Abstract: A method for programming the energy storage device in power-gas coupling system based on reliability constraints is provided. The method includes: obtain the parameters and operation condition of each equipment of the power-gas coupling system in a year; determine the different operating states of the system. A programming model of the energy storage device based on reliability constraints is constructed based on the operating state of the system, and benders decomposition algorithm is adopted to calculate the programming model, so that the programming scheme of the energy storage device is obtained. Considering not only the economy but also the reliability of the system, which is more accurate, comprehensive and effective than the previous programming method; the present invention is of great significance to improve the reliability of the electric power system and ensure the safe and reliable operation of the electric power system.

Abstract: The present invention discloses a method for programming the energy storage device in power-gas coupling system based on reliability constraints, obtain the parameters and operation condition of each equipment of the power-gas coupling system in a year; determine the different operating states of the system; A programming model of the energy storage device based on reliability constraints is constructed based on the operating state of the system, and benders decomposition algorithm is adopted to calculate the programming model, so that the programming scheme of the energy storage device is obtained. Considering not only the economy but also the reliability of the system, which is more accurate, comprehensive and effective than the previous programming method; the present invention is of great significance to improve the reliability of the electric power system and ensure the safe and reliable operation of the electric power system.

Abstract: Non-fault disturbance-based method and system for measuring short-circuit capacity of a power grid on site including: connecting or disconnecting a reactive compensation device to or from a power grid point of common coupling, to generate a disturbance on a power grid; obtaining total active power and total reactive power of a load of the point of common coupling before the disturbance; determining a vector difference between a voltage of the power grid point of common coupling before the disturbance and a voltage of the power grid point of common coupling after the disturbance; obtaining a voltage effective value of the power grid point of common coupling before the disturbance; obtaining a capacity of the reactive compensation device; and determining a short-circuit capacity of the point of common coupling according to total active power, total reactive power, vector difference between voltages, voltage effective value, and capacity of the reactive compensation device.

Abstract: Non-fault disturbance-based method and system for measuring short-circuit capacity of a power grid on site including: connecting or disconnecting a reactive compensation device to or from a power grid point of common coupling, to generate a disturbance on a power grid; obtaining total active power and total reactive power of a load of the point of common coupling before the disturbance; determining a vector difference between a voltage of the power grid point of common coupling before the disturbance and a voltage of the power grid point of common coupling after the disturbance; obtaining a voltage effective value of the power grid point of common coupling before the disturbance; obtaining a capacity of the reactive compensation device; and determining a short-circuit capacity of the point of common coupling according to total active power, total reactive power, vector difference between voltages, voltage effective value, and capacity of the reactive compensation device.