Optimization based on a DC line loss the method for controlling a secondary piconet

The present invention belongs to the distribution network technology and the intersection of power electronics technology, particularly to a DC-based line loss optimization piconet secondary regulator control method. DC microgrid first constructed, the control center calculates the upper DC microgrid power loss according to the sampling line information of each transducer; then calculated for each controllable voltage source droop control intercept common mode and differential mode adjustment amount; droop control parameter adjusted by DC output voltage of each piconet controllable power supply for controlling the power output of each, thereby adjusting the flow of each branch of the distribution, to reduce line losses. The present invention does not rely on high-sensitivity sensor for measuring the line impedance and large quantities of the operation information, optimization of implementation loss microgrid DC line. The results showed that: compared with the conventional method for controlling the DC current piconet, the control method can reduce line losses, particularly to reduce the amplitude distribution of the load impedance and the line of sight path is determined.