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Method for evaluating reliability of large power grid comprising wind power station

A technology for large power grids and wind farms, which is applied in the field of reliability assessment of large power grids, and can solve the influence of reliability reliability of large power grids, uneven distribution in time and space, and the inability of large power grid reliability evaluation models and index systems to meet the requirements. requirements, etc.

Inactive Publication Date: 2014-04-02
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1
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Problems solved by technology

Due to the intermittent and random nature of wind energy, the distribution in time and space is very uneven. The power output of wind farms fluctuates with changes in wind energy resources, time and space. It has a great impact on the safe and stable operation of the power system, especially on the reliability of the large power grid. The traditional reliability evaluation model and index system of the large power grid cannot meet the requirements. It is necessary to propose a new wind farm Evaluation Method of Large Power Grid Reliability

Method used

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  • Method for evaluating reliability of large power grid comprising wind power station
  • Method for evaluating reliability of large power grid comprising wind power station
  • Method for evaluating reliability of large power grid comprising wind power station

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Embodiment Construction

[0083] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0084] The invention mainly proposes a method for evaluating the reliability of a large power grid including a wind farm. The specific steps of this evaluation method are as follows: figure 1 As shown, the specific steps of the method are as follows:

[0085] Step 1: Establish a time-series power output model of the wind farm;

[0086] Such as figure 2 Shown is the flowchart of the establishment method of the time series power output model of the wind farm, and the specific steps are as follows:

[0087] 11) Enter the basic parameter data of the wind turbine; the basic parameter data includes the failure rate and repair rate of the wind turbine, the number of wind turbines in the wind farm, and the number of years of simulation;

[0088] 12) Count a large amount of historical wind speed data, establish an ARMA wind speed prediction model, ...

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Abstract

The invention discloses a method for evaluating reliability of a large power grid comprising a wind power station, which belongs to the technical field of evaluation on reliability of a power system. The method comprises the following steps of: firstly, establishing a wind power station time sequence power output model; then combining the wind power station time sequence power output model and a large power grid system to establish a wind power station large power grid reliability model; establishing an index system for evaluating the reliability of the large power grid comprising the wind power station; finally, evaluating the reliability of the large power grid comprising the wind power station by applying a sequential Monte Carlo simulation method. According to the invention, the related reliability model and index system are respectively established from the power grid side and the wind power station side for balancing influence of switching-in of the wind power station on reliability of the large power grid; the integral reliability condition of the system and contribution of the wind power station to the adequacy of the large power grid can be more sufficiently reflected.

Description

technical field [0001] The invention belongs to the technical field of power system reliability evaluation, and in particular relates to a method for evaluating the reliability of a large power grid including wind farms. Background technique [0002] With the increasing demand for energy in the world and the development and utilization of renewable resources, wind energy is becoming more and more important as a renewable and clean new energy. Due to the mature technology and relatively low cost of power generation, wind power has become the most important alternative form of conventional energy. Due to the intermittent and random nature of wind energy, the distribution in time and space is very uneven. The power output of wind farms fluctuates with changes in wind energy resources, time and space. It has a great impact on the safe and stable operation of the power system, especially on the reliability of the large power grid. The traditional reliability evaluation model and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
Inventor 毛安家高忠旭黄昀思陈得治宋云亭
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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