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Reliability assessment method of power system including wind farm

A technology for power systems and wind farms, applied in electrical components, circuit devices, AC network circuits, etc., to reduce the total number of system states and speed up evaluation

Active Publication Date: 2017-08-01
永春县产品质量检验所福建省香产品质量检验中心国家燃香类产品质量监督检验中心福建
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Problems solved by technology

The existing literature mainly studies the reliability modeling of wind farms and the influence of wind speed correlation of wind farms on the reliability of power systems. Few literatures focus on the non-sequential Monte Carlo method research from the perspective of computational efficiency

Method used

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  • Reliability assessment method of power system including wind farm
  • Reliability assessment method of power system including wind farm
  • Reliability assessment method of power system including wind farm

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Experimental program
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Embodiment

[0047] The power system reliability evaluation method including wind farms includes the following steps: parameter initialization; wind farm modeling; using related random variable simulation technology to extract the state of the wind farm, and convert it into a binary state sequence, and then use the extracted generator, The binary state sequence combination of line elements constitutes the binary state of the system; the system state is coded in decimal and the same system state is identified; the different stored system states are calculated in parallel; the parallel calculation results are summarized and the system reliability indicators are calculated. By marking the system state with a decimal number, the same system sampling state can be quickly identified, reducing the total number of system states to be evaluated; on this basis, combined with parallel computing, the evaluation speed of system reliability is improved.

[0048] Such as figure 1 As shown, the power syst...

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Abstract

The invention provides a reliability evaluation method for an electric power system containing a wind power plant, which comprises the steps of initializing parameters; carrying out modeling on the wind power plant, extracting the state of the wind power plant by adopting correlated random variable simulation technologies, converting the state into a binary state sequence, and then combining the binary state sequence with extracted binary state sequences of a generator and circuit elements so as to form a binary state of the system; carrying out decimal coding on system states, and recognizing and combining the identical system states; carrying out parallel computation on the stored different system states; and collecting a parallel computation result, and calculating an index of the system reliability. According to the invention, through marking the system states by using decimal numbers, the identical system sampling states can be recognized quickly, and the total number of the system states to be evaluated is reduced; and parallel computation is combined on the basis, and the evaluation speed of the system reliability is improved.

Description

technical field [0001] The invention relates to a method for evaluating the reliability of a power system including a wind farm. Background technique [0002] Power system reliability assessment refers to the analysis and calculation of the adequacy or safety of the system under the consideration of various uncertain factors, including component outage model, system state selection, system state evaluation and system index calculation, etc. Content. [0003] Power system reliability assessment methods are mainly divided into two categories: analytical method and Monte Carlo method, and the Monte Carlo method is further divided into non-sequential and sequential Monte Carlo methods. The analytical method establishes the reliability mathematical model of the system and obtains various indicators of the system through numerical calculation methods. The Monte Carlo simulation method simulates the actual situation of the system on the computer, observes the simulation process f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00G06Q10/06G06Q50/06
Inventor 陈凡黄正刘海涛
Owner 永春县产品质量检验所福建省香产品质量检验中心国家燃香类产品质量监督检验中心福建
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