CN210016170U - Upper and lower isolator protection cabinet - Google Patents

Upper and lower isolator protection cabinet Download PDF

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Publication number
CN210016170U
CN210016170U CN201822245729.1U CN201822245729U CN210016170U CN 210016170 U CN210016170 U CN 210016170U CN 201822245729 U CN201822245729 U CN 201822245729U CN 210016170 U CN210016170 U CN 210016170U
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CN
China
Prior art keywords
handcart
bus
isolating switch
assembly
protection device
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Application number
CN201822245729.1U
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Chinese (zh)
Inventor
罗建勤
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Shanghai Shuying Technology Co., Ltd
Original Assignee
SHANGHAI SHUYING ELECTRIC Co Ltd
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Priority to CN201822245729.1U priority Critical patent/CN210016170U/en
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Publication of CN210016170U publication Critical patent/CN210016170U/en
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Abstract

The utility model provides an upper and lower isolator protection cabinet, including cabinet body assembly, circuit breaker handcart, a static contact, contact box, go up isolator, main bus and the assembly of branch generating line, bus sleeve, the multi-functional protection device of handcart-type, switch on the generating line, isolator, mutual-inductor, fixed ground connection generating line assembly, sensor, insulation board and aviation socket down. The handcart type multifunctional protector can effectively protect the circuit breakers of the cabinets with the circuit breaker handcart arranged in parallel, and ensures the effect of effectively breaking the circuit breaker handcart in large capacity. An upper isolating switch and a lower isolating switch are arranged in front of and behind the circuit breaker, a reliable insulating gap is established, and equipment or a circuit to be overhauled is separated from a power supply by an obvious disconnection point, so that the safety of maintainers and the equipment is ensured. The arrangement of the insulating plate and the aviation socket plays a role in establishing reliable insulation. Simple structure, convenient operation and practical application value.

Description

Upper and lower isolator protection cabinet
Technical Field
The utility model belongs to the technical field of photovoltaic power generation, state net distribution, industrial power consumption, concretely relates to upper and lower isolator protection cabinet.
Background
The quick breaking capacity of fault short-circuit current is one of the most important performances of the circuit breaker, after the contacts of the circuit breaker are separated, electric arcs are generated between the contacts, transient recovery voltage appears at the two ends of the contacts when the electric arc current passes zero, and the transient recovery voltage rising rate and the amplitude value are the most important factors influencing whether the circuit breaker can be broken or not, and whether the arc extinguishing of the circuit breaker is successful or not is mainly determined by the transient recovery voltage rising rate and the amplitude value. With the continuous expansion of the transmission capacity of the power system, the level of the short-circuit current of the power grid is continuously increased, and when the maximum short-circuit current exceeds the rated short-circuit on-off current of the breaker, the breaker can have the accident that the short-circuit fault cannot be switched off due to arc extinction failure. Generally, three-phase short circuit is the most serious, and short circuit current can reach tens of thousands or even hundreds of thousands of amperes, so that the heat and force generated by the large current can cause damage to electrical equipment, such as burning of a stator winding of a generator, explosion of a transformer and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an upper and lower isolator protection cabinet, damping and suppression vacuum circuit breaker transient recovery voltage's rate of rise and amplitude realize the effect that the current conversion energy dissipation extinguishes magnetism and put out the arc.
In order to achieve the above object, the utility model provides a following technical scheme:
an upper and lower isolating switch protection cabinet comprises a cabinet body assembly, a circuit breaker handcart, a primary static contact, a contact box, an upper isolating switch, a main bus and branch bus assembly, a bus sleeve, a handcart type multifunctional protection device, a conducting bus, a lower isolating switch, a mutual inductor, a fixed grounding bus assembly, a sensor, an insulating plate and an aviation socket; the cabinet body assembly is a main body part framework, the breaker handcart, a primary static contact, a contact box, an upper isolating switch, a main bus and a branch bus assembly, a bus sleeve, a handcart type multifunctional protection device, a conduction bus, a lower isolating switch, a mutual inductor, a fixed grounding bus assembly, a sensor and an insulation board are installed inside the cabinet body assembly, the main bus and the branch bus assembly are connected with the upper isolating switch, the upper isolating switch is connected with the primary static contact and then connected with the breaker handcart, the conduction bus, the lower isolating switch, the mutual inductor, the fixed grounding bus assembly and the sensor to form a complete current-voltage circuit, the handcart type multifunctional protection device is connected with the breaker handcart in parallel, the contact box is installed at the connection part of the primary static contact and the breaker handcart, the bus sleeve is installed at the main bus and branch bus assembly part, the insulating board sets up between handcart-type multi-functional protection device and other devices, will handcart-type multi-functional protection device encloses, and the insulating board is connected the aviation socket.
According to an aspect of the utility model, circuit breaker handcart, the multi-functional protection device of handcart-type can the electric migration respectively, thereby with a static contact is connected or is separated.
According to one aspect of the present invention, the upper and lower disconnectors may be closed or opened to connect or disconnect a circuit.
According to one aspect of the present invention, the main bus bar and the branch bus bar are vertically arranged from top to bottom.
According to an aspect of the present invention, the upper isolation switch and the line between the primary static contacts are also provided with a sensor.
Due to the adoption of the scheme, the beneficial effects of the utility model are that:
the utility model discloses a to photovoltaic power generation, state net distribution, upper and lower isolator protection cabinet that industrial power consumption trade actual demand designed, its simple structure, convenient operation. The handcart type multifunctional protection device and the circuit breaker handcart can be pushed out, the handcart type multifunctional protection device effectively protects the circuit breakers of the cabinets parallel to the circuit breaker handcart, and the effect of effectively switching on and off the circuit breaker handcart in large capacity is ensured. Because the bus supplies power downwards through the cabinet from the top, a group of upper disconnecting switches are arranged in front of the circuit breaker and isolated from a power supply, and a group of lower disconnecting switches are arranged behind the circuit breaker and isolated from a load, a reliable insulating gap is established, and equipment or a circuit to be overhauled is isolated from the power supply by an obvious disconnection point, so that the safety of maintainers and the equipment is ensured. The arrangement of the insulating plate and the aviation socket plays a role in establishing reliable insulation for the handcart type multifunctional protection device so as to ensure the safety of maintainers and equipment. The method provides effective support for current conversion, energy dissipation, magnetic extinction and arc extinction in the photovoltaic power generation, national grid power distribution and industrial power utilization industries, and has practical application value.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a side view of the present invention.
Fig. 3 is a protection scheme diagram of the present invention.
Description of reference numerals: the device comprises a cabinet body assembly 1, a breaker handcart 2, a primary static contact 3, a contact box 4, an upper isolating switch 5, a main bus and branch bus assembly 6, a bus sleeve 7, a handcart type multifunctional protection device 8, a conducting bus 9, a lower isolating switch 10, a mutual inductor 11, a fixed grounding bus assembly 12, a sensor 13, an insulating plate 14 and an aviation socket 15.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 and 2, the utility model discloses an upper and lower isolator protection cabinet comprises cabinet body assembly 1, circuit breaker handcart 2, primary static contact 3, contact box 4, last isolator 5, main bus and branch generating line assembly 6, bus sleeve 7, the multi-functional protection device of handcart-type 8, switch on generating line 9, isolator 10, mutual-inductor 11, fixed ground connection generating line assembly 12, sensor 13, insulation board 14, aviation socket 15 down.
Referring to fig. 1 and 2, the action association of the present invention is: the cabinet body assembly 1 is a main body part framework of the cabinet, the cabinet body assembly 1 is internally mainly formed by connecting a main bus and a branch bus assembly 6 with an upper isolating switch 5 and then with a primary static contact 3, a breaker handcart 2 and then with a conducting bus 9, a lower isolating switch 10, an mutual inductor 11, a fixed grounding bus assembly 12 and a sensor 13 to form a complete current and voltage path, and connecting a handcart type multifunctional protection device 8 and the breaker handcart 2 in parallel, the handcart type multifunctional protection device 8 and the breaker handcart 2 can be pushed in and pushed out, a contact box 4 is set for protecting the insulation grade requirement of the connection part of the primary static contact 3 and the breaker handcart 2, a bus sleeve 7 is set for protecting the insulation grade requirement of the main bus and the branch bus assembly 6, an insulating plate 14 is set between the handcart type multifunctional protection device 8 and other devices to enclose the handcart type multifunctional protection device 8, the insulating plate 14 is connected to an aviation socket 15. Fig. 3 is a protection scheme diagram of the present invention, showing the structure of the present invention.
Referring to fig. 1 and 2, the protection principle of the present invention is: this cabinet is arranged side by side with other bus-bar cabinets, so when various overvoltage risees appear on this whole generating line, through main bus and branch generating line assembly 6 to one time static contact 3 and circuit breaker handcart 2 again with switch on generating line 9, mutual-inductor 11, fixed ground connection generating line assembly 12, sensor 13 form a complete electric current, voltage path, carry out direct absorption and get into the ground through switching on generating line 9, mutual-inductor 11, fixed ground connection generating line assembly 12 by handcart-type multifunctional protection device 8, embodied the utility model discloses a function and the safety of protecting other equipment of quick absorption overvoltage. Meanwhile, the handcart type multifunctional protection device 8 effectively protects the circuit breakers of the cabinets parallel to the circuit breaker handcart 2, and the effect of effectively switching on and off the circuit breaker handcart 2 in large capacity is ensured. Because the main bus and the branch bus assembly 6 supply power downwards through the cabinet from the top, a group of upper isolating switches 5 are arranged in front of the circuit breaker to be isolated from a power supply, and a group of lower isolating switches 10 are arranged behind the circuit breaker to be isolated from a load, so that a reliable insulating gap is established, and equipment or a line to be overhauled is separated from the power supply by an obvious disconnection point, so that the safety of overhaulers and the equipment is ensured. The arrangement of the insulating plate 14 and the aviation socket 15 plays a role in establishing reliable insulation for the handcart type multifunctional protection device 8 so as to ensure the safety of maintainers and equipment.
The embodiments described above are described to facilitate understanding and application of the present patent to those of ordinary skill in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the embodiments herein, and those skilled in the art should understand that modifications and alterations made without departing from the scope of the present invention are within the protection scope of the present invention.

Claims (5)

1. The utility model provides an upper and lower isolator protection cabinet which characterized in that: the device comprises a cabinet body assembly, a circuit breaker handcart, a primary static contact, a contact box, an upper isolating switch, a main bus and branch bus assembly, a bus sleeve, a handcart type multifunctional protection device, a conducting bus, a lower isolating switch, a mutual inductor, a fixed grounding bus assembly, a sensor, an insulating plate and an aviation socket; the cabinet body assembly is a main body part framework, the breaker handcart, a primary static contact, a contact box, an upper isolating switch, a main bus and a branch bus assembly, a bus sleeve, a handcart type multifunctional protection device, a conduction bus, a lower isolating switch, a mutual inductor, a fixed grounding bus assembly, a sensor and an insulation board are installed inside the cabinet body assembly, the main bus and the branch bus assembly are connected with the upper isolating switch, the upper isolating switch is connected with the primary static contact and then connected with the breaker handcart, the conduction bus, the lower isolating switch, the mutual inductor, the fixed grounding bus assembly and the sensor to form a complete current-voltage circuit, the handcart type multifunctional protection device is connected with the breaker handcart in parallel, the contact box is installed at the connection part of the primary static contact and the breaker handcart, the bus sleeve is installed at the main bus and branch bus assembly part, the insulating board sets up between handcart-type multi-functional protection device and other devices, will handcart-type multi-functional protection device encloses, and the insulating board is connected the aviation socket.
2. The upper and lower isolating switch protection cabinet according to claim 1, characterized in that: the circuit breaker handcart and the handcart type multifunctional protection device can be electrically moved respectively, so that the circuit breaker handcart and the handcart type multifunctional protection device can be connected with or separated from the primary static contact.
3. The upper and lower isolating switch protection cabinet according to claim 1, characterized in that: the upper isolating switch and the lower isolating switch can be closed or opened, so that the circuit is switched on or off.
4. The upper and lower isolating switch protection cabinet according to claim 1, characterized in that: the main bus bar and the branch bus bar are assembled and longitudinally arranged from top to bottom.
5. The upper and lower isolating switch protection cabinet according to claim 1, characterized in that: and a sensor is also arranged on a circuit between the upper isolating switch and the primary static contact.
CN201822245729.1U 2018-12-29 2018-12-29 Upper and lower isolator protection cabinet Active CN210016170U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201822245729.1U CN210016170U (en) 2018-12-29 2018-12-29 Upper and lower isolator protection cabinet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201822245729.1U CN210016170U (en) 2018-12-29 2018-12-29 Upper and lower isolator protection cabinet

Publications (1)

Publication Number Publication Date
CN210016170U true CN210016170U (en) 2020-02-04

Family

ID=69312143

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201822245729.1U Active CN210016170U (en) 2018-12-29 2018-12-29 Upper and lower isolator protection cabinet

Country Status (1)

Country Link
CN (1) CN210016170U (en)

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Address after: South District of 11 Third Building, 2285 Tingwei Highway, Jinshan District, Shanghai, 200540

Patentee after: Shanghai Shuying Technology Co., Ltd

Address before: South District of 11 Third Building, 2285 Tingwei Highway, Jinshan District, Shanghai, 200540

Patentee before: SHANGHAI SHUYING ELECTRIC CO., LTD.