Short-term reliability assessment method for wind power grid-connected system nodes considering demand response
A demand response and system node technology, applied in computing, data processing applications, instruments, etc., can solve the problem that it is difficult to give full play to the positive effect of DR projects on the reliability of wind power grid-connected systems, and it is impossible to clearly describe the impact of DR projects on the reliability of the grid Level impact, DR project control strategy and other issues have not been proposed, to achieve the effect of improving wind power consumption capacity, alleviating the impact of grid reliability, and reducing system operating costs
Active Publication Date: 2021-07-27
TAIYUAN UNIV OF TECH
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Problems solved by technology
[0006] The present invention solves the problem that the existing wind power grid-connected system reliability evaluation method does not analyze the impact of DR projects on short-term reliability from the perspective of nodes, and it is difficult to fully exert the positive effect of DR projects on the reliability of wind power grid-connected systems. All DR projects have not proposed a control strategy for using DR project combinations, lack of reasonable planning for all DR projects, and cannot clearly describe the impact of implementing all DR projects on the reliability level of the power grid, providing a wind power that takes demand response into account Short-term reliability assessment method for grid-connected system nodes
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[0055] The short-term reliability evaluation method for wind power grid-connected system nodes considering demand response includes the following steps:
[0056] 1. User demand response load modeling: The user demand response load model refers to the user comprehensively considering the electricity price at the current time point and other time points, and changing the original planned electricity consumption to reduce electricity consumption or shift the electricity consumption during high electricity price periods to According to the definition, this evaluation method divides DR projects into two categories: DR projects based on market prices and DR projects based on faults; the first type of DR projects is called normal DR programs (normal DR programs, NDRP ), in NDRP, users manage electricity demand based on electricity price and incentive mechanism; in the second type of DR project, when the failure seriously affects the reliability level, the response of users who sign DR...
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The invention relates to a reliability analysis method of a power system, specifically a short-term reliability evaluation method for wind power grid-connected system nodes that takes demand response into account, and solves the problem that the existing evaluation method does not analyze the impact of short-term reliability, and it is difficult to play a positive role in the reliability of DR projects , did not adopt all DR projects, did not propose a control strategy, lacked reasonable planning, and could not describe the impact of implementing all DR projects on the reliability level of the power grid. Steps: 1. Modeling of customer demand response load; DR project portfolio priority hierarchy model; 3. Short-term reliability assessment of wind power grid-connected system considering demand response. Advantages: provide reference for the best DR project combination for operation and scheduling; verify the effectiveness of implementing DR projects, reduce blackout accidents, improve reliability, reduce costs, alleviate the impact of wind power fluctuations, and improve absorption capacity; provide decision-making guidance; make up for traditional Flaws in the assessment method.
Description
technical field [0001] The invention relates to a reliability analysis method of a power system, in particular to a short-term reliability evaluation method for wind power grid-connected system nodes taking into account demand response. Background technique [0002] Demand response (DR) is defined as the electricity demand that users respond to by changing their fixed consumption patterns when electricity prices rise or system reliability is threatened. The output of wind power is intermittent and unpredictable, and the fluctuation of wind power output increases the peak-valley difference of the power grid, which has brought a huge impact on the reliability of the system. Introducing DR into the wind power grid-connected system can guide users to reduce or transfer power loads, improve load consumption curves, and improve system reliability; on the other hand, it can ease the demand for grid capacity and delay the investment in energy storage equipment and power plant constr...
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IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0639G06Q50/06
Inventor 韩肖清张文秀张佰富秦文萍贾燕冰
Owner TAIYUAN UNIV OF TECH