CN217508345U

CN217508345U - Uninterrupted DC power supply transition device

Info

Publication number: CN217508345U
Application number: CN202123323050.8U
Authority: CN
Inventors: 霍丹; 向新宇; 王成; 段立立; 蒋良敏; 孙玉玮
Original assignee: State Grid Corp of China SGCC; Hangzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Current assignee: State Grid Corp of China SGCC; Hangzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-09-27
Anticipated expiration: 2031-12-27

Abstract

The utility model discloses a DC power supply transition device does not have a power failure, including the main tank body, set up last terminal, lower terminal, pressure differential display device, first digital display table, second digital display table, parallel switch and the external joint subassembly on the main tank body upper cover, it is connected with the external power supply electricity to go up the terminal, the terminal is connected with the external joint subassembly electricity down, first digital display table sets up the magnitude of voltage that last terminal end is used for detecting DC input, second voltage display sets up the magnitude of voltage that the lower terminal is used for detecting DC output voltage, pressure differential display device is used for showing the difference in voltage value at parallel switch both ends. The device can realize the power supply of the uninterrupted transition device, the control power supply of the operation box, the power supply of the measurement and control device and a remote signaling signal direct current power supply loop, and avoids related risks.

Description

Uninterrupted DC power supply transition device

Technical Field

The utility model relates to an electric power regulation and control equipment technical field, it is specific, relate to a DC power supply transition device does not have a power failure.

Background

In the transformation project of the direct current system of the transformer substation, direct current transformation in a relay protection indoor relay protection device screen and a measurement and control screen usually needs to cut off a direct current power supply of the protection device and an operation box control direct current power supply, a direct current power supply of the measurement and control device and a remote signaling signal direct current power supply at intervals, and then direct current transformation work can be carried out.

In order to cooperate with the direct current transformation project, the power supply of the protection device and the control power supply need to be cut off on site, so related primary equipment needs to be stopped. Meanwhile, the power supply of a measurement and control device and the direct-current power supply of a remote signaling signal in the station are cut off, so that monitoring blind areas appear at both the plant end and the main station end, and the normal state of the equipment is monitored and controlled seriously. The above conditions are not favorable for the safe and stable operation of the transformer substation, and the working efficiency is low. A direct current transformation auxiliary device is urgently needed, and direct current transformation projects of a transformer substation protection and measurement and control screen can be completed under the condition of no power outage.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a purpose design a DC power supply transition device does not have a power failure, the device can realize transition device power, control box control power, measurement and control device power and remote signaling signal DC power supply return circuit do not have a power failure, have avoidd relevant risk.

For realizing above-mentioned technical purpose, the utility model provides a pair of technical scheme is, a DC power supply transition device does not have a power failure, including the main tank body, set up last terminal, lower terminal, pressure differential display device, first digital voltage display table, second digital voltage display table, side by side switch and external joint subassembly on the main tank body upper cover, it is connected with the external power supply electricity to go up the terminal, the lower terminal is connected with the external joint subassembly electricity, first digital voltage display table sets up the magnitude of voltage that is used for detecting DC input end in last terminal end, second digital voltage display table sets up the magnitude of voltage that is used for detecting DC output voltage in the lower terminal, pressure differential display device is used for showing the difference in voltage at side by side switch both ends.

In the scheme, the pressure difference display device is used for detecting the pressure difference at two ends of the parallel switch in real time, and when the pressure difference meets the specified pressure difference threshold value, the parallel switch acts to realize parallel operation; the external connector assembly is arranged, so that the access of various types of power lines can be realized, the power supply of the transition device, the control power supply of the operation box, the power supply of the measurement and control device and a remote signaling signal direct current power supply loop can be realized without power failure, and related risks are avoided; the construction efficiency of the direct current transformation project is improved and the working period is shortened in a mode of changing the line without power failure.

Preferably, the differential pressure display device comprises a voltage comparator, a first voltage test meter and a second voltage test meter, wherein the voltage comparator is electrically connected with the first voltage test meter and the second voltage test meter respectively, the first voltage test meter is used for measuring the voltage value of the first end of the parallel switch, and the second voltage test meter is used for measuring the voltage value of the second end of the parallel switch.

As preferred, the external connection head subassembly is including empty support, terminal row and air switch of opening, the side end face fixed connection of empty support and main box body, the terminal row is fixed to be set up on the empty support of opening, terminal row and air switch's positive negative conduct is preferred, still including the auxiliary box body that depends on main box body, the auxiliary box body is drawer structure or cabinet body structure for place repair tools, and auxiliary box body designs portable as toolbox with main box body an organic whole.

Preferably, the main box body and the auxiliary box body are made of aluminum alloy materials, so that the light-weight portable power box is light in weight and convenient to carry, and the safety of electric power personnel can be guaranteed due to the electricity-proof characteristic of the materials.

Preferably, the terminal strip is UK2.5B terminal strip.

Preferably, the null is a 2P null.

In the scheme, two kinds of terminal heads are respectively designed for a direct-current power supply 2P air switch or UK2.5B terminal strip; to UK2.5B terminal row, adopt 3mm 4mm to twist formula plug, match with the terminal row internal thread, can reliably connect terminal row. Aiming at the 2P air switch of the direct-current power supply, an improved air switch support is adopted, and the lower end of the air switch can be reliably connected.

The utility model has the advantages that: the utility model relates to a DC power supply transition device without power failure, which detects the pressure difference at two ends of a parallel switch in real time through a pressure difference display device, when the pressure difference meets the specified pressure difference threshold value, the parallel switch acts to realize the parallel operation; the external connector assembly is arranged, so that the access of various types of power lines can be realized, the power supply of the transition device, the control power supply of the operation box, the power supply of the measurement and control device and a remote signaling signal direct current power supply loop can be realized without power failure, and related risks are avoided; the construction efficiency of having improved direct current and having reformed transform the engineering through the mode of not having a power failure to change the line has shortened duty cycle, is provided with the auxiliary box body with the integrative design of main tank body simultaneously, and auxiliary box body is as the toolbox, portable.

Drawings

Fig. 1 is a structural diagram of a dc power supply transition device without power outage of the present invention.

Fig. 2 is a schematic diagram of a circuit connection junction of a dc power supply transition device without power outage according to the present invention.

The notation in the figure is: the device comprises a main box body 1, a parallel switch 2, a first voltage digital display meter 3, a differential pressure display device 4, a second voltage digital display meter 5, an auxiliary box body 6, an upper binding post 11, a lower binding post 12, a first voltage test meter 41, a second voltage test meter 42, a voltage comparator 43, an air switch 71, an air switch 72 and a terminal block 73.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is described in detail with reference to the accompanying drawings and examples, it should be understood that the specific embodiment described herein is only a preferred embodiment of the present invention, and is only used for explaining the present invention, and does not limit the protection scope of the present invention, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, a non-power-outage direct-current power supply transition device comprises a main box body 1, an upper binding post 11 arranged on an upper cover of the main box body, a lower binding post 12, a differential pressure display device 4, a first voltage digital display meter 3, a second voltage digital display meter 5, a parallel switch 2, an external connection head assembly and an auxiliary box body 6 attached to the main box body, wherein as shown in fig. 2, the differential pressure display device comprises a voltage comparator 43, a first voltage test meter 41 and a second voltage test meter 42, the voltage comparator is respectively and electrically connected with a first voltage test meter and a second voltage test meter point and is used for displaying differential pressure, the first voltage test meter is used for measuring a voltage value of a first end of the parallel switch, and the second voltage test meter is used for measuring a voltage value of a second end of the parallel switch; go up the terminal and be connected with external power supply electricity, the terminal is connected with the external joint subassembly electricity down, and first digital voltage display table sets up the voltage value that is used for detecting direct current input end in last terminal end, second digital voltage display table sets up the voltage value that is used for detecting direct current output voltage in the terminal down.

In the embodiment, the voltage comparator is used for detecting and displaying the pressure difference between two ends of the parallel switch in real time, and when the pressure difference meets the specified pressure difference threshold, the parallel switch acts to realize parallel operation; the external connector assembly is arranged, so that the access of various types of power lines can be realized, the power supply of the transition device, the control power supply of the operation box, the power supply of the measurement and control device and a remote signaling signal direct current power supply loop can be realized without power failure, and related risks are avoided; the construction efficiency of the direct current transformation project is improved and the working period is shortened in a non-power-off line changing mode; the auxiliary box body is of a drawer structure or a cabinet body structure and is used for placing repair tools, the auxiliary box body is designed integrally with the main box body as a tool box, the main box body and the auxiliary box body are made of aluminum alloy materials, and the auxiliary box body is light and convenient to carry and can ensure the safety of electric power personnel due to the electricity-proof characteristic of the materials.

The external joint assembly comprises an air-open bracket 71, a terminal strip 73 and an air switch 72, the air-open bracket is fixedly connected with the side end face of the main box body, the terminal strip is fixedly arranged on the air-open bracket, and the positive and negative ends of the terminal strip and the air switch are respectively correspondingly connected with the positive and negative ends of the lower wiring column;

in this embodiment, the terminal block is UK2.5B terminal block; the air switch is a 2P air switch; aiming at a direct-current power supply 2P air switch or UK2.5B terminal strip, two kinds of terminal pins are respectively designed; to UK2.5B terminal row, adopt 3mm 4mm to twist formula plug, match with the terminal row internal thread, can reliably connect terminal row. Aiming at the 2P air switch of the direct-current power supply, an improved air switch support is adopted, and the lower end of the air switch can be reliably connected.

The above-mentioned embodiment does the utility model relates to a preferred embodiment of the dc power supply transition device that does not have a power failure, not limit with this the utility model discloses a concrete implementation scope, the utility model discloses a scope includes and is not limited to this concrete embodiment, and the all equivalent changes that do according to the utility model discloses a shape, structure are all in the protection scope of the utility model.

Claims

1. The utility model provides a DC power supply transition device does not have a power failure, a serial communication port, including the main tank body, set up last terminal, lower terminal, pressure differential display device, first digital voltage display table, second digital voltage display table, parallel switch and external joint subassembly on the main tank body upper cover, it is connected with the external power supply electricity to go up the terminal, the terminal is connected with the external joint subassembly electricity down, first digital voltage display table sets up the voltage value that last terminal end is used for detecting DC input end, second digital voltage display table sets up the voltage value that the terminal is used for detecting DC output voltage down in the terminal, pressure differential display device is used for showing the voltage difference value at parallel switch both ends.

2. The uninterrupted power supply transition device of claim 1, wherein the voltage difference display device comprises a voltage comparator, a first voltage test meter and a second voltage test meter, the voltage comparator is electrically connected with the first voltage test meter and the second voltage test meter respectively, the first voltage test meter is used for measuring the voltage value of the first end of the parallel switch, and the second voltage test meter is used for measuring the voltage value of the second end of the parallel switch.

3. The uninterrupted DC power supply transition device according to claim 1, wherein the external connection assembly comprises an idle opening bracket, a terminal strip and an air switch, the idle opening bracket is fixedly connected with the side end face of the main box body, the terminal strip is fixedly arranged on the idle opening bracket, and the positive and negative ends of the terminal strip and the air switch are respectively connected with the positive and negative ends of the lower connecting post correspondingly.

4. The uninterrupted DC power supply transition device according to claim 1, 2 or 3, further comprising an auxiliary box attached to the main box, wherein the auxiliary box is in a drawer structure or a cabinet structure and used for placing repair tools.

5. The uninterruptible direct current power supply transition device of claim 3, wherein the terminal block is UK2.5B terminal block.

6. The uninterruptible direct current power supply transition device according to claim 3, wherein the idle switch is a 2P idle switch.