Backup optimization method for power system operation considering risk and wind power generation

Abstract

The invention discloses a power system operating reserve optimization method taking a risk and wind power generator into consideration. According to the method, the optimal configuration problem of a power system reserve capacity is taken into consideration by combining a probability and a result in the risk. A purpose of optimizing the integrated operating benefit of a power system containing wind power generation is taken as a target function, and a distribution scheme for the power system reserve is resolved through combination of a power balance equation taking wind power contribution into consideration, a generator output power constraint, a reserve climbing rate constraint, a load reserve demand quantity constraint taking wind power contribution fluctuation into consideration, a transmission line power constraint taking the wind power contribution fluctuation into consideration and a high power tie line N-1 fault constraint taking the risk into consideration. According to the method, the wind power generation contribution uncertainty and reserve support problem after a fault are taken into full consideration, the integrated risk of the power system is minimized, the optimal configuration of resources is realized well, and certain reference value for power grid planning and operation is achieved.

Description

technical field [0001] The invention relates to a power system operation backup optimization method, in particular to a power system operation backup optimization method considering risk and wind power generation. Background technique [0002] With the development of the power system in the direction of ultra-high voltage, long-distance, large-capacity and regional networking, and the application of a large number of new technologies and new equipment, the consequences of power outages are becoming more and more serious. Power grid operation backup, as one of the effective ways to deal with sudden accidents and prediction errors, is an important technical means to maintain the safe and stable operation of the power grid. Obviously, the higher the reserve capacity, the stronger the ability of the system to deal with emergencies, and the better the security and stability. But too high reserve will make the economy of the system decline. Therefore, how to scientifically and r...

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Problems solved by technology

[0004] In terms of research on the optimal allocation of reserve capacity in power systems, some scholars at home and abroad have studied the multi-objective coordination optimization problem of reserve risk considering uncertain factors, but most of them are based on the background of the power market, and there is no reserve capacity optimization considering the risk of the power grid. Configure evaluation indicators, and most of the research is based on the academic level, not combined with the actual operation of the domestic power grid

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