Distribution transformer decompression backward fault point control device

Abstract

The invention provides a distribution transformer voltage loss back-stepping fault point control device, which comprises a power taking module, and is characterized in that the power taking module is connected with a first switch module and an input voltage detection module; the first switch module is connected with a battery, the battery is connected with a voltage control module, and the voltage control module is connected with a report control module; the input voltage detection module is connected with the first switch module, the input voltage detection module is used for comparing a preset voltage value with a voltage value output by the power taking module, and when the voltage value output by the power taking module reaches the preset voltage value, the first switch module is controlled to be switched on and a switch-on signal is output to the report control module; when the voltage value output by the power taking module does not reach the preset voltage value, the first switch module is controlled to be disconnected and no longer outputs a connection signal to the report control module; according to the invention, after the line loses power, sufficient power can be provided so as to send data such as a power-losing message and the like, and sufficient data support is provided for subsequent backward deduction of a distribution transformer voltage-loss fault point.

Description

Technical Field

[0001] The invention belongs to the field of distribution network monitoring, and in particular relates to a distribution transformer voltage loss reverse fault point control device. Background Art

[0002] With the development of the economy and society and the improvement of people's living standards, users have higher and higher requirements for power supply reliability. The current fault handling of the distribution network is based on FTU and DTU data, but there are not many FTU and DTU terminals in the current distribution network, and many feeders have only one. Affected by the configuration range of distribution terminals and the operation quality of terminals, the fault location range is large and inaccurate.

[0003] In the prior art, a Chinese invention patent application with application publication number CN109470910A discloses a distribution network power failure detection system and method, including a remote monitoring terminal and a plurality of detection terminals, the detection terminal including a power failure detection unit arranged on a transmission line and a transmission unit arranged on a transmission line tower, the power failure detection unit including a power taking module, a detection module and a wireless module, the transmission unit communicates with the power failure detection unit via wireless, the transmission unit communicates with the remote monitoring terminal via a network, and the power failure detection unit is fixed on the transmission line via a fixing device; it is charged by a supercapacitor during operation, and after the line loses power, it temporarily operates through a supercapacitor discharge processor and a wireless module to send a power failure message, and the supercapacitor discharge speed is relatively fast, and when a power failure message occurs, it is easy to cause the power failure message to be interrupted due to power interruption, which affects the reporting of power failure data and is not conducive to the subsequent reverse deduction of the distribution transformer voltage loss fault point.

[0004] Therefore, it is necessary to design a distribution transformer undervoltage reverse fault point control device that can provide sufficient power after the line loses power to send power loss messages and other data, and provide sufficient data support for subsequent reverse calculation of the distribution transformer undervoltage fault point to solve the current technical problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a distribution transformer voltage loss fault point control device which can provide sufficient power after a line power failure to send power loss messages and other data, thereby providing sufficient data support for subsequent reverse analysis of the distribution transformer voltage loss fault point.

[0006] The technical solution of the present invention is: a distribution transformer undervoltage reverse fault point control device, comprising a power taking module, the power taking module is connected to a first switch module and an input voltage detection module; The first switch module is connected to a battery, the battery is connected to a voltage control module, and the voltage control module is connected to a reporting control module; The input voltage detection module is connected to the first switch module, and the input voltage detection module is used to compare a preset voltage value with the voltage value output by the power taking module. When the voltage value output by the power taking module reaches the preset voltage value, the first switch module is controlled to be turned on and output a connection signal to the reporting control module. When the voltage value output by the power taking module does not reach the preset voltage value, the first switch module is controlled to be turned off and no longer output a connection signal to the reporting control module.

[0007] The battery is connected with a charging protection control module, and the charging protection control module is used to control the on and off of the first switch module according to the battery voltage.

[0008] A second switch module is connected in series between the first switch module and the battery. A charge and discharge protection control module is connected to the battery. The charge and discharge protection control module is used to control the on and off of the second switch module according to the status information of the battery.

[0009] The reporting control module has a central control unit, the central control unit is connected to a wireless communication unit, and the wireless communication unit is connected to a background server through a wireless network.

[0010] The power taking module comprises a power taking coil assembly, the power taking coil assembly is connected to a rectifier circuit, and the rectifier circuit is connected to a voltage stabilizing circuit.

[0011] The power taking coil assembly includes an upper shell and a lower shell, the upper shell is hinged to one end of the lower shell, and the other end of the upper shell is detachably fixedly connected to the lower shell. An upper magnetic core is arranged inside the upper shell, and a lower magnetic core is arranged inside the lower shell. A coil is arranged on the upper magnetic core or the lower magnetic core, and the coil is connected to the rectifier circuit.

[0012] Both sides of the upper shell and the lower shell are provided with clamps, and the clamps are used to clamp and fix on the outside of the wire.

[0013] Supports are fixedly provided on both sides of the upper shell and the lower shell, and a screw is threadedly connected in the support. An upper clamping plate is rotatably provided on the end of the screw on one side of the upper shell close to the lower shell, and a lower clamping plate is rotatably provided on the end of the screw on one side of the lower shell close to the upper shell, two side clamping plates are symmetrically provided on both sides of the bottom of the upper clamping plate, and side clamping rods are symmetrically provided on both ends of the lower clamping plate.

[0014] A guide rod parallel to the screw rod is slidably arranged in the support, and one end of the guide rod is fixedly connected to the corresponding upper clamping plate or lower clamping plate.

[0015] The upper shell is hinged to one end of the lower shell, and the other ends of the upper shell and the lower shell are respectively provided with an upper connecting plate and a lower connecting plate, and the upper connecting plate and the lower connecting plate are detachably fixedly connected by connecting bolts.

[0016] Beneficial effects of the present invention: (1) In the present invention, power is taken through the power taking module, and the input voltage detection module determines the voltage value output by the power taking module. When the voltage value output by the power taking module reaches a preset voltage value, the voltage detection module controls the first switch module to be turned on and outputs a connection signal to the reporting control module. At this time, the battery can be charged. When the voltage value output by the power taking module does not reach the preset voltage value, the voltage detection module controls the first switch module to be turned off and no longer outputs a connection signal to the reporting control module. At this time, the reporting control module 9 uses the battery to supply power and sends a power outage message to the background service; (2) After the line loses power, the battery can provide sufficient power to the reporting control module so that the reporting control module has enough power to completely send the power failure message and other data, providing sufficient data support for the subsequent reverse analysis of the distribution transformer voltage loss fault point. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The schematic diagram is a principle block diagram of an implementation of the distribution transformer voltage loss reverse fault point control device in the present invention.

[0018] Figure 2 It is a principle block diagram of another implementation manner of the distribution transformer voltage loss reverse fault point control device in the present invention.

[0019] Figure 3 This is a principle block diagram of the power extraction module in the present invention.

[0020] Figure 4 It is a principle block diagram of the reporting control module in the present invention.

[0021] Figure 5 This is one of the structural schematic diagrams of the power extraction coil assembly in the present invention.

[0022] Figure 6 This is the second structural schematic diagram of the power extraction coil assembly in the present invention.

[0023] Figure 7 It is a schematic diagram of the structure of the clamp in the present invention. DETAILED DESCRIPTION

[0024] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present invention and its application or use. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete and to fully express the scope of the present invention to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, rather than as limitations.

[0025] The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] like Figure 1 As shown, the distribution transformer voltage loss reverse fault point control device includes a power taking module 1, the power taking module 1 is connected to a first switch module 2 and an input voltage detection module 3; the first switch module 2 is connected to a battery 6, the battery 6 is connected to a voltage control module 8, and the voltage control module 8 is connected to a reporting control module 9; the input voltage detection module 3 is connected to the first switch module 2, and the input voltage detection module 3 is used to compare a preset voltage value with a voltage value output by the power taking module 1. When the voltage value output by the power taking module 1 reaches the preset voltage value, the voltage detection module 3 controls the first switch module 2 to turn on and output a connection signal to the reporting control module 9. When the voltage value output by the power taking module 1 does not reach the preset voltage value, the voltage detection module 3 controls the first switch module 2 to turn off and no longer outputs a connection signal to the reporting control module 9; in this embodiment In the example, power is drawn through the power-drawing module 1, and the input voltage detection module 3 determines the voltage value output by the power-drawing module 1. When the voltage value output by the power-drawing module 1 reaches the preset voltage value, the voltage detection module 3 controls the first switch module 2 to be turned on and outputs a connection signal to the reporting control module 9. At this time, the battery 6 can be charged. When the voltage value output by the power-drawing module 1 does not reach the preset voltage value, the voltage detection module 3 controls the first switch module 2 to be disconnected and no longer outputs a connection signal to the reporting control module 9. At this time, the reporting control module 9 uses the battery 6 for power supply and sends a power outage message to the background service; after the line loses power, the battery 6 can provide sufficient power to the reporting control module 9 so that the reporting control module 9 has enough power to completely send the power outage message and other data, thereby providing sufficient data support for the subsequent reverse analysis of the distribution transformer voltage loss fault point.

[0027] In some embodiments, a charging protection control module 5 is connected to the battery 6. The charging protection control module 5 is used to control the on and off of the first switch module 2 according to the voltage of the battery 6. The voltage value of the battery 6 when it is fully charged is set as a set value. During the charging process of the battery 6, the charging protection control module 5 collects the voltage value of the battery 6 in real time. When the real-time voltage value collected by the charging protection control module 5 reaches the set value, the charging protection control module 5 controls the first switch module 2 to disconnect and no longer charge the battery 6, so as to avoid overcharging of the battery 6 and affecting its life; when the real-time voltage value collected by the charging protection control module 5 reaches the set lower limit value, the charging protection control module 5 controls the first switch module 2 to connect and resume charging the battery 6.

[0028] In some embodiments, Figure 2 As shown, a second switch module 4 is connected in series between the first switch module 2 and the battery 6, and a charge and discharge protection control module 7 is connected to the battery 6. The charge and discharge protection control module 7 is used to control the on and off of the second switch module 4 according to the status information of the battery 6; when the battery 6 is normally charged and discharged, the charge and discharge protection control module 7 controls the second switch module 4 to be turned on, and when the battery 6 is in an abnormal state, the second switch module 4 is controlled to be turned off, thereby further improving the safety of the use of the battery 6.

[0029] In some embodiments, Figure 4 As shown, the reporting control module 9 has a central control unit 91, and a wireless communication unit 92 is connected to the central control unit 91. The wireless communication unit 92 is connected to the background server through a wireless network; the input end of the central control unit 91 is connected to the input voltage detection module 3. When the input voltage at the power supply module 1 exists, the voltage detection module 3 maintains an output state to the input end of the central control unit 91. When a power failure occurs, the input voltage at the power supply module 1 disappears, and the voltage detection module 3 no longer outputs to the input end of the central control unit 91. At this time, the central control unit 91 determines that a power failure has occurred, and sends a power failure message to the background server through the wireless communication unit 92.

[0030] In some embodiments, Figure 3 As shown, the power taking module 1 has a power taking coil assembly 11, to which a rectifier circuit 12 is connected. The rectifier circuit 12 is used to convert the alternating current output by the power taking coil assembly 11 into direct current. The rectifier circuit 12 is connected to a voltage stabilizing circuit 13. The voltage stabilizing circuit 13 can keep its output voltage basically unchanged when the output voltage of the rectifier circuit 12 fluctuates or the load changes.

[0031] In some embodiments, Figures 5 to 7As shown, the power coil assembly 11 includes an upper shell 111 and a lower shell 112. The upper shell 11 is hinged to one end of the lower shell, and the other end of the upper shell 111 is detachably fixedly connected to the lower shell 112. An upper magnetic core 113 is arranged inside the upper shell 111, and a lower magnetic core 114 is arranged inside the lower shell 112. A coil 115 is arranged on the upper magnetic core 113 or the lower magnetic core 114, and the coil 115 is connected to the rectifier circuit 12; the upper shell 111 and the lower shell 112 are sleeved on the outside of the conductor of the line. When the guide of the line is energized, induced electricity is generated in the coil 115 and output to the rectifier circuit 12.

[0032] In some embodiments, clamps 14 are provided on both sides of the upper shell 111 and the lower shell 112 , and the clamps 14 are used to clamp and fix on the outside of the wire, so as to achieve fast and stable fixation of the power taking coil assembly 11 on the wire.

[0033] In some embodiments, a support 141 is fixedly provided on both sides of the upper shell 111 and the lower shell 112, and a screw 147 is threadedly connected in the support 141. An upper clamping plate 142 is rotatably provided on one end of the screw 147 on one side of the upper shell 111 close to the lower shell 112, and a lower clamping plate 143 is rotatably provided on one end of the screw 147 on one side of the lower shell 112 close to the upper shell 11. Two side clamping plates 144 are symmetrically provided on both sides of the bottom of the upper clamping plate 142, and the lower clamping plate 143 is rotatably provided on one end of the screw 147 on one side of the lower shell 112 close to the upper shell 11. Side clamping rods 145 are symmetrically arranged at both ends of the plate 143; by rotating the screw rod 147, the threaded structure between the screw rod 147 and the support 141 cooperates, and the screw rod 147 can be driven to drive the upper clamping plate 142 and the lower clamping plate 143 to move, and the upper clamping plate 142 and the lower clamping plate 143 are adjusted to be close, and through the side clamping plate 144 and the side clamping rod 145, it can be clamped and fixed on the outside of the conductor to realize the fixation of the distribution transformer undervoltage reverse fault point control device on the conductor.

[0034] In some embodiments, a guide rod 146 parallel to the screw rod 147 is slidably arranged in the support 141, and one end of the guide rod 146 is fixedly connected to the corresponding upper clamp plate 142 or lower clamp plate 143. The setting of the guide rod 146 can improve the stability of the upper clamp plate 142 or lower clamp plate 143 moving up and down.

[0035] In some embodiments, the upper shell 111 is hinged to one end of the lower shell 112, and the other ends of the upper shell 111 and the lower shell 112 are respectively provided with an upper connecting plate 117 and a lower connecting plate 118. The upper connecting plate 117 and the lower connecting plate 118 are detachably fixedly connected by connecting bolts 119. By removing the connecting bolts 119, the upper connecting plate 117 and the lower connecting plate 118 can be separated, so that the upper shell 111 and the lower shell 112 can be conveniently installed on the outside of the line conductor, or the upper shell 111 and the lower shell 112 can be removed from the outside of the line conductor.

[0036] So far, various embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0037] The above-mentioned embodiments only express some implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A distribution transformer undervoltage reverse fault point control device, characterized in that: It includes a power supply module, to which a first switch module and an input voltage detection module are connected; the first switch module is connected to a battery, the battery is connected to a voltage control module, and the voltage control module is connected to a reporting control module; the input voltage detection module is connected to the first switch module, and the input voltage detection module is used to compare a preset voltage value with the voltage value output by the power supply module, and when the voltage value output by the power supply module reaches the preset voltage value, the first switch module is controlled to be turned on and a connection signal is output to the reporting control module, and when the voltage value output by the power supply module does not reach the preset voltage value, the first switch module is controlled to be turned off and no longer output a connection signal to the reporting control module.

2. The distribution transformer undervoltage reverse fault point control device according to claim 1 is characterized in that: The battery is connected with a charging protection control module, and the charging protection control module is used to control the on and off of the first switch module according to the battery voltage.

3. The distribution transformer undervoltage reverse fault point control device according to claim 1 is characterized in that: A second switch module is connected in series between the first switch module and the battery. A charge and discharge protection control module is connected to the battery. The charge and discharge protection control module is used to control the on and off of the second switch module according to the status information of the battery.

4. The distribution transformer undervoltage reverse fault point control device according to claim 1 is characterized in that: The reporting control module has a central control unit, the central control unit is connected to a wireless communication unit, and the wireless communication unit is connected to a background server through a wireless network.

5. The distribution transformer undervoltage reverse fault point control device according to claim 1 is characterized in that: The power taking module comprises a power taking coil assembly, the power taking coil assembly is connected to a rectifier circuit, and the rectifier circuit is connected to a voltage stabilizing circuit.

6. The distribution transformer undervoltage reverse fault point control device according to claim 5 is characterized in that: The power taking coil assembly includes an upper shell and a lower shell, the upper shell is hinged to one end of the lower shell, and the other end of the upper shell is detachably fixedly connected to the lower shell. An upper magnetic core is arranged inside the upper shell, and a lower magnetic core is arranged inside the lower shell. A coil is arranged on the upper magnetic core or the lower magnetic core, and the coil is connected to the rectifier circuit.

7. The distribution transformer undervoltage reverse fault point control device according to claim 6 is characterized in that: Both sides of the upper shell and the lower shell are provided with clamps, and the clamps are used to clamp and fix on the outside of the wire.

8. The distribution transformer undervoltage reverse fault point control device according to claim 7 is characterized in that: Supports are fixedly provided on both sides of the upper shell and the lower shell, and a screw is threadedly connected in the support. An upper clamping plate is rotatably provided on the end of the screw on one side of the upper shell close to the lower shell, and a lower clamping plate is rotatably provided on the end of the screw on one side of the lower shell close to the upper shell, two side clamping plates are symmetrically provided on both sides of the bottom of the upper clamping plate, and side clamping rods are symmetrically provided on both ends of the lower clamping plate.

9. The distribution transformer undervoltage reverse fault point control device according to claim 8 is characterized in that: A guide rod parallel to the screw rod is slidably arranged in the support, and one end of the guide rod is fixedly connected to the corresponding upper clamping plate or lower clamping plate.

10. The distribution transformer undervoltage reverse fault point control device according to claim 8, characterized in that: The upper shell is hinged to one end of the lower shell, and the other ends of the upper shell and the lower shell are respectively provided with an upper connecting plate and a lower connecting plate, and the upper connecting plate and the lower connecting plate are detachably fixedly connected by connecting bolts.

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