further, in the temperature adjustment optimizing unit, the target determined when the heat dissipation optimizing calculation is performed is specifically as follows:
；
in the method, in the process of the invention,for the target operator->And->Devices requiring heat dissipationmApparatus and devicenIs used for calculating the temperature value.
In summary, the invention provides a method and a system for adjusting and optimizing the temperature of a high-voltage room of a transformer substation, which comprise the steps of establishing a corresponding heat source calculation model of equipment stored in the transformer substation according to different heating principles during operation and calculating to obtain the surface temperature distribution of the equipment; carrying out correction processing on the surface temperature distribution data of each device; taking the corrected data as an initial boundary heat source, and performing heat dissipation calculation to obtain a calculated temperature value of the equipment; constructing a target operator for temperature adjustment optimization by using the calculated temperature values of the devices; establishing an indoor three-dimensional heat dissipation model, wherein heat dissipation devices in the three-dimensional heat dissipation model can be distributed along the line in a movable way; putting a set number of heat dissipation devices into the system, taking the output and/or the position of the heat dissipation devices as variables, and carrying out heat dissipation optimization calculation with the aim of meeting a target operator and improving the comprehensive heat dissipation effect of all equipment needing heat dissipation; and taking the output and the position of the heat dissipating device with the best comprehensive heat dissipating effect under the condition of meeting the target operator as a current indoor temperature regulation optimization scheme of the transformer substation. According to the invention, the distribution and the output of the heat dissipation device are optimized, so that the optimal heat dissipation effect under the consideration of economic factors is achieved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a method for adjusting and optimizing the temperature of a high-voltage room of a transformer substation according to an embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is apparent that the embodiments described below are only some embodiments of the present invention, not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, an embodiment of the present invention provides a method for adjusting and optimizing a temperature of a high-voltage room of a transformer substation, including the following steps:
s1: and building a corresponding heat source calculation model according to different heating principles when the equipment stored in the transformer substation is operated.
It will be appreciated that the equipment present in the high voltage chamber includes components such as a switch cabinet, a series reactance, a capacitor, etc., and the main factors of the heating caused by the different equipment components are not the same. Therefore, in order to determine the heating conditions of different equipment elements in the high-pressure chamber, different heat source calculation models need to be established according to different heating principles, so that the heating conditions of different equipment can be determined more accurately.
S2: and acquiring the operation parameters of each device, and calculating by using a heat source calculation model to obtain the surface temperature distribution of the device.
It should be noted that, the operation parameters used when the computing device generates heat may be real-time operation parameters of the device or predicted parameters. The operating parameters may include operating current values, voltages, power, etc.
In addition, the meteorological data of the transformer substation, such as normal room temperature, is acquired through an environment monitoring system of the transformer substation) Humidity, etc. If the external environment has a large influence on the high-pressure chamber, the external heat source can be used as an external heat source to be introduced into the following calculation process.
Furthermore, it is specifically defined according to the operating state of the device:
for example, the operating state of the equipment is maintenance, hot standby, cold standby, the current is zero, and the temperature value at this time can be considered as a normal room temperature value.
If the device is operating, the current value is substituted into the heat source calculation model for calculation.
S3: and (3) carrying out correction processing on the surface temperature distribution data of each device so as to carry out time compensation on the hysteresis effect of temperature and heating.
The hysteresis exists between the temperature data calculated from the operation data and the actual heat generation of the device. The calculated steady-state distribution value of the surface temperature, namely the temperature value calculated by the current value, is the temperature corresponding to a certain correction time by considering the hysteresis effect of the temperature value and the heat transfer of the current. Therefore, the surface temperature distribution calculated as described above needs to be corrected for time.
In addition, it is also necessary to correct the partial abnormal equipment surface temperature data.
S4: and taking the corrected surface temperature distribution data as an initial boundary heat source, and performing heat dissipation calculation to obtain a calculated temperature value of the equipment.
According to the heat radiation capability provided by the current heat radiation device, the heat radiation air flow of the heat radiation device is assumed to be laminar flow, so that the heat radiation temperature of the current equipment, namely a calculated temperature value, can be obtained.
S5: and constructing a target operator for temperature adjustment optimization by using the calculated temperature values of the devices, wherein the target operator comprises calculated temperature values corresponding to all the devices needing to be subjected to heat radiation, and the devices needing to be subjected to heat radiation are devices with the corrected surface temperature distribution data larger than a set threshold value.
It will be appreciated that the target operator is one condition that allows all devices that need to dissipate heat to meet the operating protocol temperature.
S6: and establishing an indoor three-dimensional heat dissipation model, wherein heat dissipation devices in the three-dimensional heat dissipation model are movably distributed along the line.
S7: and putting a set number of heat dissipation devices into the system, taking the output and/or the position of the heat dissipation devices as variables, and carrying out heat dissipation optimization calculation with the aim of meeting a target operator and improving the comprehensive heat dissipation effect of all equipment needing heat dissipation.
The target operator includes a calculated temperature value corresponding to each device that needs to dissipate heat, and the condition that the target operator is satisfied is that the calculated temperature value is satisfied by the requirement for each device. On the basis, in order to obtain an optimal temperature adjustment optimization scheme, namely the distribution and the output setting of the heat dissipation device, the optimal scheme is determined by combining the comprehensive heat dissipation effect of all the devices.
S8: and taking the output and the position of the heat dissipating device with the best comprehensive heat dissipating effect under the condition of meeting the target operator as a current indoor temperature regulation optimization scheme of the transformer substation.
The embodiment of the invention provides a method for adjusting and optimizing the temperature of a high-voltage room of a transformer substation, which comprises the steps of establishing a corresponding heat source calculation model of equipment stored in the transformer substation according to different heating principles during operation and calculating to obtain the surface temperature distribution of the equipment; carrying out correction processing on the surface temperature distribution data of each device; taking the corrected data as an initial boundary heat source, and performing heat dissipation calculation to obtain a calculated temperature value of the equipment; constructing a target operator for temperature adjustment optimization by using the calculated temperature values of the devices; establishing an indoor three-dimensional heat dissipation model, wherein heat dissipation devices in the three-dimensional heat dissipation model can be distributed along the line in a movable way; putting a set number of heat dissipation devices into the system, taking the output and/or the position of the heat dissipation devices as variables, and carrying out heat dissipation optimization calculation with the aim of meeting a target operator and improving the comprehensive heat dissipation effect of all equipment needing heat dissipation; and taking the output and the position of the heat dissipating device with the best comprehensive heat dissipating effect under the condition of meeting the target operator as a current indoor temperature regulation optimization scheme of the transformer substation. According to the embodiment, the distribution and the output of the heat dissipation device are optimized, so that the optimal heat dissipation effect under the consideration of economic factors is achieved.
In an alternative embodiment of the invention, the heating of the equipment in the high-voltage chamber of the transformer substation is divided into two types, namely current heating and electromagnetic induction heating.
The current heating loop conductor mainly generates joule heat, and joule heat generated by the conductor is mainly generated in a heat conduction mode, and the current heating loop conductor is specifically as follows:
；
wherein E represents the electric field strength, V represents the electric potential,indicating the current density of the current heating element, D indicating the electrical displacement,/->Indicating relative dielectric constant, +.>Indicating the vacuum dielectric constant, ">Represents conductivity, t represents time, ">Indicating the other current density of the current heating element, +.>Indicate density,/->Represents constant pressure heat capacity, k represents heat conductivity, and +.>Calculating a temperature value for the current heating element, p being the pressure, < ->G is the gravitational acceleration in SI.
Similarly, the electromagnetic induction heating element heating model:
；
wherein B represents magnetic induction intensity, H represents magnetic field intensity,indicating relative permeability->Represents vacuum permeability, A represents magnetic potential loss, < ->Indicating the current density of the electromagnetic induction heating element, +.>Indicating other current density of the electromagnetic induction heating element, +.>The temperature value is calculated for the electromagnetic induction heating element in SI.
By acquiring the operation parameters of the equipment, the temperature distribution value of the equipment can be calculated and used as the surface temperature distribution of the equipment:the surface temperature distribution of a certain m cabinets; />Is the surface of a certain n cabinets.
In another embodiment of the present invention, the operating current curve and the calculated temperature curve are utilized to calculate the phase difference time, i.e. the correction time, according to the peak value correspondence of the two curves. The corrected temperature distribution is:、/>. In addition, in order to suppress the occurrence of some abnormal data, for calculating partial valuesThen force the assignment to +.>。
The data obtained after the final correction processing are:or->。
In a further embodiment of the invention, the foregoing calculation is performedOr (b)As an initial boundary heat source, consider that the heat sink heat dissipation airflow is assumed to be laminar flow, and the temperature is calculated according to the following formula:
；
in the method, in the process of the invention,represents air density, ++>Represents the constant pressure heat capacity of air, < >>Indicating the air heat conductivity>For calculating the temperature value, < >>For air flow rate, ">Is heat dissipation power->Boundary thermal power is given in SI.
Calculated by considering the heat sinkFinally, updating the surface of the equipment according to the actual position coordinates of the equipmentThe temperature is as follows:
。
in yet another embodiment of the present invention, a method for determining an optimal distribution and force setting of a heat sink using a parameterized scan is provided. Assuming a movable distribution of heat sinks along a line (0~L); assume that x1 heat sink is put in, and the output of the heat sink is adjustable (0 to qmax). There are three options for the method of using parameterized scanning, including position scanning, force scanning and combination scanning.
When the target number is not more than x1, the single target number at least corresponds to one heat radiation device, so that the processing can be simplified. And fixing the position of the heat dissipating device at the corresponding target by adopting an output scanning method or a position scanning method, and adjusting the position of the x1 heat dissipating devices by adjusting the output of the corresponding heat dissipating device or the output of the fixed heat dissipating device. The comprehensive heat dissipation effect of the indoor equipment can obtain the output or position setting of the heat dissipation device under the current condition through different output or positions.
When the optimized target number is larger than xl, a combined scanning method is adopted. The combined scanning method is to change the output and position of the heat sink simultaneously, and each change is performed in set step length. For example, the heat sink is set to adjust each time as follows:
；
from the step length, the total calculated times can be obtained asWherein, the method comprises the steps of, wherein,x1for the amount of heat dissipation device input +.>Is a unit of movement distance and is a function of the movement distance,Lfor the longest distance that can be moved, +.>Is the unit adjustable force of the device,qmaxis the maximum value of the output.
And comparing the combination modes in sequence by calculating each combination mode, and finally selecting indoor equipment under a certain combination to meet the current requirement.
In a further embodiment of the invention, in determining the objective of the optimal thermostat optimization scheme, for a switchgear that does not exceed the threshold even without the use of a heat sink, it is not counted into the objective calculation. Otherwise, the temperature is calculatedCan be set according to the operating protocol>=40 ℃, this is listed as an optimization target parameter; constructing the target operator as follows->It means that any one of the data sets is smaller than the set value, i.e., the highest limit value. Combining the indoor total heat dissipation effect, selecting the following optimized targets:
；
i.e. the temperature of each device is lower than the set threshold value, and the sum of the temperatures of the devices is the minimum value.
The above is a detailed description of an embodiment of the high-voltage room temperature regulation optimization method for a transformer substation according to the present invention, and the following describes in detail an embodiment of the high-voltage room temperature regulation optimization system for a transformer substation according to the present invention.
The invention provides a transformer substation high-voltage room temperature adjusting and optimizing system, which comprises the following components:
the heating calculation unit is used for storing a corresponding heat source calculation model established by equipment stored in the transformer substation room according to different heating principles during operation; acquiring operation parameters of each device, and calculating to obtain the surface temperature distribution of the device by using a heat source calculation model;
the correction unit is used for carrying out correction processing on the surface temperature distribution data of each device so as to carry out time compensation on the hysteresis effect of temperature and heating;
the temperature calculation unit is used for taking the corrected surface temperature distribution data as an initial boundary heat source, and carrying out heat dissipation calculation to obtain a calculated temperature value of the equipment;
the target operator construction unit is used for constructing a target operator for temperature adjustment and optimization by utilizing the calculated temperature values of all the devices, wherein the target operator comprises calculated temperature values corresponding to all the devices needing to be subjected to heat dissipation, and the devices needing to be subjected to heat dissipation are devices with corrected surface temperature distribution data larger than a set threshold value;
the temperature regulation optimizing unit is used for establishing an indoor three-dimensional heat dissipation model, and heat dissipation devices in the three-dimensional heat dissipation model can be distributed along the line in a movable mode; putting a set number of heat dissipation devices into the system, taking the output and/or the position of the heat dissipation devices as variables, and carrying out heat dissipation optimization calculation with the aim of meeting a target operator and improving the comprehensive heat dissipation effect of all equipment needing heat dissipation; and taking the output and the position of the heat dissipating device with the best comprehensive heat dissipating effect under the condition of meeting the target operator as a current indoor temperature regulation optimization scheme of the transformer substation.
Further, in the correction unit, it is noted thatIs a devicemSurface temperature distribution of>Is a devicenSurface temperature distribution of (C), subscriptjcRepresenting the type of electromagnetic induction heating,jlindicating the type of heating of the current,xandyfor the coordinates of the device(s),tthe display time is obtained by correcting the surface temperature distribution data of each device, and specifically includes:
corresponding the curve peak values of the running current curve graph and the calculated temperature curve graph, and calculating the phase difference time, namely；
Correcting the surface temperature distribution of each device by using the calculated time difference to obtainAnd->；
If it isOr->The device is thenmOr apparatusnIs assigned a value +.>，/>Is at normal room temperature;
the surface temperature distribution after correction treatment is recorded asOr->。
Further, in the temperature calculation unit, the calculated temperature value is calculated according to the following formula:
；
in the method, in the process of the invention,represents air density, ++>Represents the constant pressure heat capacity of air, < >>Indicating the air heat conductivity>For calculating the temperature value, < >>For air flow rate, ">Is heat dissipation power->Is boundary thermal power;
updating the surface temperature distribution of each device according to the calculated temperature value as follows:
；
in the method, in the process of the invention,and->Respectively devicesmApparatus and devicenSurface temperature distribution after correction treatment, +.>And->Respectively devicesmApparatus and devicenIs a subscript of the calculated temperature value of (a)jcRepresenting the type of electromagnetic induction heating,jlindicating the type of heating of the current,xandyfor the coordinates of the device(s),tindicate time of day->Is a time difference for performing the correction process.
Further, in the temperature adjustment optimizing unit, after a set number of heat dissipating devices are put into the temperature adjustment optimizing unit, heat dissipating optimization calculation is performed, specifically including:
if the number of the equipment needing to radiate does not exceed the input number of the radiating devices, fixing the positions of the radiating devices, and performing radiating optimization calculation by adjusting the output or the output of the fixed radiating devices and adjusting the positions;
if the number of the devices needing to radiate exceeds the input number of the radiating devices, radiating optimization calculation is carried out through different positions and output combinations of the radiating devices, and the total calculated times are as followsWherein, the method comprises the steps of, wherein,x1for the amount of heat dissipation device input +.>Is a unit of movement distance and is a function of the movement distance,Lfor the longest distance that can be moved, +.>Is the unit adjustable force of the device,qmaxis the maximum value of the output.
Further, in the temperature adjustment optimizing unit, the target determined when the heat dissipation optimizing calculation is performed is specifically as follows:
；
in the method, in the process of the invention,for the target operator->And->Devices requiring heat dissipationmApparatus and devicenIs used for calculating the temperature value.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. The high-voltage room temperature adjusting and optimizing method for the transformer substation is characterized by comprising the following steps of:
building a corresponding heat source calculation model according to different heating principles when the equipment stored in the transformer station room operates;
acquiring operation parameters of each device, and calculating to obtain the surface temperature distribution of the device by using the heat source calculation model;
carrying out correction processing on the surface temperature distribution data of each device so as to carry out time compensation on the hysteresis effect of temperature and heating;
taking the corrected surface temperature distribution data as an initial boundary heat source, and performing heat dissipation calculation to obtain a calculated temperature value of the equipment;
constructing a target operator for temperature adjustment optimization by using the calculated temperature values of all the devices, wherein the target operator comprises the calculated temperature values corresponding to all the devices needing to be subjected to heat dissipation, and the devices needing to be subjected to heat dissipation are the devices with the corrected surface temperature distribution data larger than a set threshold value;
establishing an indoor three-dimensional heat dissipation model, wherein heat dissipation devices in the three-dimensional heat dissipation model are movably distributed along the line;
inputting a set number of heat dissipation devices, taking the output and the position of the heat dissipation devices as variables, and carrying out heat dissipation optimization calculation with the aim of meeting the target operator and improving the comprehensive heat dissipation effect of all equipment needing heat dissipation;
taking the output and the position of the heat dissipating device with the best comprehensive heat dissipating effect under the condition of meeting the target operator as a current indoor temperature regulation optimization scheme of the transformer substation;
recording deviceFor the surface temperature distribution of the device m, +.>For the surface temperature distribution of the device n, subscript jc represents electromagnetic induction heating type, jl represents current heating type, x and y are device coordinates, t represents time, and the correction processing is performed on the surface temperature distribution data of each device, specifically including:
corresponding the curve peak values of the running current curve graph and the calculated temperature curve graph, and calculating the phase difference time, namely；
Correcting the surface temperature distribution of each device by using the calculated time difference to obtainAndwherein if->The surface temperature distribution of the device m is assigned +.>If (if)The surface temperature profile of the device n is assigned +.>，/>Is at normal room temperature;
the surface temperature distribution of the treated device m was recorded asThe surface temperature distribution of the device n is。
2. The substation high-voltage room temperature regulation optimization method according to claim 1, wherein the calculated temperature value is calculated according to the following formula:
；
in the method, in the process of the invention,represents air density, ++>Represents the constant pressure heat capacity of air, < >>Indicating the air heat conductivity>For calculating the temperature value, < >>For air flow rate, ">Is heat dissipation power->Is boundary thermal power.
3. The method for optimizing the temperature adjustment of the high-voltage room of the transformer substation according to claim 1, wherein the heat dissipation optimization calculation is performed after a set number of heat dissipation devices are put in, specifically comprising:
if the number of the equipment needing to radiate does not exceed the input number of the radiating device, fixing the position of the radiating device, and performing radiating optimization calculation by adjusting the output or fixing the output of the radiating device and adjusting the position;
if the number of the devices needing to radiate exceeds the input number of the radiating devices, radiating optimization calculation is carried out through different positions and force combinations of the radiating devices, and the total calculated times are as followsWherein, the method comprises the steps of, wherein,x1for the amount of heat dissipation device input +.>Is a unit of movement distance and is a function of the movement distance,Lfor the longest distance that can be moved, +.>Is the unit adjustable force of the device,qmaxis the maximum value of the output.
4. The method for adjusting and optimizing the temperature of a high-voltage room of a transformer substation according to claim 1, wherein the target determined when the heat dissipation optimization calculation is performed is specifically as follows:
；
in the method, in the process of the invention,for the target operator, ++>For the calculated temperature value of the mth device of the electromagnetic induction heating type devices requiring heat dissipation, a>A calculated temperature value for an nth device in the type of current heating that requires heat dissipation.
5. A substation high-voltage room temperature conditioning optimization system, comprising:
the heating calculation unit is used for storing a corresponding heat source calculation model established by equipment stored in the transformer substation room according to different heating principles during operation; acquiring operation parameters of each device, and calculating to obtain the surface temperature distribution of the device by using the heat source calculation model;
the correction unit is used for carrying out correction processing on the surface temperature distribution data of each device so as to carry out time compensation on the hysteresis effect of temperature and heating;
the temperature calculation unit is used for taking the corrected surface temperature distribution data as an initial boundary heat source to carry out heat dissipation calculation to obtain a calculated temperature value of the equipment;
a target operator construction unit, configured to construct a target operator for performing temperature adjustment optimization by using the calculated temperature values of each device, where the target operator includes the calculated temperature values corresponding to all devices that need to perform heat dissipation, and the devices that need to perform heat dissipation are devices whose corrected surface temperature distribution data is greater than a set threshold;
the temperature regulation optimizing unit is used for establishing an indoor three-dimensional heat dissipation model, and heat dissipation devices in the three-dimensional heat dissipation model are movably distributed along the line; inputting a set number of heat dissipation devices, taking the output and/or the position of the heat dissipation devices as variables, and carrying out heat dissipation optimization calculation with the aim of meeting the target operator and improving the comprehensive heat dissipation effect of all equipment needing heat dissipation; taking the output and the position of the heat dissipating device with the best comprehensive heat dissipating effect under the condition of meeting the target operator as a current indoor temperature regulation optimization scheme of the transformer substation;
recording deviceFor the surface temperature distribution of the device m, +.>For the surface temperature distribution of the device n, subscript jc represents electromagnetic induction heating type, jl represents current heating type, x and y are device coordinates, t represents time, and the correction processing is performed on the surface temperature distribution data of each device, specifically including:
corresponding the curve peak values of the running current curve graph and the calculated temperature curve graph, and calculating the phase difference time, namely；
Correcting the surface temperature distribution of each device by using the calculated time difference to obtainAndwherein if->The surface temperature distribution of the device m is assigned +.>If (if)The surface temperature profile of the device n is assigned +.>，/>Is at normal room temperature;
the surface temperature distribution of the treated device m was recorded asThe surface temperature distribution of the device n is。
6. The substation high-voltage room temperature regulation optimization system according to claim 5, wherein in the temperature calculation unit, the calculated temperature value is calculated according to the following formula:
；
in the method, in the process of the invention,represents air density, ++>Represents the constant pressure heat capacity of air, < >>Indicating the air heat conductivity>For calculating the temperature value, < >>For air flow rate, ">Is heat dissipation power->Is boundary thermal power.
7. The high-voltage room temperature conditioning optimizing system according to claim 5, wherein in the temperature conditioning optimizing unit, heat radiation optimizing calculation is performed after a set number of the heat radiation devices are put into, specifically comprising:
if the number of the equipment needing to radiate does not exceed the input number of the radiating device, fixing the position of the radiating device, and performing radiating optimization calculation by adjusting the output or fixing the output of the radiating device and adjusting the position;
if the number of the devices needing to radiate exceeds the input number of the radiating devices, radiating optimization calculation is carried out through different positions and force combinations of the radiating devices, and the total calculated times are as followsWherein, the method comprises the steps of, wherein,x1for the amount of heat dissipation device input +.>Is a unit of movement distance and is a function of the movement distance,Lfor the longest distance that can be moved, +.>Is the unit adjustable force of the device,qmaxis the maximum value of the output.
8. The high-voltage room temperature conditioning optimizing system according to claim 5, wherein in the temperature conditioning optimizing unit, the target determined when the heat dissipation optimizing calculation is performed is specifically as follows:
；
in the method, in the process of the invention,for the target operator, ++>For the calculated temperature value of the mth device of the electromagnetic induction heating type devices requiring heat dissipation, a>A calculated temperature value for an nth device in the type of current heating that requires heat dissipation.
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