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Power system source-grid-load interaction control strategy evaluation method

A power system, interactive control technology, applied in the intersection of control theory and system theory, in the field of power system theory, can solve problems such as the inability to adapt to "source-grid-load" interactive operation

Inactive Publication Date: 2015-11-04
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the "source-grid-load" interactive environment, the power source, power grid and load all have flexible characteristics, and the controllable load will also become an important means for grid regulation and consumption of new energy. The existing control of "power generation tracking load" The method can no longer meet the needs of future "source-network-load" interactive operation
In addition, there is no reasonable index to evaluate the interaction impact and benefit of "source-network-load" at present, and it is necessary to establish an open evaluation index system to measure the rationality of the interactive control scheme

Method used

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  • Power system source-grid-load interaction control strategy evaluation method
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  • Power system source-grid-load interaction control strategy evaluation method

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Embodiment

[0122] The embodiment of the present invention adopts the IEEE39 node 10 machine system as the test system, such as image 3 shown. Set nodes 30, 31, 32, 33, 34, 35, 36, and 37 as conventional thermal power units, nodes 38 and 39 as centralized access points for wind power, nodes 3, 4, 7, 8, 12, 15, 16, and 18 , 20, 21, 22, 24, 25, 26, 27, 28, 29, 31, 39 are load nodes. At the same time, the system is divided into two areas, and the load types and response characteristics in each area are different. Area 1 is set as a typical commercial and residential area, which is more sensitive to electricity prices and belongs to the price-sensitive area. In area 1, the proportion of loads responding to electricity prices is 40%, the elastic coefficient is -0.2, and the interactive potential range is [-50%, 50%], the proportion of responsive excitation load is 20%, the interactive potential range is [-50%, 50%], and the remaining 40% is rigid load whose power cannot be adjusted; area 2 ...

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Abstract

The invention relates to a power system source-grid-load interaction control strategy evaluation method comprising the following steps: acquiring power information and natural power characteristics of a power source side, a grid side and a load side of a power system, analyzing the interaction behavior characteristic of power equipment, and establishing a power system interaction resource structure; analyzing the response characteristics of interaction resources to electricity price, incentive and scheduling interaction mechanisms, and establishing power variation curves of the interaction resources under different interaction mechanisms; determining the interaction potential of the interaction resources, and establishing an interaction cost variation curve of the interaction resources within the scope of interaction potential; determining the amount of interaction of the interaction resources under the three interaction mechanisms, selecting an interaction strategy combination which meets the demand of system power balancing and minimizes the total cost of interaction, and obtaining an interaction control scheme; and evaluating the interaction control scheme respectively from the aspects of response characteristic, effect of interaction, grid security and grid economy, and comprehensively evaluating the influence of the source-grid-load interaction control strategy to the grid and the interaction efficiency of the strategy. The limitation of single index is overcome.

Description

technical field [0001] The invention relates to the intersection technology of power system theory, control theory and system theory, in particular to an evaluation method for power system source-network-load interaction control strategy. Background technique [0002] Open interaction is one of the important characteristics of smart grid. With the rapid development of new theories, new technologies, and new materials, power sources, power grids, and loads all have flexible features. Stochastic renewable energy, together with flexible power sources such as hydropower, gas turbines, and pumped storage, is developing in a predictable and controllable direction, and grid-friendly controllable conventional loads and microgrids, energy storage, electric vehicles, demand response, etc. It will develop into a flexible load that can adapt to the needs of power grid regulation. There are flexible and controllable devices such as FACTS in the power grid; the improvement of information...

Claims

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Application Information

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IPC IPC(8): G06Q50/06
CPCY02E40/70Y04S10/50
Inventor 周竞李亚平王珂石飞刘建涛曾丹郭晓蕊毛文博米富丽
Owner STATE GRID CORP OF CHINA
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