CN210016099U - Fixed isolating switch protection cabinet - Google Patents

Fixed isolating switch protection cabinet Download PDF

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Publication number
CN210016099U
CN210016099U CN201822245727.2U CN201822245727U CN210016099U CN 210016099 U CN210016099 U CN 210016099U CN 201822245727 U CN201822245727 U CN 201822245727U CN 210016099 U CN210016099 U CN 210016099U
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CN
China
Prior art keywords
fixed
bus
assembly
circuit breaker
isolating switch
Prior art date
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Active
Application number
CN201822245727.2U
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Chinese (zh)
Inventor
罗建勤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Shuying Technology Co., Ltd
Original Assignee
SHANGHAI SHUYING ELECTRIC Co Ltd
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Priority to CN201822245727.2U priority Critical patent/CN210016099U/en
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Publication of CN210016099U publication Critical patent/CN210016099U/en
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Abstract

The utility model provides a fixed isolator protection cabinet of going up, including cabinet body assembly, fixed circuit breaker, a static contact, contact box, go up isolator, main bus and a generating line assembly, bus sleeve, fixed multi-functional protection device, switch on generating line, mutual-inductor, fixed ground connection generating line assembly, sensor and insulation board. The utility model discloses absorb the safety of overvoltage and protection other equipment fast, effectively protect the circuit breaker of the cabinet that fixed circuit breaker parallels by fixed multi-functional protection device simultaneously, ensure the effect that fixed circuit breaker large capacity effectively cut-off. A group of upper isolating switches are arranged in front of the circuit breaker to be isolated from the power supply, a reliable insulating gap is established, and equipment or circuits to be overhauled are isolated from the power supply by using obvious disconnection points, so that the safety of maintainers and the equipment is ensured. The arrangement of the insulating plate also plays a role in establishing reliable insulation. Simple structure, convenient operation and practical application value.

Description

Fixed isolating switch protection cabinet
Technical Field
The utility model belongs to the technical field of photovoltaic power generation, national grid distribution, industrial power consumption, concretely relates to fixed isolator protection cabinet that goes up.
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 a fixed isolator protection cabinet of going up, damping and the rate of rise and the amplitude of restraining vacuum circuit breaker transient recovery voltage realize the effect that the current conversion energy dissipation extinguishes magnetism and put out arc.
In order to achieve the above object, the utility model provides a following technical scheme:
a fixed upper isolating switch protection cabinet comprises a cabinet body assembly, a fixed circuit breaker, a primary static contact, a contact box, an upper isolating switch, a main bus and branch bus assembly, a bus sleeve, a fixed multifunctional protection device, a conducting bus, a mutual inductor, a fixed grounding bus assembly, a sensor and an insulating plate; the cabinet body is assembled into a main body part framework, the fixed breaker, a primary static contact, a contact box, an upper isolating switch, a main bus and branch bus assembly, a bus sleeve, a fixed multifunctional protection device, a conduction bus, a mutual inductor, a fixed grounding bus assembly, a sensor and an insulating plate are arranged inside the cabinet body assembly, the main bus and branch bus assembly is connected with the upper isolating switch, the upper isolating switch is connected with the primary static contact and then connected with the fixed breaker, the conduction bus, the mutual inductor, the fixed grounding bus assembly and the sensor to form a complete current and voltage path, the fixed multifunctional protection device is connected with the fixed breaker in parallel, the contact box is arranged at the connection position of the primary static contact and the fixed breaker, the bus sleeve is arranged at the main bus and branch bus assembly position, the insulating plate is arranged among the upper isolating switch, the primary fixed contact, the contact box, the fixed circuit breaker and the fixed multifunctional protection device, wherein the upper isolating switch, the main bus and the branch bus are arranged above the insulating plate, and the primary fixed contact, the contact box, the fixed circuit breaker and the fixed multifunctional protection device are arranged below the insulating plate.
According to an aspect of the present invention, the upper isolation switch may be closed or opened to make or break a circuit.
According to an aspect of the present invention, the main bus bar and the branch bus bar are not assembled on the same straight line.
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, the fixed isolator protection cabinet that goes up that industrial power consumption industry actual demand designed, its simple structure, convenient operation. The fixed multifunctional protection device can effectively protect the circuit breakers of the cabinet with the parallel fixed circuit breakers, and the large-capacity effective breaking effect of the fixed circuit breakers is ensured. A group of upper isolating switches are arranged in front of the circuit breaker to be isolated from the power supply, a reliable insulating gap is established, and equipment or circuits to be overhauled are isolated from the power supply by using obvious disconnection points, so that the safety of maintainers and the equipment is ensured. The arrangement of the insulating plate also plays a role in establishing reliable insulation 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 protection scheme diagram of the present invention.
Description of reference numerals: the device comprises a cabinet body assembly 1, a fixed circuit breaker 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 fixed multifunctional protection device 8, a conducting bus 9, a mutual inductor 10, a fixed grounding bus assembly 11, a sensor 12 and an insulating plate 13.
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, the utility model discloses a fixed isolator protection cabinet of going up comprises cabinet body assembly 1, fixed circuit breaker 2, primary static contact 3, contact box 4, last isolator 5, main bus and branch generating line assembly 6, bus bar sleeve pipe 7, fixed multi-functional protection device 8, switch on generating line 9, mutual-inductor 10, fixed ground connection generating line assembly 11, sensor 12, insulation board 13.
Referring to fig. 1, the action association of the present invention is: the cabinet body assembly 1 is a main body part framework of the cabinet, the interior of the cabinet body assembly 1 is mainly formed by connecting a main bus and a branch bus assembly 6 with an upper isolating switch 5, then connecting a primary static contact 3 with a fixed breaker 2, then connecting the fixed breaker with a conducting bus 9, a mutual inductor 10, a fixed grounding bus assembly 11 and a sensor 12 to form a complete current and voltage path, the fixed multifunctional protection device 8 is connected with the fixed circuit breaker 2 in parallel, the contact box 4 is set for protecting the insulation grade requirement of the joint of the primary static contact 3 and the fixed circuit breaker 2, the bus sleeve 7 is set for protecting the insulation grade requirement of the main bus and branch bus assembly 6, and the insulation board 13 is set between the upper isolating switch 5, the main bus and branch bus assembly 6 on the upper part and the primary static contact 3, the contact box 4, the fixed circuit breaker 2 and the fixed multifunctional protection device 8 on the lower part. Fig. 2 is a protection scheme diagram of the present invention, showing the structure of the present invention.
Referring to fig. 1, 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 a generating line assembly 6 to a static contact 3 and fixed circuit breaker 2 again with switch on generating line 9, mutual-inductor 10, fixed ground connection generating line assembly 11, sensor 12 formation a complete electric current, voltage path, carry out direct absorption and get into the ground through switching on generating line 9, mutual-inductor 10, fixed ground connection generating line assembly 11 by fixed multi-functional protection device 8, embodied the utility model discloses a function and the safety of protecting other equipment of quick absorption overvoltage. Meanwhile, the fixed multifunctional protection device 8 effectively protects the circuit breakers of the cabinet with the fixed circuit breakers 2 arranged in parallel, and the effect of large-capacity effective breaking of the fixed circuit breakers 2 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, a reliable insulating gap is established, and equipment or circuits to be overhauled are isolated from the power supply by obvious disconnection points, so that the safety of maintainers and the equipment is ensured. The provision of the insulating plate 13 also serves to establish reliable insulation to ensure the safety of the service personnel 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 (4)

1. The utility model provides a fixed isolator protection cabinet that goes up which characterized in that: the device comprises a cabinet body assembly, a fixed circuit breaker, a primary static contact, a contact box, an upper isolating switch, a main bus and branch bus assembly, a bus sleeve, a fixed multifunctional protection device, a conducting bus, a mutual inductor, a fixed grounding bus assembly, a sensor and an insulating plate; the cabinet body is assembled into a main body part framework, the fixed breaker, a primary static contact, a contact box, an upper isolating switch, a main bus and branch bus assembly, a bus sleeve, a fixed multifunctional protection device, a conduction bus, a mutual inductor, a fixed grounding bus assembly, a sensor and an insulating plate are arranged inside the cabinet body assembly, the main bus and branch bus assembly is connected with the upper isolating switch, the upper isolating switch is connected with the primary static contact and then connected with the fixed breaker, the conduction bus, the mutual inductor, the fixed grounding bus assembly and the sensor to form a complete current and voltage path, the fixed multifunctional protection device is connected with the fixed breaker in parallel, the contact box is arranged at the connection position of the primary static contact and the fixed breaker, the bus sleeve is arranged at the main bus and branch bus assembly position, the insulating plate is arranged among the upper isolating switch, the primary fixed contact, the contact box, the fixed circuit breaker and the fixed multifunctional protection device, wherein the upper isolating switch, the main bus and the branch bus are arranged above the insulating plate, and the primary fixed contact, the contact box, the fixed circuit breaker and the fixed multifunctional protection device are arranged below the insulating plate.
2. A fixed overhead switchgear cabinet according to claim 1 wherein: the upper isolation switch may be closed or opened to complete or break the circuit.
3. A fixed overhead switchgear cabinet according to claim 1 wherein: the main bus and the branch bus are not assembled on the same straight line.
4. A fixed overhead switchgear cabinet according to claim 1 wherein: and a sensor is also arranged on a circuit between the upper isolating switch and the primary static contact.
CN201822245727.2U 2018-12-29 2018-12-29 Fixed isolating switch protection cabinet Active CN210016099U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201822245727.2U CN210016099U (en) 2018-12-29 2018-12-29 Fixed isolating switch protection cabinet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201822245727.2U CN210016099U (en) 2018-12-29 2018-12-29 Fixed isolating switch protection cabinet

Publications (1)

Publication Number Publication Date
CN210016099U true CN210016099U (en) 2020-02-04

Family

ID=69312139

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201822245727.2U Active CN210016099U (en) 2018-12-29 2018-12-29 Fixed isolating switch protection cabinet

Country Status (1)

Country Link
CN (1) CN210016099U (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.