CN205489540U - Compensation module is controlled mutually to sine - Google Patents

Abstract

Compensation module is controlled mutually to sine belongs to reactive compensation technical field, especially relates to a compensation module is controlled mutually to sine. The utility model provides a can realize the compensation module is controlled mutually to sine of undercurrent switching. The utility model discloses a condenser, the condenser includes A looks building -out capacitor, B looks building -out capacitor, C looks building -out capacitor, the A line terminal that meets, B line terminal and the C line terminal that meets that meets, its structural feature A looks building -out capacitor one end through A looks switch respectively with the A line terminal that meets, C looks building -out capacitor one end links to each other, the C looks building -out capacitor other end through C looks switch respectively with the C line terminal that meets, B looks building -out capacitor one end links to each other, the B looks building -out capacitor other end through B looks switch respectively with the B line terminal that meets, the A looks building -out capacitor other end links to each other.

Description

Sinusoidal phased compensating module

Technical field

This utility model belongs to reactive power compensation technology field, particularly relates to a kind of sinusoidal phased compensating module.

Background technology

Reactive-load compensation equipment is by self the phase calculation to sampling current voltage, and eliminate in electrical network is the most idle, thus improves power supply quality, improves the efficiency of generating and electrical equipment, reduces transmission line loss, improve grid supply quality, reach energy-conservation purpose.

In existing compensation equipment, fling-cut switch, IGCT, IGCT is had to add magnetic latching relay combination, owing to electric capacity is oepration at full load fling-cut equipment, and electric current also has the factor increased in the case of having harmonic wave, can produce the electric current of several times when switching, autocompensation installation is in frequent switching state when devoting oneself to work, and the most easily causes burning out of switch, simultaneously due also to impact of shoving reduces the service life of capacitor, have a strong impact on compensation and the safety of electrical network.

In the last few years, in order to improve the problems such as fault rate is high of shoving caused by the switching electrical equipment of alternating-current switch, some manufacturing firms begin with the IGCT switching for switched capacitor, although thyristor switch has effect of no-voltage switching, but turn on thyristors internal resistance is big, producing substantial amounts of heat during operation, loss increases, need to install radiator, blower fan.More seriously non-linear element is belonged to due to IGCT, operationally produce higher hamonic wave, its operation waveform is not sinusoidal wave, but ladder type ripple, square tooth ripple, it is in operation and runs beyond three tunnels, so that it may hear there is abnormal hum, actual is exactly that ladder type involves harmonic wave generation, this kind of phenomenon severe contamination electrical network, the most then damage IGCT, heavy then damage miscellaneous equipment.Also having a kind of combination switch, outside line needs some other supporting electronic components, and the resistance to breakdown capability of electronic component reactance voltage of these auxiliary is poor, affects the safe operation of electrical network.

Summary of the invention

This utility model is aiming at the problems referred to above, it is provided that a kind of phased compensating module of sine realizing small area analysis switching.

For achieving the above object, this utility model adopts the following technical scheme that, this utility model includes capacitor, capacitor includes that A phase compensates electric capacity, B phase compensates electric capacity, C phase compensates electric capacity, A connects line end, B connects line end and C connects line end, its structural feature A phase compensates electric capacity one end and switchs, by A phase, the line end that connects with A respectively, C phase compensates electric capacity one end and is connected, C phase compensates the electric capacity other end and switchs, by C phase, the line end that connects with C respectively, B phase compensates electric capacity one end and is connected, B phase compensates the electric capacity other end and switchs, by B phase, the line end that connects with B respectively, A phase compensates the electric capacity other end and is connected.

As a kind of preferred version, A phase described in the utility model switchs the line end that connected respectively by A phase filter inductance with A, C phase compensates electric capacity one end and is connected, B phase switchs the line end that connected respectively by B phase filter inductance with B, A phase compensates the electric capacity other end and is connected, and C phase switchs the line end that connected respectively by C phase filter inductance with C, B phase compensates electric capacity one end and is connected.

As another kind of preferred version, the control signal input port that control signal input port that control signal input port that A phase described in the utility model switchs, B phase switch, C phase switch is connected with the control signal output port of controller respectively.

As another kind of preferred version, controller described in the utility model uses WKD-12D type controller.

As another kind of preferred version, the A described in the utility model line end that connects is electrically connected with A phase by A phase air switch, and the B line end that connects is electrically connected with B phase by B phase air switch, and the C line end that connects passes through C phase air switch and is electrically connected with C phase.

As another kind of preferred version, A phase described in the utility model switchs, B phase switchs, C phase switchs employing relay.

As another kind of preferred version, relay described in the utility model uses 12V relay.

Secondly, capacitor described in the utility model uses BSMJ type capacitor.

It addition, relay described in the utility model includes skeleton, armature and movable contact spring, skeleton being provided with the limiting plate for limiting armature position, the quantity of limiting plate is two and is positioned at the both sides of armature.

This utility model beneficial effect.

Fling-cut switch is connected by this utility model with capacitor internal contact, can realize standard sine wave and compensate.

This utility model A phase compensates electric capacity one end by A phase switchs the line end that connects respectively with A, C phase compensates electric capacity one end and is connected, C phase compensates the electric capacity other end by C phase switchs the line end that connects respectively with C, B phase compensates electric capacity one end and is connected, and B phase compensates the electric capacity other end and passes through that B phase switchs the line end that connects with B respectively, A phase compensates the electric capacity other end and is connected；Can realize small area analysis switching, the temperature rise of element itself is low, and service life is long, low cost, reduces the impact to electrical network；Safe switching, purifies electrical network.

The rated current of original fling-cut switch can be reduced by 1.732 times by this utility model.

Accompanying drawing explanation

With detailed description of the invention, this utility model is described further below in conjunction with the accompanying drawings.This utility model protection domain is not only limited to the statement of herein below.

Fig. 1 is this utility model circuit theory diagrams.

Fig. 2 is that this utility model connects block diagram.

Fig. 3 is this utility model relay construction schematic diagram.

In Fig. 3,1 be skeleton, 2 be armature, 3 be movable contact spring, 4 for limiting plate.

Detailed description of the invention

As shown in the figure, this utility model includes capacitor, capacitor includes that A phase compensates electric capacity, B phase compensates electric capacity, C phase compensates electric capacity, A connects line end, B connects line end and C connects line end, A phase compensates electric capacity one end by A phase switchs the line end that connects respectively with A, C phase compensates electric capacity one end and is connected, C phase compensates the electric capacity other end by C phase switchs the line end that connects respectively with C, B phase compensates electric capacity one end and is connected, and B phase compensates the electric capacity other end and passes through that B phase switchs the line end that connects with B respectively, A phase compensates the electric capacity other end and is connected.

Described A phase switchs the line end that connected respectively by A phase filter inductance with A, C phase compensates electric capacity one end and is connected, B phase switchs the line end that connected respectively by B phase filter inductance with B, A phase compensates the electric capacity other end and is connected, and C phase switchs the line end that connected respectively by C phase filter inductance with C, B phase compensates electric capacity one end and is connected.Every filter inductance that is respectively connected to mutually suppresses harmonic wave, and switching is safer, waveform more standard.

The control signal input port that control signal input port that control signal input port that described A phase switchs, B phase switch, C phase switch is connected with the control signal output port of controller respectively.

Described controller uses WKD-12D type controller.WKD-12D type controller possesses display, communication and harmonic wave defencive function.

The described A line end that connects is electrically connected with A phase by A phase air switch, and the B line end that connects is electrically connected with B phase by B phase air switch, and the C line end that connects passes through C phase air switch and is electrically connected with C phase.Air switch is set and improves the safety of transmission of electricity further.

Described A phase switchs, B phase switchs, C phase switchs employing relay.

Described relay uses 12V relay.

Described capacitor uses BSMJ type capacitor.BSMJ(NL) type capacitor reliability is high.

Described relay includes skeleton, armature and movable contact spring, and skeleton is provided with the limiting plate for limiting armature position, and the quantity of limiting plate is two and is positioned at the both sides of armature.Skeleton is provided with the limiting plate for limiting armature offset distance, limiting plate has no effect on the normal work of armature, but when armature occurs skew, limiting plate can limit the deviation range of armature, prevent movable contact spring from expendable deformation occurring, thus improve reliability and the life-span of relay.

This utility model may be provided in unit outer cover protective cover, and unit outer cover protective cover can use fire-retardant material, and left and right sides arranges vent passages, dispels the heat, reliable.Outer casing upper cover end can arrange run indicator.

It is understandable that, above with respect to specific descriptions of the present utility model, it is merely to illustrate this utility model and is not limited to the technical scheme described by this utility model embodiment, it will be understood by those within the art that, still this utility model can be modified or equivalent, to reach identical technique effect；Needs are used, all within protection domain of the present utility model as long as meeting.

Claims (9)

1. The most sinusoidal phased compensating module, including capacitor, capacitor includes that A phase compensates electric capacity, B phase compensates electric capacity, C phase compensates electric capacity, A connects line end, B connects line end and C connects line end, it is characterized in that A phase compensates electric capacity one end by A phase switchs the line end that connects respectively with A, C phase compensates electric capacity one end and is connected, C phase compensates the electric capacity other end by C phase switchs the line end that connects respectively with C, B phase compensates electric capacity one end and is connected, and B phase compensates the electric capacity other end and passes through that B phase switchs the line end that connects with B respectively, A phase compensates the electric capacity other end and is connected.
2. The most sinusoidal phased compensating module, it is characterized in that described A phase to switch by A phase filter inductance connecting with A respectively that line end, C phase compensate electric capacity one end and be connected, B phase switchs the line end that connected respectively by B phase filter inductance with B, A phase compensates the electric capacity other end and is connected, and C phase switchs the line end that connected respectively by C phase filter inductance with C, B phase compensates electric capacity one end and is connected.
3. The most sinusoidal phased compensating module, it is characterised in that the control signal input port that control signal input port that control signal input port that described A phase switchs, B phase switch, C phase switch is connected with the control signal output port of controller respectively.
4. The most sinusoidal phased compensating module, it is characterised in that described controller uses WKD-12D type controller.
5. The most sinusoidal phased compensating module, it is characterised in that the described A line end that connects is electrically connected with A phase by A phase air switch, the B line end that connects is electrically connected with B phase by B phase air switch, and the C line end that connects passes through C phase air switch and is electrically connected with C phase.
6. The most sinusoidal phased compensating module, it is characterised in that described A phase switchs, B phase switchs, C phase switchs employing relay.
7. The most sinusoidal phased compensating module, it is characterised in that described relay uses 12V relay.
8. The most sinusoidal phased compensating module, it is characterised in that described capacitor uses BSMJ type capacitor.
9. The most sinusoidal phased compensating module, it is characterised in that described relay includes skeleton, armature and movable contact spring, skeleton is provided with the limiting plate for limiting armature position, and the quantity of limiting plate is two and is positioned at the both sides of armature.