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  • Name: MDVG digital reactive power generator
  • 编号: a003
  • Views : 1506

MDVG is a new type of dynamic reactive power compensation device developed by Chengdu Malone Electric Co., Ltd., which is based on the latest advanced power electronic technology development. DVG device connected in parallel with the power grid, the equivalent of a controllable reactive current source, the resulting reactive power compensation current can quickly follow the load reactive current changes and changes, automatically compensate for the reactive power required by the grid system, In addition to the existence of low-order system harmonics, reactive power on the grid, harmonics to achieve dynamic stepless compensation.

 

Field use

Chengdu, a commercial square for DVG complete sets of design, the project is located in Chengdu, a road, with a total construction area of 400,000 square meters, including Grade A boutique office, large shopping malls, theme blocks three parts.

 

Product number

Product Type M-DVG-380-100 / A on behalf of the McLong electrical DVG product rated voltage of 380V, rated capacity of 100kvar,

A:Single module products

B:20kVar module composed of the entire cabinet products

C:30kVar module composed of the entire cabinet products

D:50kVar module composed of the entire cabinet products

E:70kVar module composed of the entire cabinet products

 

Features

1、high reliability: products according to military standards, strict manufacturing, equipment more efficient and reliable;

2、the response is faster: DVG full response time of 10ms, can quickly output inductive or capacitive reactive power, the rapid impact of the impact load has a good compensation effect, and can inhibit the impact of voltage flicker.

3、a wider range of operation: dynamic two-way (-1 ~ 1) continuous adjustment of reactive power, that is, from the rated inductive conditions to the rated capacity of continuous output reactive power, can achieve any range of compensation.

4、 higher security: no overcompensation, no less, no resonance.

5、 better harmonic characteristics: DVG device itself does not produce additional harmonics, and can filter out the system generated 13 times and below harmonics.

6、strong anti-interference: cabinet structure, the surface of the electrostatic spray process, anti-electromagnetic interference ability.

7、handling and strong: the use of man-machine interface and remote communications (Ethernet, RS485; Modbus / total agreement), easy operation and management.

8、high availability: modular design, drawer structure, high power density, easy installation and maintenance.

 

Product Usage

Products have been widely run in the rail transit, data centers, hospitals, high-grade office buildings, hotels, sports venues, musical theaters, airports, chemicals, power generation and other industries.

 

Product parameters

 

Reactive power compensation (DVG) technical parameters

Control
features

Switching frequency

20KHZ

Performance

Rated voltage

380V×(1±20%)

Controller

DSP+FPGA

Rated compensation capacity (single module)

50kvar、70kvar

control algorithm

Instant Reactive + Sliding Window DFT

Electrical wiring

3L+N

Structure

Protection class

IP40

Grid frequency

50±2.5HZ

Colour

Light gray (customizable)

Power factor

-1~+1

Installation method

Indoor, floor type

Harmonic compensation effect

≥97%

cooling method

Forced air cooling

Response time

<10ms

surroundings

Ambient temperature

-30℃~+60℃

Compensation effect

Power factor> 0.98 (three-phase balanced full load)

Relative humidity

≤90% No condensation

Operation mode

Single or multiple parallel operation

noise

≤70dB

Line approach

Up line

Altitude

≤1500m,1500 ~ 4000m, according to the international GB / T3859.2 for each additional 100m, power reduction of 1%

Protection mode

With a slow start control loop to avoid limiting the starting current is too large, the input overvoltage, overcurrent, overheating, DC bus overvoltage, overload automatic current limiting protection