January 19, 2024
Key technologies and measures for energy saving and consumption reduction of transformers
Because of the distribution transformer and its power supply and distribution system, the proportion of single-phase electricity load is relatively heavy, and with the wide use of various energy-saving electrical equipment and energy-saving lamps, the three-phase load imbalance of distribution transformer is large, resulting in large losses, which shows that the load loss caused by the three-phase imbalance is very large.
Through reasonable phase load optimization and adjustment to reduce the three-phase load imbalance, the three-phase load of the distribution transformer is almost close to the balance relationship, so that a better phase balance relationship can be obtained, reduce the active and reactive power consumption in the operation of the distribution transformer, improve the conversion efficiency of power distribution and dispatch.
From the operating conditions of the distribution transformer and the load curve between the distribution transformer and the load, it can be seen that the reactive load of the distribution transformer is mainly concentrated in the light load or no-load operation condition, at this time, the excitation reactive power will be generated, and the reactive power capacity consumed is about 10 ~ 15 percent of the rated capacity of the distribution transformer. Therefore, centralized reactive power compensation measures can be taken. By reasonably selecting SVC, SVG, TSC and other reactive power compensation devices, the collateral reactive power compensation capacitors are connected to the bus side of the distribution transformer through the load switch. When the system is running under light load or no load conditions, the reasonable switching of capacitors is used to carry out real-time reactive power compensation, so as to improve the power factor of the 10kV distribution system. Reasonably reduce the operation loss of distribution transformer, and achieve the energy saving and economic effect of improving the low voltage quality of the part.
In the distribution network, reasonable energy-saving measures such as optimal selection of energy-saving distribution transformers, joint economic dispatch and operation of multiple distribution transformers, optimization and adjustment of three-phase load, and appropriate reactive power compensation can reduce the operation loss of distribution transformer legal person, so as to achieve the purpose of energy saving and consumption reduction and economic regulation and operation.
