product series:
unt-atsc - intelligent filter compensator (apf tsc)
unt-asvg - intelligent filter compensator (apf svg)
unt-stsc - intelligent dynamic reactive power compensator (svg tsc)
the unt-atsc/asvg/stsc products combine the active and passive modules with intelligent controller modules to achieve continuous compensation without dead ends.
compared with traditional dynamic compensation
| functional characteristics | traditional dynamic reactive compensation | atsc/ asvg / stsc | svg |
| control method | independent controller, control group switching | intelligent control, system, stable and fast | intelligent control, fastest, most stable |
| output reactive | grouped output, with dead zone | linear output, stable and smooth, no dead zone | full linear output, no dead zone |
| compensation effect | around 0.95 | 0.99 or so, part of the sensitivity to full capacity | 0.99 or more, full sensitivity to full capacity, maximum compensation range |
| full response time | more than 100ms | less than 10ms | less than 5ms |
| filtering ability | specific subharmonic | stsc filters out specific harmonics atsc /asvg filters 2~50 filters | specific filtering |
| three-phase imbalance | generally, special design is required | the effect is obvious, it can output 100% full power, solve the three-phase imbalance problem | 100% full power output of the whole machine to solve the three-phase imbalance problem |
| market price | price confusion | moderately priced | expensive |
| compensation capacity graph | see picture 1 | see picture 2 | -------------- |
features:
more - the most profitable and most functional;
fast - fast response and fast maintenance;
good - linear compensation effect, good appearance, good display interface;
province - save money and worry.
· the most profitable: intelligent working mode, improve the life of the whole machine and reduce labor costs.
· the most functions: can compensate for capacitive and reactive power, can also compensate for inductive reactive power, filter system harmonics, solve three-phase imbalance problem, eliminate voltage fluctuation caused by reactive power, and detect power quality of the system online.
· fast response: the power factor is compensated to about 0.99 within 10ms;
· fast maintenance: full module design, free combination, free disassembly and assembly, plug-and-drop design, to minimize equipment downtime.
· after compensation, the power factor can reach 0.99 or more in real time, no switching and oscillating, no compensation for the dead zone;
·intelligent control system, hybrid compensation mode, guarantees that there will be no under-compensation and no compensation from the source;
· modules are easy to expand, reducing waste of upfront investment;
· 7-inch touch screen, fully user-friendly design, can monitor the working status of each tsc, allowing users to always grasp the status of the device.
· eliminate the capacitor compensation controller;
· powerful phase compensation capability, completely solve the customer's three-phase imbalance problem, minimize system line loss, and bring direct economic benefits to customers;
·intelligent control system, hybrid compensation mode, reduce the switching time and frequency of capacitors, and extend the service life of equipment.
typical product case:
there are many inverters in the distribution room of a city's fifth chemical factory co., ltd., and the harmonics of the distribution system are large. the original filter device compensation and filtering effects are not obvious, resulting in a low safety and reliable operation coefficient of the distribution system in the plant. the stability of the electrical system is low, which poses a huge hidden danger to the production stability.
since the frequency converter is a nonlinear device, a large amount of harmonics are injected into the power distribution system during operation, and the system has a large reactive power shortage. in order to solve the above problems----harmonic control and reactive power compensation our company combined with the actual measured data and on-site low-voltage distribution load situation, made the following treatment plan: active filter static var generator used for compensation, the effect after treatment is obvious, the power factor reaches ≥0.98 after equipment operation.
the voltage current before compensation is as follows:
the voltage and current after compensation are as follows:
