CN201584807U

CN201584807U - Single-busbar multi-segment wiring centralized spare power automatic switching system

Info

Publication number: CN201584807U
Application number: CN2009202847341U
Authority: CN
Inventors: 刘连永; 陈锋; 吴旭; 史尧
Original assignee: DANYANG POWER SUPPLY Co OF JIANGSU ELECTRIC POWER Co
Current assignee: DANYANG POWER SUPPLY Co OF JIANGSU ELECTRIC POWER Co; State Grid Corp of China SGCC; State Grid Jiangsu Electric Power Co Ltd
Priority date: 2009-12-07
Filing date: 2009-12-07
Publication date: 2010-09-15
Anticipated expiration: 2019-12-07

Abstract

The utility model belongs to the technical field of power transmission and distribution, and relates to a single-busbar multi-segment wiring centralized spare power automatic switching system, comprising a plurality of main transformers, wherein each main transformer is respectively connected with two sections of buses through two main breakers; all sections of buses are sequentially connected to form a ring-shaped wire; the voltage detection signal of each section of bus is connected to the same centralized spare power automatic switching device; and the emergency power supply automatic switching of all the buses are controlled by the centralized spare power automatic switching device. The utility model has convenient installation and debugging and low equipment cost. In system capacity increasing, the mode of increasing the plug-in connector can be used to correspond to the number increasing of the buses after capacity increasing, thus improving the device expansibility and reducing the amount of work of installation and debugging; and the centralized spare power automatic switching device can be conveniently arranged at the bus measurement and control screen, thus effectively reducing the cable using amount and simplifying the installation and debugging process.

Description

The prepared auto restart system is concentrated in many segmentations of single busbar connection wiring

Technical field

The utility model belongs to the power transmission and distribution technical field, relates to a kind of many segmentations of single busbar connection wiring and concentrates the prepared auto restart system.

Background technology

In traditional prepared auto restart system, a section breaker that connects between two main circuit breakers that per two sections mothers go up to connect and the two sections buses need be provided with a backup auto-activating device to carry out stand-by power supply to the power supply of two sections buses and drops into automatically.Its basic running is: under the normal condition, two main circuit breakers close a floodgate, a section breaker separating brake, and two sections buses are independently-powered separately; When one section bus breaks down, backup auto-activating device detects this section bus loss of pressure, then instructs main circuit breaker tripping operation on this section bus, and section breaker closes a floodgate simultaneously, utilizes the two sections bussed supplies of main circuit breaker on another section bus.When using multiple transformers to carry out many segments in a circular shape of single busbar connection wiring power supply, just need per two sections buses to use an independent segmented backup auto-activating device, disperse to be installed in block switch cashier's office in a shop, its stube cable of this system configuration and Installation and Debugging are all more loaded down with trivial details, and cost is also than higher.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of Installation and Debugging convenience, equipment cost many segmentations of single busbar connection wiring low, that be easy to concentrated monitoring to concentrate the prepared auto restart system.

Spare power automatic switching system of the present utility model includes many main transformers, and every main transformer connects respectively two sections buses by two main circuit breakers, and each section bus connects and composes ring connection successively; The voltage detection signal of each section bus all is connected in the same concentrated backup auto-activating device, is automatically dropped into by the stand-by power supply of concentrating backup auto-activating device to all buses and controls.

The utility model Installation and Debugging are convenient, equipment cost is low.Can come by the mode that increases plug-in unit the increase of bus quantity after the corresponding increase-volume during system increase-volume, thereby improve the autgmentability of device, reduce the workload of installation and debugging; Concentrated backup auto-activating device can be installed on the bus observing and controlling screen easily, has effectively reduced the cable use amount and has simplified the installation and debugging process.

Description of drawings

Fig. 1 is the system principle schematic diagram of the utility model embodiment.

Embodiment

Embodiment as shown in the figure comprises the ring connection electric power system of three main transformers, low-pressure side six segmentations, comprise 1# main transformer, 2# main transformer, these three main transformers of 3# main transformer in the system, also comprise female these the six sections buses of mother I～VI and these nine circuit breakers of 1DL～9DL, the voltage detection signal of each section bus all is connected in the concentrated backup auto-activating device, is dropped into automatically by the stand-by power supply of concentrating backup auto-activating device to all buses and controls.Its control comprises following several situation:

1: three main transformer of situation moves simultaneously, i.e. 1DL, 2DL co-bit, and 3DL divides the position, 4DL, 5DL co-bit, 6DL divides the position, 7DL, 8DL co-bit, 9DL divides.

If 1.1 the 1# transformer tripping, the female simultaneously decompression of the female VI of I, prepared auto restart is tripping 1DL and 8DL simultaneously, and judgement 1DL and 8DL close 3DL and 9DL after dividing the position simultaneously.

If 1.2 the 2# transformer tripping, the female simultaneously decompression of the female III of II, prepared auto restart is tripping 2DL and 4DL simultaneously, and judgement 2DL and 4DL close 3DL and 6DL after dividing the position simultaneously.

If 1.3 the 3# transformer tripping, the female simultaneously decompression of the female V of IV, prepared auto restart is tripping 5DL and 7DL simultaneously, and judgement 5DL and 7DL close 6DL and 9DL after dividing the position simultaneously.

Situation 2:1# main transformer and 2# main transformer move simultaneously, and the 3# main transformer is in stand-by state, and promptly 1DL, 2DL close the position, and 3DL divides the position, and 4DL, 6DL close the position, and 5DL divides the position, and 8DL, 9DL close the position, and 7DL divides the position.

If 2.1 the 1# transformer tripping, the female simultaneously decompression of the female VI of I mother V, prepared auto restart is tripping 1DL and 8DL simultaneously, and after judgement 1DL and 8DL divided the position, 3DL and 7DL simultaneously closed.

If 2.2 the 2# transformer tripping, the female simultaneously decompression of the female IV of II mother III, prepared auto restart is tripping 2DL and 4DL simultaneously, and after judgement 2DL and 4DL divided the position, 3DL and 5DL simultaneously closed.

Situation 3:1# main transformer and 3# main transformer move simultaneously, and the 2# main transformer is in stand-by state, and promptly 1DL, 3DL close the position, and 2DL divides the position, and 5DL, 6DL close the position, and 4DL divides the position, and 7DL, 8DL close the position, and 9DL divides the position.

If 3.1 the 1# transformer tripping, the female simultaneously decompression of the female VI of I mother II, prepared auto restart is tripping 1DL and 8DL simultaneously, and after judgement 1DL and 8DL divided the position, 2DL and 9DL simultaneously closed.

If 3.2 the 3# transformer tripping, the female simultaneously decompression of the female V of III mother IV, prepared auto restart is tripping 5DL and 7DL simultaneously, and after judgement 5DL and 7DL divided the position, 4DL and 9DL simultaneously closed.

Situation 4:2# main transformer and 3# main transformer move simultaneously, and the 1# main transformer is in stand-by state, and promptly 2DL, 3DL close the position, and 1DL divides the position, and 4DL, 5DL close the position, and 6DL divides the position, and 7DL, 9DL close the position, and 8DL divides the position.

If 4.1 the 2# transformer tripping, the female simultaneously decompression of the female III of I mother II, prepared auto restart is tripping 2DL and 4DL simultaneously, and after judgement 2DL and 4DL divided the position, 1DL and 6DL simultaneously closed.

If 4.2 the 3# transformer tripping, the female simultaneously decompression of the female VI of IV mother V, prepared auto restart is tripping 5DL and 7DL simultaneously, and after judgement 5DL and 7DL divided the position, 6DL and 8DL simultaneously closed.

Claims

1. the prepared auto restart system is concentrated in many segmentations of single busbar connection wiring, include many main transformers, every main transformer connects two sections buses respectively by two main circuit breakers, each section bus connects and composes ring connection successively, it is characterized in that: the voltage detection signal of each section bus all is connected in the same concentrated backup auto-activating device, is dropped into automatically by the stand-by power supply of concentrating backup auto-activating device to all buses and controls.