CN117080909B - Box transformer electricity-saving intelligent environmental control system - Google Patents
Box transformer electricity-saving intelligent environmental control system Download PDFInfo
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- CN117080909B CN117080909B CN202311056255.5A CN202311056255A CN117080909B CN 117080909 B CN117080909 B CN 117080909B CN 202311056255 A CN202311056255 A CN 202311056255A CN 117080909 B CN117080909 B CN 117080909B
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- 230000007613 environmental effect Effects 0.000 title claims abstract description 19
- 230000005855 radiation Effects 0.000 claims abstract description 9
- 238000001914 filtration Methods 0.000 claims description 60
- 230000017525 heat dissipation Effects 0.000 claims description 41
- 238000000034 method Methods 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 12
- 238000007791 dehumidification Methods 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 6
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 101100134058 Caenorhabditis elegans nth-1 gene Proteins 0.000 claims description 2
- 238000012163 sequencing technique Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 230000008859 change Effects 0.000 description 11
- 238000001816 cooling Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 238000004804 winding Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910018503 SF6 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005315 distribution function Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B7/00—Enclosed substations, e.g. compact substations
- H02B7/06—Distribution substations, e.g. for urban network
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention belongs to the field of environmental control, and discloses a box transformer electricity-saving intelligent environmental control system which comprises a heat radiation module, wherein the heat radiation module comprises an unpowered fan; the passive fan is arranged at the top of the box-type substation. According to the invention, the unpowered fan is arranged at the top of the box-type transformer substation, and the unpowered fan can generate air convection by utilizing the temperature difference between the inside and the outside of the box-type transformer substation, so that the heat in the box-type transformer substation is discharged to the outside. Because the unpowered fan does not need to consume electricity, when the temperature in the box-type transformer substation is lower, the unpowered fan can be used for radiating, so that the energy consumption of radiating is reduced.
Description
Technical Field
The invention relates to the field of environmental control, in particular to a box transformer power-saving intelligent environmental control system.
Background
Box-type substation, i.e. a box-type substation, is also called a preassembled substation or a preassembled substation. The transformer voltage reducing and low-voltage power distribution functions are organically combined together and are installed in a steel structure box, so that the transformer voltage reducing and low-voltage power distribution device is particularly suitable for urban power grid construction and transformation. The inside of box-type substation needs to carry out heat dissipation treatment, because high temperature leads to inside temperature to rise easily for transformer loss increases, distribution equipment components and parts ageing speed is too fast, and distribution equipment safe operation risk increases.
In the prior art, heat dissipation of a box-type substation is generally performed by air cooling or water cooling, for example, patent application No. cn201910235036. X discloses related technology. However, this patent requires power consumption in the case of cooling the box-type substation, whether by air cooling or water cooling, and this leads to excessive energy consumption for cooling, which still requires power consumption for cooling.
Disclosure of Invention
The invention aims to disclose a box transformer power-saving intelligent environmental control system, which solves the problem of how to reduce the heat dissipation energy consumption of a box-type transformer substation.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the invention provides a box transformer electricity-saving intelligent environmental control system, which comprises a heat radiation module, wherein the heat radiation module comprises an unpowered fan; the passive fan is arranged at the top of the box-type substation.
Preferably, the box-type substation comprises a transformer room, a high-voltage room and a low-voltage room;
the transformer chamber is used for placing a transformer;
the high-pressure chamber is used for placing high-pressure equipment;
The low pressure chamber is used for placing low pressure equipment.
Preferably, the passive fan is installed at the top of the transformer room and the low-pressure room.
Preferably, the transformer comprises a transformer chamber and a low-voltage chamber, and a temperature acquisition module is further included, wherein the temperature acquisition module is used for acquiring the temperature of the transformer chamber and the temperature of the low-voltage chamber.
Preferably, the heat dissipation module further comprises a heat dissipation fan and a strong exhaust fan;
the heat dissipation fan is arranged in the transformer chamber and the low-pressure chamber;
The strong exhaust fan is arranged in the transformer room and the low-pressure room.
Preferably, the system also comprises a control module,
The control module is used for controlling the opening and closing of the heat radiation fan and the strong exhaust fan respectively according to the temperature of the transformer room and the temperature of the low-pressure room.
Preferably, the system further comprises a humidity acquisition module;
the humidity acquisition module is used for acquiring the humidity of the transformer room and the humidity of the low-voltage room.
Preferably, the system further comprises a dehumidification module; the dehumidification module is used for dehumidifying the inside of the box-type transformer substation when the humidity of the transformer room and/or the humidity of the low-voltage room is greater than a set humidity threshold value.
Preferably, the system also comprises a communication module and an early warning module;
the communication module is used for uploading the temperature of the transformer room and the temperature of the low-pressure room to the early warning module;
The early warning module is used for sending an early warning prompt to operation and maintenance personnel of the box-type transformer substation when the temperature of the transformer room and/or the temperature of the low-voltage room are/is greater than a set temperature threshold value.
Preferably, the remote control module is further included;
the remote control module is used for inputting control instructions by operation and maintenance personnel of the box-type transformer substation and sending the control instructions to the communication module;
the communication module is used for receiving the control instruction sent by the remote control module and sending the control instruction to the control module;
The control module is used for controlling the strong exhaust fan according to the control instruction.
Compared with the prior art, the unpowered fan is arranged at the top of the box-type substation, and can generate air convection by utilizing the temperature difference between the inside and the outside of the box-type substation, so that heat in the box-type substation is discharged to the outside. Because the unpowered fan does not need to consume electricity, when the temperature in the box-type transformer substation is lower, the unpowered fan can be used for radiating, so that the energy consumption of radiating is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present 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 first schematic diagram of a box transformer power-saving intelligent environmental control system according to the present invention.
Fig. 2 is a second schematic diagram of a box transformer power-saving intelligent environmental control system according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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.
The invention provides an intelligent environmental control system for box transformer power saving, which is shown in an embodiment in FIG. 1, and comprises a heat dissipation module, wherein the heat dissipation module comprises an unpowered fan; the passive fan is arranged at the top of the box-type substation.
According to the embodiment, the unpowered fan is arranged at the top of the box-type substation, and the unpowered fan can generate air convection by utilizing the temperature difference between the inside and the outside of the box-type substation, so that heat in the box-type substation is discharged to the outside. Because the unpowered fan does not need to consume electricity, when the temperature in the box-type transformer substation is lower, the unpowered fan can be used for radiating, so that the energy consumption of radiating is reduced.
The unpowered fan is a device which utilizes natural wind speed in nature to push a turbine of the fan to rotate and utilizes the principle of indoor and outdoor air convection to accelerate and convert air flow in any parallel direction into air flow vertical from bottom to top so as to improve indoor ventilation effect. The fan does not use electricity, has no noise and can run for a long time. According to the natural law of air and the airflow flowing principle, the air conditioner is rationally arranged at the top of a roof, can rapidly discharge indoor hot air and dirty air, and improves indoor environment.
Preferably, the box-type substation comprises a transformer room, a high-voltage room and a low-voltage room;
the transformer chamber is used for placing a transformer;
the high-pressure chamber is used for placing high-pressure equipment;
The low pressure chamber is used for placing low pressure equipment.
Specifically, the high-voltage equipment refers to equipment with a voltage to ground greater than or equal to a certain voltage threshold (for example, 1000V), and comprises a high-voltage power distribution cabinet, wherein an isolation disconnecting link, a handcart type circuit breaker, a vacuum type circuit breaker, a sulfur hexafluoride circuit breaker, a high-voltage current transformer, a voltage transformer and the like are arranged in the power distribution cabinet.
Low voltage devices refer to devices having a voltage to ground that is less than a certain voltage threshold (e.g., 1000V).
Preferably, the passive fan is installed at the top of the transformer room and the low-pressure room.
In one embodiment, an unpowered fan is mounted on top of the transformer chamber and an unpowered fan is mounted on top of the low-pressure chamber.
The number of the unpowered fans can be set according to the sizes of the transformer chamber and the low-pressure chamber, and the larger the transformer chamber and the low-pressure chamber are, the larger the number of the unpowered fans is.
Preferably, the transformer comprises a transformer chamber and a low-voltage chamber, and a temperature acquisition module is further included, wherein the temperature acquisition module is used for acquiring the temperature of the transformer chamber and the temperature of the low-voltage chamber.
Preferably, the temperature acquisition module comprises a temperature acquisition unit, a data filtering unit and an acquisition period adjustment;
the temperature acquisition unit is used for acquiring the temperature of the transformer chamber and the temperature of the low-voltage chamber by adopting a set acquisition period;
the data filtering unit is used for performing filtering treatment on the temperature acquired by the temperature acquisition unit to acquire a filtered temperature;
the acquisition period adjusting unit is used for updating the acquisition period of the temperature acquisition unit.
Specifically, in the present invention, the same acquisition cycle is used when the temperature acquisition unit acquires the temperature of the transformer room and the temperature of the low-voltage room.
Moreover, the acquisition period is not fixed, but updated by the acquisition period adjusting unit, so that the temperature of the transformer chamber and the temperature of the low-voltage chamber can be prevented from being acquired at high frequency under the condition of small temperature change, and the electric quantity consumption of the temperature acquisition unit is further reduced. The filtering treatment is carried out, so that the influence of temperature noise on the opening and closing of the heat radiating equipment in the box-type transformer substation can be reduced, and a better energy-saving effect is achieved. Because if the obtained temperature is the wrong temperature, the heat dissipation device is turned on by mistake, and unnecessary heat dissipation power consumption is increased.
Preferably, filtering the temperature acquired by the temperature acquisition unit to obtain a filtered temperature includes:
Storing the filtered temperature of the transformer room into a sequence A according to the sequence from the early to the late when the filtering treatment is completed;
Storing the filtered temperature of the low-pressure chamber into a sequence B according to the sequence from the early to the late when the filtering treatment is finished;
When k is greater than the set number threshold,
For the kth temperature temp a,k of the transformer room obtained by the temperature obtaining unit, adopting a self-adaptive filtering algorithm to perform filtering treatment on temp a,k to obtain a filtered temperature aftemp a,k, and storing aftemp a,k into a sequence A;
And (3) filtering the temp b,k by adopting an adaptive filtering algorithm for the kth temperature temp b,k of the low-pressure chamber obtained by the temperature obtaining unit to obtain a filtered temperature aftemp b,k, and storing aftemp b,k in the sequence B.
Specifically, the filtering treatment of the invention refers to the temperature obtained by filtering before, which is beneficial to obtaining more accurate filtering results.
Preferably, when k is equal to or less than the set number threshold, the obtained temperature is not subjected to the filter processing.
Specifically, when the value of k is small, the temperature that can be referred to is small, and therefore, the present invention does not perform the filtering process.
Preferably, the number threshold may be set to 10.
Preferably, for the kth temperature temp c,k, C e { a, b }, using C to represent the sequence corresponding to temp c,k, filtering temp c,k by using an adaptive filtering algorithm, including:
If temp c,k satisfies the following inequality:
mitemp≤tempc,k≤matemp
mitemp and matemp are preset first and second filtering temperatures;
then a Kalman filtering algorithm is adopted to carry out filtering treatment on temp c,k to obtain filtered temperature aftemp c,k;
If temp c,k does not satisfy the following inequality:
mitemp≤tempc,k≤matemp
mitemp and matemp are preset first and second filtering temperatures;
then the temp c,k is filtered using the following function to obtain a filtered temperature aftemp c,k;
wherein H represents a preset positive integer, aftemp c,i represents the i-th filtered temperature contained in the sequence C, vrsa represents the temperature variance, Vrsb denotes the variance of the sequence number,
In the filtering process, according to the different values of temp c,k, different filtering algorithms are adopted to perform filtering on temp c,k, so that the accuracy of the filtering result is ensured, and meanwhile, the time required by the overall filtering process is reduced, thereby being beneficial to the heat dissipation module to perform corresponding heat dissipation on the temperature change in the box-type transformer substation more timely.
When temp c,k is smaller than the first filtering temperature or larger than the second filtering temperature, the difference between temp c,k and the filtered temperature in sequence C is too large, and at this time, the invention uses the difference between temp c,k and the filtered temperature in sequence C in sequence number and value to perform filtering processing, so as to reduce the time required for filtering while ensuring accurate filtering result, because the filtering processing process does not involve complex prediction and other processes. On the other hand, when temp c,k satisfies the above inequality, temp c,k is not different enough from the filtered temperature in sequence C, and a kalman filter algorithm with stronger filtering performance but longer filtering time is needed to perform the filtering process.
In the calculation process of aftemp c,k, in the sequence C, the farther the sequence number is different from temp c,k, the smaller the difference between the numerical value and temp c,k is, the smaller the contribution of the temperature to aftemp c,k is, so that aftemp c,k can calculate by referring to the filtered temperature close to the sequence number, and more accurate filtering results are facilitated.
Specifically, the first filtering temperature and the second filtering temperature may be 20 ℃ and 120 ℃, respectively.
Preferably, H may be 8.
Preferably, updating the acquisition period of the temperature acquisition unit includes:
The acquisition period of the temperature acquisition unit is updated with a fixed length of time interval.
Specifically, the length of the time interval may be 1 minute, 5 minutes, or the like.
Preferably, updating the acquisition period of the temperature acquisition unit with a fixed time interval includes:
For the nth time interval, [ tstr n,tendn ] is used to represent the time period corresponding to the nth time interval, tstr n and tend n respectively represent the starting time and the ending time of the nth time interval;
Acquiring elements in a filtered temperature set D n,Dn in a sequence A or a sequence B, wherein the time for completing the filtering process is in [ tstr n,tendn ], and sequencing the elements in the filtered temperature set D n,Dn according to the sequence from the early time to the late time for completing the filtering process;
Acquiring a temperature temp (D n, mi) with the minimum serial number in D n; acquiring a temperature temp (D n, ma) with the maximum sequence number in the D n; obtaining a temperature temp (D n, mid) with a serial number mid in D n; numD n represents the total number of filtered temperatures in D n;
If temp (D n,mi)>temp(Dn,mid)>temp(Dn, ma), the updated acquisition period of the temperature acquisition unit is calculated using the following function:
acqucyc n and acqucyc n-1 represent updated acquisition periods obtained for the nth and nth-1 time intervals, respectively; acqustd denotes a set period of time;
If temp (D n,mi)<temp(Dn,mid)<temp(Dn, ma), the updated acquisition period of the temperature acquisition unit is calculated using the following function:
If the magnitude relationship between temp (D n,mi)、temp(Dn, ma) and temp (D n, mid) falls outside of the above two cases, the acquisition period is kept consistent with the acquisition period obtained at the n-1 th time interval.
In the process of updating the acquisition period, the invention analyzes the change trend of the elements in the D n so as to select different functions to update the acquisition period, thereby enabling the acquisition period to change adaptively along with the change of the change trend of the elements in the D n, and being beneficial to realizing the timely monitoring of the temperature change while reducing the electricity consumption of the temperature acquisition. Specifically, when the temperature in the D n shows an increasing trend, the acquisition period is shortened, so that whether the temperature is larger than a set temperature threshold value or not is monitored more timely, the heat dissipation module is controlled to conduct heat dissipation treatment in time, and the situation that the box-type transformer substation is overheated is avoided; when the temperature in D n shows a shrinking trend, the invention can increase the acquisition period, thereby reducing the electricity consumption of temperature acquisition; while the trend of the temperature in D n is ambiguous, the present invention will keep the acquisition cycle unchanged. In addition, in the invention, the change speed of the acquisition period is related to the change degree of the temperature in D n, and the faster the temperature changes, the faster the change speed of the acquisition period is, so that the more compact change is realized, and the monitoring of the excessively high temperature and the heat dissipation are facilitated in time.
Preferably, the heat dissipation module further comprises a heat dissipation fan and a strong exhaust fan;
the heat dissipation fan is arranged in the transformer chamber and the low-pressure chamber;
The strong exhaust fan is arranged in the transformer room and the low-pressure room.
Specifically, the power of the heat radiation fan is smaller than that of the strong exhaust fan.
In one embodiment, the heat dissipation fans are installed at the bottom of the transformer, and the number of the heat dissipation fans installed at the bottom of the transformer is 3.
In one embodiment, the heat dissipation fans are installed at the side of the transformer room, and the number of the heat dissipation fans installed at the side of the transformer room is 2. The two heat dissipation fans are respectively arranged on two parallel side surfaces.
In one embodiment, the heat dissipation fans are installed at the side of the low pressure chamber, and the number of the heat dissipation fans installed at the side of the transformer chamber is 1.
In one embodiment, the forced draft fan is installed at the side of the transformer room, and the number of the heat dissipation fans installed at the side of the transformer room is 2. Two strong exhaust fans are respectively arranged on two parallel side surfaces.
In one embodiment, the strong exhaust fans are installed on the side surface of the low-pressure chamber, and the number of the heat dissipation fans installed on the side surface of the low-pressure chamber is 1.
In one embodiment, the heat sink of the high pressure chamber is mounted in the same manner as the low pressure chamber.
Preferably, as shown in fig. 2, further comprising a control module,
The control module is used for controlling the opening and closing of the heat radiation fan and the strong exhaust fan respectively according to the temperature of the transformer room and the temperature of the low-pressure room.
Specifically, the temperature of the transformer room and the temperature of the low-voltage room refer to temperatures obtained after the filtering treatment.
In one embodiment, the control module includes a dry transformer temperature controller or thermostat.
In one embodiment, the on and off of the heat dissipation fan and the forced air exhaust fan are controlled according to the temperature of the transformer room and the temperature of the low-pressure room, respectively, and the method comprises the following steps:
When the temperature of the transformer chamber is greater than a preset first temperature threshold, the control module controls a heat dissipation fan arranged on the side surface of the transformer chamber to start, and the heat dissipation fan is assisted to dissipate heat and exhaust air, so that the heat dissipation effect is further improved;
When the temperature of the low-pressure chamber is greater than a preset first temperature threshold, the control module controls a heat dissipation fan arranged on the side surface of the low-pressure chamber to start, and the heat dissipation and exhaust of the unpowered fan are assisted, so that the heat dissipation effect is further improved;
When the temperature of the transformer chamber is greater than a preset second temperature threshold value, the control module controls the strong exhaust fan arranged in the transformer chamber to start, so that the heat dissipation effect is further improved;
when the temperature of the low-pressure chamber is greater than a preset second temperature threshold value, the control module controls the strong exhaust fan arranged in the low-pressure chamber to start, so that the heat dissipation effect is further improved.
In addition, when the temperature of the low-pressure chamber is smaller than or equal to a preset first temperature threshold value, the control module controls the cooling fan in the low-pressure chamber to be closed; when the temperature of the low-pressure chamber is smaller than or equal to a preset second temperature threshold value, the control module controls the strong exhaust fan in the low-pressure chamber to be closed;
When the temperature of the transformer room is smaller than or equal to a preset first temperature threshold value, the control module controls a cooling fan in the transformer room to be closed; and when the temperature of the transformer room is smaller than or equal to a preset second temperature threshold value, the control module controls the strong exhaust fan in the transformer room to be closed.
In one embodiment, the first temperature threshold may be 30 ℃ (adjustable) and the second temperature threshold may be 60 ℃ (adjustable).
Preferably, the temperature acquisition module is further configured to acquire temperatures of the windings and the core of the transformer.
Preferably, the control module is further used for automatically turning off a heat radiation fan at the bottom of the transformer when the temperature of the winding and the iron core is lower than 80 ℃ (adjustable);
automatically opening a transformer cooling fan when the temperature of the winding and the iron core is more than 100 ℃ (adjustable);
when the temperature of the winding and the iron core is more than 130 ℃ (adjustable), high-temperature alarm is carried out;
And when the temperature of the winding and the iron core is higher than 150 ℃ (adjustable), the upper high-voltage circuit breaker is linked to carry out trip protection.
Preferably, the control module is further configured to automatically turn on the forced air blower when the temperature of the winding and the core exceeds 140 ℃ (adjustable).
Preferably, the system further comprises a humidity acquisition module;
the humidity acquisition module is used for acquiring the humidity of the transformer room and the humidity of the low-voltage room.
Preferably, the system further comprises a dehumidification module; the dehumidification module is used for dehumidifying the inside of the box-type transformer substation when the humidity of the transformer room and/or the humidity of the low-voltage room is greater than a set humidity threshold value.
Preferably, the system also comprises a communication module and an early warning module;
the communication module is used for uploading the temperature of the transformer room and the temperature of the low-pressure room to the early warning module;
The early warning module is used for sending an early warning prompt to operation and maintenance personnel of the box-type transformer substation when the temperature of the transformer room and/or the temperature of the low-voltage room are/is greater than a set temperature threshold value.
Specifically, the set temperature threshold may be 50 ℃.
Preferably, the remote control module is further included;
the remote control module is used for inputting control instructions by operation and maintenance personnel of the box-type transformer substation and sending the control instructions to the communication module;
the communication module is used for receiving the control instruction sent by the remote control module and sending the control instruction to the control module;
The control module is used for controlling the strong exhaust fan according to the control instruction.
Specifically, the control instruction is used for controlling the strong exhaust fans in the transformer room and the low-pressure room.
The control command may be to open the strong exhaust fan in the transformer room or the low-voltage room separately or to open the strong exhaust fan in the transformer room and the low-voltage room simultaneously.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (8)
1. The intelligent environmental control system for box transformer power saving is characterized by comprising a heat dissipation module, wherein the heat dissipation module comprises an unpowered fan; the passive fan is arranged at the top of the box-type substation;
The box-type transformer substation comprises a transformer room, a high-voltage room and a low-voltage room;
the transformer chamber is used for placing a transformer;
the high-pressure chamber is used for placing high-pressure equipment;
the low pressure chamber is used for placing low pressure equipment;
the temperature acquisition module is used for acquiring the temperature of the transformer chamber and the temperature of the low-voltage chamber;
The temperature acquisition module comprises a temperature acquisition unit, a data filtering unit and an acquisition period adjusting unit;
the temperature acquisition unit is used for acquiring the temperature of the transformer chamber and the temperature of the low-voltage chamber by adopting a set acquisition period;
the data filtering unit is used for performing filtering treatment on the temperature acquired by the temperature acquisition unit to acquire a filtered temperature;
the acquisition period adjusting unit is used for updating the acquisition period of the temperature acquisition unit;
filtering the temperature acquired by the temperature acquisition unit to obtain a filtered temperature, including:
Storing the filtered temperature of the transformer room into a sequence A according to the sequence from the early to the late when the filtering treatment is completed;
Storing the filtered temperature of the low-pressure chamber into a sequence B according to the sequence from the early to the late when the filtering treatment is finished;
When k is greater than the set number threshold,
For the kth temperature temp a, k of the transformer room obtained by the temperature obtaining unit, adopting a self-adaptive filtering algorithm to perform filtering treatment on temp a,k to obtain a filtered temperature aftemp a,k, and storing aftemp a,k into a sequence A;
For the kth temperature tempb , k of the low-pressure chamber obtained by the temperature obtaining unit, performing filtering treatment on temp b,k by adopting a self-adaptive filtering treatment algorithm to obtain a filtered temperature aftemp b,k, and storing aftemp b,k into a sequence B;
when k is smaller than or equal to a set quantity threshold, not performing filtering treatment on the obtained temperature;
For the kth temperature temp c,k, C e { a, b }, using C to represent the sequence corresponding to temp c,k, filtering temp c,k by using an adaptive filtering algorithm, including:
If temp c,k satisfies the following inequality:
mitemp≤tempc,k≤matemp
mitemp and matemp are preset first and second filtering temperatures;
then a Kalman filtering algorithm is adopted to carry out filtering treatment on temp c,k to obtain filtered temperature aftemp c,k;
If temp c,k does not satisfy the following inequality:
mitemp≤tempc,k≤matemp
mitemp and matemp are preset first and second filtering temperatures;
then the temp c,k is filtered using the following function to obtain a filtered temperature aftemp c,k;
wherein H represents a preset positive integer, aftemp c,i represents the i-th filtered temperature contained in the sequence C, vrsa represents the temperature variance, Vrsb denotes the variance of the sequence number,
Updating the acquisition period of the temperature acquisition unit includes:
updating the acquisition period of the temperature acquisition unit by adopting a time interval with a fixed length;
updating the acquisition period of the temperature acquisition unit with a fixed time interval, comprising:
For the nth time interval, [ tstr n,tendn ] is used to represent the time period corresponding to the nth time interval, tstr n and tend n respectively represent the starting time and the ending time of the nth time interval;
Acquiring elements in a filtered temperature set D n,Dn in a sequence A or a sequence B, wherein the time for completing the filtering process is in [ tstr n,tendn ], and sequencing the elements in the filtered temperature set D n,Dn according to the sequence from the early time to the late time for completing the filtering process;
Acquiring a temperature temp (D n, mi) with the minimum serial number in D n; acquiring a temperature temp (D n, ma) with the maximum sequence number in the D n; obtaining a temperature temp (D n, mid) with a serial number mid in D n; numD n represents the total number of filtered temperatures in D n;
If temp (D n,mi)>temp(Dn,mid)>temp(Dn, ma), the updated acquisition period of the temperature acquisition unit is calculated using the following function:
acqucyc n and acqucyc n-1 represent updated acquisition periods obtained for the nth and nth-1 time intervals, respectively; acqustd denotes a set period of time;
If temp (D n,mi)<temp(Dn,mid)<temp(Dn, ma), the updated acquisition period of the temperature acquisition unit is calculated using the following function:
If the magnitude relationship between temp (D n,mi)、temp(Dn, ma) and temp (D n, mid) falls outside of the above two cases, the acquisition period is kept consistent with the acquisition period obtained at the n-1 th time interval.
2. The intelligent environmental control system of a tank transformer substation of claim 1, wherein the passive fan is mounted on top of the transformer room and the low-voltage room.
3. The intelligent environmental control system of box transformer substation according to claim 1, wherein the heat dissipation module further comprises a heat dissipation fan and a forced air exhaust fan;
the heat dissipation fan is arranged in the transformer chamber and the low-pressure chamber;
The strong exhaust fan is arranged in the transformer room and the low-pressure room.
4. The intelligent environmental control system of box transformer substation according to claim 3, further comprising a control module,
The control module is used for controlling the opening and closing of the heat radiation fan and the strong exhaust fan respectively according to the temperature of the transformer room and the temperature of the low-pressure room.
5. The intelligent environmental control system of box-section power saving of claim 1, further comprising a humidity acquisition module;
the humidity acquisition module is used for acquiring the humidity of the transformer room and the humidity of the low-voltage room.
6. The intelligent environmental control system of box-section power saving of claim 1, further comprising a dehumidification module; the dehumidification module is used for dehumidifying the inside of the box-type transformer substation when the humidity of the transformer room and/or the humidity of the low-voltage room is greater than a set humidity threshold value.
7. The intelligent environmental control system for box transformer substation power saving according to claim 3, further comprising a communication module and an early warning module;
the communication module is used for uploading the temperature of the transformer room and the temperature of the low-pressure room to the early warning module;
The early warning module is used for sending an early warning prompt to operation and maintenance personnel of the box-type transformer substation when the temperature of the transformer room and/or the temperature of the low-voltage room are/is greater than a set temperature threshold value.
8. The intelligent environmental control system of box-section power saving of claim 7, further comprising a remote control module;
the remote control module is used for inputting control instructions by operation and maintenance personnel of the box-type transformer substation and sending the control instructions to the communication module;
the communication module is used for receiving the control instruction sent by the remote control module and sending the control instruction to the control module;
The control module is used for controlling the strong exhaust fan according to the control instruction.
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