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Method and system for medium and long-term power multi-channel complementary coordinated transmission of hydropower enrichment grid

A multi-channel, medium and long-term technology, applied in data processing applications, instruments, computing, etc., can solve the problems of insufficient channels and waste of water and electricity resources, waste of hydropower resources, etc., to promote large-scale consumption and improve hydropower consumption capacity. Effect

Active Publication Date: 2022-04-15
STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that on the one hand, hydropower is enriched, and on the other hand, the channel is idle and has no electricity to send or the channel is insufficient to discard water and electricity, resulting in a large amount of waste of hydropower resources. The purpose is to provide a long-term power multi-channel for hydropower enrichment grid Complementary and coordinated sending method and system, solving the problem of using complex sending channels to rationally arrange hydropower sending plans and absorbing large-scale hydropower and other clean energy

Method used

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  • Method and system for medium and long-term power multi-channel complementary coordinated transmission of hydropower enrichment grid
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  • Method and system for medium and long-term power multi-channel complementary coordinated transmission of hydropower enrichment grid

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Embodiment 1

[0032] This embodiment 1 is a method for sending medium- and long-term power multi-channel complementary coordination in a hydropower enrichment grid, specifically as follows:

[0033] (1) Determine the water level control objectives of key reservoirs in major river basins, and estimate the power generation capacity of the hydropower system. Combined with the power grid dispatching operation and safety control requirements, the final control water level target of each control reservoir is determined, and the runoff prediction is considered, and the maximum power generation model is used to estimate the power generation capacity of the hydropower system.

[0034] 1) Objective function

[0035]

[0036] 2) Constraints

[0037] Water balance equation: to ensure the water balance in the period dimension of a single station and the space dimension of upstream and downstream power stations, as follows:

[0038] V m,t+1 =V m,t +hn×(Q m,t -q m,t -Ql m,t )Δ t

[0039] End w...

Embodiment 2

[0067] This embodiment 2 is based on the embodiment 1, a kind of medium and long-term power multi-channel complementary coordinated sending system of hydropower enrichment grid, including: hydropower system power generation capacity determination module, channel output scale determination module, optimization module and output module.

[0068] Among them, the power generation capacity determination module of the hydropower system is used to estimate the power generation capacity of the hydropower system by using the maximum power generation model according to the water level control objectives of the key reservoirs in the main river basins in the hydropower enrichment grid;

[0069] The channel external transmission scale determination module is used to analyze the grid-connected relationship of the hydropower station group at the sending end and the associated external transmission channel, the topology of the transmission section, and construct a partition recursive constrain...

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Abstract

The invention discloses a method and system for long-term multi-channel complementary and coordinated delivery of electricity in a hydropower enrichment grid. According to the water level control target of key reservoirs in main river basins in the hydropower enrichment grid, the maximum power generation model is used to estimate the power generation capacity of the hydropower system; and the power grid at the sending end is analyzed. The grid-connected relationship of the hydropower station group and the associated outgoing channel, describe the topology of the transmission section and construct the partition recursive constraint equation of the section's transmission capacity, and determine the outgoing transmission scale of each channel; with the goal of minimizing the amount of abandoned water and the power of the receiving end grid The total power receiving capacity is the control condition, and the transmission limit of each channel is constrained to construct a multi-channel complementary coordination optimization model; according to the multi-channel complementary coordination optimization model, the hydropower delivery plan is optimized. The invention helps to expand the method for describing the transmission control section of the power grid in the hydropower dispatching of the hydropower enrichment power grid, can provide a more efficient hydropower delivery plan, and promote the large-scale consumption of clean energy.

Description

technical field [0001] The invention relates to the field of hydropower dispatching operation, in particular to a method and system for multi-channel complementary and coordinated delivery of mid- and long-term electricity in a hydropower enrichment grid. Background technique [0002] my country's hydropower resources are mainly concentrated in the southwestern region, especially Sichuan and Yunnan. The installed capacity of hydropower ranks first and second respectively. However, due to the low local load demand, surplus hydropower needs to be sent to East China, South China, Central China is a medium-load center, so how to make full use of the complex delivery channels and rationally arrange the hydropower transmission plan is of great practical significance for the consumption of large-scale hydropower and other clean energy and avoiding unnecessary water abandonment. [0003] Taking Sichuan Power Grid as an example, as the largest and most complex provincial hub power gri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/06375G06Q50/06
Inventor 苗树敏王亮魏巍王永灿陈刚丁理杰常晓青杜成锐张弛王金龙王莉丽
Owner STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST