CN206878470U

CN206878470U - A kind of reactive-load compensation line construction

Info

Publication number: CN206878470U
Application number: CN201720687251.0U
Authority: CN
Inventors: 甘戈
Original assignee: Liaoning Mastery Of World Development Ltd By Share Ltd
Current assignee: Liaoning Mastery Of World Development Ltd By Share Ltd
Priority date: 2017-06-14
Filing date: 2017-06-14
Publication date: 2018-01-12
Anticipated expiration: 2027-06-14

Abstract

The utility model discloses a kind of reactive-load compensation line construction, sets detection circuit and the capacitive compensator controlled by fling-cut switch, the output end of the fling-cut switch and central controller to electrically connect between every two-phase of three-phase output end；The signal output part of the detection circuit and the input of central controller electrically connect；Detect the output end output current value signal and voltage value signal of circuit, data signal is converted into by A/D convertor circuit to export to central controller, central controller judges whether supply line phase shortage and controls capacitive compensator by fling-cut switch according to the signal of input.The utility model has the advantages that：Employ the judgement structure of central controller controls and perform structure, it is corresponding rapid, and accuracy rate is higher.

Description

A kind of reactive-load compensation line construction

Technical field

Power supply technique field is the utility model is related to, specifically a kind of reactive-load compensation line construction.

Background technology

Because power distribution network is in the end of power network, user is mostly low-voltage customer, and the power factor of many electrical appliances is very low, and Without compensation device, this brings very big power burden and extra line loss to power network, in order to safeguard power system stability, ensure electricity Energy quality and safe operation, it is necessary that local reactive power compensation is carried out to power network end transformer.Idle compensating control to Adjustment, the voltage of balance substation network, there is provided power factor (PF), reduce loss, improve power supply quality.

Excision of the existing idle compensating control for three phase mains can not fast reaction, certain delay be present, Therefore need to be further improved this circuit.

The content of the invention

In order to solve the above technical problems, the purpose of this utility model is to provide a kind of reactive-load compensation line construction, in three-phase Detection circuit and the capacitive compensator controlled by fling-cut switch, the fling-cut switch and center are set between every two-phase of output end The output end of controller electrically connects；The signal output part of the detection circuit and the input of central controller electrically connect；It is described Detection circuit includes transformer, and the input of transformer is connected with after resistance R1 and resistance R2 series connection with the two of feeder ear, electricity Hold C1 with being connected between the two phases after resistance R7 parallel connections；The output end of transformer by resistance R5 and resistance R6 connection output ends, The output end is connected electric capacity with ground connection interpolar；The resistance R3 and resistance R4 of parallel connection are connected between the output end of transformer；Detection line The output end output current value signal and voltage value signal on road, data signal is converted into by A/D convertor circuit and exported to center control Device processed, central controller according to the signal of input judge supply line whether phase shortage and by fling-cut switch to capacitive compensator control System.

Also include mu balanced circuit, the mu balanced circuit input is connected with power supply circuit, circuit output end of pressure-stabilizing and center Controller connects.

The utility model has the advantages that：Employ the judgement structure of central controller controls and perform structure, it is corresponding rapid, And accuracy rate is higher.

Brief description of the drawings

Fig. 1 is wiring construction schematic diagram of the present utility model；

Fig. 2 is detection circuit circuit diagram；

Fig. 3 is control principle schematic diagram.

Embodiment

The utility model is illustrated below in conjunction with the accompanying drawings, as illustrated, the utility model is every the two of three-phase output end Detection circuit 2 and the capacitive compensator 3 that is controlled by fling-cut switch 4 be set between phase, and in Fig. 1, the termination per phase is labeled as portion Part 1, the output end of the fling-cut switch 4 and central controller electrically connect；The signal output part of the detection circuit 3 is controlled with center The input of device processed electrically connects；The detection circuit includes transformer, and the input of transformer is connected with resistance R1 and resistance R2 It is connected afterwards with the two of feeder ear, electric capacity C1 after resistance R7 parallel connections with being connected between the two phases；The output end of transformer passes through electricity R5 and resistance R6 connection output ends are hindered, the output end is connected electric capacity with ground connection interpolar；Connected between the output end of transformer in parallel Resistance R3 and resistance R4；The output end output current value signal and voltage value signal of circuit are detected, is turned by A/D convertor circuit Change data signal into export to central controller, central controller judges whether supply line phase shortage and leads to according to the signal of input Fling-cut switch is crossed to control capacitive compensator.

Part of the present utility model can use commercial products.As central controller can use ADI companies of the U.S. to produce ADE7880 chips.

Claims

A kind of 1. reactive-load compensation line construction, it is characterised in that：Between every two-phase of three-phase output end set detection circuit and The capacitive compensator controlled by fling-cut switch, the output end of the fling-cut switch and central controller electrically connect；The detection line The signal output part on road and the input of central controller electrically connect；The detection circuit includes transformer, the input of transformer End is connected after being connected with resistance R1 and resistance R2 with the two of feeder ear, be connected to after electric capacity C1 is in parallel with resistance R7 two-phase it Between；The output end of transformer is connected electric capacity by resistance R5 and resistance R6 connection output ends, the output end with ground connection interpolar；Become The resistance R3 and resistance R4 of parallel connection are connected between the output end of depressor；Detect the output end output current value signal and magnitude of voltage of circuit Signal, it is converted into data signal by A/D convertor circuit and exports to central controller, central controller to be sentenced according to the signal of input Cut-off electric line whether phase shortage and by fling-cut switch to capacitive compensator control.
2. reactive-load compensation line construction according to claim 1, it is characterised in that：Also include mu balanced circuit, the voltage stabilizing Circuit input end is connected with power supply circuit, and circuit output end of pressure-stabilizing is connected with central controller.