CN219086874U

CN219086874U - Device convenient for standby storage battery to be assembled into direct-current system of transformer substation

Info

Publication number: CN219086874U
Application number: CN202223271880.5U
Authority: CN
Inventors: 贾京龙; 侯雅晓; 程一凡; 张海星; 马云龙; 史雷敏; 张丽娟; 陈建军; 邢毅川
Original assignee: Xuchang Power Supply Co of Henan Electric Power Co
Current assignee: Xuchang Power Supply Co of Henan Electric Power Co
Priority date: 2022-12-07
Filing date: 2022-12-07
Publication date: 2023-05-26
Anticipated expiration: 2032-12-07

Abstract

The utility model discloses a device for facilitating the assembly of a backup storage battery into a direct current system of a transformer substation, which comprises a shell, wherein an isolating switch and a protection fuse are arranged in the shell, the upper wiring end of the isolating switch is connected with a bus wiring end, the bus wiring end is connected with a movable clamp through a wire, the movable clamp is connected with the upper wiring end of the storage battery fuse, which is connected with a bus, the lower wiring end of the isolating switch is connected with the protection fuse, the lower wiring end of the protection fuse is connected with a battery wiring end, the battery wiring end is connected with the backup storage battery through a wire, and the upper wiring end and the lower wiring end of the isolating switch are also respectively connected with a bus voltmeter and a battery voltmeter; in general, the utility model has the advantages of safety, reliability, convenient operation and labor saving.

Description

Device convenient for standby storage battery to be assembled into direct-current system of transformer substation

Technical Field

The utility model belongs to the technical field of transformer substation direct current systems, and particularly relates to a device for facilitating the assembly of a standby storage battery into a transformer substation direct current system.

Background

In order to supply direct current loads such as relay protection, control, signals, computer monitoring, accident lighting, alternating current uninterrupted power supply and the like, a direct current system powered by a storage battery is arranged in a transformer substation, and the general transformer substation direct current system consists of four parts of the storage battery, a charging device, a direct current loop and the direct current load, wherein the four parts supplement each other to form an indivisible organism.

The storage battery is a core part of a direct current system of a transformer substation, scientific maintenance of the storage battery is core work of the direct current system, a single group of storage batteries is usually arranged in the transformer substation with the voltage class of 110 kilovolts or below at present, when the direct current power supply system for the station is required to operate in eighteen power grids of the national power grid limited company (revised version in 2018), the storage battery is forbidden to be separated from a direct current bus, so that when the operation storage battery is replaced, a standby storage battery needs to be connected to temporarily replace the function of the operation storage battery, so that the direct current system is prevented from being separated from the operation storage battery, and the following two methods are mainly adopted for connecting the standby storage battery in the prior art:

(1) The outgoing line of the standby storage battery is fixed on the direct current busbar through the screw, but the method needs to fasten the screw on the direct current busbar, because the position of the direct current busbar is usually narrow in space, low-voltage electric shock is very easy to cause or the positive and negative poles of the direct current busbar are short-circuited, the danger to the human body and the power grid is very high, and meanwhile, the direct current busbar is always free of redundant screw holes for fixing the outgoing line, so that the method cannot be adopted; in addition, the direct current of the standby storage battery has a great potential safety hazard when the direct current bus is in short circuit, and the standby storage battery can bear short-circuit heavy current because of no protection electric appliance, so that the standby storage battery is damaged, even burnt out, and fire disaster is caused.

(2) The method can ensure that the standby storage battery pack has the protection of the storage battery fuse, but the standby storage battery pack is required to be connected to the lower end of the outlet circuit fuse of the operation storage battery pack, the outlet line of the operation storage battery pack is required to be removed firstly, then the standby storage battery pack is connected to the outlet circuit fuse of the operation storage battery pack, the direct current system is generally required to be disconnected from the operation of the storage battery pack within five minutes from the removal to the connection, once the station alternating current power supply system is abnormal, the serious consequence that the whole station direct current power supply is completely disappeared is caused, if the power system is in failure at this time, the circuit breaker cannot trip due to the loss of the direct current power supply, the electrical equipment such as a transformer is burnt by strong short-circuit current, the substation equipment is seriously damaged, even a large-scale power failure accident of a power grid is caused, and serious economic loss and bad social influence are caused.

Therefore, to solve the above-mentioned problems, it is necessary to develop a device that facilitates the assembly of the backup battery into the dc system of the substation.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides a device which is convenient for a standby storage battery to be assembled into a direct current system of a transformer substation, can ensure that a direct current bus is not separated from a storage battery to operate when the standby storage battery is assembled, is safer and more reliable to use, can provide protection for the standby storage battery, prevents the standby storage battery from being damaged by short-circuit heavy current impact, reduces loss, and is safe, convenient and labor-saving to operate.

The purpose of the utility model is realized in the following way: the utility model provides a device convenient to reserve battery access substation direct current system, includes the shell, the inside isolator and the protection fuse that is provided with of shell, isolator upper wiring end connects the busbar wiring end, the busbar wiring end passes through the conductor and connects movable clip-on clamp, movable clip-on clamp connects the upper wiring end that battery fuse and busbar are connected, the lower wiring end of isolator connects the protection fuse, the lower wiring end of protection fuse connects the battery wiring end, the battery wiring end passes through the conductor and connects reserve battery, isolator's upper wiring end and lower wiring end department still are connected with busbar voltmeter and battery voltmeter respectively; the movable clamp type clamp comprises an insulating handle, one end of the insulating handle is fixedly connected with a connecting plate, the other end of the connecting plate is fixedly connected with a fixed clamping plate, one end of the fixed clamping plate is provided with a binding post, one side of the connecting plate is fixedly provided with a supporting plate, a screw rod is rotatably arranged in the supporting plate in a penetrating mode, one end of the screw rod, which is close to the fixed clamping plate, is connected with a movable clamping plate, the other end of the screw rod is provided with an insulating operation handle, and a clamping space is formed between the fixed clamping plate and the movable clamping plate.

Further, the isolating switch operation end, the bus binding post, the battery binding post, the bus voltmeter dial plate and the battery voltmeter dial plate are arranged on the surface of the shell, wherein the isolating switch operation end is connected with the isolating switch inside the shell, the bus binding post is connected with the bus binding post inside the shell, the battery binding post is connected with the battery binding post inside the shell, the bus voltmeter dial plate is connected with the bus voltmeter inside the shell, and the battery voltmeter dial plate is connected with the battery voltmeter inside the shell.

Further, the movable clamp clip adopts a single stranded soft copper wire with the diameter of 35mm to be connected with a bus terminal.

Further, the connecting plate, the fixed clamping plate, the binding post, the supporting plate, the screw rod and the movable clamping plate all adopt conductive structures.

Further, the fixed clamping plate, the movable clamping plate and the supporting plate are arranged in parallel in pairs and are perpendicular to the connecting plate and the insulating handle.

Further, one end of the movable clamping plate, which is close to the connecting plate, is slidably connected with the connecting plate through a sliding groove sliding block assembly, and at the moment, the screw rod is rotatably connected with the movable clamping plate through a rotating bearing.

Further, the isolating switch and the protection fuse adopt an isolating switch and a fuse with rated current of 250A.

The beneficial effects of the utility model are as follows:

(1) By selecting the upper wiring end of the storage battery fuse as an access point, the operation space is wide and is not limited by the narrow space between the direct current bus bars, and is not limited by whether the direct current bus bars have redundant screw hole sites or not, so that the risks of personal electric shock and short circuit of the direct current bus bars can be effectively avoided, and the operation is more convenient and safer;

(2) The movable clamp is connected to the upper wiring end of the battery fuse, the direct current bus and the standby battery pack are disconnected through the isolating switch, the outgoing cable of the battery pack can be removed firstly during connection, meanwhile, the standby battery pack is connected to the direct current bus rapidly through closing of the isolating switch, the risk that the battery pack is separated from the direct current bus is avoided, and the battery pack is safer and more reliable;

(3) The fuse is arranged in the device to be used as a protection electrical appliance, so that when the standby storage battery is connected with the direct current bus and encounters short-circuit high-current impact, the standby storage battery is protected by fusing the fuse, the damage of the standby storage battery is prevented, and the loss is reduced;

(4) The voltage meter is arranged at the upper and lower wiring ends of the isolating switch respectively and used for detecting the voltage of the direct-current bus and the voltage of the standby storage battery pack, so that the purpose of checking whether the polarities of the upper and lower wiring ends of the isolating switch are consistent is realized, when the voltages are the same, the switch can be closed, when the voltages are opposite, the polarity is wrong, the line adjustment is needed, and the operation is more convenient;

in general, the utility model has the advantages of safety, reliability, convenient operation and labor saving.

Drawings

Fig. 1 is a schematic view of the external wiring structure of the present utility model.

Fig. 2 is a schematic diagram of the internal principle structure of the present utility model.

Fig. 3 is a schematic view of the structure of the movable clamp clip according to the present utility model.

In the figure: 00. the operation battery pack 01, the battery fuse 02, the bus 03, the standby battery pack 1, the housing 2, the isolating switch 3, the protection fuse 4, the bus terminal 5, the movable clamp 6, the battery terminal 7, the bus voltmeter 8, the battery voltmeter 501, the insulating handle 502, the connecting plate 503, the fixed clamping plate 504, the binding post 505, the supporting plate 506, the screw 507, the movable clamping plate 508, the insulating handle 201, the isolating switch operating end 401, the bus binding post 601, the battery binding post 701, the bus voltmeter dial 801 and the battery voltmeter dial.

Detailed Description

The technical scheme of the utility model is further specifically described below with reference to the accompanying drawings.

As shown in fig. 1, 2 and 3, the device for facilitating the standby storage battery 03 to be connected into the direct-current bus 02 of the transformer substation comprises a shell 1, wherein an isolating switch 2 and a protection fuse 3 are arranged in the shell 1, the upper wiring end of the isolating switch 2 is connected with a bus wiring end 4, the bus wiring end 4 is connected with a movable clamp 5 through a wire, preferably, the movable clamp 5 is connected with the bus wiring end 4 through a single multi-strand soft copper wire with the length of 35mm, the movable clamp 5 is connected with the upper wiring end of the battery fuse 01, which is connected with the bus 02, the lower wiring end of the isolating switch 2 is connected with the protection fuse 3, the lower wiring end of the protection fuse 3 is connected with a battery wiring end 6, the battery 6 is connected with the standby storage battery 03 through a wire, and the upper wiring end and the lower wiring end of the isolating switch 2 are also respectively connected with a bus voltage meter 7 and a battery voltage meter 8.

Specifically, be provided with isolator operating end 201, bus bar terminal 401, battery terminal 601, bus bar voltmeter dial plate 701 and battery voltmeter dial plate 801 on the shell 1 surface, wherein isolator 2 inside shell 1 is connected to isolator operating end 201, bus bar terminal 401 connects the inside bus bar terminal 4 of shell 1, battery terminal 6 inside shell 1 is connected to battery terminal 601, bus bar voltmeter dial plate 701 connects the inside bus bar voltmeter 7 of shell 1, battery voltmeter dial plate 801 connects the inside battery voltmeter 8 of shell 1, and during the concrete installation connection, bus bar terminal 401 passes through the terminal of wire connection movable clamp 5, and movable clamp 5 centre gripping is connected battery fuse 01 and is connected to the upper wiring of battery terminal 601 through wire connection spare storage battery 03.

The isolating switch 2 plays a role of breaking the direct current bus 02 and the standby storage battery 03, the protection fuse 3 plays a role of protecting the standby storage battery 03, the upper wiring end of the isolating switch 2 is connected with the movable clamp 5 through the bus wiring end 4 and the lead, the movable clamp 5 is clamped on the upper wiring end of the storage battery fuse 01, namely one end of the storage battery fuse 01 connected with the bus 02, the movable clamp 5 is specifically and fixedly clamped on a copper bar at the upper wiring end of the storage battery fuse 01, preferably, the isolating switch 2 and the protection fuse 3 adopt isolating switches and fuses with rated current of 250A, specifically, the isolating switch 2 can adopt isolating switches with rated current of 250A and model GM5-250G/2G 250A, the protection fuse 3 can adopt fuses with rated current of 250A and model RT 36-1A, meanwhile, the bus voltmeter 7 and the battery voltmeter 8 are mainly used for detecting the voltage of the direct current bus 02 and the voltage of the standby storage battery 03 so as to check whether the upper end and the lower end of the isolating switch 2 are identical, and therefore the current meter can be realized.

Wherein the movable clamp 5 comprises an insulating handle 501, one end of the insulating handle 501 is fixedly connected with a connecting plate 502, the other end of the connecting plate 502 is fixedly connected with a fixed clamping plate 503, one end of the fixed clamping plate 503 is provided with a binding post 504, one side of the connecting plate 502 is fixedly provided with a supporting plate 505, a screw rod 506 is rotatably arranged on the supporting plate 505 in a penetrating way, one end of the screw rod 506, which is close to the fixed clamping plate 503, is connected with a movable clamping plate 507, the other end of the screw rod 506 is provided with an insulating operation handle 508, a clamping space is formed between the fixed clamping plate 503 and the movable clamping plate 507, specifically, the fixed clamping plate 503, the movable clamping plate 507 and the supporting plate 505 are arranged in parallel to each other and are simultaneously perpendicular to the connecting plate 502 and the insulating handle 501, the connecting plate 502, the fixed clamping plate 503, the binding post 504, the supporting plate 505, the screw rod 506 and the movable clamping plate 507 all adopt conductive structures, it should be noted that the conductive structure belongs to the prior art, may be implemented by various available prior arts such as conductive metal, for example, may be specifically made of brass, which belongs to common knowledge of those skilled in the art, so that it is not specifically limited herein, preferably, one end of the movable clamping plate 507 close to the connecting plate 502 is slidably connected with the connecting plate 502 through a sliding groove sliding block assembly, at this time, the screw 506 is rotatably connected with the movable clamping plate 507 through a rotating bearing, through the arrangement of the sliding groove sliding block assembly, the moving process of the movable clamping plate 507 is limited when the screw 506 rotationally pushes the movable clamping plate 507 to move back and forth, so that the movement of the movable clamping plate 507 is more stable and reliable, it should be noted that the sliding groove sliding block assembly belongs to the prior art, which belongs to common knowledge of those skilled in the art, therefore, the present utility model is not limited thereto.

Specifically, through handheld insulating handle 501, will place the copper bar department of wiring end department on the battery fuse 01 that needs the centre gripping by fixed splint 503 and movable splint 507, place the copper bar in the centre gripping space that forms by fixed splint 503 and movable splint 507, through insulating handle 508 rotation screw rod 506, screw rod 506 promotes movable splint 507 to the direction removal of fixed splint 503 and reduce the size in centre gripping space, until fixed splint 503 and movable splint 507 are closely connected with the both sides of copper bar, accomplish the installation promptly with the copper bar centre gripping is fixed, during the dismantlement, only need reverse rotation screw rod 506 drive movable splint 507 to keep away from the size in side removal increase centre gripping space of fixed splint 503 for movable splint 507 and fixed splint 503 and copper bar separation can accomplish the dismantlement, the simple operation is laborsaving.

In the specific implementation of the utility model, during normal operation, the isolating switch 2 is positioned in a split position, the movable clamp 5 is clamped on a copper bar at the upper wiring end of the battery fuse 01, the wiring terminal 504 on the movable clamp 5 is connected with the bus wiring terminal 401 on the device shell 1 through a lead, the battery wiring terminal 601 on the device shell 1 is connected with the standby battery 03, the readings of the bus voltmeter 7 and the battery voltmeter 8 are checked, the readings are identical, the polarities of the upper end and the lower end of the isolating switch 2 are identical, the polarities are different, the polarities are required to be adjusted to be identical, when the polarities are identical, the isolating switch 2 can be switched on, the standby battery 03 can be connected into the direct current bus 02, then the battery fuse 01 is disconnected, the operation of the battery fuse 00 is withdrawn, the direct current bus is not separated from the operation of the battery, the potential safety hazard is eliminated, and the standby battery also operates under protection, and is safer and more reliable.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The utility model provides a device convenient to reserve battery access substation direct current system which characterized in that: the battery protection device comprises a shell (1), wherein an isolating switch (2) and a protection fuse (3) are arranged in the shell (1), a bus terminal (4) is connected with an upper terminal of the isolating switch (2), the bus terminal (4) is connected with a movable clamp clip (5) through a wire, the movable clamp clip (5) is connected with an upper terminal of a battery fuse (01) connected with a bus (02), a lower terminal of the isolating switch (2) is connected with the protection fuse (3), a lower terminal of the protection fuse (3) is connected with a battery terminal (6), the battery terminal (6) is connected with a standby battery pack (03) through a wire, and a bus voltmeter (7) and a battery voltmeter (8) are respectively connected with the upper terminal and the lower terminal of the isolating switch (2); wherein, movable clamp type clamp (5) include insulating handle (501), the one end fixedly connected with connecting plate (502) of insulating handle (501), the other end fixedly connected with fixed splint (503) of connecting plate (502), the one end of fixed splint (503) is provided with terminal (504), the fixed backup pad (505) that is provided with in one side of connecting plate (502), rotatable run through in backup pad (505) and be provided with screw rod (506), the one end that screw rod (506) is close to fixed splint (503) is connected with movable splint (507), the other end of screw rod (506) is provided with insulating operating handle (508), form the centre gripping space between fixed splint (503) and the movable splint (507).

2. An apparatus for facilitating access to a substation dc system by a backup battery as defined in claim 1, wherein: be provided with isolator operating end (201), bus bar terminal (401), battery terminal (601), bus bar voltmeter dial plate (701) and battery voltmeter dial plate (801) on the surface of shell (1), wherein isolator operating end (201) connect inside isolator (2) of shell (1), bus bar terminal (4) inside bus bar terminal (401) connect shell (1), battery terminal (6) inside battery terminal (601) connect shell (1), bus bar voltmeter dial plate (701) connect inside bus bar voltmeter (7) of shell (1), battery voltmeter dial plate (801) connect inside battery voltmeter (8) of shell (1).

3. An apparatus for facilitating access to a substation dc system by a backup battery as defined in claim 1, wherein: the movable pincer-shaped clamp (5) is connected with the bus terminal (4) by adopting a single stranded soft copper wire with the diameter of 35 mm.

4. An apparatus for facilitating access to a substation dc system by a backup battery as defined in claim 1, wherein: the connecting plate (502), the fixed clamping plate (503), the binding post (504), the supporting plate (505), the screw (506) and the movable clamping plate (507) all adopt conductive structures.

5. An apparatus for facilitating access to a substation dc system by a backup battery as defined in claim 1, wherein: the fixed clamping plate (503), the movable clamping plate (507) and the supporting plate (505) are arranged in parallel two by two and are perpendicular to the connecting plate (502) and the insulating handle (501) at the same time.

6. An apparatus for facilitating access to a substation dc system by a backup battery as defined in claim 1, wherein: one end of the movable clamping plate (507) close to the connecting plate (502) is slidably connected with the connecting plate (502) through a sliding groove sliding block assembly, and at the moment, the screw (506) is rotatably connected with the movable clamping plate (507) through a rotating bearing.

7. An apparatus for facilitating access to a substation dc system by a backup battery as defined in claim 1, wherein: the isolating switch (2) and the protection fuse (3) adopt isolating switches and fuses with rated current of 250A.