CN101299375A

CN101299375A - High leakage reactance type level adjustable series iron-core reactor

Info

Publication number: CN101299375A
Application number: CNA2008100107003A
Authority: CN
Inventors: 陈柏超; 闫春利; 蔡虹; 孟庆华; 巩志强
Original assignee: DANDONG XINTAI ELECTRIC Co Ltd
Current assignee: DANDONG XINTAI ELECTRIC Co Ltd
Priority date: 2008-03-19
Filing date: 2008-03-19
Publication date: 2008-11-05
Anticipated expiration: 2028-03-19
Also published as: CN101299375B

Abstract

A high leakage reactance type step speed adjustable series connection iron core reactor is composed of an upper yoke core, a bottom yoke, a bypass core, a main core, a main winding coil, a control winding coil, an air gap section. The structure of the novel reactor is different from the general reactor, since the bypass core arranged in the general main core is sleeved with the control winding coil, the capacity of the reactor is changed by controlling the on and off of the control winding coil to adjust the capacity of the reactor, and the change of the connection mode of the winding can be performed with power failure, thereby reducing the economic loss caused by the power failure to change the capacity of the reactor.

Description

The high leakage reactance type level adjustable series iron-core reactor

Technical field

The present invention relates to carry out in the electrical network electric equipment of reactive power compensation, relate to a kind of Regulatable reactor specifically.

Background technology

But power system reactive power compensation extensively adopts switching shunt capacitance group as dynamic reactive compensation device, because capacity of capacitor bank is in changed in stages, so require the corresponding change of reactance value of supporting with it series reactor, to guarantee the requirement of 6% series reactance value or other reactance values.

Present widely used accent circle reactor is made up of band air gap iron core, band tap main coil.The main coil number of turn and gas length unshakable in one's determination decision reactor rated capacity value.By change reactor tap change reactor capacity (reactance value), and the tap of conversion reactor must be carried out operation under power-off condition, influence power equipment and normally move.

Do not have as yet at present under power-off condition not, change the reactor of series reactor capacity.

Summary of the invention

At the defective that present accent circle series reactor unshakable in one's determination exists, the present invention proposes a kind of under power-off condition not, changes the Regulatable reactor of series reactor capacity.

Realize that the concrete technical measures that the foregoing invention purpose is taked are:

A kind of high leakage reactance type level adjustable series iron-core reactor is made up of the upper and lower yoke heart, bypass iron core, main core, main winding, control winding coil, air gap section.On the main core of the upper and lower yoke heart, be set with main winding, on the stem stem of main core, respectively be provided with control air gap and common air gap, in main core, be provided with the bypass iron core, on the bypass iron core, be set with the control winding coil, two control winding coils up and down on each stem stem are connected in series respectively, constitute control loop.

The invention has the beneficial effects as follows: this novel reactor structure is different from conventional reactor, owing to be set with the control winding coil on the bypass iron core that in common main core, is provided with, thereby change the reactor capacity and only need control the unlatching closure of winding and just can adjust the reactor capacity, the change of control winding connection mode can not carried out operation under the power-off condition, therefore can reduce the economic loss that causes because of the change reactor capacity that has a power failure.

Description of drawings

Fig. 1 is a structural representation of the present invention

Fig. 2 is the vertical view of Fig. 1

Fig. 3 is a winding diagram of the present invention

Among the figure: control 11 times control of air gap air gap, 12 common air gaps on 1 on the yoke heart 2 lower yoke hearts 3 on 4 times main cores of main core, 5 main windings 6 on bypass 7 times bypass iron cores 8 unshakable in one's determination on 9 times control of the control winding coil winding coil 10

Embodiment

High leakage reactance type level adjustable series iron-core reactor structure as depicted in figs. 1 and 2, reactor is made up of the upper and lower yoke heart, bypass iron core, main core, main winding, control winding coil, air gap section.On the following main core 4 of the main core 3 on the last yoke heart 1 and the lower yoke heart 2, be set with main winding 5, the main winding mode of connection is identical with conventional reactor, connection principle as shown in Figure 3, be provided with control air gap 10 in the bottom of last main core 3, control air gap 11 under the top of main core 4 is provided with down, last, under control and be provided with common air gap 12 between the air gap, at last main core 3, following main core 4 both sides are provided with bypass unshakable in one's determination 6 and following bypass iron core 7, on last bypass iron core 6, be set with control winding coil 8, be set with control winding coil 9 down on the bypass iron core 7 down, the control winding coil number of turn is identical with the main winding number of turn, and control winding coil rated current is 1/3 of a main winding rated current; Two control winding coils up and down on each stem stem are connected in series respectively, constitute control loop.

High leakage reactance type level adjustable series iron-core reactor operation principle:

When last control winding coil 8, when controlling winding coil 9 and all open a way down, magnetic flux unshakable in one's determination passes through through upper and lower bypass iron core 6,7, and without upper and lower

control air gap

10,11, magnetic resistance is all born by common air gap 12, reactor capacity minimum, reactance value maximum;

When last control winding coil 8 is closed, last control winding coil 8 flows through electric current, produce the opposing magnetic flux opposite with main flux, be not flow through magnetic flux in the upper and lower bypass iron core 6,7, main flux is by last control air gap 10, the reactor magnetic resistance is born by last control air gap 10, common air gap 12, and the reactor capacity increases;

When upper and lower control winding coil 8,9 is all closed, upper and lower control winding coil 8,9 flows through electric current, produce the opposing magnetic flux opposite with main flux, be not flow through magnetic flux in the bypass iron core, main flux is by last control air gap 10 and control air gap 11 down, and the reactor magnetic resistance is by last control air gap 10, and following control air gap 11, common air gap 12 are born, reactor capacity maximum reaches rated value.Therefore as long as control control winding coil is opened with closed the i.e. change of may command reactor capacity.

Claims

1 one kinds of high leakage reactance type level adjustable series iron-core reactors are made up of the upper and lower yoke heart, bypass iron core, main core, main winding, control winding coil, air gap section; On the main core of upper and lower yoke, be set with main winding, on the stem stem of main core, respectively be provided with control air gap and common air gap, in main core, be provided with the bypass iron core, on the bypass iron core, be set with the control winding coil, two control winding coils up and down on each stem stem are connected in series respectively, constitute control loop.