Research On The Technology Of Contactless On-load Automatic Capacity Regulating

Rural power grid load fluctuations, thus causing the transformer overload and sometimes even at full load, light load or no-load sometimes. Transformer losses is composed of iron and copper losses in two parts, in theory, when the iron and copper losses are the same, transformers run as the highest efficiency, losses are minimized. If the same transformer capacity and load changes, will inevitably lead to iron loss and copper loss ratio is different, so the loss of the transformer is changed, therefore, for reduce the loss of the transformer when the load changes must exceed a certain range, change capacity of the transformer, the transformer capacity should be based on the size of the load varies. The Change transformer capacity by adjusting capacity to trigger the switch-off to complete, after adjusting capacity switch trigger action, changing distribution transformer connection between the high-pressure side and the low side windings, thereby changing the number of turns on distribution transformers relationship, achieve the purpose of adjusting capacity.In order to reduce this particular transformer losses caused economic losses of purpose. In this paper, the D/Y conversion type distribution transformer capacity adjustment applied to the non-contact automatic load tap changer as the research object, the transfer capacity of the tap changer by two anti-parallel thyristor structure, Intelligent Controller collected in real time based on the detection part load data, control transfer capacity tap is turned on and off, high-pressure side D, Y conversion and low side serial to parallel conversion, automatically adjusted to achieve load capacity, the transformer capacity in line with the client load size, reducing the transformer no-load losses.This article from the existing transfer capacity of distribution transformer technology used in the tap, analysis which produces a lot of unrest in the transfer capacity of the process, such as complex structure, adjust the speed is slow, and so on. By thyristor zero trigger and trigger phase shift analysis comparing designs based anti-parallel thyristor trigger mode optical fiber distribution transformer load non-contact automatic tuning capacitor tap the primary trigger circuit for optical receiver power problems can be designed to self-created DC power supply circuit. In many effective measures to deal with high and low side electrical isolation problem, the fiber trigger its large capacity, security and stability has been widely used, it is automatically adjusted to improve the load capacity of technical security and stability of the key.Combined with the non-contact paper load capacity of auto technology research, select the appropriate power electronics to build a non-contact load capacity of auto technology simulation model simulation software Matlab/Simulink, the swap trigger switch capacity of the switching process simulated simulation research. According to the oscilloscope waveform obtained can be seen, it will have a greater impact on current tuning capacitor switching operation, since the zero trigger thyristor having the characteristics of any delay trigger time can overheat reasonable solution thyristor surge current caused due to burning. Theoretical analysis and simulation results show that the non-contact load distribution transformer capacity of auto technology research can solve the burden of seasonal changes in day and night to give the "big horse cart" problem, tuning capacitor switch trigger mode optical fiber. It proposes to further improve the tone volume process safety and reliability, and adjust volume process more stable. The use of auto-load tolerance technology can reduce load loss, achieve the effect of energy loss, but also reduce the investment staff, more cost-effective.