Pole-mounted circuit breaker integrating power taking and traveling wave distance measurement

Abstract

The invention belongs to the technical field of pole-mounted circuit breakers in power systems, and particularly relates to a pole-mounted circuit breaker integrating electricity taking and traveling wave distance measurement. The high-voltage fuse is connected with an integrated capacitor or a high-voltage sampling capacitor, and the high-voltage sampling capacitor is arranged on a wire inlet side and a wire outlet side; the integrated capacitor is arranged on the wire inlet side in the A-phase solid-sealed polar pole and the B-phase solid-sealed polar pole, and is arranged on the wire outlet side in the C-phase solid-sealed polar pole; the integrated capacitor is connected with the secondary circuit module in the box body, the capacitors C2 and C3 are connected with the transformer T2 in series, the power frequency electricity taking transformer T1 is connected to the C2 and C3 in parallel, and the secondary side of the T1 is connected with the electricity taking circuit; the protection circuit is connected to the C3 in parallel; and the traveling wave acquisition circuit is connected with the secondary side output winding of the T2. According to the invention, self-power-taking power supply for the power distribution terminal and acquisition of voltage and current traveling wave signals for fault point positioning judgment are realized, the operation efficiency and reliability of the power distribution network are improved, and powerful guarantee is provided for construction of the intelligent power distribution network.

Description

Technical Field

[0001] The present invention belongs to the technical field of pole-mounted circuit breakers in power systems, and in particular relates to a pole-mounted circuit breaker integrating power extraction and traveling wave ranging. Background Art

[0002] At present, the existing pole-mounted circuit breakers, whether electromagnetic combination or electronic combination, have voltage and current sampling, and their power supply mode is a separate external voltage transformer. In practical application, it is necessary to configure a pole-mounted circuit breaker and an incoming line voltage transformer and an outgoing line voltage transformer for power supply. This circuit breaker combination is large in size and heavy in weight, and the installation and maintenance are more complicated. In addition, with the continuous development of intelligent distribution network, how to solve the line fault in the distribution network is also a problem that needs to be solved urgently. The existing typical and effective fault location method in the industry is the traveling wave ranging method. In the distribution network, there is generally only a measuring device at the substation end. If the traveling wave method is to be applied to the distribution network cable fault ranging, it is necessary to configure the measuring device at more locations, which not only increases the cost, but also may cause time synchronization problems. The conventional practice is to use a separate fault traveling wave ranging device, which is installed on the conductor of the distribution line and is responsible for automatically identifying the fault traveling wave current, power frequency current and ground electric field signal, collecting and storing waveform data, and uploading the data to the power system master station by wireless communication. The main station of the power system determines the range and location of the fault based on the principle of traveling wave ranging by calculating the time difference of the traveling waves received on both sides of the fault point; however, the limitation of this solution is that a large number of devices need to be installed separately, which is not industry-friendly in terms of economic benefits, implementation complexity, and maintenance complexity.

[0003] In summary, the existing pole-mounted circuit breakers, whether electromagnetic or electronic, use a separate external voltage transformer for power supply, and a separate fault traveling wave ranging device for fault location. There are the following problems: the combination of the circuit breaker and the external voltage transformer is large and heavy, and the installation and maintenance are complicated; the separate fault traveling wave ranging device needs to be installed in large quantities, which increases the cost, implementation complexity and maintenance complexity, and may cause time synchronization problems. Based on this, how to design a pole-mounted circuit breaker that integrates power supply and traveling wave ranging sensor is an important topic in the current intelligent distribution network. Summary of the invention

[0004] In order to solve the problems existing in the prior art, the present invention provides a pole-mounted circuit breaker integrating power supply and traveling wave ranging.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows: a pole-mounted circuit breaker integrating power collection and traveling wave ranging, comprising: three poles and a box body for controlling the opening and closing of the poles, the three poles are a C-phase solid-sealed pole, a B-phase solid-sealed pole and an A-phase solid-sealed pole, each pole has a built-in vacuum arc chamber, the vacuum arc chamber is connected in series to the incoming line and the outgoing line, and the bottom of the vacuum arc chamber is interconnected with the operating mechanism in the box body through an insulating pull rod; the combined sensor sleeve is hung on the outgoing line guide rod, and the collection of current industrial frequency signals and current traveling wave signals is realized by coupling; the incoming line and the outgoing line of each pole are connected to the high-voltage fuse through a conductive connecting rod, The high-voltage fuse is connected to an integrated capacitor or a high-voltage voltage sampling capacitor through a conductive connecting rod. The high-voltage voltage sampling capacitor is arranged on the incoming line side and the outgoing line side on each pole; the integrated capacitor is installed on the incoming line side in the A-phase solid-sealed pole and the B-phase solid-sealed pole, and is installed on the outgoing line side in the C-phase solid-sealed pole; the integrated capacitor is connected to the secondary circuit module in the box, in which capacitors C2 and C3 are connected in series with transformer T2, the industrial frequency power transformer T1 is connected in parallel to C2 and C3, and the secondary side of T1 is connected to the power-taking circuit; the protection circuit is connected in parallel to C3; the traveling wave acquisition circuit is connected to the secondary side output winding of T2.

[0006] Furthermore, in the A-phase solid-sealed pole and the B-phase solid-sealed pole, the incoming line is connected to the integrated capacitor through a high-voltage fuse, and the outgoing line is connected to the high-voltage voltage sampling capacitor on the outgoing side through a high-voltage fuse; in the C-phase solid-sealed pole, the incoming line is connected to the high-voltage voltage sampling capacitor on the incoming side through a high-voltage fuse, and the outgoing line is connected to the integrated capacitor through a high-voltage fuse.

[0007] Furthermore, the integrated capacitor is an integrated capacitor for high voltage power supply and voltage traveling wave collection, and the capacitor type can be selected from ceramic capacitors or film capacitors.

[0008] Further, the combined sensor is a combination of a current transformer and a current traveling wave sensor.

[0009] Furthermore, a capacitor shielding cover is installed inside the integrated capacitor and the high voltage sampling capacitor.

[0010] Furthermore, a spring operating mechanism is built into the box body, and the spring operating mechanism is connected to the vacuum interrupter through an insulating pull rod.

[0011] Furthermore, the output end of the secondary circuit in the secondary circuit module is connected to an aviation plug terminal, and the aviation plug terminal is located on the box body.

[0012] Furthermore, the box body is provided with opening and closing handles, which are connected to the spring operating mechanism, and the closing and opening of the switch are achieved by rotation or push-pull.

[0013] Furthermore, an energy storage handle is provided on the box body, and the energy storage handle is used to store mechanical energy in the mechanical energy storage system.

[0014] Furthermore, an energy storage mark and an opening and closing indication mark are also provided on the box body.

[0015] Compared with the prior art, the present invention has the following beneficial effects: by integrating the power supply function into the circuit breaker body and replacing the combination of the circuit breaker and the voltage transformer, the system's installation convenience and maintenance convenience are improved, and the service life is extended; the built-in traveling wave ranging sensor replaces the traditional single equipment, which reduces the cost, reduces the complexity of implementation and maintenance, and improves the accuracy and timeliness of fault location; on the basis of having basic electronic voltage and current sampling and opening and closing functions, it realizes self-power supply to the distribution terminal and collects voltage and current traveling wave signals for fault point location judgment, thereby improving the operating efficiency and reliability of the distribution network and providing strong guarantee for the construction of intelligent distribution network. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the circuit breaker on the center column of the present invention;

[0017] Figure 2 for Figure 1 Diagram of the internal structure of the circuit breaker on the center column;

[0018] Figure 3 It is a schematic diagram of the internal structure of the sealed pole;

[0019] Figure 4 Schematic diagram of the internal structure of the box;

[0020] Figure 5 It is the design diagram of a single sealed pole and secondary circuit;

[0021] Figure 6 It is the multifunctional operation and state transition diagram of the power grid operation process.

[0022] In the figure: 1. C-phase solid-sealed pole, 2. B-phase solid-sealed pole, 3. A-phase solid-sealed pole, 4. Vacuum interrupter, 5. Combined sensor, 6. High-voltage fuse, 7. Integrated capacitor, 8. High-voltage voltage sampling capacitor, 9. Box, 10. Secondary side sampling circuit, 11. Incoming terminal, 13. Capacitor shielding cover, 17. Opening and closing handles, 18. Spring operating mechanism, 19. Energy storage mark, 20. Energy storage handle, 21. Opening and closing indication mark, 22. Secondary circuit module, 23. Aviation plug terminal. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0024] Example 1: Combination Figure 1-5 Understanding, among others, Figure 2 From left to right in the figure are the C-phase solid-sealed pole 1, the B-phase solid-sealed pole 2 and the A-phase solid-sealed pole 3. A pole-mounted circuit breaker integrating power supply and traveling wave ranging, comprising: three poles and a box 9 for controlling the opening and closing of the poles, the three poles being the C-phase solid-sealed pole 1, the B-phase solid-sealed pole 2 and the A-phase solid-sealed pole 3, each pole having a built-in vacuum arc chamber 4, the vacuum arc chamber 4 being connected in series between the incoming line and the outgoing line, the bottom of the vacuum arc chamber 4 being interconnected with the operating mechanism in the box 9 through an insulating pull rod; a set of combined sensors 5 are hung on the outgoing line guide rod, and the collection of the current industrial frequency signal and the collection of the current traveling wave signal are realized by coupling; the incoming line and the outgoing line of each pole are connected to the high-voltage fuse 6 through a conductive connecting rod, and the high-voltage fuse 6 is connected to the integrated capacitor 7 or the high-voltage voltage sampling capacitor 8 through a conductive connecting rod, and the high-voltage voltage sampling The sample capacitor 8 is arranged on the incoming line side and the outgoing line side on each pole; the integrated capacitor 7 is installed on the incoming line side in the A-phase solid-sealed pole 3 and the B-phase solid-sealed pole 2, and is installed on the outgoing line side in the C-phase solid-sealed pole 1; the integrated capacitor 7 is connected to the secondary circuit module 22 in the box 9, in which the capacitors C2 and C3 are connected in series with the transformer T2, and the power frequency power transformer T1 is connected in parallel to C2 and C3, and the power is taken from C2 and C3 and output to the secondary side of the T1 transformer. The secondary side of T1 is converted into a DC power supply through the rectifier bridge D1 and the filter capacitor C4, and the VCC+ and VCC- power supply signals are output; the protection circuit is connected in parallel to C3; the traveling wave acquisition circuit is connected to the secondary side output winding of T2. The output end of the secondary circuit in the secondary circuit module 22 is connected to the aviation plug terminal 23, which is located on the box 9.

[0025] In the A-phase solid-sealed pole 3 and the B-phase solid-sealed pole 2, the incoming line is connected to the integrated capacitor 7 through the high-voltage fuse 6, and the outgoing line is connected to the high-voltage voltage sampling capacitor 8 on the outgoing side through the high-voltage fuse 6; in the C-phase solid-sealed pole 1, the incoming line is connected to the high-voltage voltage sampling capacitor 8 on the incoming side through the high-voltage fuse 6, and the outgoing line is connected to the integrated capacitor 7 through the high-voltage fuse 6.

[0026] Embodiment 2: A pole-mounted circuit breaker integrating power supply and traveling wave ranging, such as Figure 1-2 As shown, it includes: three poles and a box 9 for controlling the opening and closing of the poles. The three poles have consistent appearance design on the whole machine, and the internal design is different according to the function. The following design scheme is analyzed at different levels.

[0027] The three poles are the C-phase solid-sealed pole 1, the B-phase solid-sealed pole 2 and the A-phase solid-sealed pole 3. The A-phase solid-sealed pole 3 and the B-phase solid-sealed pole 2 are equipped with built-in sensors and capacitors. The incoming line side is equipped with an integrated capacitor 7 and a high-voltage voltage sampling capacitor 8 that can draw power at high voltage, and the outgoing line side is equipped with a high-voltage voltage sampling capacitor 8, a combined sensor 5, and an incoming and outgoing vacuum arc chamber 4; the C-phase solid-sealed pole 1 has built-in sensors and capacitors. The incoming line side is equipped with a high-voltage voltage sampling capacitor 8, and the outgoing line side is equipped with an integrated capacitor 7 and a high-voltage voltage sampling capacitor 8 that can draw power at high voltage, and a combined sensor 5, and an incoming and outgoing vacuum arc chamber 4; through the different configurations of the three poles, power drawing, voltage traveling wave signal collection, voltage / current signal sampling, and separate opening and closing of the three phases A, B, and C can be realized.

[0028] The internal structure of the sealed pole, the vacuum arc extinguishing chamber 4 is connected in series between the incoming line and the outgoing line, and the bottom of the vacuum arc extinguishing chamber 4 is interconnected with the operating mechanism in the box 9 through an insulating pull rod. When the operating mechanism in the box 9 receives the control of the operating handle or the distribution terminal, the opening and closing operations are realized; the combined sensor 5 is a current transformer and a current traveling wave sensor, which is hung on the outgoing line guide rod, and the current industrial frequency signal and the current traveling wave signal are collected by coupling. The whole machine realizes the sampling of three-phase industrial frequency current and three-phase traveling wave current, and the power condition and fault condition of the 10kV line are used as input; the integrated capacitor 7 is a high-voltage power supply and voltage traveling wave collection integrated capacitor, which is installed on the incoming line side in the A-phase sealed pole 3 and the B-phase sealed pole 2, and installed on the outgoing line side in the C-phase sealed pole 1. The capacitor type can be Choose ceramic capacitors or film capacitors; high-voltage voltage sampling capacitors 8 are deployed on the incoming side and the outgoing side of each pole. The whole machine can realize three-phase, double-side voltage sampling, and the power status and fault status of the 10kV line are used as input; the high-voltage fuse 6 plays a protective role. When the integrated capacitor 7 and the high-voltage voltage sampling capacitor 8 fail due to short circuit, a large current appears on the 10kV line to the ground, and the high-voltage fuse 6 immediately blows, and the 10kV line is disconnected from the ground to achieve line protection; the box body 9 has a built-in spring operating mechanism 18 and the vacuum arc chamber 4 in the sealed pole to realize the opening and closing operations; the secondary side sampling circuit 10 is an electronic voltage / current secondary side sampling circuit module and a capacitor energy acquisition secondary side circuit module, which are combined with the sensor in the sealed pole to realize energy acquisition and traveling wave sampling.

[0029] Combination Figure 3The connection of the internal components of the sealed pole is further explained. The incoming terminal 11 and the 10kV line are electrically connected to the sealed pole through this terminal; the incoming terminal 11 and the high-voltage fuse 6 are connected by a conductive connecting rod, and the high-voltage current on the incoming side of the 10kV line passes through the high-voltage fuse 6 to reach the integrated capacitor 7 and the high-voltage voltage sampling capacitor 8; the outgoing high-voltage fuse 6 and the outgoing terminal are also connected by a conductive connecting rod, and the high-voltage current on the outgoing side of the 10kV line flows out through the high-voltage fuse 6; when the high-voltage fuse 6 and the high-voltage capacitor are connected, the connection between the two components is also realized through a conductive connecting rod, realizing the connection between the high-voltage side of the line and the internal high-voltage capacitor; the capacitor shielding cover 13 realizes the uniform distribution of high voltage on the surface of the capacitor, effectively solving the problem of internal complex electric field unevenness, resulting in unqualified withstand voltage and partial discharge.

[0030] Combination Figure 4 Further explanation of the connection of the internal components of the box body 9, the spring operating mechanism 18 is connected to the vacuum arc chamber 4 through an insulating pull rod, and when receiving a command from the operating pull rod or the distribution terminal, the corresponding action can be achieved: opening and closing. The opening and closing handle 17 is an important component used to manually control the closing and opening of the switch. The closing and opening of the switch are achieved by rotating or pushing and pulling the handle. When closing is required, the operator rotates the opening and closing handle to the "closing" position. At this time, the handle drives the closing mechanism inside the switch through a mechanical transmission device to operate, so that the circuit is closed; similarly, when opening is required, the operator rotates the handle to the "opening" position to drive the opening mechanism inside the switch to operate, so that the switch is disconnected. The opening and closing indicator 21 conveys the current state of the switchgear to the operation and maintenance personnel through visual signals. It is a key link in the operation and maintenance of the power system. The closing and opening state of the switch is converted into the open or closed position of the indicator through a mechanical transmission mechanism. As an important accessory in the pole-mounted circuit breaker, the energy storage handle 20 has the main function of storing mechanical energy in the mechanical energy storage system. When the circuit breaker needs to be disconnected, the stored mechanical energy can be released, making the operation more convenient. The energy storage handle 20 plays the role of "energy reserve" in the disconnection process of the circuit breaker. At the same time, it also has the function of preventing false operation and mechanical locking of the main components of the circuit breaker to ensure the safe operation of the power system. Energy storage mark 19, the energy storage status mark inside the circuit breaker body, when the energy storage is completed, it corresponds to energy storage; if the energy storage is not completed, it corresponds to no energy storage.

[0031] The secondary circuit module 22 includes a capacitor power supply secondary circuit module and a voltage and current traveling wave acquisition secondary circuit module. The primary side sensor is used as the input end of the secondary circuit, and the output end of the secondary circuit is connected to the aviation plug terminal 23. The aviation plug terminal 23 is used to connect the circuit breaker body and the power distribution terminal. The interior of the aviation plug terminal contains multiple pins, each of which corresponds to a specific electrical function, such as: electronic phase sequence voltage, electronic zero sequence voltage, electronic phase sequence current, electronic zero sequence current signal, common terminal and other telemetry signals, open position, closed position, no energy storage, common terminal and other telesignal signals, open, closed, energy storage, common terminal and other remote control signals, power supply signals such as power supply signals for the incoming line side and the outgoing line side, voltage traveling wave sampling signals, current traveling wave sampling signals and other traveling wave sampling signals; the size and number of pins of the aviation plug terminal 23 are not specifically defined, and can be adjusted according to the actual situation of the incoming line.

[0032] In the above-mentioned component system, each component works together to realize the functions of power supply and traveling wave collection. Figure 5 Describes how it works.

[0033] The integrated capacitor 7 in the sealed pole is represented by C1 in the circuit diagram. Function: C1 not only stores energy as a capacitor, but also integrates multiple functions, including providing power supply and acting as a traveling wave acquisition sensor, which means that it is not only part of the power supply, but also participates in the process of traveling wave signal detection.

[0034] Capacitors C2 and C3 are low-voltage capacitors for capacitor power supply. Function: These two capacitors work together with the power frequency power transformer T1 to extract energy from the power line. They work with the T1 transformer to convert high voltage into a voltage level suitable for subsequent circuits. Power supply mechanism: Through the capacitor voltage division effect of C2 and C3, high voltage electricity is converted into a lower voltage, and then supplied to the T1 transformer for further conversion.

[0035] Power frequency power transformer T1, 50Hz, function: convert the low voltage AC power provided by C2 and C3, usually several hundred volts to several thousand volts, into a low voltage suitable for rectification and subsequent circuit use, such as 12V, 24V, etc. Function: Provide a stable AC power supply for the entire system, and then convert it into DC power supply through rectification and filtering.

[0036] Rectifier bridge D1, filter capacitor C4, function: convert the AC power output by T1 transformer into DC power, and filter it through C4 capacitor to eliminate voltage fluctuations and noise, and provide a more stable DC power supply. Output: finally output VCC+, VCC- power supply signals for use by the power distribution terminal system.

[0037] Protection circuit, function: monitor the voltage on the C3 capacitor. Once an abnormally high voltage is detected, such as the overvoltage generated by a 10kV line fault, the power supply circuit of T1, D1, and C4 will be immediately cut off to prevent the high voltage from damaging the subsequent circuit. Function: protect the entire power supply and signal processing system from high voltage shocks and improve the reliability and safety of the system.

[0038] High-frequency transformer T2, 100kHz-1MHz, function: connected in series with C1, C2, and C3, used for the transmission of high-frequency traveling wave signals. These high-frequency signals are coupled and transformed through transformer T2, and finally output to the traveling wave acquisition circuit. Traveling wave acquisition: The signal output through the T2-2 winding can be used by the traveling wave acquisition circuit to analyze the fault type and location of the power line.

[0039] Each of the three sealed poles of the pole-mounted circuit breaker contains a similar internal circuit structure, such as the integrated capacitor C1, low-voltage capacitors C2 and C3, power transformer T1, rectifier bridge D1, filter capacitor C4, and protection circuit described above. These sealed poles are interconnected through the secondary circuit wiring diagram, and the various signals collected, such as voltage, current, voltage traveling wave, and current traveling wave, are output to the aviation plug terminal 23, and finally connected to the distribution terminal controller.

[0040] After the installation is completed, as the power grid is running, the operating status of each functional module of the single-phase sequence is as follows: Figure 6 shown.

[0041] Phase sequence voltage and current sampling: In the first four normal power frequency cycles, the phase sequence voltage and current sampling module accurately collects the electronic voltage and current small signals consistent with the high-voltage side, and the phase is consistent with the high-voltage side. This ensures the accuracy and real-time nature of the data and provides reliable monitoring data for the distribution terminal controller.

[0042] Power-taking function: During the normal power frequency cycle, the power-taking module stably outputs a DC voltage power signal to provide the necessary power for the internal circuit of the device. When the power grid enters a fault cycle, the power frequency voltage rises and triggers the protection circuit, the power-taking circuit is protected in time and stops working, avoiding damage to the equipment caused by excessive voltage. This self-protection mechanism improves the reliability and safety of the equipment.

[0043] Traveling wave signal acquisition: Under normal conditions, the traveling wave acquisition module is in a silent state and does not output any signal. However, once a fault occurs in the power grid and a traveling wave signal is generated, the traveling wave acquisition circuit will respond quickly and output the signal. These signals are transmitted to the traveling wave ranging device through the aerial plug for analysis, thereby achieving accurate positioning of the fault location. This is of great significance for quickly restoring power supply and reducing power outage time.

[0044] Real-time monitoring and fault diagnosis can be achieved: Through electronic voltage and current sampling and traveling wave signal acquisition, the integrated deep fusion pole-mounted circuit breaker can monitor the operation status of the power grid in real time, and quickly diagnose and locate the fault when a fault occurs. This greatly improves the intelligence level and operation and maintenance efficiency of the power grid. Reduce manual intervention: Since the equipment has highly automated and intelligent characteristics, the frequency of manual inspections and interventions can be reduced in most cases. This not only reduces the operation and maintenance costs, but also improves the work efficiency of the operation and maintenance personnel. Improve power supply reliability: Through fast and accurate fault location and power supply restoration measures, the integrated deep fusion pole-mounted circuit breaker can significantly improve power supply reliability. When a power grid fault occurs, the fault area can be quickly isolated and the power supply to the non-fault area can be restored. Simplify the operation and maintenance process: The integrated design of the equipment simplifies the installation and maintenance process. The operation and maintenance personnel do not need to deal with the interface and connection problems between multiple independent devices, thereby reducing the difficulty and complexity of operation and maintenance. In summary, the pole-mounted circuit breaker has played an important role in improving the intelligence level, operation and maintenance efficiency and power supply reliability of the distribution network through its highly integrated functional modules and intelligent working principles.

[0045] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A pole-mounted circuit breaker integrating power supply and traveling wave ranging, comprising: The box body has three poles and controls the opening and closing of the poles, characterized in that the three poles are C-phase solid-sealed pole, B-phase solid-sealed pole and A-phase solid-sealed pole, each pole has a built-in vacuum arc chamber, the vacuum arc chamber is connected in series between the incoming line and the outgoing line, and the bottom of the vacuum arc chamber is interconnected with the operating mechanism in the box body through an insulating pull rod; the combined sensor sleeve is hung on the outgoing line guide rod, and the collection of the current industrial frequency signal and the current traveling wave signal is realized by coupling; the incoming line and the outgoing line of each pole are connected to the high-voltage fuse through a conductive connecting rod, and the high-voltage fuse is connected to the integrated Capacitor or high-voltage voltage sampling capacitor, the high-voltage voltage sampling capacitor is arranged on the incoming line side and the outgoing line side on each pole; the integrated capacitor is installed on the incoming line side in the A-phase solid-sealed pole and the B-phase solid-sealed pole, and is installed on the outgoing line side in the C-phase solid-sealed pole; the connection between the integrated capacitor and the secondary circuit module in the box, in which capacitors C2 and C3 are connected in series with transformer T2, the industrial frequency power transformer T1 is connected in parallel to C2 and C3, and the secondary side of T1 is connected to the power-taking circuit; the protection circuit is connected in parallel to C3; the traveling wave acquisition circuit is connected to the secondary side output winding of T2.

2. The pole-mounted circuit breaker integrating power supply and traveling wave ranging according to claim 1, characterized in that: In the A-phase solid-sealed pole and the B-phase solid-sealed pole, the incoming line is connected to the integrated capacitor through a high-voltage fuse, and the outgoing line is connected to the high-voltage voltage sampling capacitor on the outgoing side through a high-voltage fuse; in the C-phase solid-sealed pole, the incoming line is connected to the high-voltage voltage sampling capacitor on the incoming side through a high-voltage fuse, and the outgoing line is connected to the integrated capacitor through a high-voltage fuse.

3. The pole-mounted circuit breaker integrating power supply and traveling wave ranging according to claim 2 is characterized in that: The integrated capacitor is a capacitor that combines high voltage power supply and voltage traveling wave collection. The capacitor type can be ceramic capacitor or film capacitor.

4. The pole-mounted circuit breaker integrating power supply and traveling wave ranging according to claim 2, characterized in that: The combined sensor is a combination of a current transformer and a current traveling wave sensor.

5. The pole-mounted circuit breaker integrating power supply and traveling wave ranging according to claim 2, characterized in that: A capacitor shielding cover is arranged inside the integrated capacitor and the high voltage voltage sampling capacitor.

6. The pole-mounted circuit breaker integrating power supply and traveling wave ranging according to any one of claims 1 to 5, characterized in that: The box body has a built-in spring operating mechanism, which is connected to the vacuum interrupter through an insulating pull rod.

7. The pole-mounted circuit breaker integrating power supply and traveling wave ranging according to claim 6, characterized in that: The output end of the secondary circuit in the secondary circuit module is connected to an aviation plug terminal, which is located on the box.

8. The pole-mounted circuit breaker integrating power supply and traveling wave ranging according to claim 7, characterized in that: The box body is provided with opening and closing handles, which are connected to the spring operating mechanism, and the closing and opening of the switch are achieved by rotation or push-pull.

9. The pole-mounted circuit breaker integrating power supply and traveling wave ranging according to claim 8, characterized in that: An energy storage handle is provided on the box body, and the energy storage handle is used to store mechanical energy in the mechanical energy storage system.

10. The pole-mounted circuit breaker integrating power supply and traveling wave ranging according to claim 9, characterized in that: The box body is also provided with energy storage mark and opening and closing indicator mark.

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