CN-121983458-A - Outdoor column vacuum circuit breaker

Abstract

The invention provides an outdoor pole-mounted vacuum circuit breaker, which belongs to the field of switches and comprises a shell, solid-sealed poles which are identical in three-phase structure and are all arranged on the shell, a first electrode taking pole arranged on the shell and a first power taking power supply arranged in the shell, wherein an integrated current sensor and a voltage dividing type voltage sensor are fixedly sealed in the solid-sealed poles, the voltage dividing type voltage sensor is connected with a movable end conducting rod or a static end conducting rod of a vacuum arc-extinguishing chamber of the solid-sealed poles, the integrated current sensor is connected with a movable end conducting rod of the vacuum arc-extinguishing chamber of the solid-sealed poles, the upper end of the first electrode taking pole is connected with a wire inlet end of one of the solid-sealed poles, the lower end of the first electrode taking pole is connected with the first power taking power supply, and the first power taking power supply is an isolated power taking power supply. The requirements of power supply stability, installation convenience, electricity safety, voltage sampling precision and the like can be met when electricity is taken.

Inventors

• RUI ZUCUN
• ZENG FANXIN
• LI SHU

Assignees

• 双杰电气合肥有限公司

Dates

Publication Date

20260505

Application Date

20260129

Claims (10)

1. 1. The vacuum circuit breaker on the outdoor pole is characterized by comprising a shell (1), a solid-sealed pole (2), an integrated current sensor (21), a voltage division type voltage sensor (22), a first electrode taking pole (3) and a first power taking power supply (13), wherein the solid-sealed pole (2) is internally and fixedly sealed with the integrated current sensor (21) and the voltage division type voltage sensor (22), the voltage division type voltage sensor (22) is connected with a movable end conducting rod or a static end conducting rod of a vacuum arc extinguishing chamber of the solid-sealed pole (2), the integrated current sensor (21) is connected with the movable end conducting rod of the vacuum arc extinguishing chamber of the solid-sealed pole (2), the first electrode taking pole (3) is arranged on the shell (1), the upper end of the first electrode taking pole (3) is connected with one of the ends of the solid-sealed pole (2), and the first electrode taking pole (13) is arranged in the first power supply (13) and is connected with the first power supply (13).
2. 2. The outdoor pole-mounted vacuum circuit breaker according to claim 1, further comprising an aviation plug (12) and a voltage collection printed circuit board (11), wherein the aviation plug (12) is mounted on the side wall of the shell (1), the voltage collection printed circuit board (11) is mounted in the shell (1), the integrated current sensor (21) and the voltage division voltage sensor (22) are connected with the voltage collection printed circuit board (11) through wires, and the first power taking power supply (13) is connected with the aviation plug (12) through wires.
3. 3. The outdoor pole-mounted vacuum circuit breaker according to claim 2, further comprising a second electrode-taking pole (4) and a second power-taking power supply (14), wherein the second electrode-taking pole (4) is installed on the shell (1), the upper end of the second electrode-taking pole (4) is connected with the outlet end of one of the solid-sealed pole (2), the second power-taking power supply (14) is installed in the shell (1), the lower end of the second electrode-taking pole (4) is connected with the second power-taking power supply (14), the second power-taking power supply (14) is connected with the aviation plug (12) through a wire, and the second power-taking power supply (14) is an isolated power-taking power supply.
4. 4. The outdoor pole-mounted vacuum circuit breaker according to claim 3, further comprising a first full-bridge rectifier bridge (131), a first secondary voltage division film capacitor (132), a second full-bridge rectifier bridge (141) and a second secondary voltage division film capacitor (142), wherein the first full-bridge rectifier bridge (131) and the first secondary voltage division film capacitor (132) are integrated in the first power supply (13), and the second full-bridge rectifier bridge (141) and the second secondary voltage division film capacitor (142) are integrated in the second power supply (14).
5. 5. An outdoor pole-mounted vacuum circuit breaker according to claim 3, wherein the first electrode-taking pole (3) comprises a first insulating shell (31) and a first voltage-dividing main capacitor, the second electrode-taking pole (4) comprises a second insulating shell (41) and a second voltage-dividing main capacitor, the first insulating shell (31) is mounted on the shell (1), the first voltage-dividing main capacitor is fixedly sealed in the first insulating shell (31), the upper end of the first voltage-dividing main capacitor is connected with the inlet wire end of one of the fixed-sealed pole poles (2), the lower end of the first voltage-dividing main capacitor is connected with the first power-taking supply (13), the second insulating shell (41) is mounted on the shell (1), the second voltage-dividing main capacitor is fixedly sealed in the second insulating shell (41), the upper end of the second voltage-dividing main capacitor is connected with the outlet wire end of one of the fixed-sealed pole (2), and the lower end of the second voltage-dividing main capacitor is connected with the second power-taking supply (14).
6. 6. The outdoor pole-mounted vacuum circuit breaker according to claim 5, wherein the first voltage-dividing main capacitor comprises a plurality of first capacitors (32) which are sequentially connected in series from head to tail, the second voltage-dividing main capacitor comprises a plurality of second capacitors (42) which are sequentially connected in series from head to tail, the first capacitors (32) at the head end are connected with the wire inlet ends of the corresponding solid-sealed pole (2), the first capacitors (32) at the tail end are connected with the first power supply (13), the second capacitors (42) at the head end are connected with the wire outlet ends of the corresponding solid-sealed pole (2), and the second capacitors (42) at the tail end are connected with the second power supply (14).
7. 7. The outdoor pole-mounted vacuum circuit breaker according to claim 3, further comprising a first electricity-taking copper bar (5) and a second electricity-taking copper bar (6), wherein the first electricity-taking pole (3) is connected with the corresponding wire inlet end of the solid-sealed pole (2) through the first electricity-taking copper bar (5), and the second electricity-taking pole (4) is connected with the corresponding wire outlet end of the solid-sealed pole (2) through the second electricity-taking copper bar (6).
8. 8. The outdoor pole-mounted vacuum circuit breaker according to claim 1, wherein three phases of the solid-sealed poles (2) are mounted on the housing (1) at equal intervals in a straight line, and the minimum distance between two adjacent solid-sealed poles (2) is 210mm.
9. 9. An outdoor pole-mounted vacuum circuit breaker according to claim 3, characterized in that the first pole (3), the three-phase solid-sealed pole (2) and the second pole (4) are mounted on the housing (1) at intervals in a straight line, and the three-phase solid-sealed pole (2) is located between the first pole (3) and the second pole (4).
10. 10. The outdoor pole-mounted vacuum circuit breaker according to claim 9, characterized in that the minimum distance between the first extraction pole (3) and the encapsulated pole (2) at the head end is 110mm, and the minimum distance between the second extraction pole (4) and the encapsulated pole (2) at the tail end is 110mm.

Description

Outdoor column vacuum circuit breaker Technical Field The invention relates to the technical field of switches, in particular to an outdoor column vacuum circuit breaker. Background The ZW32 outdoor column vacuum circuit breaker is core protection equipment of a medium-voltage distribution network, and the operation stability of the ZW32 outdoor column vacuum circuit breaker directly influences the power supply reliability of the distribution network. Key functional components such as an intelligent control unit of the circuit breaker need to continuously acquire stable electric energy so as to realize intelligent operations such as remote control, fault detection, automatic reclosing and the like, so that performance parameters of the power taking module are key for guaranteeing efficient and reliable operation of the vacuum circuit breaker on the ZW32 outdoor column. At present, the current industry mainly adopts an induction power taking mode of an electromagnetic voltage transformer and a direct power taking mode of a resistance-capacitance voltage division type electronic voltage sensor aiming at a ZW32 outdoor pole vacuum circuit breaker, but the two power taking modes are difficult to simultaneously meet the requirements of power supply stability, installation convenience, power consumption safety, voltage sampling precision and the like. The power taking mode of the electromagnetic voltage transformer is to obtain electric energy through induction of a transformer coil from a high-voltage bus, and the low-voltage output end of the transformer is electrically connected with loads such as an intelligent control unit to realize power supply to the loads such as the intelligent control unit. The power supply stability of the power taking mode is strongly related to the voltage of the high-voltage bus, the power supply stability is easily influenced by the fluctuation of the bus voltage, under the premise of constant frequency, when the high-voltage bus is in a rated working condition, loads such as an intelligent control unit and the like can normally and stably operate, and when the high-voltage bus is in an undervoltage state, the operating current of the loads such as the intelligent control unit and the like can be obviously increased, the iron core of the transformer is easily saturated, and the iron core is shared by an energy taking circuit of the loads such as the intelligent control unit and the like and the voltage transformer, and the measurement precision of the voltage transformer can be further influenced by the abnormal state of the iron core. The power taking mode of the resistive-capacitive voltage division type electronic voltage sensor is that the resistive-capacitive voltage division circuit is used for directly taking power from a high-voltage bus, the low-voltage side output end of the voltage division circuit is directly connected with loads such as an intelligent control unit, and the like, so that the resistive-capacitive voltage division type electronic voltage sensor has the advantages of small size, low cost, strong external electromagnetic interference resistance, no magnetic core saturation hidden danger and the like, but the core components of the power taking mode are mostly arranged in an exposed mode, a closed protection structure is omitted, the field assembly working procedure of the sensor is complicated, the field assembly workload is greatly increased, the construction efficiency is reduced, and the compact and miniaturized equipment of equipment cannot be realized and is easily influenced by external environment factors. Disclosure of Invention The invention provides an outdoor column vacuum circuit breaker, which is used for solving the defect that the power taking mode of the outdoor column vacuum circuit breaker in the prior art is difficult to meet the requirements of power supply stability, installation convenience, power consumption safety, voltage sampling precision and the like, and can meet the requirements of power supply stability, installation convenience, power consumption safety, voltage sampling precision and the like when power taking is realized. The invention provides an outdoor pole vacuum circuit breaker which comprises a shell, solid-sealed poles, an integrated current sensor, a voltage dividing voltage sensor, a first electrode taking pole and a first power supply, wherein the solid-sealed poles are identical in three-phase structure and are all arranged on the shell, the solid-sealed poles are fixedly sealed with the integrated current sensor and the voltage dividing voltage sensor, the voltage dividing voltage sensor is connected with a movable end conducting rod or a static end conducting rod of the solid-sealed poles, the integrated current sensor is connected with a movable end conducting rod of a vacuum arc extinguishing chamber of the solid-sealed poles, the first electrode taking pole is arranged on the shell, the upper end of the fir