Intelligent safety electric equipment based on intelligent control system and isolation transformation system

Abstract

The utility model discloses intelligent safety electric equipment based on an intelligent control system and an isolation transformation system, and relates to the technical field of electric safety control. Comprising an isolation transformation system and an intelligent control system which are connected in sequence. According to the utility model, intelligentization, datamation, visualization and remote monitoring of products are realized by combining the Internet of Things with the electrical technology, and the platform displays the service power, voltage, current, wire temperature, position, total amount of equipment, alarm data of the equipment and detailed classification of various data of all the equipment in real time; data processing is carried out through the management platform, and the data are synchronously and visually displayed after being received; and if any abnormal data exists in the monitoring process, the data is popup to a management platform in real time, and all operation data of the equipment is pushed to an alarm record list.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical safety control, in particular to an intelligent safe power consumption device based on an intelligent control system and an isolation transformer system. Background Technique

[0002] Traditional air switches and leakage protections are non-networked devices, and each time they are turned on and off, manual switching is required at a fixed position; moreover, their specifications are fixed and cannot be adjusted. If there are requirements for other specifications, the device needs to be replaced; traditional air switches and leakage protections cannot display data such as voltage, current, power, and temperature in the circuit system; the reaction speed of traditional air switches and leakage protections is about 20 ms, and once leakage occurs, the entire circuit system will be shut down.

[0003] Therefore, proposing an intelligent safe power consumption device based on an intelligent control system and an isolation transformer system to solve the difficulties existing in the prior art is an urgent problem that needs to be solved by those skilled in the art. Content of the Utility Model

[0004] In view of this, the utility model provides an intelligent safe power consumption device based on an intelligent control system and an isolation transformer system, which can effectively inhibit the fault and instability diffusion and scope of the power consumption system, and effectively prevent large-scale electrical disasters and their related impacts.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] An intelligent safe power consumption device based on an intelligent control system and an isolation transformer system, comprising: an isolation transformer system and an intelligent control system connected in sequence.

[0007] For the above device, optionally, the isolation transformer system includes: a transformer, a first LDO power supply module, and a second LDO power supply module; the output end of the transformer is electrically connected to the input ends of the first LDO power supply module and the second LDO power supply module respectively;

[0008] For the above device, optionally, the transformer is composed of two or more windings wound on a common iron core;

[0009] (1) The primary is grounded and the secondary is not grounded;

[0010] (2) There is an isolation layer between the primary and secondary windings. This isolation layer is connected to the primary grounding end, that is, the isolation layer is grounded; the secondary end is isolated from the power grid and the electrostatic field.

[0011] For the above-mentioned device, optionally, the intelligent control system includes: an MCU main control, a 4G module, a relay switch k1, a relay switch k2, a power analysis module, and a display control module; the MCU main control is electrically connected to the 4G module, the relay switch k1, the relay switch k2, the power analysis module, and the display control module respectively.

[0012] For the above-mentioned device, optionally, the isolation transformer system is connected to the power analysis module of the intelligent control system through the first LDO power module;

[0013] It is connected to the MCU main control of the intelligent control system through the second LDO power module.

[0014] For the above-mentioned device, optionally, the power analysis module includes:

[0015] A detection resistor, a current transformer, an electric energy metering chip, and an opto-isolation unit;

[0016] Among them, the detection resistor, the opto-isolation unit, and the current transformer are respectively connected to the electric energy metering chip;

[0017] The detection resistor and the current transformer are used to detect overvoltage and send the detection results to the electric energy metering chip;

[0018] For the above-mentioned device, optionally, the display control module includes: a buzzer, an LCD, and function keys;

[0019] The buzzer, the LCD, and the function keys are respectively electrically connected to the MCU main control.

[0020] From the above technical solutions, it can be seen that compared with the prior art, the intelligent safe power consumption device of the present utility model based on an intelligent control system and an isolation transformer system has the following beneficial effects:

[0021] (1) When a fault occurs, the time for control, diagnosis, and switching is only a few hundred milliseconds faster than traditional power technologies, greatly improving the flexibility and speed of emergency response. While effectively preventing the spread of instability and protecting the safe operation of the power consumption system, it also exerts a powerful processing ability, effectively suppressing the faults, instability spread, and scope of the power consumption system, and effectively preventing large-scale electrical disasters and their related impacts;

[0022] (2) By transmitting low-latency and high-bandwidth data to achieve control, protection, and fault location, it has the advantages of high flexibility, good anti-interference performance, high security, and shared bandwidth, and can realize remote monitoring, control, and fault diagnosis of large-scale power consumption systems, issue control parameters, and remote data processing capabilities;

[0023] (3) Due to the flexibility, high reliability, and security of high-speed data transmission technology, the functions of the system are more comprehensive, and it has better operating performance and information processing capabilities;

[0024] (4) Technologies such as sensors, wireless networks, and computers in the Internet of Things environment, as well as monitoring, management, and service systems, are integrated together through Internet of Things technology to combine the physical world with digital information and achieve the technology of Internet of Things data transmission and processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0026] Figure 1 It is a structural diagram of an intelligent safe power consumption device based on an intelligent control system and an isolation transformer system provided by the present invention;

[0027] Figure 2 It is a structural diagram of the transformer in the isolation transformer system of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0029] In this application, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. The term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0030] Refer to Figure 1 As shown, the present invention discloses an intelligent safe power consumption device based on an intelligent control system and an isolation transformer system, including: an isolation transformer system and an intelligent control system connected in sequence.

[0031] Further, the isolation transformer system includes: a transformer, a first LDO power module, and a second LDO power module; the output end of the transformer is electrically connected to the input ends of the first LDO power module and the second LDO power module respectively;

[0032] The isolation transformer system is used to convert high-voltage alternating current into low-voltage direct current through the transformer.

[0033] Even further, as Figure 2 shown, the transformer mainly consists of two or more windings wound around a common iron core.

[0034] (1) The primary side is grounded, and the secondary side is not grounded;

[0035] (2) There is also an isolation layer between the primary and secondary winding packages, and this isolation layer is connected to the primary grounding end, that is, the isolation layer is grounded; so the secondary side is isolated from the power grid and the electrostatic field;

[0036] Because the secondary side is not grounded, the output end and the ground do not form a loop, and there will be no electric shock when a person touches the output single-ended; moreover, due to the electrostatic isolation, electrostatic interference and electrostatic breakdown are avoided during the operation of the secondary side; in addition, by using the characteristic that the iron core has large high-frequency losses, high-frequency clutter is suppressed from entering the control circuit.

[0037] Specifically, the safety transformer applies the isolation technology of electromagnetic compatibility.

[0038] Power electronic equipment includes two parts, namely the conversion part and the control part. The former belongs to the category of high-power flow and strong electricity, and the latter belongs to the category of information flow and weak electricity. Generally, the former is the main electromagnetic interference source, and the latter is the object being interfered with. In order to make the power electronic equipment operate reliably, in addition to solving the electrical isolation between the conversion part and the control part, the problem of electromagnetic interference resistance of the control part also needs to be solved, especially when the conversion part is in the situation of high voltage, strong current, and high-frequency conversion. The anti-interference problem is essentially to solve the electromagnetic compatibility problem of power electronic equipment.

[0039] Isolation technology is one of the important technologies in electromagnetic compatibility.

[0040] The transformer of the safe electrical equipment provides electrical isolation between the AC power line (main power supply) and the electrical equipment.

[0041] The transformer mainly consists of two or more windings wound around a common iron core. When an alternating voltage is applied to one winding, an alternating voltage is induced in other windings due to electromagnetic induction. Therefore, the several windings of the transformer are interconnected through an alternating magnetic field and are electrically isolated from each other in the circuit. The dielectric strength of its isolation depends on the insulation strength between the several windings and their grounding.

[0042] The isolation transformer system provides electrical isolation between the AC power line (main power supply) and the electrical equipment;

[0043] The transformer mainly consists of two or more windings wound around a common iron core; when an alternating voltage is applied to one winding, an alternating voltage is induced in the other windings due to electromagnetic induction; therefore, the several windings of the transformer are interconnected through an alternating magnetic field and are electrically isolated from each other in the circuit; the dielectric strength of the isolation depends on the insulation strength between the several windings and their insulation to the ground;

[0044] There is no DC path between the two windings of the transformer; they are mainly used for three purposes:

[0045] 1. Isolate the secondary winding from the ground (earthing);

[0046] 2. Provide step-up and step-down operations of the line (main) voltage;

[0047] 3. Reduce the line noise transmitted from the primary winding to the secondary winding and vice versa;

[0048] Its primary task is to electrically insulate and isolate the primary and secondary windings, so the most basic requirement for it is to ensure the insulation performance between the primary and secondary sides; and voltage transformation is not its primary task, it does not perform voltage transformation, that is, the number of turns of the primary and secondary windings is equal; for example, the pulse transformer used in the thyristor DC speed control system to prevent the high voltage of the main circuit from invading the pulse numerical control device is also typical.

[0049] Specifically, the voltage relationship is expressed as:

[0050] E1 = 4.44fN1Φm

[0051] E1 / E2 = U1 / U2 = N1 / N2 = n

[0052] Where: E1 - the induced electromotive force of the primary side of the transformer; E2 - the induced electromotive force of the secondary side of the transformer; U1 - the voltage of the primary side of the transformer; U2 - the voltage of the secondary side of the transformer;

[0053] N1 - the number of turns of the primary winding of the transformer; N2 - the number of turns of the secondary winding of the transformer; f - the frequency of the primary side voltage of the transformer; Φm - the peak value of the magnetic flux in the transformer iron core; n - the turns ratio of the primary and secondary windings of the transformer.

[0054] Current relationship

[0055] I1 / I2 = N2 / N1 = 1 / n

[0056] Where: I1 - the current of the primary side of the transformer; I2 - the current of the secondary side of the transformer.

[0057] Power relationship

[0058] P1 = P2 = U1I1 = U2I2

[0059] Where: P1 - the input power of the primary side of the transformer; P2 - the output power of the secondary side of the transformer.

[0060] Impedance relationship

[0061] The impedance of the secondary side is:

[0062] Z2 = U2 / I2

[0063] The impedance of the primary side is:

[0064] Z1 = U1 / I1 = n2U2 / I2 = n2Z2

[0065] Where: Z1 - the impedance of the primary side of the transformer; Z2 - the impedance of the secondary side of the transformer.

[0066] Furthermore, the intelligent control system includes: an MCU main control, a 4G module, a relay switch k1, a relay switch k2, a power analysis module, and a display control module; the MCU main control is electrically connected to the 4G module, the relay switch k1, the relay switch k2, the power analysis module, and the display control module respectively;

[0067] The intelligent control system processes the data input by the power analysis module and the 4G module through the MCU main control, and makes feedback through the relay switch k1, the relay switch k2, and the display control module.

[0068] Specifically, the intelligent control system integrates technologies such as sensors, wireless networks, computers, etc. in the Internet of Things environment, as well as monitoring, management, and service systems through the Internet of Things technology, combines the physical world with digital information, and realizes the technology of Internet of Things data transmission and processing.

[0069] Utilize Internet of Things + electrical engineering technology to realize product intelligence, dataization, visualization, and remote monitoring. The platform can display the usage power, voltage, current, line temperature, location, total number of devices, device alarm data, and detailed classification of various data of all devices in real time. Through the management platform for data processing, the received data is synchronously visualized and displayed; during the monitoring process, if there is any abnormal data, the data will be popped up to the management platform in real time and all operation data of the device will be pushed to the alarm record list.

[0070] Furthermore, the isolation transformer system is connected to the power analysis module of the intelligent control system through the first LDO power module, and is used to supply power to the power analysis module with the converted low-voltage direct current;

[0071] It is connected to the MCU main control of the intelligent control system through the second LDO power module, and is used to supply power to the MCU main control with the converted low-voltage direct current.

[0072] Furthermore, the electric energy analysis module includes:

[0073] a detection resistor, a current transformer, an electric energy metering chip, and an opto-isolation unit;

[0074] Among them, the detection resistor, the opto-isolation unit, and the current transformer are respectively connected to the electric energy metering chip;

[0075] The detection resistor and the current transformer are used to detect overvoltage of the voltage and send the detection result to the electric energy metering chip;

[0076] The opto-isolation unit is used to isolate interference signals.

[0077] Furthermore, the display control module includes: a buzzer, an LCD, and function keys;

[0078] The buzzer, the LCD, and the function keys are respectively electrically connected to the main control of the MCU.

[0079] And Figure 1 Correspondingly, the present invention also discloses a specific implementation method for safe electricity use of equipment:

[0080] 1. At the main power supply of a house or a factory building, the commercial power first passes through an isolation transformer system and then through an intelligent control system. The transformer first converts the input 220V AC voltage into 5V DC voltage, and then conveys the 5V DC power to the first LDO power module and the second LDO power module. The first LDO power module selects the LR7533 power chip for the electric energy, and the second LDO power module selects the ME1117-3.3V single-chip microcomputer power supply; the first LDO power module and the second LDO power module respectively supply power to the BL0903 electric energy metering chip and the MCU host. Relay switches K1, K2, a detection resistor, and a current transformer are arranged on the power consumption circuit. The BL0903 electric energy metering chip is electrically connected through the detection resistor and the current transformer, collects voltage data on the power consumption circuit, measures and obtains data information such as overcurrent, overvoltage, effective value of active power voltage, and active electric energy, and sends it to the MCU host. During the sending process, the opto-isolation unit isolates interference signals, and the opto-coupler model is TLP781. The MCU host analyzes the data information, displays it on the LCD monitor, and sends it to the APP through the 4G module. The user can in turn control the equipment through the keys matching the display screen or the APP. In addition, the MCU host can also cut off the power supply by controlling the relay switch and give an alarm through the buzzer.

[0081] Then it is output to the house or the factory building to realize the safety protection and intelligent control of the electricity in the house or the factory building.

[0082] 2. This system can be installed in a dangerous chemicals warehouse. First, at the power inlet, the 220V mains power passes through an isolation transformer system and then through an intelligent control system, and the backend is connected to the normal power consumption system. Firstly, it avoids the fire hazard caused by circuit short - circuit. Secondly, the warehouse duty officers and management personnel can manage on duty at any location through the mobile terminal. Whether it is a holiday or on a business trip, they can obtain relevant information in a timely manner without the need for frequent on - site inspections. This effectively reduces the number of duty inspection personnel, and at the same time quickly and accurately locates the fault points, discovering potential hazards that are difficult to detect by human inspections. Through the data analysis and report export of the service platform, potential hazard points that often have problems can be intuitively and scientifically evaluated, and early rectification can be carried out to avoid the probability of greater accidents.

[0083] Each embodiment in this specification is described in a progressive manner. For the same or similar parts among the embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments. In particular, for the system or system embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and reference can be made to the corresponding parts of the method embodiments for the relevant content. The systems and system embodiments described above are only illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. A person of ordinary skill in the art can understand and implement it without creative work.

[0084] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An intelligent safety electrical equipment based on an intelligent control system and an isolation transformer system, characterized in that: It includes the following connected in sequence: an isolation transformer system and an intelligent control system; The intelligent control system includes: an MCU main control, a 4G module, a relay switch k1, a relay switch k2, an electric energy analysis module and a display control module; the MCU main control is electrically connected to the 4G module, the relay switch k1, the relay switch k2, the electric energy analysis module and the display control module respectively.

2. According to claim 1, an intelligent safety electrical equipment based on an intelligent control system and an isolation transformer system is characterized in that: The isolation transformer system comprises: a transformer, a first LDO power module and a second LDO power module; the output end of the transformer is electrically connected to the input ends of the first LDO power module and the second LDO power module respectively.

3. According to claim 2, the intelligent safety electrical equipment based on the intelligent control system and the isolation transformer system is characterized in that: The transformer consists of two or more windings wound on a common core. The specific structure of the transformer is as follows: The primary is grounded, and the secondary is not grounded; There is an isolation layer between the primary and secondary coils, which is connected to the primary grounding terminal, i.e. the isolation layer is grounded; the secondary terminal is isolated from the power grid and the electrostatic field.

4. According to claim 1, the intelligent safety electrical equipment based on intelligent control system and isolation transformer system is characterized in that: The isolation transformer system is connected to the power analysis module of the intelligent control system through the first LDO power module; The second LDO power module is connected to the MCU main control of the intelligent control system.

5. According to claim 1, the intelligent safety electrical equipment based on intelligent control system and isolation transformer system is characterized in that: The power analysis module includes: Detection resistor, mutual inductor, electric energy metering chip and optocoupler isolation unit; Among them, the detection resistor, the optical coupling isolation unit and the mutual inductor are respectively connected to the electric energy metering chip.

6. According to claim 1, the intelligent safety electrical equipment based on intelligent control system and isolation transformer system is characterized in that: The display control module includes: buzzer, LCD and function buttons; The buzzer, LCD and function keys are electrically connected to the MCU main control respectively.

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