CN118249234B - Intelligent high-voltage complete switch equipment with environment-friendly and energy-saving functions - Google Patents
Intelligent high-voltage complete switch equipment with environment-friendly and energy-saving functions Download PDFInfo
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- CN118249234B CN118249234B CN202410677242.8A CN202410677242A CN118249234B CN 118249234 B CN118249234 B CN 118249234B CN 202410677242 A CN202410677242 A CN 202410677242A CN 118249234 B CN118249234 B CN 118249234B
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- 238000010248 power generation Methods 0.000 claims abstract description 45
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- 230000008569 process Effects 0.000 claims description 16
- 238000004458 analytical method Methods 0.000 claims description 6
- 230000005856 abnormality Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 claims description 3
- 238000007619 statistical method Methods 0.000 claims description 3
- 238000007726 management method Methods 0.000 description 10
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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
- H02B1/565—Cooling; Ventilation for cabinets
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
- H02J7/1438—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle in combination with power supplies for loads other than batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1823—Rotary generators structurally associated with turbines or similar engines
- H02K7/183—Rotary generators structurally associated with turbines or similar engines wherein the turbine is a wind turbine
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- Engineering & Computer Science (AREA)
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- Sustainable Energy (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses intelligent high-voltage complete switch equipment with an environment-friendly and energy-saving function, which comprises a shell and a high-voltage complete switch equipment body arranged in the shell; the device also comprises an L-shaped bracket which is arranged at one side of the shell; and the exhaust fan is arranged on one side of the side end surface of the shell close to the L-shaped bracket and used for blowing out hot air in the shell to realize heat dissipation. According to the intelligent power-off control system, the power generation fan blades are arranged at the exhaust lower opening of the exhaust fan, so that the power generation fan blades can rotate to generate power through wind exhausted by the exhaust fan and store electric energy, when hidden danger that intelligent power-off cannot be achieved exists in the high-voltage complete switch equipment, the intelligent storage battery is controlled to output direct current through the battery management system in the intelligent storage battery, the direct current is converted into alternating current through the inverter, sufficient power is provided for the high-voltage complete switch equipment body, intelligent power-off cannot be achieved due to insufficient power supply of the high-voltage complete switch equipment, and dangerous accidents are avoided.
Description
Technical Field
The invention relates to the technical field of intelligent high-voltage complete sets of switches, in particular to intelligent high-voltage complete sets of switch equipment with environment-friendly and energy-saving functions.
Background
High voltage plants refer to indoor and outdoor ac switching equipment operating in power systems at frequencies of 50Hz and below at voltages of 3kV and above. The method is mainly used for controlling and protecting the power system, and can not only put a part of power equipment or circuits into or out of operation according to the operation requirement of the power grid, but also rapidly cut off the fault part from the power grid when the power equipment or circuits are in fault, thereby ensuring the normal operation of the fault-free part in the power grid and the safety of equipment and operation maintenance personnel. Therefore, the high-voltage complete equipment is very important power transmission and distribution equipment, and the safe and reliable operation of the high-voltage complete equipment has very important significance for the safe and effective operation of a power system.
The high-voltage complete switch equipment in the prior art has the following defects:
The hot air discharged during heat dissipation of the switch equipment is usually directly dissipated into the air, and the discharged hot air cannot be utilized, so that the waste of resources is caused; secondly, when the power supply abnormality exists in the high-voltage complete switch equipment, the high-voltage complete switch equipment cannot be intelligently powered off, faults in a circuit can possibly be isolated and protected in time, and the occurrence risk of safety accidents is increased. For example, a short circuit or overload in the circuit may cause a fire or equipment damage.
The above information disclosed in the background section is only for enhancement of understanding of the background of the disclosure and therefore it may include information that does not form the prior art that is already known to a person of ordinary skill in the art.
Disclosure of Invention
The invention aims to provide intelligent high-voltage complete switch equipment with an environment-friendly and energy-saving function, and the power generation fan blade is arranged at the exhaust lower opening of the exhaust fan, so that the power generation fan blade can rotate to generate power through wind exhausted by the exhaust fan and store electric energy.
In order to achieve the above object, the present invention provides the following technical solutions: an intelligent high-voltage complete switch device with environmental protection and energy saving functions comprises a shell and a high-voltage complete switch device body arranged in the shell;
And also comprises
The L-shaped bracket is arranged on one side of the shell;
The exhaust fan is arranged on one side of the side end surface of the shell close to the L-shaped bracket and is used for blowing out hot air in the shell to realize heat dissipation;
The power generation fan blade is arranged at the exhaust lower opening of the exhaust fan and can rotate through the air exhausted by the exhaust fan;
The power generation assembly is arranged on the L-shaped bracket and is coupled with the power generation fan blades, wherein the power generation assembly can generate power and store electric energy through the rotation of the power generation fan blades;
The sensing system is used for intelligently sensing abnormal power supply of the high-voltage complete switch equipment body, sending out early warning prompt when the abnormal power supply is sensed, and supplying power to the high-voltage complete switch equipment body through electric energy stored by the power generation assembly so as to ensure power failure.
Preferably, the power generation assembly comprises an equipment cylinder sleeved at the top end of the L-shaped bracket, a direct-current generator is arranged in the equipment cylinder, and a rotating shaft of the direct-current generator penetrates through the center of the power generation fan blade and is connected with the power generation fan blade;
The shell corresponds one side of exhaust fan and installs the cover body, set up the air outlet on the cover body, the one side opening that the air outlet is close to the exhaust fan is greater than the one side opening that keeps away from the exhaust fan.
Preferably, the inside of equipment section of thick bamboo is provided with intelligent battery, still is provided with the dc-to-ac power inverter that is used for converting direct current into alternating current, electric connection between dc-to-ac power generator and the intelligent battery, electric connection between dc-to-ac power inverter and the intelligent battery, dc-to-ac power inverter and high voltage switchgear body electric connection, when the hot-blast blowing out in the exhaust fan will casing, direct action power generation flabellum makes the power generation flabellum rotatory, and then generates electricity through dc-to-ac power generator, the electricity that dc-to-ac power generator sent is stored through intelligent battery, when needs use, after the electric energy of intelligent battery output turns into alternating current through the dc-to-ac power inverter, the high voltage switchgear body uses.
Preferably, the sensing system comprises a data acquisition module, a central processing unit and an early warning module;
The data acquisition module acquires three-phase current information and contact resistance information of the high-voltage switchgear body, performs exception processing on the three-phase current information and the contact resistance information after acquisition, generates a three-phase current unbalance index and a contact resistance increment index, and transmits data after exception processing to the central processing unit.
Preferably, the logic for three-phase current imbalance index acquisition is as follows:
acquiring three-phase current values of the high-voltage switchgear main body at the same time, and respectively using the three-phase current values ，，And (3) carrying out representation, and calculating three-phase current deviation indexes at the same time, wherein the calculated expression is as follows: In which, in the process, Representing three-phase current deviation indexes at the same moment;
Acquiring three-phase current deviation indexes of the high-voltage complete switch equipment body at different moments in a fixed time window, and establishing a data set F with the acquired three-phase current deviation indexes, so as to obtain the three-phase current deviation indexes Wherein y represents the total number of three-phase current deviation indices within the data set;
After the three-phase current deviation indexes in the analysis set are sequenced in sequence, the maximum three-phase current deviation index is screened out, and the maximum three-phase current deviation index is calibrated as ；
Calculating a three-phase current unbalance index through the maximum three-phase current deviation index, wherein the calculated expression is as follows: In which, in the process, Representing the three-phase current imbalance index.
Preferably, the logic for obtaining the contact resistance increment index is:
Converting the measured data of contact resistance into time series data by Representing;
performing first-order differential operation on the time series data to obtain the contact resistance increment between adjacent time points, wherein the expression for calculating the contact resistance increment by the differential operation is as follows: ， for the contact resistance increment, the variation between the time points k and k+1 is represented;
carrying out statistical analysis on the differential sequence, and calculating a contact resistance increment index, wherein the calculated expression is as follows: In which, in the process, Indicating the contact resistance increment index.
Preferably, the central processing unit obtains the three-phase current unbalance index after processingContact resistance increment indexThereafter, the three-phase current unbalance indexContact resistance increment indexAfter comprehensive analysis, the hidden danger of power failure is generatedThe formula according to is: In which, in the process, 、Respectively three-phase current unbalance indexContact resistance increment indexIs a preset proportionality coefficient of (1), and、Are all greater than 0.
Preferably, after the hidden danger of outage generated in a fixed time window when the high-voltage complete switch equipment body operates is obtained, the hidden danger of outage is compared with a preset hidden danger reference threshold value of outage, if the hidden danger of outage is greater than or equal to the hidden danger reference threshold value of outage, a hidden danger signal is generated, the hidden danger signal is transmitted to a battery management system of an intelligent storage battery, the intelligent storage battery is controlled by the battery management system in the intelligent storage battery to output direct current, the direct current is converted into alternating current through an inverter, sufficient power is provided for the high-voltage complete switch equipment body, meanwhile, an early warning prompt is sent out to the hidden danger signal, relevant personnel are informed of the situation, if the hidden danger of outage is greater than or equal to the hidden danger reference threshold value of outage, a normal signal is generated, and no indication is made to the normal signal.
In the technical scheme, the invention has the technical effects and advantages that:
According to the intelligent power-off control system, the power generation fan blades are arranged at the exhaust lower opening of the exhaust fan, so that the power generation fan blades can rotate through the wind exhausted by the exhaust fan to generate power and store electric energy, hot wind generated when the exhaust fan dissipates heat of the high-voltage complete switch equipment can be effectively utilized, when the hidden danger that the high-voltage complete switch equipment cannot be intelligently powered off exists, the intelligent storage battery is controlled to output direct current through the battery management system in the intelligent storage battery, the direct current is converted into alternating current through the inverter, sufficient power is provided for the high-voltage complete switch equipment body, and meanwhile, early warning prompt is sent out to inform related personnel of knowing the situation and timely maintain and manage the situation, and intelligent power-off of the high-voltage complete switch equipment cannot be realized due to insufficient power supply can be effectively avoided, so that dangerous accidents are avoided.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings for those skilled in the art.
Fig. 1 is a schematic diagram of the overall structure of an intelligent high-voltage switchgear with environmental protection and energy saving functions.
Fig. 2 is a schematic diagram of the explosive structure of fig. 1 according to the present invention.
FIG. 3 is an exploded view of the power generation assembly of FIG. 2 according to the present invention.
FIG. 4 is a schematic block diagram of the sensing system of the present invention.
In the figure: 1. a housing; 2. a high voltage switchgear assembly body; 3. an exhaust fan; 4. generating fan blades; 5. an L-shaped bracket; 6. a cover body; 7. a power generation assembly; 71. an equipment cylinder; 72. a direct current generator; 73. an inverter; 74. and (5) an intelligent storage battery.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art.
The invention provides intelligent high-voltage complete switch equipment with an environment-friendly and energy-saving function, as shown in fig. 1 to 4, which comprises a shell 1 and a high-voltage complete switch equipment body 2 arranged in the shell 1;
And also comprises
An L-shaped bracket 5 mounted on one side of the housing 1;
The exhaust fan 3 is arranged on one side of the side end surface of the shell 1, which is close to the L-shaped bracket 5, and is used for blowing out hot air in the shell 1 to realize heat dissipation;
The power generation fan blade 4 is arranged at the exhaust lower opening of the exhaust fan 3 and can rotate through the wind exhausted by the exhaust fan 3;
the power generation assembly 7 is arranged on the L-shaped bracket 5 and is coupled with the power generation fan blades 4, wherein the power generation assembly 7 can realize power generation and store electric energy through the rotation of the power generation fan blades 4;
The power generation assembly 7 comprises an equipment cylinder 71 sleeved at the top end of the L-shaped bracket 5, a direct current generator 72 is arranged in the equipment cylinder 71, a rotating shaft of the direct current generator 72 penetrates through the center position of the power generation fan blade 4 and is connected with the power generation fan blade 4, an intelligent storage battery 74 is arranged in the equipment cylinder 71, an inverter 73 for converting direct current into alternating current is further arranged in the equipment cylinder, the direct current generator 72 is electrically connected with the intelligent storage battery 74, the inverter 73 is electrically connected with the high-voltage switchgear body 2, when the exhaust fan 3 blows hot air in the shell 1, the exhaust fan 3 directly acts on the power generation fan blade 4 to enable the power generation fan blade 4 to rotate, and then power is generated through the direct current generator 72, the power generated by the direct current generator 72 is stored through the intelligent storage battery 74, and when the power generated by the intelligent storage battery 74 is required to be converted into alternating current through the inverter 73, and then the high-voltage switchgear body 2 is used;
The housing 1 is provided with the housing 6 corresponding to one side of the exhaust fan 3, the housing 6 is provided with an air outlet, the opening of one side of the air outlet close to the exhaust fan 3 is larger than the opening of one side far away from the exhaust fan 3, so as to accelerate the wind exhausted by the exhaust fan 3 and act on the power generation fan blades 4, and the opening of one side of the air outlet close to the exhaust fan 3 is larger than the opening of one side far away from the exhaust fan 3;
The high-voltage switchgear assembly body 2 generally uses alternating current. This is because most power systems are ac power systems, including high voltage transmission systems and power distribution systems. Thus, high voltage switchgear is typically designed to handle and control ac circuits to meet the needs of the power system.
The Battery with the Battery management system Battery MANAGEMENT SYSTEM, abbreviated BMS, is commonly referred to as a smart Battery or smart storage Battery 74. A BMS is a system specially designed to monitor, control and protect a secondary battery, which can ensure safe operation of the battery, optimize the battery performance, and improve the life of the battery.
The sensing system is used for intelligently sensing the power supply abnormality of the high-voltage complete switch equipment body 2, sending out an early warning prompt when the power supply abnormality is sensed, and supplying power to the high-voltage complete switch equipment body 2 through the electric energy stored by the power generation assembly 7 so as to ensure power failure;
the sensing system comprises a data acquisition module, a central processing unit and an early warning module;
the data acquisition module acquires three-phase current information and contact resistance information of the high-voltage switchgear body 2, performs exception processing on the three-phase current information and the contact resistance information after acquisition, generates a three-phase current unbalance index and a contact resistance increment index, and transmits data after exception processing to the central processing unit.
Unbalanced three-phase current may cause the power supply of the high-voltage switchgear assembly to be insufficient, thereby affecting the intelligent power-off function thereof. First, three-phase current imbalance may cause uneven distribution of equipment loads across the phases. When a load is overweight in a phase, the voltage of that phase drops and the power requirements of the device may not be met. As a result, the corresponding device may not operate normally, thereby affecting the power supply stability of the entire high voltage switchgear. If load imbalance persists, the power shortage may lead to reduced performance of the device or even damage the device. Second, three-phase current imbalance may cause voltage imbalance in the power grid. The unbalanced voltage can lead the voltage fluctuation of the power supply to be larger, and the voltage can possibly exceed the rated working range of the equipment, thereby influencing the normal operation of the equipment. When the voltage unbalance is large, the protection device of the equipment may malfunction, so that the equipment trips or stops, and the power supply quality and the realization of the intelligent power-off function are affected. Finally, three-phase current imbalance can result in power imbalance between the different phases, such that portions of the device assume different work than the design load. This may increase the loss of the device, in particular the load of the motor etc. Excessive loss may make the total power of the power supply system unable to meet the load demand, resulting in insufficient power supply and unable to realize the intelligent power-off function.
The logic for three-phase current imbalance index acquisition is as follows:
Acquiring three-phase current values of the high-voltage complete switch equipment body 2 at the same time, and respectively using the three-phase current values ，，And (3) carrying out representation, and calculating three-phase current deviation indexes at the same time, wherein the calculated expression is as follows: In which, in the process, Representing three-phase current deviation indexes at the same moment;
It should be noted that, the current transformer is a sensor, and is usually installed in a high-voltage switchgear assembly to measure current. Each phase will typically be fitted with a current transformer for measuring the current value of the corresponding phase. The current transformer will step down the high voltage current to a low voltage signal suitable for measurement and transmit to the monitoring device or meter for processing and display.
The larger the three-phase current deviation index at the same time, the more unbalanced the three currents are.
Acquiring three-phase current deviation indexes of the high-voltage complete switch equipment body 2 at different moments in a fixed time window, and establishing a data set F with the acquired three-phase current deviation indexes, therebyWherein y represents the total number of three-phase current deviation indices within the data set;
After the three-phase current deviation indexes in the analysis set are sequenced in sequence, the maximum three-phase current deviation index is screened out, and the maximum three-phase current deviation index is calibrated as ；
Calculating a three-phase current unbalance index through the maximum three-phase current deviation index, wherein the calculated expression is as follows: In which, in the process, Representing the three-phase current imbalance index.
According to the calculation expression of the three-phase current unbalance index, the larger the expression value of the three-phase current unbalance index generated in the fixed time window when the high-voltage complete switch equipment body 2 operates, the larger the hidden danger that the high-voltage complete switch equipment cannot realize intelligent power failure due to insufficient power supply is indicated, and otherwise, the smaller the hidden danger that the high-voltage complete switch equipment cannot realize intelligent power failure due to insufficient power supply is indicated.
Abnormal increases in contact resistance may result in insufficient power to the high voltage switchgear assembly, thereby affecting the intelligent power down function. First, an abnormal increase in contact resistance means that a greater resistance is encountered as current passes through the contact point. This will result in an increased energy loss at the contact point, where energy will be converted into heat. As heat builds up, the temperature near the point of contact will rise. Such an increase in temperature can cause expansion or deformation of the contact point material, further increasing contact resistance, forming a vicious circle. Eventually, this will result in a further increase in energy consumption, consuming power from the system, so that the power is insufficient, and sufficient power cannot be normally provided to support the implementation of the smart power down function. Second, abnormal increase of contact resistance may cause poor contact, reducing current transmission efficiency. Under normal conditions, the contact point should have a low resistance to ensure smooth transfer of current. But as contact resistance increases, the ability of current to pass through the contact point decreases, resulting in voltage drop and current limiting. Such a situation may limit the power capability of the device and may not provide enough power to support the operation of the smart power down function. Finally, high voltage switchgear assemblies are often equipped with protection devices for detecting and responding to abnormal conditions to protect the safe operation of the equipment and power system. When the contact resistance increases abnormally, this may be mistaken for a signal of an overload or other failure of the device. The protection device may malfunction, causing the equipment to trip or shut down. Although the device is in order to protect the safety of the device, the device cannot continue to supply power, and the realization of the intelligent power-off function is affected.
The acquisition logic of the contact resistance increment index is as follows:
converting the measured data of contact resistance, i.e. the resistance value of contact resistance, into time series data using Representing;
It should be noted that measurement using a specific contact resistance measuring instrument is the most direct and common method. These instruments can be directly connected to the contact portion of the high voltage switchgear assembly and the contact resistance calculated by measuring the current and voltage changes. The measuring instrument generally has high precision and real-time display function, and can provide accurate contact resistance value.
Performing first-order differential operation on the time series data to obtain the contact resistance increment between adjacent time points, wherein the expression for calculating the contact resistance increment by the differential operation is as follows:， for the contact resistance increment, the variation between the time points k and k+1 is represented;
carrying out statistical analysis on the differential sequence, and calculating a contact resistance increment index, wherein the calculated expression is as follows: In which, in the process, Indicating the contact resistance increment index;
The smaller the expression value of the contact resistance increment index, the smaller the change in contact resistance, i.e., the higher the stability of the contact portion, and the larger the change in contact resistance, i.e., the lower the stability of the contact portion.
According to the calculation expression of the contact resistance increment index, the larger the expression value of the contact resistance increment index generated in the fixed duration window when the high-voltage complete switch equipment body 2 operates, the larger the hidden danger that the high-voltage complete switch equipment cannot realize intelligent power failure due to insufficient power supply is indicated, and otherwise, the smaller the hidden danger that the high-voltage complete switch equipment cannot realize intelligent power failure due to insufficient power supply is indicated.
The central processing unit obtains the processed three-phase current unbalance indexContact resistance increment indexThereafter, the three-phase current unbalance indexContact resistance increment indexAfter comprehensive analysis, the hidden danger of power failure is generatedThe formula according to is: In which, in the process, 、Respectively three-phase current unbalance indexContact resistance increment indexIs a preset proportionality coefficient of (1), and、Are all greater than 0.
As can be seen from the calculation formula, the larger the representation value of the three-phase current unbalance index generated in the fixed time window and the larger the representation value of the contact resistance increment index are, the generated hidden danger of outage isThe larger the expression value of the high-voltage complete switch equipment is, the larger the hidden trouble that the intelligent power failure cannot be realized due to insufficient power supply of the high-voltage complete switch equipment is, and the smaller the hidden trouble that the intelligent power failure cannot be realized due to insufficient power supply of the high-voltage complete switch equipment is.
After acquiring the hidden danger of power failure generated in a fixed time window when the high-voltage switchgear body 2 operates, comparing the hidden danger of power failure with a preset hidden danger reference threshold value of power failure, if the hidden danger of power failure is greater than or equal to the hidden danger reference threshold value of power failure, generating hidden danger signals, transmitting the hidden danger signals to a battery management system of the intelligent storage battery 74, controlling the intelligent storage battery 74 to output direct current through the battery management system in the intelligent storage battery 74, converting the direct current into alternating current through the inverter 73, providing sufficient power for the high-voltage switchgear body 2, sending early warning prompts to the hidden danger signals, informing related personnel of knowing the situation, and timely carrying out maintenance management on the situation.
According to the intelligent power-off control system, the power generation fan blades 4 are arranged at the exhaust lower opening of the exhaust fan 3, so that the power generation fan blades 4 can rotate through the wind exhausted by the exhaust fan 3 to generate power and store electric energy, hot air generated when the exhaust fan 3 dissipates heat of the high-voltage complete switch equipment can be effectively utilized, when the hidden danger that intelligent power-off cannot be realized exists in the high-voltage complete switch equipment, the intelligent storage battery 74 is controlled to output direct current through the battery management system in the intelligent storage battery 74, the direct current is converted into alternating current through the inverter 73, sufficient power is provided for the high-voltage complete switch equipment body 2, meanwhile, early warning prompt is sent out to hidden danger signals to inform relevant personnel of the situation, maintenance management is timely carried out on the situation, and therefore the situation that intelligent power-off cannot be realized due to insufficient power supply of the high-voltage complete switch equipment can be effectively avoided, and dangerous accidents are further avoided.
The above formulas are all formulas with dimensions removed and numerical values calculated, the formulas are formulas with a large amount of data collected for software simulation to obtain the latest real situation, and preset parameters in the formulas are set by those skilled in the art according to the actual situation.
The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by means of wires or wireless, such as infrared, wireless, microwave, etc. Computer readable storage media can be any available media that can be accessed by a computer or data storage devices, such as servers, data centers, etc. that contain one or more collections of available media. Usable media may be magnetic media such as floppy disks, hard disks, magnetic tape, optical media such as DVDs), or semiconductor media. The semiconductor medium may be a solid state disk.
It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the several embodiments provided in the present application, it should be understood that the disclosed system and method may be implemented in other manners. For example, the embodiments described above are merely illustrative, e.g., the partitioning of elements is merely a logical functional partitioning, and there may be additional partitioning in actual implementation, e.g., multiple elements or components may be combined or integrated into another system, or some features may be omitted, or not implemented. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The foregoing is merely illustrative embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the technical scope of the present application, and the application should be covered. Therefore, the protection scope of the application is subject to the protection scope of the claims.
Claims (2)
1. An intelligent high-voltage complete switch device with the functions of environmental protection and energy saving is characterized by comprising a shell (1) and a high-voltage complete switch device body (2) arranged in the shell (1);
And also comprises
The L-shaped bracket (5) is arranged at one side of the shell (1);
The exhaust fan (3) is arranged on one side of the side end surface of the shell (1) close to the L-shaped bracket (5) and is used for blowing out hot air in the shell (1) to realize heat dissipation;
The power generation fan blade (4) is arranged at the exhaust lower opening of the exhaust fan (3) and can rotate through the wind exhausted by the exhaust fan (3);
the power generation assembly (7) is arranged on the L-shaped bracket (5) and is coupled with the power generation fan blades (4), wherein the power generation assembly (7) can generate power and store electric energy through the rotation of the power generation fan blades (4);
The power generation assembly (7) comprises an equipment cylinder (71) sleeved at the top end of the L-shaped bracket (5), a direct current generator (72) is arranged in the equipment cylinder (71), and a rotating shaft of the direct current generator (72) penetrates through the center position of the power generation fan blade (4) and is connected with the power generation fan blade (4);
a cover body (6) is arranged on one side of the shell (1) corresponding to the exhaust fan (3), an air outlet is formed in the cover body (6), and an opening on one side of the air outlet, which is close to the exhaust fan (3), is larger than an opening on one side, which is far away from the exhaust fan (3);
The intelligent power supply device is characterized in that an intelligent storage battery (74) is arranged in the device barrel (71), an inverter (73) used for converting direct current into alternating current is further arranged, the direct current generator (72) is electrically connected with the intelligent storage battery (74), the inverter (73) is electrically connected with the high-voltage complete switch device body (2), when the exhaust fan (3) blows hot air in the shell (1), the exhaust fan directly acts on the power generation fan blades (4) to enable the power generation fan blades (4) to rotate, and then the direct current generator (72) is used for generating power, the electricity generated by the direct current generator (72) is stored through the intelligent storage battery (74), and when the intelligent storage battery (74) is required to be used, the electric energy output by the intelligent storage battery (74) is converted into the alternating current through the inverter (73) and then the high-voltage complete switch device body (2) is used;
The sensing system is used for intelligently sensing the power supply abnormality of the high-voltage complete switch equipment body (2), sending out an early warning prompt when the power supply abnormality is sensed, and supplying power to the high-voltage complete switch equipment body (2) through the electric energy stored by the power generation assembly (7) so as to ensure power failure;
the sensing system comprises a data acquisition module, a central processing unit and an early warning module;
The data acquisition module acquires three-phase current information and contact resistance information of the high-voltage switchgear body (2), performs exception processing on the three-phase current information and the contact resistance information after acquisition to generate a three-phase current unbalance index and a contact resistance increment index, and transmits the data after exception processing to the central processing unit;
The logic for three-phase current imbalance index acquisition is as follows:
three-phase current values of the high-voltage complete switch equipment body (2) at the same time are obtained and are respectively used ，，And (3) carrying out representation, and calculating three-phase current deviation indexes at the same time, wherein the calculated expression is as follows: In which, in the process, Representing three-phase current deviation indexes at the same moment;
acquiring three-phase current deviation indexes of the high-voltage complete switch equipment body (2) at different moments in a fixed time window, and establishing a data set F by the acquired three-phase current deviation indexes Wherein y represents the total number of three-phase current deviation indices within the data set;
After the three-phase current deviation indexes in the analysis set are sequenced in sequence, the maximum three-phase current deviation index is screened out, and the maximum three-phase current deviation index is calibrated as ；
Calculating a three-phase current unbalance index through the maximum three-phase current deviation index, wherein the calculated expression is as follows: In which, in the process, Representing a three-phase current imbalance index;
the acquisition logic of the contact resistance increment index is as follows:
Converting the measured data of contact resistance into time series data by Representing;
performing first-order differential operation on the time series data to obtain the contact resistance increment between adjacent time points, wherein the expression for calculating the contact resistance increment by the differential operation is as follows: ， for the contact resistance increment, the variation between the time points k and k+1 is represented;
carrying out statistical analysis on the differential sequence, and calculating a contact resistance increment index, wherein the calculated expression is as follows: In which, in the process, Indicating the contact resistance increment index;
The central processing unit obtains the processed three-phase current unbalance index Contact resistance increment indexThereafter, the three-phase current unbalance indexContact resistance increment indexAfter comprehensive analysis, the hidden danger of power failure is generatedThe formula according to is: In which, in the process, 、Respectively three-phase current unbalance indexContact resistance increment indexIs a preset proportionality coefficient of (1), and、Are all greater than 0.
2. The intelligent high-voltage switchgear with the environment-friendly and energy-saving functions according to claim 1 is characterized in that after a hidden danger of outage generated in a fixed time window when the high-voltage switchgear body (2) is operated is obtained, the hidden danger of outage is compared with a preset hidden danger reference threshold value, if the hidden danger of outage is greater than or equal to the hidden danger reference threshold value, a hidden danger signal is generated, the hidden danger signal is transmitted to a battery management system of an intelligent storage battery (74), the battery management system in the intelligent storage battery (74) is used for controlling the intelligent storage battery (74) to output direct current, the direct current is converted into alternating current through an inverter (73), sufficient power is provided for the high-voltage switchgear body (2), meanwhile, an early warning prompt is sent out to inform relevant personnel of the situation, if the hidden danger of outage is greater than or equal to the hidden danger reference threshold value, a normal signal is generated, and no indication is made to the normal signal.
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