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Reliability comprehensive estimation method considering electrical main wiring topology for wind power plant

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: 2019-03-15
SOUTH CHINA UNIV OF TECH +1
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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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  • Reliability comprehensive estimation method considering electrical main wiring topology for wind power plant
  • Reliability comprehensive estimation method considering electrical main wiring topology for wind power plant
  • Reliability comprehensive estimation method considering electrical main wiring topology for wind power plant

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Embodiment Construction

[0062] 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.

[0063] 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 reliability comprehensive estimation method considering an electrical main wiring topology for a wind power plant. The reliability comprehensive estimation method comprises the following steps of S1, calculating expected output EX<W> of multiple draught fans on the same outgoing line of a power collection system; S2, calculating expected output EX<c> of each outgoing lineof the power collection system; S3, calculating wind power plant expected output EX considering influence of a boost station topology; and S4, calculating a reliability index of the wind power plant,wherein the reliability index comprises power insufficient expected EDNS, wind power plant equivalent outage rate Q, wind power plant equivalent stop time T and electric quantity insufficient expected value EENS, wherein the EDNS=P<total>-EX, in the formula, P<total> is total installation capacity of the wind power plant, Q=EDNS / P<N>, T=Q*8760h, and EENS=P<total>*T. The influence of wind power generator set output characteristic, wind speed probability distribution, a wind power generator set fault, the power collection system and a boost power station component fault on the reliability of the wind power plant is comprehensively considered, and the reliability of the wind power plant can be completely and objectively estimated.

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 Applications(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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