Power Quality Problem
Public utilities is indispensable to urban production and operation, residents' daily life, is the basis of urban survival and development and basic conditions, with the development and perfection of public utilities, improve the efficiency of urban labor, create a beautiful environment and good conditions for residents at the same time, also greatly increased the power consumption, caused a certain power quality problems. Such as waterworks and various commonly used pumps in sewage treatment, a variety of gas discharge light sources used in night scene lighting, waste incineration for power generation incinerator will produce a large number of harmonics in the process of use, causing harm to the power system. The power quality problem must be dealt with. Public welfare power grid harmonics mainly 3,5,7,11,13 times harmonics, can use Active harmonic filter and Static var generator for power quality management.
Hazards and influence
YT Power Quality Solutions
A waste incineration power plant in Jiaxing, China was established in 2004, with products including waste disposal, power generation and heating. In the process of production and power generation, the equipment produced a large number of reactive power and 5 times, 7 times of harmonics, resulting in the decline of power quality, the urgent need for governance.
In view of site reactive and harmonic problems, a 150A active filter and 200kvar hybrid reactive power compensation device are equipped under each transformer on site, with harmonic control through APF active filter, and SVG + capacitor reactance for reactive power control.
Governance effect by YT
The field harmonic current distortion rate is 16.4%, mainly for 5 and 7 harmonics, and the power factor is about 0.85. After treatment, the current distortion rate(THDi) is reduced to 1.9%, the power factor(PF) rises to 1.00, the compensation effect is good, completely solve the reactive power and harmonic problems in the field.
Some Project Examples
Projects(Some examples) | Products | Model |
Weihai Huateng photovoltaic power station reactive power compensation cabinet | Static Var Generator(SVG) |
YTPQC-SVG
|
Shanghai Zhabei Power Plant power distribution transformation project | Static Var Generator(SVG) | YTPQC-SVG |
State Grid Tianjin Electric Power Company urban renovation project | Outdoor three-phase imbalance device | YTPQC-SPC |
State Grid Shanghai Electric Power Company switch station power distribution transformation project | Hybrid reactive power compensation cabinet | YTPQC-SVG |
Longquan Mountain household waste incineration for power generation |
YTPQC-APF
|
Product pictures
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