CN103683082A

CN103683082A - Prefabricated bin for high-voltage SF6 phase angle control switching breaker

Info

Publication number: CN103683082A
Application number: CN201310639158.9A
Authority: CN
Inventors: 郭建厂
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-11-25
Filing date: 2013-11-25
Publication date: 2014-03-26

Abstract

The invention relates to a prefabricated bin for a high-voltage SF6 phase angle control switching breaker. A box is divided into a plurality of compartments, namely an incoming line compartment, a PT (potential transformer) compartment, at least one capacitor compartment, at least one inductor compartment, a transformer compartment and a control chamber. The prefabricated bin is simple in structure, small in occupied area, capable of realizing workshop assembly, low in cost, and convenient to use, maintain and overhaul.

Description

The prefabricated storehouse of switching circuit breaker is controlled in high pressure SF6 phase angle position

Technical field

The present invention relates to the prefabricated storehouse of a kind of circuit breaker, be particularly suitable for the prefabricated storehouse that switching circuit breaker is controlled in high pressure SF6 phase angle position.

Background technology

On a large scale, superhigh pressure, ultra high voltage become China Power Grids main system from now on to national grid grid structure, and the problems thereupon bringing is corresponding increasing also, and wherein subject matter is that switched capacitor and reactor are larger to the impact of equipment.

Improve power quality; reduce plant maintenance; in the time of just need preventing power network breaker operator, produce overvoltage, shove, affect the stability of insulation, life-span and the electric power system of equipment, also can bring out the plant maintenances such as protective relaying maloperation and become the problem in power system operation.

Summary of the invention

In order to overcome the shortcoming of prior art, the invention provides a kind of high pressure SF6 phase angle position and control the prefabricated storehouse of switching circuit breaker, it is simple in structure, and floor space is little, shop assembled, cost is low.Working service maintenance is convenient.

The present invention solves the technical scheme that its technical problem takes: casing is divided into some intervals, is respectively inlet wire interval, PT interval, at least one capacitance interval, at least one inductance interval, institute's changing distance and control room.

The present invention has following advantages: (1), simple in structure, floor space is little, shop assembled, and cost is low.Working service maintenance is convenient; (2), reduce shoving and overcurrent of closing operation, protection electrical network and user, improve power grid quality, extends useful life and the time between overhauls(TBO) of electrical equipment, reduces the cost; (3), adopt phase control techniques, can be that the transient process in system shortens; (4), the phased of circuit breaker can improve its breaking capacity; (5), close inductive load, magnetizing inrush current and protective relaying maloperation while suppressing to close a floodgate; (6), close condensive load, overvoltage during shoving and cut-offfing while suppressing to close a floodgate, can prevent the arc of restriking.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the present invention is further described.

Fig. 1 is this schematic diagram;

Fig. 2 is inlet wire of the present invention interval enlarged drawing;

Fig. 3 is PT of the present invention interval enlarged drawing;

Fig. 4 is the basic principle of phase control of the present invention.

Embodiment

As shown in Figure 1, casing 1 is divided into some intervals, is respectively inlet wire interval 2, PT interval 3, at least one capacitance interval 4, at least one inductance interval 5, institute's changing distance 6 and control room 7.

As shown in Figure 2, described inlet wire interval 2 interior fixedly high voltage bus terminal 8, high voltage bus terminal 8 is electrically connected to the first inlet wire stationary seat 10 that insulation is fixed on casing 1 by the first cable 9, the moving seat 11 of the first inlet wire plugging together with the first inlet wire stationary seat 10 is fixed on the upper binding post of circuit breaker 14, on the lower binding post of circuit breaker 14, fix the moving seat 12 of the first outlet, with being fixed on casing 1 of moving 12 the first outlet stationary seat 13 insulation that plug together of the first outlet; The described moving seat 12 of the moving seat of the first inlet wire the 11, first outlet, circuit breaker 14 are fixed on the first dolly 15.The first described dolly 15 is also fixed the first baffle plate 16.

As shown in Figure 3, the described interior fixedly bus of capacitance interval 4 terminal terminal 17, bus terminal terminal 17 is electrically connected to the first outlet stationary seat 13, bus terminal terminal 17 is electrically connected to the second inlet wire stationary seat 19 being fixed on casing 1 by the second cable 18, fixing with second baffle 24 insulation with the moving seat 20 of the second inlet wire that the second inlet wire stationary seat 10 plugs together, and be electrically connected to the upper binding post of capacitor 22, the lower binding post of capacitor 22 is electrically connected to the second outlet stationary seat 21 that insulation is fixed on casing 1.

Described inductance interval 5 is identical with the structure of capacitance interval 4, and just the capacitor 22 in capacitance interval 4 changes inductor into.

Described control room 7 is SF6 phase angle level control device 25 fixedly, and SF6 phase angle level control device 25 is electrically connected to described circuit breaker 14, realizes phase angle position and controls.

The phase control of the phase control sulfur hexafluoride breaker operation utmost point, is for the breaker operator instruction in the input of arbitrary phase place place, is measuring breaker operator after the time, and the target phase of reference system voltage and current, to circuit breaker input operation signal.As the operation utmost point of target, phase place because of load character different different.

The operating time of phased sulfur hexafluoride breaker and pilot angle are because controlling voltage, operation conditions such as operating pressure, environment temperature kinetic characteristic and changing, so phase control device monitoring in real time is also adjusted and compensation in real time, guarantees the accuracy of phased operation, referring to table one.

The present invention can be by phase control device, according to the operational order of input, detect voltage or the current target phase place that will occur, calculate the operating time of circuit breaker, and the operational order of input to circuit breaker, thereby control accurately circuit breaker three-phase contact cut-offfing or closing at target phase place.As shown in Figure 4.

Claims

1. the prefabricated storehouse of switching circuit breaker is controlled in a high pressure SF6 phase angle position, it is characterized in that: casing (1) is divided into some intervals, is respectively inlet wire interval (2), PT interval (3), at least one capacitance interval (4), at least one inductance interval (5), institute's changing distance (6) and control room (7).

2. the prefabricated storehouse of switching circuit breaker is controlled in high pressure SF6 phase angle according to claim 1 position, it is characterized in that: the interior fixedly high voltage bus terminal (8) in described inlet wire interval (2), the first inlet wire stationary seat (10) that high voltage bus terminal (8) is fixed on casing (1) by the first cable (9) and insulation is electrically connected to, the moving seat of the first inlet wire (11) plugging together with the first inlet wire stationary seat (10) is fixed on the upper binding post of circuit breaker (14), on the lower binding post of circuit breaker (14), fix the moving seat of the first outlet (12), being fixed on casing (1) of the first outlet stationary seat (13) insulation plugging together with the moving seat of the first outlet (12), the described moving seat of the first inlet wire (11), the moving seat of the first outlet (12), circuit breaker (14) are fixed on the first dolly (15) above, and described the first dolly (15) is also fixed the first baffle plate (16).

3. the prefabricated storehouse of switching circuit breaker is controlled in high pressure SF6 phase angle according to claim 1 position, it is characterized in that: the interior fixedly bus terminal terminal (17) of described capacitance interval (4), bus terminal terminal (17) is electrically connected to the first outlet stationary seat (13), bus terminal terminal (17) is electrically connected to the second inlet wire stationary seat (19) being fixed on casing (1) by the second cable (18), fixing with second baffle (24) insulation with the moving seat of the second inlet wire (20) that the second inlet wire stationary seat (10) plugs together, and be electrically connected to the upper binding post of capacitor (22), the lower binding post of capacitor (22) is electrically connected to the second outlet stationary seat (21) that insulation is fixed on casing (1).

4. the prefabricated storehouse of switching circuit breaker is controlled in high pressure SF6 phase angle according to claim 1 position, it is characterized in that: described inductance interval (5) is identical with the structure of capacitance interval (4), just the capacitor (22) in capacitance interval (4) changes inductor into.

5. the prefabricated storehouse of switching circuit breaker is controlled in high pressure SF6 phase angle according to claim 1 position, it is characterized in that: described control room 7 is SF6 phase angle level control device (25) fixedly, SF6 phase angle level control device (25) is electrically connected to described circuit breaker (14), realizes phase angle position and controls.