Wind power admission regulation and control method considering short-time operation state of power grid

Abstract

The invention provides a wind power admission regulation and control method considering a short-time operation state of a power grid, and relates to the field of new energy admission of a power system. The method comprises the steps of on the premise of considering power grid peak regulation constraints and grid frame constraints, carrying out sensitivity analysis on the influence factors influencing the wind power admitting ability, and by means of a D5000 intelligent power grid dispatching technology supporting system, reading the operation data, such as a short-time starting mode, the loadlevel and the power flow direction of a power grid. The invention provides a provincial power grid wind power acceptance capability calculation principle and method to solve The wind power acceptancecapability index values of the power grid in different operation state, and further a coordinated power grid scheduling plan making and wind power accepting capability combined optimization schedulingmodel is constructed, so that the coordinated operation of a conventional power supply and the wind power is realized, the impact of wind power on the power grid operation is reduced, the actual windpower receiving capacity of the power grid is reflected more accurately, and the method has important significance for improving the new energy receiving capacity and the safe and stable operation ofthe high-permeability new energy power grid.

Description

technical field [0001] The invention relates to the field of new energy acceptance in electric power systems, in particular to a wind power acceptance regulation method that takes into account the short-term operation state of the power grid. Background technique [0002] Under the regulation and encouragement of the national policy of supporting the renewable energy industry, my country's wind power has developed rapidly. In recent years, my country's wind power grid-connected capacity has reached 60,830 MW, power generation has reached 100.4 billion kWh, and newly installed wind power capacity has reached 14,000 MW. Wind power has surpassed nuclear power to become the third major power source after coal power and hydropower. With the rapid growth of wind power installed capacity, the problem of large-scale wind power grid-connected consumption has become more and more prominent, and various degrees of wind power curtailment have occurred in various regions, which has trigg...

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Problems solved by technology

The calculation method thus determined has good adaptability in terms of theoretical analysis, but in determining the wind power acceptance capacity of the actual power grid, it does not consider the dispatching operation mode of the actual power grid, so it lacks universal practicability; The peak shaving model with the maximum capacity as the objective function takes into account the uncertainty of intermittent energy sources in the calculation process of wind power capacity, but does not consider the influence of factors on the power supply side; The calculation method of wind power acceptance capacity, quantitatively studied the impact of wind power access on power grid peak regulation, but did not involve the dispatching operation mode of the actual power grid; Optimizing the wind power operation strategy is not suitable for arranging the short-term start-up of other units in the power grid; some have built a Delphi-based timing analysis simulation platform to adjust the load curve under the condition that the transmission power of the tie line is fixed. Quantitatively analyze the improvement degree of the wind power capacity of the system under the load time series curve, but because the unit startup mode in the dispatch plan is not considered, the calculation accuracy is affected

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