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Day-ahead cascade water and electricity combined optimization method and device

A joint optimization and cascading technology, applied in data processing applications, forecasting, instruments, etc., can solve problems such as poor operating efficiency, long adjustment period, and high redundancy

Active Publication Date: 2019-08-09
NORTHWEST BRANCH OF STATE GRID POWER GRID CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] This application provides a method and device for joint optimization of cascade hydropower in order to solve the problems of long adjustment period, higher redundancy and poor operating efficiency in the current scheme

Method used

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  • Day-ahead cascade water and electricity combined optimization method and device
  • Day-ahead cascade water and electricity combined optimization method and device
  • Day-ahead cascade water and electricity combined optimization method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] figure 1 A schematic flow chart of the day-ahead cascaded hydropower joint optimization method provided in Embodiment 1 of the present application; refer to figure 1 , the day-ahead cascade hydropower joint optimization method provided by this application includes:

[0072] S101, based on annual regulation and above hydropower station control as the target modeling, obtain the first model;

[0073] S102, obtaining a second model based on the modeling of the control target of the seasonal regulation hydropower station;

[0074] S103, obtaining a third model based on the daily regulation hydropower station control target modeling;

[0075] S104. Based on the first model, the first model and the first model, the fourth model is obtained by modeling with the joint optimal control of cascade hydropower stations as the target.

[0076] S105, performing cascade upstream and downstream traffic coordination constraints based on the fourth model;

[0077] S106, constraining t...

Embodiment 2

[0082] In the method provided by this application: the following aspects need to be considered:

[0083] (1) Differentiation analysis of control objectives

[0084] The joint optimization of cascade hydropower needs to consider the differences in the operating characteristics of different cascades in the spatial dimension and the coordination of multiple time series such as year, season, and day in the time dimension, and do a good job in the unified coordination of time and space.

[0085] In terms of space dimension, focus on considering the inconsistency in the operation requirements of each cascade hydropower station due to the difference in regulation performance. According to the capacity adjustment capacity of hydropower stations, hydropower stations can be divided into annual regulation and above, seasonal regulation and daily regulation hydropower stations. The so-called annual adjustment and above refers to large-scale hydropower stations that can adjust the entire ...

Embodiment 3

[0147] Figure 4 A schematic structural diagram of the day-ahead cascaded hydropower combined optimization device provided in Example 3 of the present application. refer to Figure 4 , the day-ahead cascade hydropower joint optimization device provided by this application includes:

[0148] The first modeling module 41 is used for modeling based on annual regulation and above-mentioned hydropower station control, and obtaining the first model;

[0149] The second modeling module 42 is used for modeling based on the control target of the seasonal regulation hydropower station to obtain a second model;

[0150] The third modeling module 43 is used for modeling the control target of the daily regulating hydropower station to obtain a third model;

[0151] The fourth modeling module 44 is used to obtain a fourth model based on the first model, the first model and the first model with the joint optimal control of cascade hydropower stations as the objective.

[0152] The first ...

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Abstract

The invention relates to the technical field of cascade water and electricity combined optimization, in particular to a day-ahead cascade water and electricity combined optimization method and device.The method comprises the steps of obtaining a first model based on annual adjustment and hydropower station control as target modeling; based on the seasonal regulation hydropower station control target modeling, obtaining a second model; based on daily regulation hydropower station control target modeling, obtaining a third model; and modeling based on the first model, the first model and the first model by taking cascade hydropower station joint optimization control as a target to obtain a fourth model. Carrying out cascade upstream and downstream flow coordination constraint based on a fourth model; performing single hydropower station operation characteristic constraint based on a fourth model; performing cascade hydropower station operation characteristic constraint based on a fourthmodel; and solving the fourth model after the cascade upstream and downstream flow coordination constraint, the single hydropower station operation characteristic constraint and the cascade hydropower station operation characteristic constraint to obtain a cascade hydropower combined optimization scheme.

Description

technical field [0001] This application relates to the technical field related to cascade hydropower joint optimization, and specifically relates to a method and device for cascade hydropower joint optimization. Background technique [0002] my country is rich in water conservancy resources, and hydropower is an important type of power source in my country's power system. Therefore, the joint optimization of cascade hydropower in the basin has also become an important technical content of my country's power system dispatching and operation. According to the different optimal scheduling cycles, the joint optimization of cascade hydropower stations can be divided into different time scales such as annual, monthly, day-ahead, and intra-day. Among them, the joint optimization of cascade hydropower is a major problem in the joint optimization of cascade hydropower because it needs to consider complex nonlinear constraints such as the time-delay characteristics of the flow of ups...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06
Inventor 万筱钟廖春梅郭少青匡洪辉
Owner NORTHWEST BRANCH OF STATE GRID POWER GRID CO
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