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A typical scene library construction method and device for centralized spot market

A construction method and a centralized technology, applied in the field of power system dispatching automation, can solve problems such as huge differences, changeable grid power flows, and unlikely occurrences, and achieve the effect of ensuring reliable, safe and stable operation and improving calculation accuracy

Active Publication Date: 2022-07-01
NARI NANJING CONTROL SYST +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, many problems have been exposed in the simulated test run of the domestic centralized spot market
At present, everyone's judgment on grid congestion is based on the current planning system. For example, dispatching arranges unit combination plans based on safety constraints and maintenance plans, and all thermal power units maintain basically the same load rate. After the implementation of the spot market, the unit combination plan needs Considering the economy, the load rate of the unit is significantly different, so the distribution of the power flow in the spot market will be greatly different from the current situation, which will lead to aggravation of grid congestion; there are many participants in power trading, and in order to maximize their own interests, all parties may use various methods to maximize their own interests. Participate in electricity market transactions in different forms, and adopt a variety of quotation strategies, which will lead to changeable and unpredictable power grid flows, and operators will face a much more complicated grid operation situation than it is now. Power transmission from the load center to the power base, circular power transmission, etc., all of which may occur under the influence of the market

Method used

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  • A typical scene library construction method and device for centralized spot market
  • A typical scene library construction method and device for centralized spot market
  • A typical scene library construction method and device for centralized spot market

Examples

Experimental program
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Effect test

Embodiment 1

[0052] A typical scene library construction method of a centralized spot market proposed by the present invention, see figure 1 shown, including the following steps:

[0053] Step 1: Combine the power supply characteristics, grid structure, load characteristics and market factors of the centralized spot market to analyze the influencing factors of the bidding behavior of generators, mainly including external factors that affect the bidding behavior of generators and factors of the generators themselves.

[0054] Power characteristics specifically refer to the geographical distribution, capacity, and type of power generation resources; they are related to the characteristics, capacity, and location of the following generators.

[0055] External factors include market rules, other market prices, load sizes, supply and demand ratios, renewable resources and grid congestion. Other market prices are further divided into three aspects: auxiliary service price, fuel price and online...

Embodiment 2

[0089] Based on the same inventive concept as Embodiment 1, a typical scene library construction device for a centralized spot market of the present invention includes:

[0090] The probability distribution calculation module is used to calculate and obtain the probability distribution model of bidding capacity and bidding price based on the centralized spot market generator segment bidding model;

[0091] The bidding scenario generation module is used to independently sample the bidding behavior of each power generator based on the probability distribution model of bidding capacity and bidding price, so that each power generator can independently generate N typical market bidding scenarios;

[0092] The boundary scene generation module is used to combine based on the boundary data of the centralized spot market to generate N typical market boundary scenes;

[0093] The typical scenario library generation module is used for N typical scenarios of market boundaries and N typical ...

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Abstract

The invention discloses a typical scene library construction method of a centralized spot market. It includes the following steps: extracting factors affecting the bidding behavior of power generators; establishing a basic model of the power generator's subsection bidding curve; determining the probability distribution model of the bidding power and bidding price of each section of the subsection bidding curve; sampling based on the probability distribution model to generate the power generator market A typical scenario of bidding; based on the characteristics of the power grid's source and network loads, a typical scenario of the market boundary is generated; the typical scenario of the market bidding and the typical scenario of the market boundary are combined and reduced to construct a typical scenario library for the analysis of the operation characteristics of the centralized spot market. The invention can construct a grouped scene set and generate a typical scene library according to the characteristics of different source network loads and different bidding scenes of power generation companies, which is helpful for building a market simulation multi-scene comparison and analysis technology, showing the differences between different scenes, and analyzing centralized analysis. The operating characteristics of the spot market and the improvement of the safe operation level of the power grid under market conditions are of great significance.

Description

technical field [0001] The invention belongs to the technical field of power system scheduling automation, and in particular relates to a typical scene library construction method suitable for the analysis of the operation characteristics of the centralized spot market, and also relates to a typical scene library construction device suitable for the analysis of the operation characteristics of the centralized spot market. Background technique [0002] The electricity spot market mainly has two modes: decentralized and centralized, and the formation process of dispatching plans under different modes is different. The decentralized spot market is suitable for areas with strong grids and light congestion, and the centralized spot market is suitable for areas with heavier congestion. Compared with the decentralized, centralized spot market implements centralized optimization of power generation and consumption resources. Although it is more difficult to design market rules and m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q30/02G06Q30/06G06Q50/06
CPCG06Q30/0611G06Q30/0201G06Q50/06Y04S50/14
Inventor 冷月李利利丁恰陆承宇邓晖周子青涂孟夫曹荣章昌力吴烁民
Owner NARI NANJING CONTROL SYST