CN203339709U

CN203339709U - Compound SVC (static var compensator) regulation device with low-voltage stepless regulation-type var compensation filtering function

Info

Publication number: CN203339709U
Application number: CN201320410681XU
Authority: CN
Inventors: 张新红
Original assignee: XINXIANG STRONG POWER ELECTRIC Co Ltd
Current assignee: XINXIANG STRONG POWER ELECTRIC Co Ltd
Priority date: 2013-07-11
Filing date: 2013-07-11
Publication date: 2013-12-11
Anticipated expiration: 2023-07-11

Abstract

The utility model relates to a compound SVC (static var compensator) regulation device with a low-voltage stepless regulation-type var compensation filtering function, which is used for effectively solving the problem of dynamic var compensation at a low-voltage side. The compound SVC regulation device structurally comprises a shell and a capacitor branch in the shell, wherein the capacitor branch comprises a resistor, a capacitor, a discharge coil and a reactor; one end of the resistor is connected with one end of the capacitor; the other end of the capacitor is connected with the reactor and one end of the discharge coil; the other end of the resistor is connected with a grounded lightning arrester and the other end of the discharge coil, a first switch and a controller respectively, and connected with a current transformer and a voltage transformer via the first switch; the voltage transformer and the current transformer are connected with the controller; the controller is connected with a manually-adjustable reactor via a second switch; and a bus connecting post is arranged on the shell; a switch is connected with a bus via the bus connecting post. A plurality of the capacitor branches connected to the bus in parallel can be arranged as needed, and with the adoption of capacitor compound combined switching, capacitors with different capacities can be switched, thus expanding the compensation capacity range and the application field of an SVC var compensation control device.

Description

The stepless regulated type reactive power compensation of composite low pressure filter function SVC regulation device

Technical field

The utility model relates to electrical equipment, particularly the stepless regulated type reactive power compensation of a kind of composite low pressure filter function SVC regulation device.

Background technology

Electrical network is main path and the equipment that electric power is carried, but has a large amount of inductive loads due to life, in producing, so cause the excessive and electrical network severe contamination of reactive loss.Power grid quality descends, and can cause many serious accidents, has had a strong impact on life, production.Apply now maximum SVC reactive compensation controlling devices and be mainly used in high pressure compensation, and this field of low-voltage compensation does not relate to.And only considered that on the switching of electric capacity one group of static state drops into, property building-out capacitor once, rather than make corresponding variation according to the size of reactive power on electrical network, can not solve the low-pressure side reactive-load dynamic compensation, range of application is narrow, hindered its advantage performance, therefore, to its innovation and transform imperative.

Summary of the invention

For above-mentioned situation, for overcoming the defect of prior art, the purpose of the utility model just is to provide the stepless regulated type reactive power compensation of a kind of composite low pressure filter function SVC regulation device, can effectively solve the problem of low-pressure side reactive-load dynamic compensation.

The technical scheme that the utility model solves is, comprise the capacitive branch in housing and housing thereof, capacitive branch comprises resistance, electric capacity, discharge coil and reactor, resistance one end is connected with electric capacity one end, the other end of electric capacity and reactor, discharge coil one end is connected, the other end of resistance respectively with the lightning arrester (claiming again surge absorber) of ground connection, the discharge coil other end, the first switch is connected with controller, and connect current transformer through the first switch, voltage transformer, the voltage transformer summation current transformer connects controller, controller is through the moving Regulatable reactor of second switch catcher, the bus binding post is arranged on housing, the first switch, second switch connects bus through the bus post.

The utility model can arrange a plurality of capacitive branch (providing 4 capacitive branch in figure) that are parallel to bus as required, the utility model adopts electric capacity combined type combination switching, can drop into the different capacitor of capacity, the compensation capacity scope of SVC reactive compensation controlling device and application are enlarged, effectively solve the low-pressure side reactive-load dynamic compensation, range of application is wide, and purposes is wide.

The accompanying drawing explanation

Fig. 1 is the utility model circuit theory diagrams.

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.

As shown in Figure 1, the utility model comprises the capacitive branch in housing and housing thereof, capacitive branch comprises resistance R, capacitor C, discharge coil L and reactor, resistance R one end is connected with capacitor C one end, the other end of capacitor C and reactor 5, discharge coil L mono-end is connected, the other end of resistance R respectively with the lightning arrester (claiming again surge absorber) 6 of ground connection, the discharge coil L other end, the first switch 7 is connected with controller 3, and connect current transformer 2 through the first switch 7, voltage transformer 4, the voltage transformer summation current transformer connects controller 3, controller 3 is through the moving Regulatable reactor 8 of second switch 9 catcher, the bus binding post is arranged on housing, the first switch, second switch connects bus 1 through the bus post.

In order to guarantee result of use, described housing is square, and guidance panel is equipped with in the front portion of housing, and controller is contained in the housing at guidance panel rear portion; Described the first switch 7, second switch 9 are electromagnetic switch; Described capacitive branch have 4 branch roads respectively through switch in parallel on the bus post; Described busbar voltage is 380V-1000V, during use, in the AC network that to be parallel to rated voltage be 380V-1000V, the switching Shunt Capacitor Unit is for the coarse adjustment power factor, MCR carries out meticulous adjusting fast and accurately, for power factor, adjustment voltage, improvement harmonic wave, the reduction network loss of improving electrical network, improve the utilance of electrical network, guaranteed that the safety and economic operation of electrical network and promotion electrical network are energy-conservation.

The utility model can be realized electric capacity combined type combination switching, maximum can drop into the different capacitor of four pool-sizes, gather the real time data of low-pressure side voltage and current, adopt instantaneous reactive power theory, calculate reactive power and the active power of electrical network at 1/4 ondomete, and then calculate fast the reactive power of the required compensation of institute's electrical network, then the capacity from controller rapid adjustment electric capacity according to the capacity of reactor, and then can obtain one and be applicable to very much the fast-changing reactive power scope of reactor.More accurately foundation has more rapidly been played in the adjustment of the reactive power that user side is produced.

Compared with prior art, switching is swift in motion the utility model, and effect is remarkable, has filled up the shortcoming of low pressure static reacance dynamic compensation, is specially adapted to the fast-changing occasion of low-voltage load reactive power.Be that innovate greatly in one in the reactive power compensation field, economic and social benefit is huge.

Claims

1. the stepless regulated type reactive power compensation of a composite low pressure filter function SVC regulation device, comprise the capacitive branch in housing and housing thereof, it is characterized in that, capacitive branch comprises resistance (R), electric capacity (C), discharge coil (L) and reactor, resistance (R) end is connected with electric capacity (C) end, the other end of electric capacity (C) and reactor (5), discharge coil (L) end is connected, the other end of resistance (R) respectively with the lightning arrester (6) of ground connection, discharge coil (L) other end, the first switch (7) is connected with controller (3), and connect current transformer (2) through the first switch (7), voltage transformer (4), the voltage transformer summation current transformer connects controller (3), controller (3) is through the moving Regulatable reactor (8) of second switch (9) catcher, the bus binding post is arranged on housing, the first switch, second switch connects bus (1) through the bus post.

2. the stepless regulated type reactive power compensation of composite low pressure according to claim 1 filter function SVC regulation device, is characterized in that, described housing is square, and guidance panel is equipped with in the front portion of housing, and controller is contained in the housing at guidance panel rear portion.

3. the stepless regulated type reactive power compensation of composite low pressure according to claim 1 filter function SVC regulation device, is characterized in that, described the first switch (7), second switch (9) are electromagnetic switch.

4. the stepless regulated type reactive power compensation of composite low pressure according to claim 1 filter function SVC regulation device, is characterized in that, described capacitive branch have 4 branch roads respectively through switch in parallel on the bus post.