CN215934530U

CN215934530U - Power supply system opens and closes ring operating means

Info

Publication number: CN215934530U
Application number: CN202121951757.0U
Authority: CN
Inventors: 方玉珍; 朱巧莉; 谷潇
Original assignee: Nanjing Iron and Steel Co Ltd
Current assignee: Nanjing Iron and Steel Co Ltd
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2022-03-01
Anticipated expiration: 2031-08-19

Abstract

The utility model discloses a power supply system loop opening and closing operation device which comprises a box body, circuit breaker control switches, a display device and a measurement and control device, wherein the circuit breaker control switches, the display device and the measurement and control device are arranged on the box body, the circuit diagram of the power supply system loop opening and closing part is printed on the upper surface of the box body, each circuit breaker control switch is arranged at a corresponding position, the display device is arranged on the upper surface of the box body, and the measurement and control device, the display device and the circuit breaker control switches in the box body are connected through conducting wires. The operating platform can visually observe currents of the three circuit breakers, so that the loop opening and closing operation is safe and reliable, the judgment is accurate, and misoperation is prevented.

Description

Power supply system opens and closes ring operating means

Technical Field

The utility model relates to power supply system control, in particular to a power supply system loop opening and closing operation device.

Background

The power supply system of the transformer substation monitors background opening and closing loop operation, the opening and closing processes of all circuit breakers are generally operated in respective operation interfaces of a monitoring background, generally, an operation interface of a 1# main transformer, an operation interface of a 2# main transformer and an operation interface of a bus coupler are operated, the bus coupler opening and closing loop operation needs to firstly observe the normal operation of the operation interfaces of the 1# main transformer and the 2# main transformer respectively, switch the operation interfaces into a 3DL bus coupler, close a 3DL bus coupler circuit breaker, observe the loop closing current of the 3DL bus coupler circuit breaker at the moment, then switch to the main operation interface, observe the currents of a 1DL low-voltage side incoming line and a 3DL bus coupler circuit breaker, then enter a 2# main transformer operation interface to operate a 2# main transformer power failure task, pull off a 2DL incoming line circuit breaker and a high-voltage side circuit breaker on a 2# main transformer low-voltage side, and then switching to a main operation interface, observing that the currents of the 1# main transformer and the bus coupler circuit breaker are normal, switching the load of the 2# main transformer to the 1# main transformer, supplying power to the first section and the second section of 10kV by the 1# main transformer through the 3DL bus coupler, and completing the 3DL bus coupler loop-opening operation at the 10kV side. The main operation interface and each part operation interface need to be switched back and forth in the whole operation process, the operation process is not visual and inconvenient, and the power utilization safety is affected by easy misoperation.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims to provide an open-close loop operating device which does not need to switch an operation interface for multiple times and avoids the influence of misoperation on production electricity.

The technical scheme is as follows: the utility model provides a power supply system opens and shuts operating means, operating means includes the box body, install circuit breaker control switch on the box body, display device and set up the measurement and control device in the box body, the upper surface of box body is printed on the partial circuit diagram of power supply system's ring that opens and shuts, each circuit breaker control switch installs in corresponding position department, the last surface mounting of box body has display device, measurement and control device, display device and circuit breaker control switch pass through the wire and connect in the box body.

Further, the breaker control switch includes a 1DL breaker control switch, a 2DL breaker control switch, and a 3DL breaker control switch.

Further, the 1DL breaker control switch, the 2DL breaker control switch and the 3DL breaker control switch are all touch switches.

Furthermore, the display device is a liquid crystal display and is used for displaying the real-time current of each branch circuit.

Furthermore, the measurement and control device is an integrated circuit board, and a wireless signal receiving module and a wireless signal transmitting module are installed on the integrated circuit board, receive signals of the electric power equipment and remotely control the electric power equipment.

Has the advantages that: compared with the prior art, the utility model has the following advantages: 1. the low-voltage side and the low-voltage bus coupler of the two main transformers are arranged in the same interface, the current display of the three circuit breakers can be visually observed through the display device, the operation is simple, the judgment is accurate, and the trouble of switching the operation interface back and forth is eliminated. 2. The utility model has safe and reliable operation of loop opening and closing, does not influence production and power consumption, and improves the stability of a power supply system.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a power supply system monitoring background host interface;

FIG. 3 is a 1# main transformer operation interface;

FIG. 4 is a 2# main transformer operation interface;

FIG. 5 is an operation interface of the bus coupling portion.

Detailed Description

The technical scheme of the utility model is further explained by combining the attached drawings.

The utility model is used for a transformer substation, the transformer substation is provided with two power transformers with 110kV voltage level, the two-transformer two-section split operation mode is adopted, the low voltage is provided with 10kV first section, 10kV second section and low voltage bus coupler, the 2# transformer needs to be powered off, the load is not powered off, and the operation steps are as follows.

(1) Observing that the 1# transformer and the 2# transformer normally operate and each feeder cabinet normally operates in the monitoring background main interface shown in FIG. 2;

(2) by using the display device 2 disclosed by the utility model, the current of two incoming line breakers of a 1# transformer 1DL low-voltage side 1101 and a 2# transformer 2DL low-voltage side 1201 is observed;

(3) the 3DL circuit breaker control switch 5 is used for closing the 3DL bus coupler 1120 and observing the 3DL closed loop current;

(4) the 2DL breaker control switch 4 of the utility model is used for pulling open the 2# transformer 2DL low-voltage side 1201 incoming line breaker;

(5) pulling the 2# transformer high-voltage side 201 incoming line breaker open, switching the 'distant/local' change-over switch to the local position, and enabling the distant not to be operated;

(6) operating a 2# transformer 2DL low-voltage side 1201 incoming line breaker to a test position;

(7) opening a high-voltage side 2012 knife switch of the 2# transformer;

(8) opening a high-voltage side 2011 disconnecting link of the 2# transformer;

(9) observing that the 1# transformer with the 10kV first-stage and second-stage loads normally operates, namely completing the 10kV side 3DL bus coupling and disconnecting loop operation;

(10) and hanging a closing prohibition signboard to serve as a grounding wire to complete the power failure task of the 2# transformer.

The general operation of the de-loop operation requires a plurality of operation interfaces, such as the operation interface of the main transformer 1# shown in fig. 3, the operation interface of the main transformer 2# shown in fig. 4, and the operation interface of the bus coupler shown in fig. 5, the bus coupler de-loop operation requires that the main interface of the power supply system monitoring background is observed that the main transformer 1# and the main transformer 2# operate normally, the operation interface is switched to the operation interface of the bus coupler, the 3DL bus coupler circuit breaker is closed, the loop closing current is observed when the 3DL bus coupler circuit breaker is at this time, then the operation interface is switched to the main interface, the current is observed in both the main circuit breaker 1DL and the 2DL low-voltage side incoming line and the 3DL bus coupler circuit breaker, then the operation interface of the main transformer 2# is entered to operate the power failure task of the main transformer 2#, the circuit breaker on the low-voltage side 2DL incoming line and the circuit breaker of the main transformer 2# is pulled out, then the operation interface is switched to the main interface, the current is observed that the main transformer 1# and the bus coupler circuit breaker are normal, the load of the 2# main transformer is switched to the 1# main transformer, the 1# main transformer supplies power to the first section and the second section of the 10kV through the 3DL bus coupler, and the 3DL bus coupler on the 10kV side is completed.

Compared with the steps, the utility model simplifies the operation of the loop opening and closing, saves the trouble of switching the operation interface back and forth, is safe and reliable, does not influence the production and power utilization, and improves the stability of a power supply system.

Claims

1. An open-loop operation device of a power supply system is characterized in that: including box body (1), install circuit breaker control switch, display device (2) on the box body and set up the measurement and control device in the box body, the upper surface of box body is printed with power supply system and separates the partial circuit diagram of ring, and each circuit breaker control switch is installed in corresponding position department, and display device (2) are installed at the box body upper surface, and measurement and control device, display device (2) and circuit breaker control switch pass through the wire and connect.

2. An opening-closing ring operating device according to claim 1, wherein: the breaker control switch comprises a 1DL breaker control switch (3), a 2DL breaker control switch (4) and a 3DL breaker control switch (5).

3. An opening-closing ring operating device according to claim 2, wherein: the 1DL circuit breaker control switch (3), the 2DL circuit breaker control switch (4) and the 3DL circuit breaker control switch (5) are all touch switches.

4. An opening-closing ring operating device according to claim 1, wherein: the display device (2) is a liquid crystal display.

5. An opening-closing ring operating device according to claim 1, wherein: the measurement and control device is an integrated circuit board, and a wireless signal receiving module and a wireless signal transmitting module are installed on the integrated circuit board.