Wiring-free power distribution state remote monitoring current transformer

Abstract

The invention discloses a wiring-free power distribution state remote monitoring current transformer, which relates to the technical field of current monitoring, and is characterized in that the wiring-free power distribution state remote monitoring current transformer comprises a fixed magnetic ring and an analysis processing part, the fixed magnetic ring comprises a first magnetic core and a second magnetic core, and the analysis processing part comprises a shell; a power supply module, an amplification module, a central processing unit and a GSM module are arranged in the shell. The fixed magnetic ring of the device measures the current flowing through the power distribution cable in real time; the analysis processing part processes and analyzes the current data monitored by the fixed magnetic ring and sends the processed data to the remote terminal, and a worker displays the current data through the remote terminal, so that the current of the distribution cable is measured remotely. The problems that most of existing current transformers can only meet in-situ current measurement or wireless transmission current transformers are small in measurement range, tedious in operation process, high in working technical requirement and large in risk control difficulty are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of current monitoring, and in particular relates to a current transformer for remote monitoring of power distribution status without wiring. Background Art

[0002] Monitoring the status of distribution current is an essential function for power distribution equipment. Distribution equipment, such as distribution transformers and switchgear, is crucial for delivering grid power to end users, serving as the closest link between the power grid and consumers. Furthermore, within the distribution system, measuring distribution current is essential for achieving power metering, power monitoring, protection, power quality testing, and regular inspections of distribution lines.

[0003] However, current measurement devices currently installed on power distribution equipment, such as current transformers and shunts, are mostly limited to local current measurement. Remotely acquiring distribution line current requires the installation of transmitters and access to communications equipment. This process is cumbersome, requires high technical skills, and poses significant risk management challenges.

[0004] Furthermore, while some current transformers currently on the market are capable of wireless transmission, they require a wired connection to a power supply or current acquisition module to operate. Installing such devices on power distribution equipment also presents challenges such as cumbersome procedures, high technical requirements, and difficulty in risk management. Furthermore, these current transformers have a limited measurement range, and some installations may require power outages. This significantly limits their installation on distribution equipment and makes them unable to meet the growing demand for power distribution monitoring.

[0005] Therefore, in order to solve the above problems, it is necessary to set up a current transformer for remote monitoring of the power distribution status without wiring, so as to solve the problems that most existing current transformers can only meet the needs of on-site current measurement or wireless transmission current transformers, and have small measurement range, cumbersome operation process, high technical requirements for work, and difficult risk control. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to solve the deficiencies in the prior art and to design a new current transformer for remote monitoring of the power distribution status without wiring. The current transformer for remote monitoring of the power distribution status without wiring has a simple structure and comprises a fixed magnetic ring and an analysis and processing component. The fixed magnetic ring is fixed on the outside of the distribution cable to measure the current flowing through the distribution cable in real time; the analysis and processing component is fixed on the side of the fixed magnetic ring to process and analyze the current data monitored by the fixed magnetic ring, and send the processed data to a remote PC software platform or a mobile phone app platform. Corresponding software is set on the remote PC software platform or the mobile phone app platform. The staff can more conveniently display the current data through the PC software platform or the mobile phone app platform, thereby realizing remote monitoring of the power distribution status and convenient application of data, and realizing remote measurement of the current of the distribution cable, solving the problems that most existing current transformers can only meet the needs of on-site current measurement or wireless transmission current transformers, and have a small measurement range, cumbersome operation process, high technical requirements for work, and difficult risk control.

[0007] The solution adopted by the present invention to solve the technical problem is:

[0008] A current transformer for remote monitoring of power distribution status without wiring.

[0009] It is characterized by:

[0010] It includes a fixed magnetic ring fixed on the outside of the distribution cable and an analysis and processing component fixed on the side of the fixed magnetic ring.

[0011] The fixed magnetic ring includes a first magnetic core and a second magnetic core, and the first magnetic core and the second magnetic core are connected by the attraction between the two.

[0012] The analysis and processing component includes a housing, in which a power supply module, an amplification module, a central processing unit and a GSM module are arranged.

[0013] The second magnetic core is connected to the power supply module and the amplification module,

[0014] The amplification module is connected to the central processing unit,

[0015] The central processing unit is connected to the GSM module.

[0016] The power supply module is connected to the central processing unit and the GSM module.

[0017] The GSM module is wirelessly connected to the remote terminal by setting a GSM wireless communication transceiver chip.

[0018] As a preferred embodiment of the present invention,

[0019] The power supply module includes a power supply coil wound around the outside of the second magnetic core,

[0020] The power supply coil is connected in parallel with a resistor R1 and a voltage stabilizing module.

[0021] The output end of the voltage stabilizing module is connected to the central processing unit and the GSM module.

[0022] As a preferred embodiment of the present invention,

[0023] The amplification module includes a measuring coil, a resistor R2, a resistor R3, a resistor R4, a resistor R5 and an amplifier U1.

[0024] The measuring coil is wound around the outside of the second magnetic core.

[0025] One end of the measuring coil is connected to one end of the resistor R4, one end of the resistor R5 and the non-inverting input end of the amplifier U1.

[0026] The other end of the measuring coil is connected to the other end of the resistor R4 and one end of the resistor R3.

[0027] The other end of the resistor R3 is connected to the inverting input end of the amplifier U1 and one end of the resistor R2.

[0028] The other end of the resistor R2 is connected to the output end of the amplifier U1.

[0029] The other end of the resistor R5 is grounded.

[0030] As a preferred embodiment of the present invention,

[0031] The fixed magnetic core adopts a circular ring structure.

[0032] As a preferred embodiment of the present invention,

[0033] The resistance of the resistor R1 is 20Ω.

[0034] The power of the resistor R1 is 180W.

[0035] The current of the power supply coil flows through the resistor R1 to form a voltage with a voltage value of 4.5-60V.

[0036] As a preferred embodiment of the present invention,

[0037] The resistance of the resistor R2 is 33K.

[0038] The resistance of the resistor R3 is 3.3K.

[0039] The resistance of the resistor R4 is 0.1R.

[0040] The resistance of the resistor R5 is 1K.

[0041] As a preferred embodiment of the present invention,

[0042] The voltage stabilizing module adopts the voltage stabilizing chip SCT2630ASTER.

[0043] As a preferred embodiment of the present invention,

[0044] The voltage output by the voltage stabilizing module is 3.3V.

[0045] As a preferred embodiment of the present invention,

[0046] The measuring coil has a coil ratio of 600:5.

[0047] The measuring coil has a measuring range of 10-600A.

[0048] As a preferred embodiment of the present invention,

[0049] The housing is provided with a display screen,

[0050] The display screen is connected to the GSM module,

[0051] The display screen is used to display the current value of the distribution cable in real time.

[0052] Compared with the prior art, the present invention has the following beneficial effects:

[0053] 1. The device of the present invention provides a current transformer for remote monitoring of power distribution status without wiring, which is used to solve the problems that most existing current transformers can only meet the needs of local current measurement or wireless transmission current transformers, such as small measurement range, cumbersome operation process, high technical requirements for work, and difficult risk control. It has a simple structure and includes a fixed magnetic ring and an analysis and processing component. The fixed magnetic ring is fixed on the outside of the distribution cable to measure the current flowing through the distribution cable in real time; the analysis and processing component is fixed on the side of the fixed magnetic ring, processes and analyzes the current data monitored by the fixed magnetic ring, and sends the processed data to a remote terminal. Corresponding software is set on the remote terminal, and staff can more conveniently display current data through a PC software platform or a mobile phone app platform, thereby realizing remote monitoring of the power distribution status and convenient application of data, and realizing remote measurement of the current of the distribution cable.

[0054] 2. The fixed magnetic ring adopts an open structure. No power outage is required during installation. The installation can be completed by simply snapping the open magnetic core onto the distribution cable. This improves installation efficiency, reduces the risk level during installation, and minimizes the impact of power outages on the normal operation of the distribution system.

[0055] 3. The device of the present invention adopts a dual-coil mode of a measuring coil and a power supply coil, which effectively solves the power supply problem of the current measurement and current transmission circuit.

[0056] The power supply coil provides power to the current transformer's internal circuitry, eliminating the need for wired power connections and significantly simplifying installation. The measuring coil offers a measurement range of 10-600A, meeting current measurement requirements in a variety of power distribution scenarios. No power connection is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 This is a block diagram of the internal structure of a current transformer for remote monitoring of power distribution status without wiring proposed by the present invention;

[0058] Figure 2 This is a structural diagram of a current transformer for remote monitoring of power distribution status without wiring proposed by the present invention;

[0059] Figure 3 This is a structural block diagram of a remote terminal connected to a current transformer for remote monitoring of power distribution status without wiring proposed by the present invention.

[0060] Description of reference numerals:

[0061] 1.Fix the magnetic ring,

[0062] 1-1, the first magnetic core,

[0063] 1-2, the second magnetic core,

[0064] 2. Analysis and processing components,

[0065] 2-1, shell,

[0066] 2-2, power supply coil,

[0067] 2-3. Measuring coil,

[0068] 2-4, display screen,

[0069] 2-5, switch,

[0070] 3. Distribution cable. DETAILED DESCRIPTION

[0071] The specific implementation of the present invention is described below with reference to the accompanying drawings and embodiments:

[0072] It should be noted that the structures, colors, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention.

[0073] At the same time, in the description of the present invention, it should be understood that the terms "one end", "the other end", "middle", "upper", "one side", "top", "inside", "front", "center", "both ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0074] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one such feature.

[0075] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or directly designed as one body; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0076] like Figure 1-Figure 3 As shown, the present invention proposes a current transformer for remote monitoring of power distribution status without wiring, which is used to be fixed on the distribution cable 3 to measure the current of the distribution cable 3 in real time, thereby realizing remote measurement of the current of the distribution cable 3. Specifically, it comprises a fixed magnetic ring 1 and an analysis and processing component 2. The fixed magnetic ring 1 is fixed on the outside of the distribution cable 3 to measure the current flowing through the distribution cable 3 in real time; the analysis and processing component 2 is fixed on the side of the fixed magnetic ring 1 to process and analyze the current data monitored by the fixed magnetic ring 1, and send the processed data to a remote terminal. The corresponding software is set on the remote terminal, and the staff can more conveniently display the current data through the PC software platform or the mobile phone app platform. At the same time, these current data can also be used to realize functions such as power metering, power monitoring, power quality inspection, and regular inspection, thereby realizing remote monitoring of the power distribution status and convenient application of data.

[0077] The fixed magnetic ring 1 includes a first magnetic core 1-1 and a second magnetic core 1-2. The first magnetic core 1-1 and the second magnetic core 1-2 are connected by the suction between the two. The first magnetic core 1-1 and the second magnetic core 1-2 form an open-type fixed magnetic ring 1. There is no need to cut off the power during installation. The first magnetic core 1-1 and the second magnetic core 1-2 can be directly separated. After the two are placed on both sides of the distribution cable 3, they can be reconnected by the suction between the two. The open-type fixed magnetic ring 1 can be clamped on the distribution cable 3 to complete the installation.

[0078] The fixed magnetic ring 1 adopts an open-type structure, eliminating the need for power outages during installation. Installation can be completed by simply snapping the open core onto the distribution cable 3. This improves installation efficiency, reduces installation risks, and mitigates the impact of power outages on the normal operation of the power distribution system. This makes the device of the present invention simple and convenient to install and remove, improving installation efficiency while reducing installation risks and minimizing the impact of power outages on the normal operation of the power distribution system.

[0079] The analysis and processing component 2 includes a shell 2-1, in which a power supply module, an amplification module, a central processing unit and a GSM module are arranged. The fixed magnetic core and the power supply module, the amplification module, the central processing unit and the GSM module are connected through the shell 2-1 to integrate them into one, thereby synchronously realizing the measurement of current and the analysis and processing of measurement data.

[0080] Second magnetic core 1-2 connects to the power supply module and the amplifier module, which powers the components within housing 2-1. This solves the power supply issue during current measurement and data transmission, eliminating the need for wired power access. The amplifier module converts the secondary current into an analog voltage signal.

[0081] The amplification module is connected to the central processing unit, which is connected to the GSM module. The GSM module is wirelessly connected to the remote terminal via a GSM wireless communication transceiver chip. A GSM wireless communication transceiver chip is integrated within the housing 2-1. This chip can remotely transmit current data to a PC or mobile phone, achieving wireless current transmission, eliminating the wiring steps required for current collection and improving current collection efficiency. Workers can conveniently display current data through a PC software platform or mobile app platform. This current data can also be used to implement functions such as energy metering, power monitoring, power quality testing, and regular inspections, enabling remote monitoring of power distribution status and convenient data application.

[0082] The amplifier module amplifies the converted voltage analog signal and sends it to the central processing unit. The central processing unit receives the voltage analog signal, calculates the actual current, and controls the GSM module for external communication. The GSM module receives the control commands and current data from the central processing unit and transmits the current signal to a remote terminal via wireless transmission.

[0083] At the same time, the power supply module is directly connected to the central processing unit and the GSM module to supply power to the central processing unit and the GSM module.

[0084] Specifically, the central processing unit and the GSM module are directly implemented using existing chips on the market. For example, the central processing unit can be S3C2440 or STM32F103; the GSM module can be BenQ M23AG or SIM900A.

[0085] The S3C2440, based on the ARM920T processor, boasts a rich set of peripheral interfaces. It features A / D conversion, converting analog signals from the amplifier circuit into digital signals for current calculation. General-purpose I / O ports connect the amplifier module to the GSM module, enabling programmable communication control of the GSM module. Furthermore, its powerful computing capabilities enable rapid processing of collected voltage signals and accurate calculation of actual current values.

[0086] The STM32F103 series includes an ADC module, which can be used to collect amplified analog voltage signals, convert them into digital values, and then calculate the actual current using an internal arithmetic unit. Connecting to a GSM module via a USART serial port or SPI interface enables data transmission and control command transmission to and from the GSM module, thereby controlling external communications with the GSM module.

[0087] The BenQ M23AG connects to a central processing unit (CPU) via a serial port, receiving control commands and current data from the CPU. Supporting SMS and data transmission over the GSM network, the received current data can be wirelessly transmitted to a PC software platform or mobile app. For example, current data can be sent via SMS to a designated mobile phone, or transmitted to a remote monitoring center server via GPRS.

[0088] The SIM900A's UART interface allows for easy connection to a central processing unit (CPU), receiving control commands and current data from the CPU. Data can be transmitted via the GSM network, sending current data as text messages, or via GPRS to a PC software platform or mobile app.

[0089] The power supply module includes a power supply coil 2-2 wound around the outside of the second magnetic core 1-2. A resistor R1 and a voltage regulator module are connected in parallel to the power supply coil 2-2. The power supply coil 2-2 generates a current when wound around the outside of the second magnetic core 1-2. Resistor R1 is connected in parallel to the power supply coil 2-2. The current in the power supply coil 2-2 passes through resistor R1, generating a voltage within a certain range. The voltage regulator module converts the voltage generated by resistor R1 into a stable voltage of a certain value. The output of the voltage regulator module is connected to the central processing unit and the GSM module to power both.

[0090] In this embodiment, the resistance of resistor R1 is 20Ω, and the power of resistor R1 is 180W. The current of power supply coil 2-2 flows through resistor R1 to form a voltage of 4.5-60V. The voltage stabilizing resistor R1 converts the current of power supply coil 2-2 into a voltage of 4.5-60V, which is then stabilized by the voltage stabilizing module to power the CPU and GSM module.

[0091] The voltage regulator module utilizes the SCT2630ASTER, a voltage regulator chip that directly adapts to the 4.5-60V voltage input generated by power supply coil 2-2 via resistor R1, eliminating the need for additional step-down or step-up steps and simplifying the circuit structure. The chip also supports a high 3.5A output current, providing stable power for the CPU and GSM module. Its 0.8V±1% high-precision feedback voltage ensures stable output voltage, meeting the power supply accuracy requirements of sensitive electronic components.

[0092] The voltage regulator module outputs a 3.3V voltage. The current from coil 2-2 flows through resistor R1, generating a voltage of 4.5-60V. The voltage regulator module uses the SCT2630ASTER voltage regulator chip. It converts the 4.5-60V input voltage into a 3.3V DC voltage to power the CPU and GSM module.

[0093] The amplification module includes a measuring coil 2-3, a resistor R2, a resistor R3, a resistor R4, a resistor R5 and an amplifier U1. The measuring coil 2-3 is wound around the outside of the second magnetic core 1-2. One end of the measuring coil 2-3 is connected to one end of the resistor R4, one end of the resistor R5 and the non-inverting input terminal of the amplifier U1. The other end of the measuring coil 2-3 is connected to the other end of the resistor R4 and one end of the resistor R3. The other end of the resistor R3 is connected to the inverting input terminal of the amplifier U1 and one end of the resistor R2. The other end of the resistor R2 is connected to the output terminal of the amplifier U1. The other end of the resistor R5 is grounded.

[0094] Measuring coil 2-3 measures the current in distribution cable 3, converting the primary current into a secondary current through the transformation ratio of measuring coil 2-3. After the test is complete, the amplifier circuit consisting of resistors R2, R3, R4, and R5, and amplifier U1, converts the secondary current into an analog voltage signal, amplifies it, and sends it to the central processing unit.

[0095] The resistance of resistor R2 is 33K, and the resistance of resistor R3 is 3.3K. Resistors R2 and R3 form the negative feedback network of amplifier U1, which determines the amplification factor:

[0096] ,

[0097] Fixed resistor values ​​ensure stable gain accuracy.

[0098] The large resistance values ​​of resistors R2 and R3 reduce thermal noise in the feedback loop. At the same time, compared with small resistance resistors, high resistance resistors consume less power at the same current.

[0099] Resistor R4, connected in parallel across measuring coil 2-3, converts the secondary current generated by measuring coil 2-3 into a voltage signal. Resistor R4 converts the current into a millivolt-level voltage, which is then amplified 11 times to a level within the range that the CPU can capture.

[0100] In this embodiment, the resistance of resistor R4 is 0.1R. The small resistance of 0.1R has little effect on the secondary circuit of the measuring coil 2-3, avoiding the increase of the current transformer error due to excessive load. When the secondary current is small, the power consumption is extremely low, reducing heat and energy loss. The low impedance node is insensitive to external interference, which can improve the stability of the signal.

[0101] The resistance of resistor R5 is 1K, which provides a reference ground for the non-inverting input terminal of amplifier U1 to form a voltage divider network.

[0102] The device of the present invention uses a dual-coil configuration consisting of a measuring coil 2-3 and a power supply coil 2-2. This effectively solves the power supply issues for both the current measurement and current transmission circuits, eliminating the need for wired power access. The measuring coil 2-3 provides a measurement range of 10-600A, meeting the current measurement needs of various power distribution scenarios. The power supply coil 2-2 provides power for the internal circuits of the current transformer, solving the power supply issue for the current transmission circuit. This eliminates the need for wired power access and greatly simplifies the installation process.

[0103] The fixed magnetic core adopts a circular ring structure, which is consistent with the circular appearance of the distribution cable 3, so that the inner side of the fixed magnetic core and the outer side of the distribution cable 3 fit more closely, thereby improving the accuracy of the measurement result.

[0104] Measuring coils 2-3 have a 600:5 transformation ratio, converting primary currents ranging from 10-600A to a standardized secondary output. This allows the full-scale secondary current of 5A to be directly compatible with common measuring instruments, simplifying signal processing. This fixed transformation ratio ensures linear output across the entire range. Combined with the characteristics of the magnetic core, this ensures manageable measurement errors. Furthermore, the electrical isolation achieved through electromagnetic induction ensures the safety of downstream circuitry and personnel.

[0105] The measuring range of measuring coils 2-3 is 10-600A. This takes into account both small load monitoring and high current measurement needs. The converted voltage signal can be directly adapted to the ADC input of the central processing unit after amplification, ensuring stable and distortion-free signals at the full range.

[0106] Housing 2-1 is provided with a display screen 2-4, which is connected to a GSM module and is used to display the measured values ​​of distribution cable 3 in real time. The GSM module wirelessly transmits the current signal to a remote terminal and simultaneously sends the data to display screen 2-4, which displays the current value of distribution cable 3 in real time. The digital display is intuitive and convenient, assisting workers during overhead operations and helping them complete line maintenance work.

[0107] In addition, the housing 2-1 is also provided with necessary switches 2-5, indicator lights and other necessary devices.

[0108] The present invention discloses a device for remotely monitoring the current transformer for power distribution status without wiring, and the manufacturing and assembly process thereof:

[0109] 1. Material selection and preparation

[0110] According to the design requirements, prepare the first magnetic core 1-1, the second magnetic core, the power supply coil 2-2, the voltage stabilizing module, the resistor R1, the measuring coil 2-3, the resistor R2, the resistor R3, the resistor R4, the resistor R5 and the amplifier U1, the central processing unit and the GSM module and other materials and devices.

[0111] 2. Assembly process

[0112] Connect the power supply coil 2-2 and resistor R1 in parallel according to the designed connection method, ensure that the connection is stable, and then connect them to the voltage regulator module to form a stable power supply circuit.

[0113] Install the measuring coil 2-3 so that its position and angle with the distribution cable 3 meet the measurement requirements to ensure accurate current measurement.

[0114] Build an amplification module to convert and amplify the secondary current signal output by the measuring coil 2-3, and then connect it to the central processing unit.

[0115] Connect the GSM module to the CPU to ensure that the communication line is unobstructed and can accurately receive the control commands and current data of the central controller.

[0116] The above-mentioned parts are integrated and installed in the housing 2-1, and each component is fixed to ensure that it will not become loose or displaced during use.

[0117] 3. Debugging and testing

[0118] Perform a power-on test on the assembled wiring-free power distribution status remote monitoring current transformer to check whether the power supply circuit can work normally and whether the voltage stabilization module can output a stable 3.3V DC voltage.

[0119] Use a standard current source to calibrate the measuring coil 2-3, check the accuracy of the measurement data, and adjust the parameters of the amplification module to ensure that the measurement accuracy meets the requirements.

[0120] Test the wireless transmission function of the GSM module, install the assembled wiring-free power distribution status remote monitoring current transformer in a simulated power distribution environment, receive current data through the PC software platform and mobile app platform, and check the stability and real-time performance of data transmission.

[0121] The assembled wiring-free power distribution status remote monitoring current transformer was tested for a long period of time to observe its performance under different working conditions and ensure that the equipment can operate stably and reliably.

[0122] After the above implementation process, the assembled wiring-free power distribution status remote monitoring current transformer of the present invention can realize efficient, accurate and remote monitoring of the power distribution status, meeting the actual needs of the power monitoring field.

[0123] The preferred embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the scope of the present invention.

[0124] Many other changes and modifications can be made without departing from the spirit and scope of the present invention. It should be understood that the present invention is not limited to the specific embodiments, and the scope of the present invention is defined by the appended claims.

Claims

1. A current transformer for remote monitoring of power distribution status without wiring. It is characterized by: It comprises a fixed magnetic ring (1) fixed on the outside of the distribution cable (3) and an analysis and processing component (2) fixed on the side of the fixed magnetic ring (1). The fixed magnetic ring (1) comprises a first magnetic core (1-1) and a second magnetic core (1-2), wherein the first magnetic core (1-1) and the second magnetic core (1-2) are connected by an attraction force between the first magnetic core (1-1) and the second magnetic core (1-2). The analysis and processing component (2) comprises a housing (2-1), wherein a power supply module, an amplification module, a central processing unit and a GSM module are arranged in the housing (2-1). The second magnetic core (1-2) is connected to the power supply module and the amplification module. The amplification module is connected to the central processing unit, The central processing unit is connected to the GSM module. The power supply module is connected to the central processing unit and the GSM module. The GSM module is wirelessly connected to the remote terminal by setting a GSM wireless communication transceiver chip.

2. A current transformer for remote monitoring of power distribution status without wiring as claimed in claim 1, It is characterized by: The power supply module comprises a power supply coil (2-2) wound around the outside of the second magnetic core (1-2), The power supply coil (2-2) is connected in parallel with a resistor R1 and a voltage stabilizing module. The output end of the voltage stabilizing module is connected to the central processing unit and the GSM module.

3. A current transformer for remote monitoring of power distribution status without wiring as claimed in claim 1, It is characterized by: The amplification module includes a measuring coil (2-3), a resistor R2, a resistor R3, a resistor R4, a resistor R5 and an amplifier U1. The measuring coil (2-3) is wound around the outside of the second magnetic core (1-2). One end of the measuring coil (2-3) is connected to one end of the resistor R4, one end of the resistor R5 and the in-phase input end of the amplifier U1. The other end of the measuring coil (2-3) is connected to the other end of the resistor R4 and one end of the resistor R3. The other end of the resistor R3 is connected to the inverting input end of the amplifier U1 and one end of the resistor R2. The other end of the resistor R2 is connected to the output end of the amplifier U1. The other end of the resistor R5 is grounded.

4. A current transformer for remote monitoring of power distribution status without wiring as claimed in claim 1, It is characterized by: The fixed magnetic core adopts a circular ring structure.

5. A current transformer for remote monitoring of power distribution status without wiring as claimed in claim 2, It is characterized by: The resistance of the resistor R1 is 20Ω. The power of the resistor R1 is 180W. The current of the power supply coil (2-2) flows through the resistor R1 to form a voltage with a voltage value of 4.5-60V.

6. A current transformer for remote monitoring of power distribution status without wiring as claimed in claim 3, It is characterized by: The resistance of the resistor R2 is 33K. The resistance of the resistor R3 is 3.3K. The resistance of the resistor R4 is 0.1R. The resistance of the resistor R5 is 1K.

7. A current transformer for remote monitoring of power distribution status without wiring as claimed in claim 2, It is characterized by: The voltage stabilizing module adopts the voltage stabilizing chip SCT2630ASTER.

8. A current transformer for remote monitoring of power distribution status without wiring as claimed in claim 7, It is characterized by: The voltage output by the voltage stabilizing module is 3.3V.

9. A current transformer for remote monitoring of power distribution status without wiring as claimed in claim 3, It is characterized by: The coil ratio of the measuring coil (2-3) is 600:

5. The measuring coil (2-3) has a measuring range of 10-600A.

10. A current transformer for remote monitoring of power distribution status without wiring as claimed in claim 1, It is characterized by: The housing (2-1) is provided with a display screen (2-4), The display screen (2-4) is connected to the GSM module, The display screen (2-4) is used to display the current value of the distribution cable (3) in real time.

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