A primary-secondary integrated encapsulated pole and power-taking device used on outdoor pole-mounted equipment

Abstract

The present invention discloses a primary-secondary integrated solid-sealed pole and its power-taking device for outdoor use on poles, which includes an upper guide rod, a vacuum interrupter, a moving terminal, a double-headed screw, a spring contact grease, a lower guide rod, a zero-phase integrated voltage sensor, a zero-phase integrated current sensor, a low-voltage side phase sequence low-voltage capacitor, a zero-sequence common low-voltage capacitor, a phase sequence voltage sensor, a load-side phase sequence low-voltage capacitor, and a power-taking device. The present invention adopts the technology of zero-phase integrated current and voltage sensors with multiple functions, small volume, and low capacity, solves the problem of high integration difficulty in the market, effectively ensures the primary-secondary integrated product with small volume, high precision, and complete functions. At the same time, a multi-loop co-measurement parallel wiring method is adopted to reduce the influence of high voltage, partial discharge, lightning strike, etc. during the forming process.

Description

Technical Field

[0001] The present invention relates to the field of new outdoor pole-mounted switches, and particularly to a primary-secondary integrated solid-sealed pole for a primary-secondary integrated outdoor vacuum circuit breaker. Background Art

[0002] In the existing technology of our country, pole-mounted vacuum circuit breakers are mainly of the "coaxial box type" and "post type". The post type mainly uses solid-sealed poles in combination with externally mounted sensors. Due to various reasons such as the volume of the sensors and the casting process, for example, if the part volume is too large, the product cannot meet the usage requirements after being formed, such as being unable to achieve zero-phase integrated current sensor integration and zero-phase integrated voltage sensor integration, or if the part volume is small, it cannot meet the accuracy of the sensor.

[0003] Currently, in the market, due to the large volume of voltage and current sensors, the difficulty of the bonding process with epoxy resin is high, and the volume is large. After integration, due to many circuit traces, the product cannot be formed in terms of characteristics such as withstand voltage, partial discharge, and lightning impulse. Therefore, a simple post-assembly mode is mostly adopted to reduce the integration difficulty and achieve primary-secondary integration locally. However, due to the technical characteristics of the capacitor itself, a large capacitor with a large capacitance value needs to be configured to solve the accuracy problem of primary-secondary integration, resulting in the inability to integrate the product.

[0004] During the production process of the existing technology, due to the particularity of the epoxy resin casting process, there are high temperatures, casting pressures, shrinkage internal stresses, and uneven shrinkage coefficients during casting. There are problems such as poor part bonding during casting, and the product cannot meet the requirements of tens of thousands of mechanical impacts and the usage environment of -40°C to 70°C.

[0005] For the commissioning of switchgear in existing substations, it is necessary to provide power for the secondary part of the circuit breaker to meet the operation of the secondary part. However, the power supply must be replaced, inspected, and maintained in the short term due to time factors, increasing the difficulty of high-voltage power transformation and overcoming the technical problems in this field.

[0006] In the secondary power supply process of existing switches, power supply is achieved by adding power supply equipment outside the switch or adding a separate voltage transformer. This will cause the switch to be inspected or overhauled to replace the new power supply within a certain period, or a huge voltage transformer is used to meet the power-taking characteristics, resulting in changes in characteristic parameters and major potential hazards, which urgently need to be improved.

[0007] The prior art patent such as CN 110473739 A discloses: a new type of integrated primary and secondary vacuum circuit breaker pole column, including a vacuum interrupter, an epoxy resin casting body, a flexible connection, an insulating pull rod assembly, a lower outgoing line, a current sensor, a capacitive voltage sensor, and a capacitive energy-taking device; wherein the inside of the epoxy resin casting body is a hollow cavity; the vacuum interrupter is arranged at the top of the overall structure of the epoxy resin casting body; the lower outgoing line is arranged in the side column structure of the epoxy resin casting body, and an annular current sensor is arranged outside the lower outgoing line, and the current sensor includes a phase current sensor and a zero-sequence current sensor; the capacitive voltage sensor and the capacitive energy-taking device are respectively arranged at the left lower end of the internal hollow cavity of the epoxy resin casting body, and the bottom of the vacuum interrupter is connected to the lower outgoing line through a flexible connection; the insulating pull rod assembly is arranged at the bottom of the vacuum interrupter, and its top end passes through the flexible connection and extends into the inside of the vacuum interrupter; both the capacitive voltage sensor and the capacitive energy-taking device adopt a post-installed design and are fixed inside the pole column by screws arranged at the end. This design has a single turns ratio and cannot meet the requirements of various different turns ratios. At the same time, due to the influence of factors such as temperature, pressure, environment, and impact force of the casting process during the re-casting of the product, after casting, the current sensor often has problems such as insufficient accuracy and poor high voltage performance. Summary of the Invention

[0008] The object of the present invention is to provide an integrated primary and secondary cast-in-place pole column for outdoor use on a pole, aiming to solve the problems of large integration difficulty, large volume, low accuracy, high voltage, partial discharge, lightning impulse, etc. in the prior art.

[0009] To solve the above problems, the technical solution of the present invention is: mainly including an upper guide rod, a vacuum interrupter, a moving terminal, a double-headed screw, a spring contact grease, a lower guide rod, a zero-sequence voltage sensor, a phase-sequence voltage sensor, a high-voltage conductor, a zero-phase integrated voltage sensor, a zero-phase integrated current sensor, a low-voltage side phase-sequence low-voltage capacitor, a zero-sequence common low-voltage capacitor, and a low-voltage capacitor. The upper guide rod is connected to the static end of the vacuum interrupter, the vacuum interrupter is connected to the moving terminal, the moving terminal is tightly combined by the fastening force of the double-headed screw, and the spring contact grease connects the moving terminal and the lower guide rod to form a primary main circuit structure; the upper guide rod is connected to the zero-phase integrated voltage sensor, the wiring passes through the zero-phase integrated current sensor, and is connected to the low-voltage side phase-sequence low-voltage capacitor and the zero-sequence common low-voltage capacitor to form a high-voltage end zero-phase circuit; the lower guide rod is connected to the load side phase-sequence voltage sensor and correspondingly cooperates with the load side phase-sequence low-voltage capacitor to form a load side phase-sequence voltage sensor circuit; after the lower guide rod conducts current, the zero-phase integrated current sensor senses the current to form a zero-phase integrated current sensor circuit; the circuits are integrally cast into the epoxy body to form an integrated primary and secondary cast-in-place pole column.

[0010] The zero-phase integrated current sensor is a phase-sequence current sensor with multiple transformation ratios and also functions as a zero-sequence current sensor, making the product more compatible and capable of meeting multi-functional transformation ratios such as 200:1, 400:1, 600:1, etc.

[0011] The zero-phase integrated current sensor adopts the method of pre-casting after soft packaging and then undergoes secondary casting, greatly improving the product yield rate, mechanical life, and electrical life.

[0012] For the zero-phase integrated voltage sensor, the phase-sequence capacitance is ≤150PF with an accuracy of 0.5 level, and the zero-sequence capacitance is ≤250PF with an accuracy of 1P level; the phase-sequence voltage division ratio The zero-sequence voltage division ratio The integrated structure meets the casting requirements and also meets the power frequency, partial discharge, and lightning impulse indexes, serving as a secondary circuit unit.

[0013] After the lead wire of the zero-phase integrated voltage sensor passes through the body of the zero-phase integrated current sensor, it is led out together with the lead wire of the zero-phase integrated current sensor through the epoxy resin sealed pole column body.

[0014] The load side is connected to the phase-sequence voltage sensor for load side voltage measurement. The phase-sequence capacitance is ≤150PF with an accuracy of 0.5 level, and the zero-phase voltage division ratio This invention makes the pole column electric field absolutely symmetric, having better electrical and mechanical properties, and serving as a secondary circuit unit.

[0015] Both the incoming and outgoing line terminals are equipped with phase-sequence voltage sensors. During the operation of the product, it can meet the requirements of incoming and outgoing line selection in the market, and the product can enter the voltage measurement state, meeting the design concept of intelligent primary-secondary integration and serving as a secondary circuit unit.

[0016] The vacuum interrupter is connected to the pole-mounted switch through the moving terminal, double-headed screw, and insulating pull rod, and the circuit breaker is used for opening and closing control, serving as the primary main circuit and meeting the switch usage requirements.

[0017] The zero-phase integrated voltage sensor, zero-phase integrated current sensor, and phase-sequence voltage sensor are cast into one body with the vacuum interrupter of the primary circuit, realizing the integration of the primary and secondary circuits.

[0018] The zero-sequence voltage sensor and the phase-sequence voltage sensor are formed into one body through epoxy resin casting, undergo soft packaging on the outside, and then are solid-sealed and formed.

[0019] The high-voltage conductor is connected through a copper connecting nut.

[0020] The high-voltage conductor conducts voltage and current to the high-voltage ends of the zero-sequence voltage sensor and the phase-sequence voltage sensor. The zero-sequence voltage sensor is connected to the lead-end voltage signal lead of the current sensor through a low-voltage lead wire. This invention solves the problems that the voltage sensor requires a large insulation distance due to insulation issues, and at the same time, the sensor increases its outer diameter to maintain a sufficient capacitance value due to the large insulation distance. It realizes the miniaturization of the product while greatly improving the qualified rate of product forming. The finished product rate has increased from about 40% to more than 95%, greatly reducing the processing cost.

[0021] The lead wire of the zero-phase integrated voltage sensor passes through the current sensor to lead out the low-voltage signal lead from the epoxy resin encapsulated pole body. The voltage signal wire passes through the zero-phase integrated current sensor and merges into the zero-sequence lead wire and the zero-sequence outgoing lead wire and is led out at the same time. This design breaks the way of separating the product lead wires, making the product's power plant more optimized, the volume smaller, the lead wires more reasonable, and the product forming process more concise. The lead wires use mutual shielding between wires, so there is no interference between each other. This invention is also a major highlight of this design.

[0022] Furthermore, the present invention also discloses a power-taking device using a primary-secondary integrated encapsulated pole on an outdoor pole, which is composed of a guide rod, a lock cover, a compression spring, a voltage sensor, a collection box, an insulating pull rod, a high-voltage end, and a connecting nut. The voltage sensor is connected to a metal connecting body, and the connecting nut is connected to a circuit breaker.

[0023] A connecting wire is inserted into the upper end of the voltage sensor, and the connecting wire is connected to the collection box.

[0024] The voltage sensor transmits the power-taking power to the power-taking low-voltage capacitor through the high-voltage end.

[0025] The voltage sensor is arranged between the lower end of the connector and the connecting nut. The voltage sensor is not connected to the nut, and the voltage sensor is led out to the collection box.

[0026] The high voltage of the voltage sensor is transmitted downward from above the compression spring.

[0027] The voltage signal information of the high-voltage end is transferred to the collection box to collect the converted power-taking data received by the voltage sensor. While online converting the important parameters of the circuit breaker pressure and the operation of the mechanism, it provides the function of taking power for the normal operation of the switch cabinet. Through the insulating pull rod, online power supply and the normal operation of the circuit breaker are realized.

[0028] The present invention adopts the technology of zero-phase integrated current and voltage sensors, which are multifunctional, small in size and low in capacity, solves the high integration difficulty in the market, and effectively ensures the primary-secondary integrated products with small size, high precision and complete functions. At the same time, a multi-loop method of simultaneous measurement and parallel wiring is adopted to reduce the influence of high voltage, partial discharge, lightning strike, etc. during the forming process.

[0029] The present invention solves the primary-secondary integration technology of outdoor pole-mounted switches, realizes the functions of zero-phase voltage and current measurement and protection, completely surpasses the accuracy problems at home and abroad, and at the same time realizes the power supply problem of the product itself, realizes the integration casting of the secondary part into one body, and meets the indicators of the domestic and foreign markets.

[0030] On the one hand, the present invention solves the technical difficulty of casting brought by multi-party lead wires, on the other hand, it brings advantages to the overall electric field and mechanical properties of the product, and at the same time, it is the technical core of the miniaturization of the product volume, as a secondary circuit unit;

[0031] The present invention can convert high-voltage signals into important power supply parameters required by other parts at any time, and does not increase or change the space of the original switch, solving the risk of substation operation failures caused by current switch cabinets. It fills the gap in power supply for the switch field at home and abroad. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0033] Figure 1 is a sectional view of a primary-secondary integrated solid-sealed pole used on an outdoor pole for the present invention;

[0034] Figure 2 is a schematic structural diagram of a zero-phase integrated voltage sensor of the present invention;

[0035] Figure 3 is a schematic structural diagram of a zero-phase integrated multi-ratio current sensor of the present invention;

[0036] Figure 4 is a schematic structural diagram of a power supply taking device of a primary-secondary integrated solid-sealed pole used on an outdoor pole for the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0037] In order to enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0038] Such as Figure 1 、 2, as shown in FIGS. 3, the invention provides a primary-secondary integrated encapsulated pole column for outdoor pole-mounted use, which consists of an upper guide rod 1, a vacuum interrupter 2, a moving terminal 3, a double-headed screw 5, a spring contact grease 4, a lower guide rod 6, a zero-phase integrated voltage sensor 7, a zero-phase integrated current sensor 8, a low-voltage side phase sequence low-voltage capacitor 9, a zero-sequence common low-voltage capacitor 10, a phase sequence voltage sensor 11, a load-side phase sequence voltage capacitor 12, an epoxy resin encapsulated pole column body 18, an insulating pull rod 13, a power-taking low-voltage capacitor 15, 5 nut inserts 14, phase sequence transformation ratios 9.1; phase sequence transformation ratios 9.2; phase sequence transformation ratios 9.3; common line 9.4; zero-sequence lead 10.1; zero-sequence outlet 10.2; voltage signal line 10.3; voltage signal line 10.4, etc.

[0039] Specifically, the upper guide rod 1 is connected to the static end of the vacuum interrupter 2, the vacuum interrupter 2 is connected to the moving terminal 3, and the moving terminal 3 is kept tightly combined through the fastening force of the double-headed screw 5. The spring contact grease 4 connects the moving terminal 3 and the lower guide rod 6 to form a primary main circuit structure; the upper guide rod 1 is connected to the zero-phase integrated voltage sensor 7, the wiring passes through the zero-phase integrated current sensor 8, and is connected to the low-voltage side phase sequence low-voltage capacitor 9 and the zero-sequence common low-voltage capacitor 10 to form a high-voltage side zero-phase circuit; the lower guide rod 6 is connected to the phase sequence voltage sensor 11 and correspondingly cooperates with the load-side phase sequence low-voltage capacitor 12 to form a load-side phase sequence voltage sensor circuit; after the lower guide rod 6 passes current, the zero-phase integrated current sensor 8 senses the current to form a zero-phase integrated current sensor circuit; the above circuits are integrally cast into the epoxy resin encapsulated pole column body 18 to form a reliable primary-secondary integrated encapsulated pole column;

[0040] For the zero-phase integrated voltage sensor 7 mentioned above, the phase sequence adopts ≤150PF and the accuracy is 0.5 level, and the zero-sequence adopts ≤250PF and the accuracy is 1P level; the phase sequence voltage division ratio Zero-sequence voltage division ratio The integrated structure meets the casting requirements and at the same time meets the power frequency, partial discharge, and lightning impulse indexes, serving as a secondary circuit unit;

[0041] After the lead of the zero-phase integrated voltage sensor 7 passes through the body of the zero-phase integrated current sensor 8, it is led out of the encapsulated pole column body together with the lead of the zero-phase integrated current sensor.

[0042] The load side is connected to the phase sequence voltage sensor 11 for use in load-side voltage testing. The phase sequence adopts ≤150PF and the accuracy is 0.5 level, and the zero-phase sequence voltage division ratio The invention makes the electric field of the pole column symmetrical, having better electrical and mechanical properties, and serving as a secondary circuit unit;

[0043] The described phase sequence voltage sensor 11 is provided with an incoming line terminal 17 and an outgoing line terminal 16. During the operation of the product, it can meet the requirements of incoming and outgoing line selection in the market, and the product can enter the voltage test state, meeting the design concept of intelligent primary-secondary integration and serving as a secondary circuit unit.

[0044] The described zero-phase integrated current sensor 8 adopts a phase sequence current sensor with multiple transformation ratios and also functions as a zero-sequence current sensor, making the product more compatible.

[0045] The described vacuum interrupter 2 is connected to the pole-mounted switch through a moving terminal 3, a double-headed screw 5, and an insulating pull rod 13 and is controlled for opening and closing using a circuit breaker, serving as the primary main circuit and meeting the requirements of switch use.

[0046] The described zero-phase integrated voltage sensor 7, zero-phase integrated current sensor 8, and phase sequence voltage sensor 11 are cast integrally with the vacuum interrupter 2 of the primary circuit to achieve the integration of the primary and secondary.

[0047] As Figure 2 shown, after the zero-phase integrated voltage sensor 7 is cast, a soft-packing process copper connection nut 7.5 is carried out to connect to the incoming high-voltage conductor, leading the voltage and current to the high-voltage ends of the zero-sequence and phase sequence. The zero-sequence voltage sensor 7.6 is connected to the voltage signal leads 10.3 and 10.4 of the lead end of the current sensor through a low-voltage lead 7.7. The phase sequence voltage sensor 11 is led out from the low-voltage lead 7.4 and connected to the low-voltage lead 10.4. The zero-sequence and phase sequence are cast integrally through epoxy resin 7.2, and after soft-packing 7.1 and passing through the exterior, and then solid-sealed and formed. This invention solves the problem that the voltage sensor requires a large insulation distance due to insulation issues, and at the same time, due to the large insulation distance, the sensor increases its outer diameter in order to maintain a sufficient capacitance value. It realizes the miniaturization of the product while greatly improving the qualified rate of product forming. The finished product rate has increased from the original 10% to more than 90%, greatly reducing the processing cost.

[0048] As Figure 3 shown, the present invention adopts a forming method with multiple transformation ratios and can simultaneously meet multifunctional transformation ratios such as 200:1, 400:1, 600:1, etc., making the product more compatible.

[0049] At the same time, due to the influence of factors such as temperature, pressure, environment, and impact force of the casting process during the product casting, after the current sensor is cast, problems such as insufficient accuracy and poor high voltage often occur. Therefore, the current sensor 8.1 adopts a method of soft-packing 8.2 and pre-casting 8.3 for forming, and then secondary casting is carried out, greatly improving the product finished product rate, product mechanical life, and electrical life.

[0050] The lead wires of the zero-phase integrated voltage sensor 7 of the present invention pass through the body of the zero-phase integrated current sensor 8 to lead out the low-voltage signal lead wires from the product body. The voltage signal wires 10.3 and 10.4 pass through the zero-phase integrated current sensor 8 and are merged with the zero-sequence lead wire 10.1 and the zero-sequence outgoing wire 10.2 to be led out simultaneously. This design breaks the way of separating the product lead wires, making the power plant of the product more optimized, the volume smaller, the lead wires more reasonable, and the product forming process more concise. The lead wires adopt mutual shielding between wires, so that there is no interference between each other. This invention is also a major highlight of this design.

[0051] As Figure 4 shown, further, the present invention also discloses a power-taking device using a primary-secondary integrated solid-sealed pole column for outdoor pole-mounted use, which is composed of a guide rod 161, a lock cover 171, a compression spring 181, a voltage sensor 20, a collection box 24, a high-voltage terminal 23, and a connecting nut 22. The voltage sensor 20 is connected to a metal connecting body, and the connecting nut 22 is connected to a circuit breaker.

[0052] A connecting wire is inserted at the upper end of the voltage sensor 20, and the connecting wire is connected to the collection box 24.

[0053] The voltage sensor transmits the power-taking power to the power-taking low-voltage capacitor through the high-voltage terminal.

[0054] The voltage sensor is arranged between the lower end of the connector and the connecting nut. The voltage sensor is not connected to the nut, and the voltage sensor is led out to the collection box.

[0055] The high voltage of the voltage sensor is transmitted from above the compression spring downward.

[0056] The voltage signal information of the high-voltage terminal 23 is transferred to the collection box 24 to collect the converted power-taking data received by the voltage sensor 20. While online converting the important parameters of the circuit breaker pressure and the operation of the mechanism, it provides the function of taking power for the normal operation of the switch cabinet, and through the insulating pull rod wisdom, realizes online power supply and the normal operation of the circuit breaker.

[0057] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application 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 should not be construed as a limitation to the present application.

[0058] The above has introduced in detail a primary-secondary integrated encapsulated pole and power-taking device for outdoor use on a pole provided by the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. Without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. An outdoor pole-mounted integrated primary and secondary sealed pole column mainly includes an upper guide rod, a vacuum interrupter, a moving terminal, a double-headed screw, a spring contact grease, a lower guide rod, a zero-sequence voltage sensor, a phase-sequence voltage sensor, a high-voltage conductor, a zero-phase integrated voltage sensor, a zero-phase integrated current sensor, a low-voltage side phase-sequence low-voltage capacitor, a zero-sequence common low-voltage capacitor, a load-side phase-sequence low-voltage capacitor, and a power-taking low-voltage capacitor. It is characterized in that: The upper guide rod is connected to the static end of the vacuum interrupter, the vacuum interrupter is connected to the moving terminal, the moving terminal is tightly combined by the fastening force of the double-headed screw, and the spring contact grease connects the moving terminal and the lower guide rod to form a primary main circuit structure. The upper guide rod is connected to the zero-phase integrated voltage sensor, the wiring passes through the zero-phase integrated current sensor, and is connected to the low-voltage side phase-sequence low-voltage capacitor and the zero-sequence common low-voltage capacitor to form a high-voltage end zero-phase circuit; the lower guide rod is connected to the phase-sequence voltage sensor and correspondingly cooperates with the load-side phase-sequence low-voltage capacitor to form a load-side phase-sequence voltage sensor circuit; after the lower guide rod conducts current, the zero-phase integrated current sensor senses the current and serves as a zero-phase integrated current sensor circuit; the primary main circuit structure, the high-voltage end zero-phase circuit, the load-side phase-sequence voltage sensor circuit, and the zero-phase integrated current sensor circuit are integrally cast into the epoxy resin sealed pole column body to form an integrated primary and secondary sealed pole column; the zero-phase integrated current sensor is a multi-ratio phase-sequence current sensor, and the phase-sequence voltage sensor is provided with an incoming line end and an outgoing line end and serves as a secondary circuit unit.

2. An outdoor pole-mounted integrated primary and secondary sealed pole column according to claim 1, It is characterized in that: The zero-phase integrated current sensor also serves as a zero-sequence current sensor at the same time.

3. An outdoor pole-mounted integrated primary and secondary sealed pole column according to claim 1, It is characterized in that: The zero-phase integrated current sensor is pre-cast in a soft package and then subjected to secondary casting.

4. An outdoor pole-mounted integrated primary and secondary sealed pole column according to claim 1, It is characterized in that: The zero-phase integrated voltage sensor has a phase sequence with ≤150 PF and an accuracy of class 0.5, and a zero-sequence with ≤250 PF and an accuracy of class 1P; the phase sequence voltage division ratio Zero-sequence voltage division ratio 5. An outdoor pole-mounted integrated primary and secondary sealed pole column according to claim 1, It is characterized in that: After the lead wire of the zero-phase integrated voltage sensor passes through the zero-phase integrated current sensor body, it is led out of the epoxy resin sealed pole column body together with the lead wire of the zero-phase integrated current sensor.

6. An outdoor pole-mounted integrated primary and secondary sealed pole column according to claim 1, It is characterized in that: The load-side access phase-sequence voltage sensor is used for load-side voltage measurement. The phase-sequence uses ≤150PF, with an accuracy of 0.5 level, and the zero-phase-sequence voltage division ratio as a secondary circuit unit.

7. An outdoor pole-mounted integrated primary and secondary sealed pole column according to claim 1, It is characterized in that: The vacuum interrupter is connected to the pole-mounted switch through the moving terminal, the double-headed screw and the insulating pull rod, and is controlled by a circuit breaker for opening and closing, serving as the primary main circuit.

8. An outdoor pole-mounted integrated primary and secondary sealed pole column according to claim 1, It is characterized in that: The zero-phase integrated voltage sensor, the zero-phase integrated current sensor, and the phase-sequence voltage sensor are cast into one body with the vacuum interrupter of the primary circuit to realize the integration of the primary and secondary.

9. An outdoor pole-mounted integrated primary and secondary sealed pole column according to claim 1, It is characterized in that: The described zero-sequence voltage sensor and phase-sequence voltage sensor are integrally formed by epoxy resin casting. After soft packaging, they pass through the exterior and then are solid-sealed and formed.

10. A primary-secondary integrated solid-sealed pole column used on an outdoor pole as described in claim 1, characterized in that: The high-voltage conductor is connected through a copper connection nut.

11. A primary-secondary integrated solid-sealed pole column used on an outdoor pole as described in claim 10, characterized in that: The high-voltage conductor leads voltage and current to the high-voltage ends of the zero-sequence voltage sensor and the phase-sequence voltage sensor. The zero-sequence voltage sensor is connected to the voltage signal lead of the lead end of the current sensor through a low-voltage lead of a wire.

12. A primary-secondary integrated solid-sealed pole column used on an outdoor pole as described in claim 1, characterized in that: The lead of the zero-phase integrated voltage sensor passes through the zero-phase integrated current sensor, leads out the low-voltage signal lead from the epoxy resin solid-sealed pole column body, and the voltage signal wire passes through the zero-phase integrated current sensor and merges with the zero-sequence lead and the zero-sequence outgoing lead and is led out simultaneously.

13. A power-taking device for a primary-secondary integrated solid-sealed pole column used on an outdoor pole as described in any one of claims 1-12, characterized in that: It is composed of a guide rod, a lock cover, a compression spring, a voltage sensor, a collection box, an insulating pull rod, a high-voltage end, and a connection nut. The voltage sensor is connected to a metal connection body, and the connection nut is connected to a circuit breaker.

14. A power-taking device for a primary-secondary integrated solid-sealed pole column used on an outdoor pole as described in claim 13, characterized in that: A connection wire is inserted at the upper end of the voltage sensor, and the connection wire is connected to the collection box.

15. A power-taking device for a primary-secondary integrated solid-sealed pole column used on an outdoor pole as described in claim 13, characterized in that: The voltage sensor transmits the power-taking power to the power-taking low-voltage capacitor through the high-voltage end.

16. A power-taking device for a primary-secondary integrated solid-sealed pole column used on an outdoor pole as described in claim 13, characterized in that: The voltage sensor is arranged between the lower end of the connector and the connection nut, and the voltage sensor leads out to the collection box.

17. A power-taking device for a primary-secondary integrated solid-sealed pole column used on an outdoor pole as described in claim 13, characterized in that: The high voltage of the voltage sensor is transmitted from above the compression spring downward.

18. A power-taking device for a primary-secondary integrated solid-sealed pole column used on an outdoor pole as described in claim 13, characterized in that: The voltage signal information of the high-voltage end is transferred to the collection box to collect the converted power-taking data received by the voltage sensor.

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