Unlock instant, AI-driven research and patent intelligence for your innovation.

Medium-and-long-term electric quantity multi-channel complementary coordination sending-out method and system for hydroelectric enrichment power grid

A multi-channel, mid-to-long-term technology, applied in the direction of instruments, data processing applications, resources, etc., can solve problems such as insufficient channels, discarded water and electricity, waste of hydropower resources, etc.

Active Publication Date: 2020-10-23
STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
View PDF6 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Medium-and-long-term electric quantity multi-channel complementary coordination sending-out method and system for hydroelectric enrichment power grid
  • Medium-and-long-term electric quantity multi-channel complementary coordination sending-out method and system for hydroelectric enrichment power grid
  • Medium-and-long-term electric quantity multi-channel complementary coordination sending-out method and system for hydroelectric enrichment power grid

Examples

Experimental program
Comparison scheme
Effect test

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

[0068] 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.

[0069] 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;

[0070] The channel external transmission scale determination module is used to analyze the grid-connected relationship of the hydropower station group at the sending end power grid and the associated external transmission channels, describe the topology of the transmission section and construct a partition...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a medium-and-long-term electric quantity multi-channel complementary coordination sending-out method and system for a hydroelectric enrichment power grid. The method comprisesthe steps: estimating the power generation capability of a hydroelectric system through employing a power generation capacity maximum model according to a water level control target of a key reservoirof a main watershed in the hydroelectric enrichment power grid; analyzing a grid-connected relationship and associated delivery channels of the sending-end power grid hydropower station group, describing a power transmission section topological structure, constructing a partition recursion constraint equation of section power transmission capability, and determining the delivery scale of each channel; constructing a multi-channel complementary coordination optimization model by taking minimization of the water abandoning electric quantity as a target, taking the total power receiving capability of a receiving-end power grid as a control condition and taking the transmission limitation of each channel as a constraint; and optimizing a water and electricity delivery plan according to the multi-channel complementary coordination optimization model. According to the method, the description method of the power grid power transmission control section in hydroelectric enriched power grid hydroelectric scheduling can be expanded, a more efficient hydroelectric delivery plan can be given, and large-scale consumption of clean energy is promoted.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
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