Novel group searching method for optimal scheduling of cascade reservoir groups

Abstract

The invention discloses a novel group searching method for optimal scheduling of cascade reservoir groups, and relates to the field of power generation scheduling of a hydropower system. An elite set dynamic updating strategy is combined with a neighborhood variation search mechanism, global search and local exploration are considered in a balanced manner in the method, and both the diversity of population and the convergence speed of the method are taken into consideration. The water level of a hydropower station serves as a state variable, an optimization target is to maximize the comprehensive generating capacity of the cascaded reservoir groups in a scheduling period, a certain amount of spider individuals are initialized, internal corporation of the sub-spider groups, marriage of heterosexual individuals, dynamic update of elite individuals and a neighborhood variation search strategy are implemented generation by generation, and an optimal scheduling strategy of the cascade reservoir groups is approached gradually. Dynamic update of the elite individuals can ensure that introduced elite spider population evolutes effectively, and the searching capability and the exploration capability of the method are balanced; the excellent individual neighborhood variation strategy can maintain the population diversity, and the calculation speed and the convergence speed of the method are improved; and the method has high population value and good application prospects.

Description

technical field [0001] The invention relates to the field of hydropower system power generation scheduling, in particular to a novel group search method for optimal scheduling of cascade reservoir groups. technical background [0002] With the steady and orderly advancement of hydropower development, China has gradually formed a new pattern of giant cascade reservoirs. The coordinated and unified dispatch of cascade reservoirs is conducive to the rational and efficient utilization of water energy resources and the safe and stable operation of the power system, and can produce significant economic, social and ecological benefits, making the optimal dispatch of cascade reservoirs an important aspect of current and future hydropower energy systems. Important theoretical and practical topics. However, complex hydraulic and electric power connections coexist among cascade reservoirs, and various complex time and space constraints such as water level, outflow, and output need to ...

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Problems solved by technology

However, when applying this method to solve the optimal dispatching problem of cascade reservoir groups, there are still problems such as premature convergence.

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