From the operating conditions of the distribution transformer and the load curve between the load and the load, it can be known that the reactive load of the distribution transformer is mainly concentrated in the light load or no-load operating conditions, and the reactive power is generated at this time, and the reactive capacity consumed is It is about 10% to 15% of the rated capacity of the distribution transformer. Therefore, centralized reactive power compensation measures can be taken. By reasonably selecting reactive power compensation devices such as SVC, SVG, TSC, etc., the mortgage reactive compensation capacitor is connected to the bus side of the distribution transformer through the load switch, and the system operates at light load or no load. In working condition, the capacitor can be cut reasonably to perform reactive power compensation in real time, improve the power factor of the 10kV power distribution system, effectively reduce the running loss of the distribution transformer, and at the same time achieve the energy-saving economic effect of improving the end voltage and improving the voltage quality.
In summary, in the distribution network, reasonable adoption of energy-efficient distribution transformers, multiple distribution transformers combined with economic dispatch operation, optimization and adjustment of three-phase loads, and appropriate reactive power compensation can reduce the operation of distribution transformers. Loss, to achieve the purpose of energy-saving and economical operation.