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Photovoltaic power generation accommodating capacity calculation method taking static voltage stability into consideration

A technology of photovoltaic power generation and acceptance capacity, which is applied in computing, electrical digital data processing, special data processing applications, etc., and can solve the problems of reduced accuracy of final calculation results, complex modeling, and difficult data acquisition.

Inactive Publication Date: 2014-03-26
STATE GRID CORP OF CHINA +2
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Problems solved by technology

Considering randomness, it is more accurate and reasonable than the former, but its surface solar radiation time series model requires a large amount of extraterrestrial radiation data and model parameters. The radiation value is related to longitude, latitude and time, which is obtained by time integration, and the data is difficult to obtain.
Due to the complex modeling and heavy workload, it is easy to reduce the accuracy of the final calculation results

Method used

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  • Photovoltaic power generation accommodating capacity calculation method taking static voltage stability into consideration
  • Photovoltaic power generation accommodating capacity calculation method taking static voltage stability into consideration
  • Photovoltaic power generation accommodating capacity calculation method taking static voltage stability into consideration

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Embodiment Construction

[0063] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0064] A method for calculating the capacity of photovoltaic power generation taking into account static voltage stability, characterized in that the method specifically includes the following steps:

[0065] Step 1: Determine the grid structure diagram of the proposed photovoltaic power station site area, photovoltaic power generation and grid operation mode, conventional unit output data, load data, and multi-year hourly light intensity data of the proposed photovoltaic power station site;

[0066] The calculation is based on the grid structure diagram, grid PSASP (or BPA data packet), photovoltaic power generation and grid operation mode, conventional unit output data, load data, multi-year hourly light intensity da...

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Abstract

The invention discloses a photovoltaic power generation accommodating capacity calculation method taking static voltage stability into consideration in the field of power system photovoltaic power generation planning. The technical scheme includes that the method includes determining calculation conditions; analyzing light intensity data of a planned photovoltaic power station site area, acquiring a probability density function of photovoltaic array output power of the area, and determining actual capacity of a photovoltaic power station; building a probability optimal power flow model based on a chance-constrained planning theory; taking a Jacobian matrix minimum eigenvalue as an index measuring the static voltage stability of a system and as a part of an inequality constraint condition to be led into the probability optimal power flow model; utilizing an intelligent optimization algorithm to solve the optimal power flow model to acquire photovoltaic power generation accommodating capacity. By the method, photovoltaic capacity randomness can be taken into consideration, solar direct radiation, reflection, scattering radiation and temperature data are not needed, and the model is concise and accurate; more reasonability in result is realized by leading in a static voltage stability allowance index.

Description

technical field [0001] The invention belongs to the field of photovoltaic power generation planning in power systems, and in particular relates to a calculation method for photovoltaic power generation acceptance capacity considering static voltage stability. Background technique [0002] Energy is an important material basis for human survival and development. In recent decades, human consumption of energy has reached an unprecedented level, and traditional energy has gradually failed to meet people's needs. As a renewable energy source, solar energy is clean, non-polluting, and sustainable, and has broad application prospects. By the end of 2012, the cumulative global photovoltaic installed capacity had reached 96.5GW, accounting for 0.5% of global electricity. The top three are Germany with 32GW, China with 16GW, and Italy with 7GW. The cumulative photovoltaic installed capacity in Qinghai Province of my country has reached 1.5GW. [0003] Photovoltaic power generation ...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 李晖周明王智冬杜汪洋李庚银郭飞黄怡
Owner STATE GRID CORP OF CHINA
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