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Comprehensive assessment method for wind farm reliability considering electrical main wiring topology

A comprehensive evaluation, wind farm technology, applied in the direction of electrical components, wind power generation, circuit devices, etc., can solve problems such as evaluation

Active Publication Date: 2022-05-17
SOUTH CHINA UNIV OF TECH +1
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  • Claims
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Problems solved by technology

The wind farm reliability assessment method proposed in the above literature does not evaluate the reliability of the wind farm based on the complete wind turbine-collection system-booster station wind farm electrical main wiring topology, but only evaluates the local reliability of the wind farm

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  • Comprehensive assessment method for wind farm reliability considering electrical main wiring topology
  • Comprehensive assessment method for wind farm reliability considering electrical main wiring topology
  • Comprehensive assessment method for wind farm reliability considering electrical main wiring topology

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Embodiment Construction

[0061] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. And the features in the embodiments can be combined with each other.

[0062] An embodiment of the present invention provides a wind farm reliability comprehensive evaluation method considering the electrical main wiring topology, such as figure 1 As shown, it includes four steps, which are: S1. Calculate the expected output of multiple wind turbines on the same outlet of the collector system; S2. Calculate the expected output of each outlet of the collector system; S3. Calculate the topology of the booster station The expected output of the entire wind farm affected; S4. Calculating each reliability index of the wind farm. figure 2 It is a diagram of the reliability comprehensive evaluation system of the present invention...

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Abstract

The invention discloses a method for comprehensively evaluating the reliability of a wind farm considering the electrical main wiring topology, comprising the following steps: S1, calculating the expected output EX of multiple wind turbines on the same outgoing line of the power collection system W ; S2. Calculate the expected output EX of each outgoing line of the collector system C ; S3. Calculate the expected output EX of the wind farm considering the influence of the booster station topology; S4. Calculate the reliability index of the wind farm, which specifically includes the expected power shortage EDNS, the equivalent outage rate Q of the wind farm, and the equivalent outage rate of the wind farm Operation time T, expected value of insufficient power EENS, where: EDNS=P 总 ‑EX, where: P 总 is the total installed capacity of the wind farm; T=Q·8760h; EENS=P 总 ·T. The invention comprehensively considers the influence of the output characteristics of the wind turbine unit and the probability distribution of wind speed, the failure of the wind turbine unit, the failure of the current collection system and the component failure of the step-up power station on the reliability of the wind farm, and can perform a complete and objective evaluation on the reliability of the wind farm.

Description

technical field [0001] The invention relates to the field of wind farm reliability evaluation, in particular to a wind farm reliability comprehensive evaluation method considering the electrical main wiring topology. Background technique [0002] At present, the development and construction of wind farms is an important measure for my country to implement its energy development strategy and energy transformation. The rapid development of wind power has created many opportunities but also brought great challenges. On the one hand, wind turbines work in a complex and changeable environment, and are exposed to sudden changes in temperature, wind speed, dust, rainfall, and snow for a long time, causing frequent failures of wind turbines and resulting in high operation and maintenance costs. According to statistics, the operation and maintenance cost of onshore wind farms is as high as 15%-20% of the total economic income, and that of offshore wind farms is even as high as 30%-3...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38
CPCH02J3/386H02J2203/20Y02E10/76
Inventor 王晓东杨苹刘泽健陆进威叶长青王鹏唐惜春陈恋鲆管品发
Owner SOUTH CHINA UNIV OF TECH
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