Active scheduling method for intermittent energy power generation

Abstract

The invention discloses an active scheduling method for intermittent energy power generation, comprising the following steps: setting three cycling power dispatching links, namely a day-ahead power generation plan, an intraday power generation plan and a real-time power generation plan; during the day-ahead plan stage, constructing a next-day day-ahead power generation plan model to obtain a next-day day-ahead power generation plan; during the intraday plan stage, constructing an intraday power generation plan model by taking deviation with the dayahead power generation plan to be minimum as a target on the basis of the on-off state and capacity of the intraday scheduling period of a unit provided by the day-ahead power generation plan to obtain an intraday power generation plan; and during the real-time plan stage, constructing a real-time power generation plan by taking deviation with the dayahead power generation plan to be minimum as a target on the basis of the on-off state and capacity of the intraday scheduling period of a unit provided by the dayahead power generation plan to obtain a real-time power generation plan. According to the active scheduling method, power grid operation uncertainty is lowered after intermittent energy power generation is accessed, intermittent energy power generation can be furthest accepted, and the safety and the economy of the power grid operation can be improved.

Description

technical field [0001] The invention belongs to the technical field of electric power dispatching automation, and relates to an active power dispatching method for intermittent energy generation based on multi-period power generation plan coordination and optimization. Background technique [0002] The optimization of power generation plan is an important task in the dispatching operation of the power system, and it plays an important role in the safe and economical operation of the power grid. With the increasingly serious global energy and environmental problems, wind power, photovoltaic power generation and other renewable energy power generation has developed rapidly in recent years, and its proportion in the system is getting higher and higher. However, intermittent energy generation depends on changing meteorological conditions, and has poor predictability, randomness, and volatility. The grid connection of large-scale intermittent energy generation has brought new cha...

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Problems solved by technology

However, for large-scale intermittent energy generation grid connection, due to the large random fluctuation of power generation, after superimposing with the load forecast deviation, the value of the system unbalance is large, which will cause large changes to the real-time plan; further, if the unbalanced The measurement is all eliminated in the real-time plan, and the situation of insufficient adjustable capacity often occurs, which affects the safety and economy of the system

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