Fengshui joint scheduling method considering the accumulation process of weather forecast uncertainty

An uncertainty and weather forecasting technology, applied in climate change adaptation, data processing applications, instruments, etc., can solve the problems of insufficient capacity adjustment capacity of hydropower stations, little hydropower self-benefit, waste of water energy, etc., to improve resources. Optimize configuration capabilities, promote new energy consumption, and achieve the effect of coordinated operation

CN109726929BActive Publication Date: 2021-09-07ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-09-07

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Abstract

The present invention provides a geomantic hydropower joint dispatching method considering the accumulation process of weather forecast uncertainty, including establishing a geomantic hydropower long-term joint dispatching objective function; The hydropower station releases the flow constraint expression, and solves the long-term joint dispatching objective function of Fengshui; based on the fluctuation F of the combined output of Fengshui power generation 1 , Fengshui power generation joint output, hydropower discarded water conversion power F 2 F 3 Carry out Feng Shui joint scheduling. On the basis of considering the accumulative process of medium and long-term wind and runoff forecast uncertainty, the invention takes the minimum fluctuation of wind-water power generation combined output as one of the goals, and is based on the perspective of hydropower stations to meet the guaranteed output of hydropower stations and reduce waste as much as possible. Water is the second and third goals. Under the relevant operational constraints, the coordinated operation of Fengshui resources on a medium and long-term scale is realized.
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Description

technical field

[0001] The invention relates to the field of wind power control, in particular to a wind-water joint scheduling method considering the accumulation process of weather forecast uncertainty. Background technique

[0002] The development and utilization of renewable energy is an important way to deal with global climate change and energy shortages, but at the same time, due to the volatility and uncontrollability of wind energy resources, the problem of wind power consumption has become increasingly prominent. According to statistics, from 2011 to 2015 The annual national average wind abandonment rate reached 13.4%, and in 2016 the national wind abandonment rate reached 17.1%.

[0003] Hydropower and wind energy resources have good seasonal complementarity, and the storage capacity adjustment capacity of the reservoir and the rapid response characteristics of the hydropower unit enable the hydropower output to track and compensate the output change of wind power...

Examples

Embodiment Construction

[0094] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0095]The invention discloses a wind-water joint scheduling method considering the accumulation process of weather forecast uncertainty, which includes the following steps:

[0096] S1. Taking the minimum fluctuation of the joint output of wind and water power generation, the minimum water waste of hydropower in the joint output of wind and water power generation, and the guarantee of the output of the hydropower station in the joint output of wind and water power generation as the goal, establish the long-term joint scheduling objective function of wind and water:

[0097]

[0098] in, E. t-s (P wk.t ) represents the output expectation of the kth wind farm in the (t-1,t) period based on the forecast wind speed of the kth wind farm in the future (t-1,t) period released at time s, P wk.t Indicates the actual output of the kth wind farm in the (t-1,t) pe...