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Day-ahead clearing and reliability unit combination joint optimization method and system

A unit combination and joint optimization technology, applied in design optimization/simulation, information technology support systems, instruments, etc., can solve problems such as power supply reliability and security conflicts

Active Publication Date: 2020-12-25
NARI TECH CO LTD +2
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the theory of resource utilization maximization, when the market clears day-ahead, in order to achieve the optimal goal, the transmission resources of the power grid will be maximized. Therefore, in the link of reliability unit combination, there is a conflict between power supply reliability and security.

Method used

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  • Day-ahead clearing and reliability unit combination joint optimization method and system
  • Day-ahead clearing and reliability unit combination joint optimization method and system
  • Day-ahead clearing and reliability unit combination joint optimization method and system

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Embodiment Construction

[0055] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0056] like Figure 4 As shown, a joint optimization method for day-ahead clearing and reliability unit combination includes the following steps:

[0057] Step 1. Collect the data required for optimization; specifically, it includes the declaration information of power generators, market user declaration information, node power load forecast, backup demand curve of the whole network operation, unit technical parameters, power grid model parameters, etc.

[0058] Any electricity load needs to be connected to the grid to obtain electricity. In order to obtain affordable electricity prices, electricity companies or end users who actively participate in the market are defined as market users, and m...

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Abstract

The invention discloses a day-ahead clearing and reliability unit commitment joint optimization method and system, and the optimization model adopted by the invention aims at minimizing the total electricity purchasing cost after deducting the market load income, and guaranteeing the economical efficiency of the result while obtaining the clearing result of the day-ahead market and a reliability unit commitment scheduling plan. Meanwhile, unit scheduling plan constraints, day-ahead market bid-winning output constraints, reliability unit combination bid-winning output constraints, day-ahead market and reliability unit combination segmented output constraints, day-ahead market load balance constraints and reliability load balance constraints are considered in the model. Compared with a single day-ahead market clearing model or a reliability unit commitment model, only a small number of constraint conditions are added, the operation efficiency of the day-ahead market can be remarkably improved, and meanwhile the reliability and safety operation requirements of a power grid are considered.

Description

technical field [0001] The invention relates to a combined optimization method and system for day-ahead clearing and reliability unit combination, and belongs to the technical field of power system scheduling automation. Background technique [0002] The centralized power spot market is a mature market mechanism. One of the main characteristics of this model is that buyers and sellers use centralized bidding transactions to obtain the right to generate electricity and use electricity, and to discover the price of electricity in the market. Specifically, power generators report to the market the electricity that can be sold and the selling price, power users report to the market their electricity demand and purchase price, and the market operator centrally matches electricity transactions based on the volume and price information of buyers and sellers. When clearing, the optimization mathematical theory is usually used to establish a mathematical model with the maximization o...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06G06F30/20
CPCG06Q10/06313G06Q10/06315G06Q50/06G06F30/20G06F2111/04Y04S50/14
Inventor 张丙金张彦涛涂孟夫丁恰曹荣章徐帆李利利王文冷月
Owner NARI TECH CO LTD