Method and device for constructing typical scene library of centralized spot market
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A construction method and centralized technology, applied in the field of power system dispatching automation, can solve problems such as huge differences, changeable grid currents, and unlikely occurrences, and achieve the effect of ensuring reliable, safe and stable operation and improving calculation accuracy.
Active Publication Date: 2021-07-13
NARI NANJING CONTROL SYST +3
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[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...
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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. Combining the characteristics of the power supply, grid structure, load characteristics and market factors of the centralized spot market, the factors affecting the bidding behavior of power generators are analyzed, mainly including the external factors that affect the bidding behavior of power generators and the own factors of power generators.
[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 power generation business units.
[0055] External factors include market regulation, other market prices, load size, supply and demand ratios, renewable resources, and grid congestion. Other market prices are further divided into three aspects...
Embodiment 2
[0089] Based on the same inventive concept as in Embodiment 1, a typical scenario 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 segmented bidding model of generators in the centralized spot market;
[0091] The bidding scenario generation module is used to independently sample the bidding behavior of each power generation company based on the probability distribution model of bidding capacity and bidding price, so that each power generation company independently generates N typical market bidding scenarios;
[0092] The boundary scenario generation module is used to combine the boundary data based on the centralized spot market to generate N typical scenarios of market boundaries;
[0093] The typical scenario library generation module is used to combine N typi...
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Abstract
The invention discloses a method for constructing a typical scene library of a centralized spot market. The method comprises the following steps: extracting bidding behavior influence factors of a power producer; establishing a segmented bidding curve basic model of the power producer; determining a probability distribution model of the bidding electric quantity and the bidding price of each section of the segmented bidding curve; sampling based on the probability distribution model, and generating a typical market bidding scene of the power producer; generating a market boundary typical scene based on source network load characteristics of the power grid; combining and reducing the market bidding typical scene and the market boundary typical scene, and constructing a typical scene library for centralized spot market operation characteristic analysis. The method can construct a grouped scene set and generate a typical scene library according to different source network load characteristics and different bidding scenes of of the power producers, facilitates the construction of a market simulation multi-scene comparison analysis technology, displays the difference between different scenes, is of great significance in analyzing the operation characteristics of the centralized spot market and improving the safe operation level of the power grid under the market condition.
Description
technical field [0001] The invention belongs to the technical field of electric power system dispatching automation, and in particular relates to a method for constructing a typical scene library suitable for analyzing the operation characteristics of a centralized spot market, and also relates to a construction device for a typical scene library suitable for analyzing the operation characteristics of a centralized spot market. Background technique [0002] The power spot market mainly has two modes: decentralized and centralized, and the formation process of dispatching plans is different under different modes. Decentralized spot markets are suitable for areas with strong grid structures and light congestion, while centralized spot markets are suitable for areas with heavy congestion. Compared with the decentralized one, the centralized spot market implements the centralized optimization of power generation and consumption resources. Although it is more difficult in terms o...
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