Self-adaptive current transformer and adjustment control method thereof

Abstract

The invention relates to the technical field of transformer metering, and provides a self-adaptive current transformer and an adjustment control method thereof, and the self-adaptive current transformer comprises a main control module which carries out the corresponding control of a current transformer body according to the data of a data processing module, and transmits the data information to a communication module; the data acquisition and processing module is used for acquiring and processing current data in the current transformer body and sending the processed data to the main control module; the communication module is used for receiving the working state signal of the current transformer body transmitted by the main control module; the switching module is used for adjusting the current transformer body based on the control signal of the main control module; the key module is used for selecting an operation mode based on a key, sending out a corresponding control signal through the main control module and carrying out series-parallel operation on the current transformer body through the switching module; and the current transformer body comprises at least two current transformers with the same turn ratio. According to the invention, the problem of replacing the mutual inductor during low load or overload can be effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of mutual inductor measurement, and in particular to an adaptive current mutual inductor and a regulation and control method thereof. Background Art

[0002] A current transformer (CT) is an instrument that uses the principle of electromagnetic induction to convert a large primary current into a smaller secondary current for measurement. A CT consists of a closed iron core and windings. Its primary winding has a small number of turns and is connected in series with the current being measured.

[0003] When configuring current transformers in power systems, the transformation ratio is often selected based on the annual growth rate of residential electricity consumption in the distribution substation area and the maximum current of the unit. However, due to the uncertainty of electricity consumption growth in residential and industrial areas and the unpredictability of load changes over time, current transformers often operate at less than 30% of their rated current or are overloaded.

[0004] In actual operation, the current transformer in the existing technology is just a single current transformer, which cannot meet the needs of complex working environments. When in another working state, the transformer needs to be manually replaced to meet the load requirements, which seriously affects the normal progress of metering work, on-site management, and the personal safety of operators. It is also a waste of resources, limits the application scope of the transformer, and reduces the efficiency of the transformer. Summary of the Invention

[0005] The purpose of the present invention is to solve at least one technical problem in the background technology and provide an adaptive current transformer and a regulation and control method thereof.

[0006] To achieve the above object, the present invention provides an adaptive current transformer, comprising: The main control module is used to receive data from the data acquisition and processing module, analyze and compare the data, control the current transformer body accordingly according to the data from the data processing module, and send the data information to the communication module; The data acquisition and processing module collects and processes the current data in the current transformer body and sends the processed data to the main control module as the basis for processing by the main control module; The communication module receives the working status signal of the current transformer body transmitted by the main control module and sends the signal to indicate the current status of the current transformer; The switching module adjusts the current transformer body based on the control signal of the main control module, and performs series and parallel operations on the current transformer body to adapt to the application environment of the load; The key module selects the operation mode based on the key, transmits the key signal to the main control module, and the main control module sends the corresponding control signal to perform series and parallel operation on the current transformer body through the switching module; The current transformer body includes at least two current transformers with the same turns ratio.

[0007] According to one aspect of the present invention, the current transformer body includes: a first current transformer and a second current transformer; The first current transformer comprises: a first primary input, a second primary input, a first secondary output and a second secondary output; The second current transformer includes: a third primary input, a fourth primary input, a third secondary output and a fourth secondary output; The final input end of the current transformer body is the first primary input and the fourth primary input, and the final output end is the first secondary output and the fourth secondary output.

[0008] According to one aspect of the present invention, the current transformer body further includes: a first MOS transistor, a second MOS transistor, a third MOS transistor, a fourth MOS transistor, a fifth MOS transistor, a sixth MOS transistor, a seventh MOS transistor, an eighth MOS transistor, a ninth MOS transistor, and a tenth MOS transistor; The current transformer body further includes: a first diode, a second diode, a third diode, a fourth diode, a fifth diode, a sixth diode, a seventh diode, an eighth diode, a ninth diode and a tenth diode; The cathodes of the first diode, the second diode, the third diode, the fourth diode, the fifth diode, the sixth diode, the seventh diode, the eighth diode, the ninth diode and the tenth diode are respectively connected to the drains of the first MOS transistor, the second MOS transistor, the third MOS transistor, the fourth MOS transistor, the fifth MOS transistor, the sixth MOS transistor, the seventh MOS transistor, the eighth MOS transistor, the ninth MOS transistor and the tenth MOS transistor; The anodes of the first diode, the second diode, the third diode, the fourth diode, the fifth diode, the sixth diode, the seventh diode, the eighth diode, the ninth diode and the tenth diode are connected to the source electrodes of the first MOS transistor, the second MOS transistor, the third MOS transistor, the fourth MOS transistor, the fifth MOS transistor, the sixth MOS transistor, the seventh MOS transistor, the eighth MOS transistor, the ninth MOS transistor and the tenth MOS transistor respectively; Gates of the first MOS transistor, the second MOS transistor, the third MOS transistor, the fourth MOS transistor, the fifth MOS transistor, the sixth MOS transistor, the seventh MOS transistor, the eighth MOS transistor, the ninth MOS transistor and the tenth MOS transistor are connected to the switching module.

[0009] According to one aspect of the present invention, the first-level input is connected to the drains of the first MOS transistor and the third MOS transistor; The second-level input is connected to the source of the third MOS transistor, and is also connected to the drains of the second MOS transistor and the fourth MOS transistor; The third primary input is connected to the source of the first MOS transistor and the fourth MOS transistor, and is also connected to the drain of the fifth MOS transistor; The fourth first-level input is connected to the source of the second MOS transistor and the fifth MOS transistor; The first and second stage outputs are connected to the drains of the sixth MOS transistor and the ninth MOS transistor; The second-stage output is connected to the source of the sixth MOS transistor, and is also connected to the drains of the seventh and tenth MOS transistors; The third secondary output is connected to the source electrodes of the seventh MOS transistor and the ninth MOS transistor, and is also connected to the drain electrode of the eighth MOS transistor; The fourth secondary output is connected to the source electrodes of the eighth MOS transistor and the tenth MOS transistor.

[0010] To achieve the above object, the present invention further provides a method for regulating and controlling an adaptive current transformer, comprising: (1) Confirm the working mode of the current transformer body, which includes automatic mode and manual mode. If it is automatic mode, proceed to step (2); if it is manual mode, proceed to step (5); (2) The data acquisition and processing module collects the temperature value and current value of the current transformer body and transmits them to the main control module. The main control module determines whether to perform corresponding switching operations on the current transformer body based on the current value and temperature value. If yes, it enters step (3); if not, it operates normally; (3) Determine the current connection status of the current transformer body; (4) Switch the connection mode of the current transformer body and transmit the data to the communication module; (5) The data acquisition and processing module collects the current value and temperature value of the current transformer body, processes and analyzes the data through the main control module, and transmits the data to the communication module to enter step (6); (6) According to the data value fed back by the communication module, the key module is manually adjusted. The main control module receives the instruction from the key module and outputs the adjustment signal to the switching module. The switching module switches the connection mode of the current transformer body. The connection modes of the current transformer body include: primary side series connection and secondary side parallel connection; primary side parallel connection and secondary side series connection; both primary and secondary sides series connection; both primary and secondary sides parallel connection; and single operation.

[0011] According to one aspect of the present invention, during the single operation, if the first current transformer operates alone, the gates of the first MOS transistor, the second MOS transistor, the third MOS transistor, the sixth MOS transistor, the ninth MOS transistor, and the tenth MOS transistor are set to low, and the gates of the fourth MOS transistor, the fifth MOS transistor, the seventh MOS transistor, and the eighth MOS transistor are set to high; or the gates of the first MOS transistor, the third MOS transistor, the fourth MOS transistor, the sixth MOS transistor, the seventh MOS transistor, and the ninth MOS transistor are set to low, and the gates of the second MOS transistor, the fifth MOS transistor, the eighth MOS transistor, and the tenth MOS transistor are set to high; or the gates of the first MOS transistor, the second MOS transistor, the third MOS transistor, the sixth MOS transistor, the seventh MOS transistor, and the ninth MOS transistor are set to low, and the gates of the fourth MOS transistor, the fifth MOS transistor, the eighth MOS transistor, and the tenth MOS transistor are set to high; or the gates of the first MOS transistor, the third MOS transistor, the fourth MOS transistor, the sixth MOS transistor, the ninth MOS transistor, and the tenth MOS transistor are set to low, and the gates of the second MOS transistor, the fifth MOS transistor, the seventh MOS transistor, and the eighth MOS transistor are set to high; If the second current transformer operates alone, the gates of the second MOS transistor, the fourth MOS transistor, the fifth MOS transistor, the seventh MOS transistor, the eighth MOS transistor, and the tenth MOS transistor are set to low, and the gates of the first MOS transistor, the third MOS transistor, the sixth MOS transistor, and the ninth MOS transistor are set to high. Alternatively, the gates of the first MOS transistor, the second MOS transistor, the fifth MOS transistor, the eighth MOS transistor, the ninth MOS transistor, and the tenth MOS transistor are set to low, and the gates of the third MOS transistor, the fourth MOS transistor, the sixth MOS transistor, and the seventh MOS transistor are set to high. Alternatively, the gates of the second MOS transistor, the fifth MOS transistor, the eighth MOS transistor, and the tenth MOS transistor are set to low, and the gates of the first MOS transistor, the third MOS transistor, the fourth MOS transistor, the sixth MOS transistor, the seventh MOS transistor, and the ninth MOS transistor are set to high.

[0012] According to one aspect of the present invention, when the primary sides are connected in series and the secondary sides are connected in parallel, the gates of the first MOS transistor, the second MOS transistor, the third MOS transistor, the fifth MOS transistor, the sixth MOS transistor, the seventh MOS transistor, and the eighth MOS transistor are set to low, and the gates of the fourth MOS transistor, the ninth MOS transistor, and the tenth MOS transistor are set to high.

[0013] According to one aspect of the present invention, when the primary sides are connected in parallel and the secondary sides are connected in series, the gates of the third MOS transistor, the fourth MOS transistor, the fifth MOS transistor, the sixth MOS transistor, the eighth MOS transistor, the ninth MOS transistor, and the tenth MOS transistor are set to low, and the gates of the first MOS transistor, the second MOS transistor, and the seventh MOS transistor are set to high.

[0014] According to one aspect of the present invention, when the primary side and the secondary side are connected in series, the gate electrodes of the first MOS transistor, the second MOS transistor, the third MOS transistor, the fifth MOS transistor, the sixth MOS transistor, the eighth MOS transistor, the ninth MOS transistor, and the tenth MOS transistor are set to low, and the gate electrodes of the fourth MOS transistor and the seventh MOS transistor are set to high; According to one aspect of the present invention, when the primary side and the secondary side are connected in parallel, the gates of the third MOS transistor, the fourth MOS transistor, the fifth MOS transistor, the sixth MOS transistor, the seventh MOS transistor, and the eighth MOS transistor are set to low, and the gates of the first MOS transistor, the second MOS transistor, the ninth MOS transistor, and the tenth MOS transistor are set to high.

[0015] According to the solution of the present invention, the present invention can effectively solve the problem of replacing the transformer when the load is low or overloaded, and can perform manual and automatic selection control at the same time, without the need for power outage and rewiring; it increases the service life, improves work efficiency, reduces manual participation, improves applicability, increases the monitoring function of the current transformer, improves the control reliability of the current transformer, expands the application range of the current transformer, is conducive to protecting the current transformer itself, and improves the stability of the application system.

[0016] The present invention has a main control module, which is mainly used to receive data information from the data processing module, analyze and compare the information, and adjust the connection mode of the current transformer according to the information from the data acquisition and processing module, thereby reducing the problem of power loss and improving accuracy. The present invention adds a data acquisition and processing module; collects the temperature, current and other information of the current transformer, monitors different data, and is conducive to data analysis. It improves the stability of the current transformer and better processes the current transformer effectively and in real time; The present invention has an adjustable current transformer body, which can ensure the safe use of the current transformer, prevent the current transformer from overheating, and effectively protect the current transformer, thereby increasing the reliability of the transformation ratio and broadening the application range of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematically showing a structural block diagram of an adaptive current transformer according to an embodiment of the present invention; Figure 2 This is a structural layout diagram of the current transformer body of Example 1. DETAILED DESCRIPTION

[0018] The present invention will now be discussed with reference to exemplary embodiments. It should be understood that the embodiments discussed are only intended to enable those skilled in the art to better understand and implement the present invention, rather than to imply any limitation on the scope of the present invention.

[0019] As used herein, the term "including" and variations thereof are to be interpreted as open-ended terms meaning "including, but not limited to." The term "based on" is to be interpreted as "based, at least in part, on." The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment."

[0020] Figure 1 Schematically shows a structural block diagram of an adaptive current transformer according to an embodiment of the present invention. Figure 1 As shown, in this embodiment, the adaptive current transformer includes: The main control module 1 is used to receive data from the data acquisition and processing module, analyze and compare the data, control the current transformer body accordingly according to the data from the data processing module, and send the data information to the communication module; Data acquisition and processing module 2 collects and processes the current data in the current transformer body, and sends the processed data to the main control module as the basis for processing by the main control module; Communication module 3 receives the working status signal of the current transformer body transmitted by the main control module and sends the signal to prompt the current status of the current transformer; The switching module 4 adjusts the current transformer body based on the control signal of the main control module, and performs series and parallel operations on the current transformer body to adapt to the application environment of the load; The key module 5 selects the operation mode based on the key, transmits the key signal to the main control module, and the main control module sends a corresponding control signal to perform series and parallel operation on the current transformer body through the switching module; The current transformer body 6 includes at least two current transformers with the same turns ratio.

[0021] Further, according to an embodiment of the present invention, the current transformer body includes: a first current transformer and a second current transformer; The first current transformer comprises: a first primary input, a second primary input, a first secondary output and a second secondary output; The second current transformer includes: a third primary input, a fourth primary input, a third secondary output and a fourth secondary output; The final input end of the current transformer body is the first primary input and the fourth primary input, and the final output end is the first secondary output and the fourth secondary output.

[0022] Furthermore, according to an embodiment of the present invention, the current transformer body further includes: a first MOS transistor, a second MOS transistor, a third MOS transistor, a fourth MOS transistor, a fifth MOS transistor, a sixth MOS transistor, a seventh MOS transistor, an eighth MOS transistor, a ninth MOS transistor, and a tenth MOS transistor; The current transformer body further includes: a first diode, a second diode, a third diode, a fourth diode, a fifth diode, a sixth diode, a seventh diode, an eighth diode, a ninth diode and a tenth diode; The cathodes of the first diode, the second diode, the third diode, the fourth diode, the fifth diode, the sixth diode, the seventh diode, the eighth diode, the ninth diode and the tenth diode are respectively connected to the drains of the first MOS transistor, the second MOS transistor, the third MOS transistor, the fourth MOS transistor, the fifth MOS transistor, the sixth MOS transistor, the seventh MOS transistor, the eighth MOS transistor, the ninth MOS transistor and the tenth MOS transistor; The anodes of the first diode, the second diode, the third diode, the fourth diode, the fifth diode, the sixth diode, the seventh diode, the eighth diode, the ninth diode and the tenth diode are connected to the source electrodes of the first MOS transistor, the second MOS transistor, the third MOS transistor, the fourth MOS transistor, the fifth MOS transistor, the sixth MOS transistor, the seventh MOS transistor, the eighth MOS transistor, the ninth MOS transistor and the tenth MOS transistor respectively; Gates of the first MOS transistor, the second MOS transistor, the third MOS transistor, the fourth MOS transistor, the fifth MOS transistor, the sixth MOS transistor, the seventh MOS transistor, the eighth MOS transistor, the ninth MOS transistor and the tenth MOS transistor are connected to the switching module.

[0023] Further, according to an embodiment of the present invention, the first level input is connected to the drains of the first MOS transistor and the third MOS transistor; The second-level input is connected to the source of the third MOS tube, and is also connected to the drains of the second MOS tube and the fourth MOS tube; The third-level input is connected to the source of the first MOS tube and the fourth MOS tube, and is also connected to the drain of the fifth MOS tube; The fourth first-level input is connected to the source electrodes of the second MOS transistor and the fifth MOS transistor; The first and second stage outputs are connected to the drains of the sixth MOS tube and the ninth MOS tube; The second secondary output is connected to the source of the sixth MOS tube, and is also connected to the drains of the seventh and tenth MOS tubes; The third and second level outputs are connected to the source electrodes of the seventh and ninth MOS tubes, and are also connected to the drain electrode of the eighth MOS tube; The fourth secondary output is connected to the source electrodes of the eighth MOS transistor and the tenth MOS transistor.

[0024] Furthermore, to achieve the above-mentioned object, the present invention also provides a method for regulating and controlling an adaptive current transformer, comprising: (1) Confirm the working mode of the current transformer body, which includes automatic mode and manual mode. If it is automatic mode, proceed to step (2); if it is manual mode, proceed to step (5); (2) The data acquisition and processing module collects the temperature value and current value of the current transformer body and transmits them to the main control module. The main control module determines whether to perform corresponding switching operations on the current transformer body based on the current value and temperature value. If yes, it enters step (3); if not, it operates normally; (3) Determine the current connection status of the current transformer body; (4) Switch the connection mode of the current transformer body and transmit the data to the communication module; (5) The data acquisition and processing module collects the current value and temperature value of the current transformer body, processes and analyzes the data through the main control module, and transmits the data to the communication module to enter step (6); (6) According to the data value fed back by the communication module, the key module is manually adjusted. The main control module receives the instruction from the key module and outputs the adjustment signal to the switching module. The switching module switches the connection mode of the current transformer body. The connection methods of the current transformer body include: primary side series connection, secondary side parallel connection; primary side parallel connection, secondary side series connection; primary and secondary sides in series; primary and secondary sides in parallel; single operation.

[0025] Further, according to an embodiment of the present invention, when a single operation is performed, if the first current transformer operates alone, the gates of the first MOS transistor, the second MOS transistor, the third MOS transistor, the sixth MOS transistor, the ninth MOS transistor, and the tenth MOS transistor are set to low, and the gates of the fourth MOS transistor, the fifth MOS transistor, the seventh MOS transistor, and the eighth MOS transistor are set to high; or the gates of the first MOS transistor, the third MOS transistor, the fourth MOS transistor, the sixth MOS transistor, the seventh MOS transistor, and the ninth MOS transistor are set to low, and the gates of the second MOS transistor, the fifth MOS transistor, the eighth MOS transistor, and the tenth MOS transistor are set to high; or the gates of the first MOS transistor, the second MOS transistor, the third MOS transistor, the sixth MOS transistor, the seventh MOS transistor, and the ninth MOS transistor are set to low, and the gates of the fourth MOS transistor, the fifth MOS transistor, the eighth MOS transistor, and the tenth MOS transistor are set to high; or the gates of the first MOS transistor, the third MOS transistor, the fourth MOS transistor, the sixth MOS transistor, the ninth MOS transistor, and the tenth MOS transistor are set to low, and the gates of the second MOS transistor, the fifth MOS transistor, the seventh MOS transistor, and the eighth MOS transistor are set to high; If the second current transformer operates alone, the gates of the second MOS transistor, the fourth MOS transistor, the fifth MOS transistor, the seventh MOS transistor, the eighth MOS transistor, and the tenth MOS transistor are set to low, and the gates of the first MOS transistor, the third MOS transistor, the sixth MOS transistor, and the ninth MOS transistor are set to high. Alternatively, the gates of the first MOS transistor, the second MOS transistor, the fifth MOS transistor, the eighth MOS transistor, the ninth MOS transistor, and the tenth MOS transistor are set to low, and the gates of the third MOS transistor, the fourth MOS transistor, the sixth MOS transistor, and the seventh MOS transistor are set to high. Alternatively, the gates of the second MOS transistor, the fifth MOS transistor, the eighth MOS transistor, and the tenth MOS transistor are set to low, and the gates of the first MOS transistor, the third MOS transistor, the fourth MOS transistor, the sixth MOS transistor, the seventh MOS transistor, and the ninth MOS transistor are set to high.

[0026] Further, according to an embodiment of the present invention, when the primary sides are connected in series and the secondary sides are connected in parallel, the gates of the first MOS transistor, the second MOS transistor, the third MOS transistor, the fifth MOS transistor, the sixth MOS transistor, the seventh MOS transistor, and the eighth MOS transistor are set to low, and the gates of the fourth MOS transistor, the ninth MOS transistor, and the tenth MOS transistor are set to high.

[0027] Further, according to an embodiment of the present invention, when the primary sides are connected in parallel and the secondary sides are connected in series, the gates of the third MOS transistor, the fourth MOS transistor, the fifth MOS transistor, the sixth MOS transistor, the eighth MOS transistor, the ninth MOS transistor, and the tenth MOS transistor are set to low, and the gates of the first MOS transistor, the second MOS transistor, and the seventh MOS transistor are set to high.

[0028] Further, according to an embodiment of the present invention, when the primary side and the secondary side are connected in series, the gate electrodes of the first MOS transistor, the second MOS transistor, the third MOS transistor, the fifth MOS transistor, the sixth MOS transistor, the eighth MOS transistor, the ninth MOS transistor, and the tenth MOS transistor are set to low, and the gate electrodes of the fourth MOS transistor and the seventh MOS transistor are set to high; Further, according to an embodiment of the present invention, when the primary side and the secondary side are connected in parallel, the gate electrodes of the third MOS transistor, the fourth MOS transistor, the fifth MOS transistor, the sixth MOS transistor, the seventh MOS transistor, and the eighth MOS transistor are set to low, and the gate electrodes of the first MOS transistor, the second MOS transistor, the ninth MOS transistor, and the tenth MOS transistor are set to high.

[0029] According to the above-mentioned scheme of the present invention, the present invention can effectively solve the problem of replacing the transformer when the load is low or overloaded, and can perform manual and automatic selection control at the same time, without the need for power outage and rewiring; it increases the service life, improves work efficiency, reduces manual participation, improves applicability, increases the monitoring function of the current transformer, improves the control reliability of the current transformer, expands the application range of the current transformer, is conducive to protecting the current transformer itself, and improves the stability of the application system.

[0030] The present invention has a main control module, which is mainly used to receive data information from the data processing module, analyze and compare the information, and adjust the connection mode of the current transformer according to the information from the data acquisition and processing module, thereby reducing the problem of power loss and improving accuracy. The present invention adds a data acquisition and processing module; collects the temperature, current and other information of the current transformer, monitors different data, and is conducive to data analysis. It improves the stability of the current transformer and better processes the current transformer effectively and in real time; The present invention has an adjustable current transformer body, which can ensure the safe use of the current transformer, prevent the current transformer from overheating, and effectively protect the current transformer, thereby increasing the reliability of the transformation ratio and broadening the application range of the transformer.

[0031] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiment described herein is only an optimal embodiment of the present invention and is only used to explain the present invention and does not limit the scope of protection of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] Example 1 Figure 2 FIG. 1 is a structural layout diagram of the current transformer body of Example 1. Figure 2As shown, in this embodiment, the current transformer body includes a first current transformer T1 and a second current transformer T2. The current transformers T1 and T2 have the same turns ratio and further include MOS transistors labeled Q1-Q10 (i.e., the first MOS transistor to the tenth MOS transistor) and diodes labeled D1-D10 (i.e., the first diode to the tenth diode). The first current transformer T1 includes primary inputs numbered P1-1 and P1-2 (i.e., the first primary input and the second primary input), and secondary outputs labeled S1-1 and S1-2 (i.e., the first secondary output and the second secondary output). The second current transformer T2 includes primary inputs numbered P2-1 and P2-2 (i.e., the third primary input and the fourth primary input), and secondary outputs labeled S2-1 and S2-2 (i.e., the third secondary output and the fourth secondary output). The final input terminals of the current transformer body are P1-1 and P2-2, and the final output terminals are S1-1 and S2-2.

[0033] like Figure 2 As shown, in this embodiment, D of each MOS transistor represents a drain, S represents a source, and G represents a gate. The cathodes of diodes D1-D10 are respectively connected to the D of each MOS transistor, and the anodes are connected to the S of the MOS transistor to play a freewheeling role. The G of the MOS transistors Q1-Q10 is connected to the switching module.

[0034] The P1-1 terminal is connected to the D terminals of MOS tubes Q1 and Q3, the P1-2 terminal is connected to the S terminal of MOS tube Q3, and is also connected to the D terminals of Q2 and Q4; the P2-1 terminal is connected to the S terminals of MOS tubes Q1 and Q4, and is also connected to the D terminal of Q5, and the P2-2 terminal is connected to the S terminals of MOS tubes Q2 and Q5; The S1-1 terminal is connected to the D terminals of the MOS tubes Q6 and Q9, the S1-2 terminal is connected to the S terminal of the MOS tube Q6, and is also connected to the D terminals of Q7 and Q10; the S2-1 terminal is connected to the S terminals of the MOS tubes Q7 and Q9, and is also connected to the D terminal of Q8, and the S2-2 terminal is connected to the S terminals of the MOS tubes Q8 and Q10.

[0035] Furthermore, during the regulation and control process of the adaptive current transformer, the connection mode of the current transformer body is switched through the switching module, and the connection modes of the current transformer body include: primary side series connection, secondary side parallel connection; primary side parallel connection, secondary side series connection; primary and secondary sides in series connection; primary and secondary sides in parallel connection; and single operation.

[0036] In this embodiment, when a single transistor is running, if T1 is running alone, the G of the MOS transistors Q1, Q2, Q3, Q6, Q9, and Q10 needs to be set to low, and the G of the MOS transistors Q4, Q5, Q7, and Q8 needs to be set to high; or the G of the MOS transistors Q1, Q3, Q4, Q6, Q7, and Q9 needs to be set to low, and the G of the MOS transistors Q2, Q5, Q8, and Q10 needs to be set to high; or the G of the MOS transistors Q1, Q2, Q3, Q6, Q7, and Q9 needs to be set to low, and the G of the MOS transistors Q4, Q5, Q8, and Q10 needs to be set to high; or the G of the MOS transistors Q1, Q3, Q4, Q6, Q9, and Q10 needs to be set to low, and the G of the MOS transistors Q2, Q5, Q7, and Q8 needs to be set to high; If T2 is running alone, you need to set the G of MOS tubes Q2, Q4, Q5, Q7, Q8, and Q10 to low, and the G of MOS tubes Q1, Q3, Q6, and Q9 to high; or set the G of MOS tubes Q1, Q2, Q5, Q8, Q9, and Q10 to low, and the G of MOS tubes Q3, Q4, Q6, and Q7 to high; or set the G of MOS tubes Q2, Q5, Q8, and Q10 to low, and the G of MOS tubes Q1, Q3, Q4, Q6, Q7, and Q9 to high; If the primary side is connected in series and the secondary side is connected in parallel, the G of MOS tubes Q1, Q2, Q3, Q5, Q6, Q7, and Q8 needs to be set to low, and the G of MOS tubes Q4, Q9, and Q10 needs to be set to high; If the primary side is connected in parallel and the secondary side is connected in series, the G of MOS tubes Q3, Q4, Q5, Q6, Q8, Q9, and Q10 needs to be set to low, and the G of MOS tubes Q1, Q2, and Q7 needs to be set to high. If both the primary and secondary sides are connected in series, the G of MOS tubes Q1, Q2, Q3, Q5, Q6, Q8, Q9, and Q10 needs to be set to low, and the G of MOS tubes Q4 and Q7 needs to be set to high; If both the primary and secondary sides are connected in parallel, the G of MOS tubes Q3, Q4, Q5, Q6, Q7, and Q8 need to be set to low, and the G of MOS tubes Q1, Q2, Q9, and Q10 need to be set to high.

[0037] It should be emphasized that the current transformer can be two or more, all according to the following Figure 2 Make the connection, and then the switching module will perform the switching control.

[0038] Automatic mode means that when a person manually presses the automatic mode button through the key module, the switching work of the entire system is controlled by the main control module, and the person only monitors the data sent by the communication module.

[0039] Manual mode means that when a person manually presses the manual mode button through the key module, the switching work of the entire system is controlled manually. The main control module only analyzes the data of the acquisition and processing module and feeds the data back to the staff. The staff sends instructions to the main control module through the buttons in the key module. The main control module sends switching commands according to different button instructions and switches the current transformer through the switching module.

[0040] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

[0041] It should be understood that the size of the serial numbers of each step in the content of the invention and the implementation methods of the present invention does not absolutely mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the implementation methods of the present invention.

Claims

1. Adaptive current transformer, characterized in that, include: The main control module is used to receive data from the data acquisition and processing module, analyze and compare the data, control the current transformer body accordingly according to the data from the data processing module, and send the data information to the communication module; The data acquisition and processing module collects and processes the current data in the current transformer body and sends the processed data to the main control module as the basis for processing by the main control module; The communication module receives the working status signal of the current transformer body transmitted by the main control module and sends the signal to indicate the current status of the current transformer; The switching module adjusts the current transformer body based on the control signal of the main control module, and performs series and parallel operations on the current transformer body to adapt to the application environment of the load; The key module selects the operation mode based on the key, transmits the key signal to the main control module, and the main control module sends the corresponding control signal to perform series and parallel operation on the current transformer body through the switching module; The current transformer body includes at least two current transformers with the same turns ratio.

2. The adaptive current transformer according to claim 1, characterized in that: The current transformer body includes: a first current transformer and a second current transformer; The first current transformer comprises: a first primary input, a second primary input, a first secondary output and a second secondary output; The second current transformer includes: a third primary input, a fourth primary input, a third secondary output and a fourth secondary output; The final input end of the current transformer body is the first primary input and the fourth primary input, and the final output end is the first secondary output and the fourth secondary output.

3. The adaptive current transformer according to claim 2, characterized in that: The current transformer body further includes: a first MOS transistor, a second MOS transistor, a third MOS transistor, a fourth MOS transistor, a fifth MOS transistor, a sixth MOS transistor, a seventh MOS transistor, an eighth MOS transistor, a ninth MOS transistor and a tenth MOS transistor; The current transformer body further includes: a first diode, a second diode, a third diode, a fourth diode, a fifth diode, a sixth diode, a seventh diode, an eighth diode, a ninth diode and a tenth diode; The cathodes of the first diode, the second diode, the third diode, the fourth diode, the fifth diode, the sixth diode, the seventh diode, the eighth diode, the ninth diode and the tenth diode are respectively connected to the drains of the first MOS transistor, the second MOS transistor, the third MOS transistor, the fourth MOS transistor, the fifth MOS transistor, the sixth MOS transistor, the seventh MOS transistor, the eighth MOS transistor, the ninth MOS transistor and the tenth MOS transistor; The anodes of the first diode, the second diode, the third diode, the fourth diode, the fifth diode, the sixth diode, the seventh diode, the eighth diode, the ninth diode and the tenth diode are connected to the source electrodes of the first MOS transistor, the second MOS transistor, the third MOS transistor, the fourth MOS transistor, the fifth MOS transistor, the sixth MOS transistor, the seventh MOS transistor, the eighth MOS transistor, the ninth MOS transistor and the tenth MOS transistor respectively; Gates of the first MOS transistor, the second MOS transistor, the third MOS transistor, the fourth MOS transistor, the fifth MOS transistor, the sixth MOS transistor, the seventh MOS transistor, the eighth MOS transistor, the ninth MOS transistor and the tenth MOS transistor are connected to the switching module.

4. The adaptive current transformer according to claim 3, characterized in that: The first-level input is connected to the drains of the first MOS transistor and the third MOS transistor; The second-level input is connected to the source of the third MOS transistor, and is also connected to the drains of the second MOS transistor and the fourth MOS transistor; The third primary input is connected to the source of the first MOS transistor and the fourth MOS transistor, and is also connected to the drain of the fifth MOS transistor; The fourth first-level input is connected to the source of the second MOS transistor and the fifth MOS transistor; The first and second stage outputs are connected to the drains of the sixth MOS transistor and the ninth MOS transistor; The second-stage output is connected to the source of the sixth MOS transistor, and is also connected to the drains of the seventh and tenth MOS transistors; The third secondary output is connected to the source electrodes of the seventh MOS transistor and the ninth MOS transistor, and is also connected to the drain electrode of the eighth MOS transistor; The fourth secondary output is connected to the source electrodes of the eighth MOS transistor and the tenth MOS transistor.

5. The method for regulating and controlling an adaptive current transformer according to any one of claims 1 to 4, characterized in that: include: (1) Confirm the working mode of the current transformer body, which includes automatic mode and manual mode. If it is automatic mode, proceed to step (2); if it is manual mode, proceed to step (5); (2) The data acquisition and processing module collects the temperature value and current value of the current transformer body and transmits them to the main control module. The main control module determines whether to perform corresponding switching operations on the current transformer body based on the current value and temperature value. If yes, it enters step (3); if not, it operates normally; (3) Determine the current connection status of the current transformer body; (4) Switch the connection mode of the current transformer body and transmit the data to the communication module; (5) The data acquisition and processing module collects the current value and temperature value of the current transformer body, processes and analyzes the data through the main control module, and transmits the data to the communication module to enter step (6); (6) According to the data value fed back by the communication module, the key module is manually adjusted. The main control module receives the instruction from the key module and outputs the adjustment signal to the switching module. The switching module switches the connection mode of the current transformer body. The connection modes of the current transformer body include: primary side in series, secondary side in parallel; primary side in parallel, secondary side in series; both primary and secondary sides in series; both primary and secondary sides in parallel; Run alone.

6. The method for regulating and controlling an adaptive current transformer according to claim 5, characterized in that: During the single operation, if the first current transformer operates alone, the gates of the first MOS transistor, the second MOS transistor, the third MOS transistor, the sixth MOS transistor, the ninth MOS transistor, and the tenth MOS transistor are set to low, and the gates of the fourth MOS transistor, the fifth MOS transistor, the seventh MOS transistor, and the eighth MOS transistor are set to high; or the gates of the first MOS transistor, the third MOS transistor, the fourth MOS transistor, the sixth MOS transistor, the seventh MOS transistor, and the ninth MOS transistor are set to low, and the gates of the second MOS transistor, the fifth MOS transistor, the eighth MOS transistor, and the tenth MOS transistor are set to high; or the gates of the first MOS transistor, the second MOS transistor, the third MOS transistor, the sixth MOS transistor, the seventh MOS transistor, and the ninth MOS transistor are set to low, and the gates of the fourth MOS transistor, the fifth MOS transistor, the eighth MOS transistor, and the tenth MOS transistor are set to high; or the gates of the first MOS transistor, the third MOS transistor, the fourth MOS transistor, the sixth MOS transistor, the ninth MOS transistor, and the tenth MOS transistor are set to low, and the gates of the second MOS transistor, the fifth MOS transistor, the seventh MOS transistor, and the eighth MOS transistor are set to high; If the second current transformer operates alone, the gates of the second MOS transistor, the fourth MOS transistor, the fifth MOS transistor, the seventh MOS transistor, the eighth MOS transistor, and the tenth MOS transistor are set to low, and the gates of the first MOS transistor, the third MOS transistor, the sixth MOS transistor, and the ninth MOS transistor are set to high. Alternatively, the gates of the first MOS transistor, the second MOS transistor, the fifth MOS transistor, the eighth MOS transistor, the ninth MOS transistor, and the tenth MOS transistor are set to low, and the gates of the third MOS transistor, the fourth MOS transistor, the sixth MOS transistor, and the seventh MOS transistor are set to high. Alternatively, the gates of the second MOS transistor, the fifth MOS transistor, the eighth MOS transistor, and the tenth MOS transistor are set to low, and the gates of the first MOS transistor, the third MOS transistor, the fourth MOS transistor, the sixth MOS transistor, the seventh MOS transistor, and the ninth MOS transistor are set to high.

7. The method for regulating and controlling an adaptive current transformer according to claim 5, characterized in that: When the primary sides are connected in series and the secondary sides are connected in parallel, the gates of the first MOS transistor, the second MOS transistor, the third MOS transistor, the fifth MOS transistor, the sixth MOS transistor, the seventh MOS transistor, and the eighth MOS transistor are set to low, and the gates of the fourth MOS transistor, the ninth MOS transistor, and the tenth MOS transistor are set to high.

8. The method for regulating and controlling an adaptive current transformer according to claim 5, characterized in that: When the primary sides are connected in parallel and the secondary sides are connected in series, the gates of the third MOS transistor, the fourth MOS transistor, the fifth MOS transistor, the sixth MOS transistor, the eighth MOS transistor, the ninth MOS transistor, and the tenth MOS transistor are set to low, and the gates of the first MOS transistor, the second MOS transistor, and the seventh MOS transistor are set to high.

9. The method for regulating and controlling an adaptive current transformer according to claim 5, characterized in that: When the primary side and the secondary side are connected in series, the gates of the first MOS transistor, the second MOS transistor, the third MOS transistor, the fifth MOS transistor, the sixth MOS transistor, the eighth MOS transistor, the ninth MOS transistor, and the tenth MOS transistor are set to low, and the gates of the fourth MOS transistor and the seventh MOS transistor are set to high.

10. The method for regulating and controlling an adaptive current transformer according to claim 5, wherein: When the primary side and the secondary side are connected in parallel, the gates of the third MOS transistor, the fourth MOS transistor, the fifth MOS transistor, the sixth MOS transistor, the seventh MOS transistor, and the eighth MOS transistor are set to low, and the gates of the first MOS transistor, the second MOS transistor, the ninth MOS transistor, and the tenth MOS transistor are set to high.

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