A multi-source reactive power optimization control method for power system

Abstract

The invention discloses a multi-source reactive power optimization control method for a power system. The multi-source reactive power optimization control method main comprises day-ahead optimization scheduling and intraday optimization correction, wherein the day-ahead optimization scheduling comprises the following steps: building a day-ahead optimization scheduling model according to parameters of the power system, obtaining day-ahead reactive power scheduling plans of a shunt capacitor bank and transformer taps in a power grid by the model, and providing the day-ahead reactive power scheduling plans of the shunt capacitor bank and the transformer taps in the power grid for the intraday optimization correction; the intraday optimization correction is updating scheduling information of the shunt capacitor bank and the transformer taps in the power grid by the day-ahead reactive power scheduling plans in real time; a real-time optimization scheduling scheme of an electric vehicle charging pile for intraday normal operation is obtained through the built optimization module for intraday normal operation or a reactive voltage optimization control scheme for the shunt capacitor bank in intraday fault operation is obtained according to the optimization module for intraday fault operation; and finally the optimization regulation and control of an intraday reactive power source are achieved.

Description

technical field [0001] The invention relates to a multi-source reactive power optimization control method of an electric power system. Background technique [0002] In recent years, wind power, as a clean and pollution-free renewable energy, has developed rapidly around the world. By the end of 2014, the world's installed wind power capacity had reached 360GW, and China, the United States, Germany, Spain and India accounted for 72% of the world's total installed capacity. However, the characteristics of randomness and weak controllability of wind power have had a profound impact on the voltage stability of weak links in the power system. At the same time, a large number of asynchronous wind turbines need to absorb reactive power when generating electricity. If the grid cannot provide sufficient reactive power, it will cause the terminal voltage of the wind turbine to drop, and in serious cases, there is even a risk of disconnecting from the grid. [1] . [0003] With its a...

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Problems solved by technology

However, there has not been a lot of research on the reactive power generated by electric vehicle charging piles participating in the optimal operation of the system.

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