Online monitor

Abstract

The invention relates to an on-line monitor comprising a monitoring instrument which is connected with a protector through a signal input line; the monitoring mechanism comprises a containing box, a monitoring assembly and a feedback assembly; wherein the monitoring assembly comprises a magnet block and a conductive straight rod, and the conductive straight rod is electrically connected with the signal input line; the feedback assembly is a pressure sensor. According to the invention, current flowing through the protector is transmitted into the monitoring instrument through the signal input line, the current flows through the conductive straight rod, the electrified conductive straight rod is acted by ampere force in a magnetic field formed by the magnet block, and then the ampere force is measured and transmitted by using the pressure sensor. The magnitude of the ampere force borne by the conductive straight rod changes accordingly, namely the current change can be reflected through the magnitude change of the ampere force measured and transmitted by the pressure sensor, and the current flowing through the composite monitoring type voltage limiting device is monitored in real time.

Description

Technical Field

[0001] The present invention relates to the technical field of current monitoring, and in particular to an online monitoring instrument. Background Art

[0002] When the composite monitoring voltage limiting device is operating normally, the zinc oxide resistor is in a high resistance state, and the leakage current flowing through it is very small. When the protector is aging, damp, mechanically damaged, etc., the leakage current will increase a lot, and the resistive current increment will be relatively large when the protector is aging, which may cause an accident to the protector over time. Therefore, it is necessary to monitor and analyze the current flowing through the protector in real time to reflect the operating status of the overvoltage protector and record the number of times the overvoltage protector has been actuated. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides an online monitoring instrument, which has the advantage of real-time monitoring of the current flowing through the composite monitoring type voltage limiting device.

[0004] To achieve the above object, the technical solution of the present invention is as follows: An online monitor comprises: a monitoring instrument, which is connected to a protector via a signal input line; and a monitoring mechanism fixedly arranged in the monitoring instrument for detecting current intensity, wherein the monitoring mechanism comprises: a containing box fixedly arranged in the monitoring instrument, a monitoring component arranged in the containing box and used for real-time monitoring of current intensity changes, and a feedback component for reflecting current intensity changes; wherein the monitoring component comprises: a magnet block arranged in the containing box and forming a magnetic field, and a conductive straight rod for generating Ampere force by being acted upon by the magnetic field formed by the magnet block after power is supplied, wherein the conductive straight rod is electrically connected to the signal input line; and the feedback component is a pressure sensor for measuring and transmitting the magnitude of the Ampere force exerted on the conductive straight rod.

[0005] To implement the above technical solution, the current of the protector is transmitted into the monitoring instrument through the signal input line, and the current flows through the conductive straight rod. The energized conductive straight rod is acted upon by the Ampere force in the magnetic field formed by the magnet block, and then the pressure sensor is used to measure and transmit the magnitude of the Ampere force. When the current flowing through the protector changes, the magnitude of the Ampere force exerted on the conductive straight rod will also change accordingly. The change in the magnitude of the Ampere force can be measured and transmitted by the pressure sensor to reflect the change in current, thereby monitoring the current flowing through the composite monitoring type voltage limiting device in real time.

[0006] As a preferred solution of the present invention, the magnet block includes an N-pole magnet and an S-pole magnet, the N-pole magnet is arranged on the top wall of the inner cavity of the containing box, and the S-pole magnet is arranged on the bottom wall of the inner cavity of the containing box, and corresponding mounting holes are opened on both side walls of the containing box, and the axis of the mounting hole is perpendicular to the magnetic flux lines formed by the magnet block, and one end of the conductive straight rod is located outside the side wall of one side of the containing box and the other end passes through the mounting hole and extends to the outside of the other side wall of the containing box.

[0007] As a preferred solution of the present invention, the pressure sensor is in the shape of a ring, the conductive straight rod is in the shape of a cylinder, the outer diameter of the pressure sensor is the same as the diameter of the mounting hole and the inner diameter is the same as the diameter of the conductive straight rod, the pressure sensor is embedded in the mounting hole, and the conductive straight rod is plugged into the pressure sensor.

[0008] To implement the above technical solution, the N-pole magnet and the S-pole magnet form a vertically downward magnetic field, and the conductive straight rod is placed horizontally and perpendicular to the direction of the magnetic field lines. When current flows through the conductive straight rod, the conductive straight rod is subjected to the horizontal Ampere force in the magnetic field, thereby squeezing the pressure sensor. The pressure sensor measures and transmits the obtained data related to the Ampere force. When the current flowing through the conductive straight rod changes, the Ampere force exerted on the conductive straight rod will also change accordingly. By measuring and analyzing the size of the Ampere force, real-time monitoring of the current flowing through the composite monitoring type voltage limiting device can be completed.

[0009] As a preferred solution of the present invention, the monitoring instrument also includes: a data processing unit, a human-computer interaction interface, an operation indicator light, an aging indicator light, and an action indicator light, and the data processing unit is electrically connected to the human-computer interaction interface, the operation indicator light, the aging indicator light, and the action indicator light, respectively.

[0010] As a preferred solution of the present invention, the data processing unit is electrically connected to the pressure sensor.

[0011] To implement the above technical solution, the data measured by the pressure sensor is transmitted to the data processing unit, which is then processed by the data processing unit and transmitted to each display unit, so that users can more conveniently monitor the operating status of the composite monitoring type voltage limiting device in real time, predict abnormal conditions before accidents, prevent accidents, and improve the reliability of power system operation.

[0012] As a preferred solution of the present invention, the material of the accommodating box is Permalloy.

[0013] The implementation of the above technical solution can effectively prevent the magnetic field in the accommodating box from being affected by the magnetic field formed by the current in the lines at both ends of the conductive straight rod, thereby ensuring that the Ampere force generated by the magnetic field in the accommodating box on the conductive straight rod is accurate.

[0014] In summary, the present invention has the following beneficial effects: The current flowing through the protector is transmitted into the monitoring instrument through the signal input line. The current flows through the conductive straight rod, and the N-pole magnet and the S-pole magnet form a vertical downward magnetic field. The conductive straight rod is placed horizontally and perpendicular to the direction of the magnetic field line. When the current flows through the conductive straight rod, the conductive straight rod is subjected to the horizontal Ampere force in the magnetic field, thereby squeezing the pressure sensor. The pressure sensor measures and transmits the obtained data related to the Ampere force. When the current flowing through the conductive straight rod changes, the Ampere force exerted on the conductive straight rod will also change accordingly. By measuring and analyzing the size of the Ampere force, real-time monitoring of the current flowing through the composite monitoring type voltage limiting device can be completed. The data measured by the pressure sensor is transmitted to the data processing unit, and then processed by the data processing unit and transmitted to each display unit, so that users can more conveniently monitor the operating status of the composite monitoring type voltage limiting device in real time, so as to predict abnormal conditions before accidents, prevent accidents, and improve the reliability of power system operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the present invention.

[0017] Figure 2 It is a three-dimensional schematic diagram of the monitoring mechanism in the embodiment of the present invention.

[0018] Figure 3 It is a cross-sectional view of the monitoring mechanism in an embodiment of the present invention.

[0019] The numbers and letters in the figure represent the corresponding component names: 1. Monitoring instrument; 2. Container box; 3. Magnet block; 4. Conductive straight rod; 5. Pressure sensor; 6. Mounting hole; 7. Human-computer interaction interface; 8. Operation indicator light; 9. Aging indicator light; 10. Action indicator light. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0021] like Figures 1 to 3 As shown, the present invention provides an online monitoring instrument, including: a monitoring instrument 1, and a monitoring mechanism, the monitoring instrument 1 is connected to the protector through a signal input line, the monitoring mechanism includes: a containing box 2, a monitoring component, and a feedback component, the containing box 2 is fixed in the monitoring instrument 1, the detection instrument includes: a magnet block 3, and a conductive straight rod 4, the magnet block 3 includes an N-pole magnet and an S-pole magnet, the N-pole magnet is arranged on the top wall of the inner cavity of the containing box 2, the S-pole magnet is arranged on the bottom wall of the inner cavity of the containing box 2, and corresponding mounting holes 6 are opened on both side walls of the containing box 2, the axis of the mounting hole 6 is perpendicular to the magnetic flux lines formed by the magnet block 3, one end of the conductive straight rod 4 is located outside the side wall of one side of the containing box 2 and the other end passes through the mounting hole 6 and extends to the outside of the other side wall of the containing box 2, the conductive straight rod 4 is electrically connected to the signal input line, so that the current in the protector flows through the conductive straight rod 4.

[0022] The feedback component is a pressure sensor 5, which is in the shape of a ring, and the conductive straight rod 4 is in the shape of a cylinder. The outer diameter of the pressure sensor 5 is the same as the diameter of the mounting hole 6, and the inner diameter is the same as the diameter of the conductive straight rod 4. The pressure sensor 5 is embedded in the mounting hole 6, and the conductive straight rod 4 is plugged into the pressure sensor 5. The energized conductive straight rod 4 is acted upon by the Ampere force in the magnetic field formed by the magnet block 3, and the pressure sensor 5 is used to measure and transmit the magnitude of the Ampere force. When the current flowing through the protector changes, the magnitude of the Ampere force exerted on the conductive straight rod 4 will also change accordingly. The change in the magnitude of the Ampere force can be measured and transmitted by the pressure sensor 5 to reflect the change in current, and the current flowing through the composite monitoring type voltage limiting device can be monitored in real time.

[0023] Furthermore, the material of the accommodating box 2 is Permalloy, which effectively prevents the magnetic field in the accommodating box 2 from being affected by the magnetic field formed by the current in the lines at both ends of the conductive straight rod 4, ensuring that the Ampere force generated by the magnetic field in the accommodating box 2 on the conductive straight rod 4 is accurate.

[0024] Furthermore, the monitoring instrument 1 also includes: a data processing unit, a human-machine interaction interface 7, an operation indicator light 8, an aging indicator light 9, and an action indicator light 10. The data processing unit is electrically connected to the human-machine interaction interface 7, the operation indicator light 8, the aging indicator light 9, and the action indicator light 10 respectively. The data processing unit is electrically connected to the pressure sensor 5. The data measured by the pressure sensor 5 is transmitted to the data processing unit, and then processed by the data processing unit and transmitted to each display unit, so that the user can more conveniently monitor the operation status of the composite monitoring type voltage limiting device in real time, so as to predict abnormal conditions before accidents, prevent accidents, and improve the reliability of power system operation. When the monitoring instrument 1 is powered on and working normally, the operation indicator light 8 is on, and the pressure value corresponding to each current size and the corresponding current signal are pre-set. After the pressure sensor 5 transmits the measured data to the data processing unit, the data processing unit judges the current signal. If it is an aging leakage current, it is displayed on the human-machine interaction interface 7, and the aging indicator light 9 flashes. The maintenance personnel query the degree of damage of the protector through the human-machine interaction interface 7; if it is an action current, the action indicator light 10 flashes, and the number and time of actions can be queried through the human-machine interaction interface 7.

[0025] In the embodiment of the present invention, the current flowing through the protector is transmitted into the monitoring instrument 1 through the signal input line. The current flows through the conductive straight rod 4. The N-pole magnet and the S-pole magnet form a vertically downward magnetic field. The conductive straight rod 4 is placed horizontally and perpendicular to the direction of the magnetic field lines. When the current flows through the conductive straight rod 4, the conductive straight rod 4 is subjected to the horizontal Ampere force in the magnetic field, thereby squeezing the pressure sensor 5. The pressure sensor 5 measures and transmits the obtained data related to the Ampere force. When the current flowing through the conductive straight rod 4 changes, the Ampere force exerted on the conductive straight rod 4 will also change accordingly. The real-time monitoring of the current flowing through the composite monitoring type voltage limiting device can be completed by measuring and analyzing the size of the Ampere force. The data measured by the pressure sensor 5 is transmitted to the data processing unit, and then processed by the data processing unit and transmitted to each display unit, so that the user can more conveniently monitor the operating status of the composite monitoring type voltage limiting device in real time, so as to predict abnormal conditions before accidents, prevent accidents, and improve the reliability of power system operation.

[0026] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may 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 rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An online monitoring instrument, characterized in that: include: A monitoring instrument, wherein the monitoring instrument is connected to the protector via a signal input line; as well as, A monitoring mechanism fixedly arranged in the monitoring instrument for detecting current intensity, the monitoring mechanism comprising: a containing box fixedly arranged in the monitoring instrument, a monitoring component arranged in the containing box and used for real-time monitoring of current intensity changes, and a feedback component for reflecting current intensity changes; Among them, the monitoring component includes: a magnet block arranged in the accommodating box and forming a magnetic field, and a conductive straight rod used to generate Ampere force when powered on and acted upon by the magnetic field formed by the magnet block, and the conductive straight rod is electrically connected to the signal input line; the feedback component is a pressure sensor used to measure and transmit the magnitude of the Ampere force exerted on the conductive straight rod.

2. An online monitoring instrument according to claim 1, characterized in that: The magnet block includes an N-pole magnet and an S-pole magnet, the N-pole magnet is arranged on the top wall of the inner cavity of the accommodating box, and the S-pole magnet is arranged on the bottom wall of the inner cavity of the accommodating box. Corresponding mounting holes are opened on both side walls of the accommodating box, and the axis of the mounting hole is perpendicular to the magnetic flux lines formed by the magnet block. One end of the conductive straight rod is located outside the side wall of one side of the accommodating box and the other end passes through the mounting hole and extends to the outside of the other side wall of the accommodating box.

3. An online monitoring instrument according to claim 2, characterized in that: The pressure sensor is in the shape of a ring, the conductive straight rod is in the shape of a cylinder, the outer diameter of the pressure sensor is the same as the diameter of the mounting hole and the inner diameter is the same as the diameter of the conductive straight rod, the pressure sensor is embedded in the mounting hole, and the conductive straight rod is plugged into the pressure sensor.

4. The online monitoring instrument according to claim 1, characterized in that: The monitoring instrument also includes: a data processing unit, a human-computer interaction interface, an operation indicator light, an aging indicator light, and an action indicator light. The data processing unit is electrically connected to the human-computer interaction interface, the operation indicator light, the aging indicator light, and the action indicator light, respectively.

5. An online monitoring instrument according to claim 4, characterized in that , the data processing unit is electrically connected to the pressure sensor.

6. The online monitoring instrument according to claim 1, characterized in that: The material of the accommodating box is Permalloy.

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