METHOD FOR DETERMINING FACT, LOCATION, AND MAGNITUDE OF UNACCOUNTED CONSUMPTION OF ELECTRICAL POWER IN DISTRIBUTION NETWORK Russian patent published in 2022 - IPC G01R19/00 G01R21/06 G01R22/06 

FIELD: measuring.

SUBSTANCE: invention relates to the field of measuring electrical values and can be used to determine the fact, determine the magnitude and location of commercial losses of electrical power in a distribution network. The electrical values of active power, current and voltage at the power source and at the points of connection of consumers are synchronously measured, recorded, and transmitted to a data collection and processing apparatus. The fact of unaccounted consumption of electric power in the network is determined by calculating the voltage at the beginning of the line relative to the voltage at the end of the line, and if the module thereof does not match the actual value of voltage of the power source, the fact of unaccounted consumption of electric power is determined. To determine the value of unaccounted consumption of electric current, all consumer currents are brought to a single power supply voltage by the phase shift angle. The location of unaccounted consumption of electrical power is determined based on calculating the voltages at the ends of network sections and comparing said voltages with the actual voltage at the end of the section obtained from the meter readings. If the module of calculated voltage value does not match the module of actual voltage at the end of the section obtained from the meter readings, a conclusion is made of an unaccounted consumption in the current section. The distance from the beginning of the section to the point of a leak is determined by the formula:

wherein is the maximum possible calculated value of voltage at the end of the section; is the unaccounted current passing in part of the resistance of the section, brought to the voltage at the beginning of the section by the phase shift angle; is the specific resistance of the section; is the distance from the beginning of the section to the point of the leak.

EFFECT: possibility of accurately determining the location of unaccounted electrical power consumption.

1 cl, 1 dwg