Changxing Wind Farm Lightning Protection Grounding Project Case
I.Project Background
With the rapid development of clean energy,wind power as an important form of renewable energy,its construction and application is increasingly widespread.However,wind farms are usually located in remote areas,vulnerable to lightning and other natural factors,so lightning protection and grounding engineering is particularly important.
II.The project overview
Changxing Heping wind farm collector lines are prone to tripping and unstable grounding resistance in thunderstorms.Due to the frequent lightning activities in the area,in order to ensure the safe operation of the wind farm,it was decided that the technical team of Oumaan Technology Group would implement the integrated circuit grounding resistance lightning protection and grounding project.
III.The cause of the analysis
1,due to the collector lines are mostly built on the ridge,the surrounding growth of a large number of trees and vegetation,it is inevitable that there will be branches and collector line conductors in contact with the situation.When it rains,the tree branches are wet by rain,trees by semiconductor into conductor,if there are branches touching the single-phase conductor may lead to the line single-phase ground fault occurs.
2,lightning strikes in thunderstorms,although the line itself does not suffer lightning strikes,but the huge lightning current in the surrounding space to produce rapid changes in the powerful magnetic field,in the vicinity of the metal conductor will be induced on the high voltage,when the induction of over-voltage more than the collector line lightning level,will lead to tripping the line,and in severe cases,will even burn the line.
3,the degree of corrosion of grounding materials.Corrosion of grounding materials will directly lead to an increase in contact resistance,equipotential connection failure,grounding material impact change rate of change,conductivity and conductivity reduction and other issues.In the wind power operation,should regularly check the connection of the grounding point,regular rust and appropriate anti-corrosion rust treatment.
IV.The implementation of the project
1,construction preparation
Before construction,the wind farm site survey to determine the location and number of flexible grounding electrode pouring.Prepare the required materials.Organise the construction team and carry out safety technology briefing.
2,Burying of flexible grounding electrode
According to the design scheme,digging and laying flexible grounding electrode burying pit in the selected location.After the completion of construction,the flexible grounding electrode resistance test to ensure that the grounding resistance meets the requirements.
V.Acceptance of the project and evaluation of the effect
After the completion of the project,strict acceptance.Test the grounding resistance,lightning protection grounding network resistance to ensure that all indicators are in line with the design requirements.At the same time,lightning monitoring of the wind farm to assess the effect of lightning protection and grounding works.
After a period of operation monitoring,the wind farm integrated circuit grounding resistance lightning protection grounding project has achieved significant results.Under the lightning weather,the wind farm equipment operated stably and there was no failure or damage caused by lightning.The project provides a strong guarantee for the safety of lightning protection of the wind farm,and also provides a useful reference for similar projects.At the same time,the project won the third prize of Huadian Group's 2021 Innovation and Efficiency QC Excellent Achievement,and the owner unit took the lead and initiative to promote and evaluate the award within its group.
To get more information about lightning protection project,welcome to call the consultation hotline!
Recommended lightning protection products:
Flexible Grounding Electrode:excellent resistance effect+anti-corrosion environmental protection and safety+applicable to a variety of terrain
I.Project Background
With the rapid development of clean energy,wind power as an important form of renewable energy,its construction and application is increasingly widespread.However,wind farms are usually located in remote areas,vulnerable to lightning and other natural factors,so lightning protection and grounding engineering is particularly important.
II.The project overview
Changxing Heping wind farm collector lines are prone to tripping and unstable grounding resistance in thunderstorms.Due to the frequent lightning activities in the area,in order to ensure the safe operation of the wind farm,it was decided that the technical team of Oumaan Technology Group would implement the integrated circuit grounding resistance lightning protection and grounding project.
III.The cause of the analysis
1,due to the collector lines are mostly built on the ridge,the surrounding growth of a large number of trees and vegetation,it is inevitable that there will be branches and collector line conductors in contact with the situation.When it rains,the tree branches are wet by rain,trees by semiconductor into conductor,if there are branches touching the single-phase conductor may lead to the line single-phase ground fault occurs.
2,lightning strikes in thunderstorms,although the line itself does not suffer lightning strikes,but the huge lightning current in the surrounding space to produce rapid changes in the powerful magnetic field,in the vicinity of the metal conductor will be induced on the high voltage,when the induction of over-voltage more than the collector line lightning level,will lead to tripping the line,and in severe cases,will even burn the line.
3,the degree of corrosion of grounding materials.Corrosion of grounding materials will directly lead to an increase in contact resistance,equipotential connection failure,grounding material impact change rate of change,conductivity and conductivity reduction and other issues.In the wind power operation,should regularly check the connection of the grounding point,regular rust and appropriate anti-corrosion rust treatment.
IV.The implementation of the project
1,construction preparation
Before construction,the wind farm site survey to determine the location and number of flexible grounding electrode pouring.Prepare the required materials.Organise the construction team and carry out safety technology briefing.
2,Burying of flexible grounding electrode
According to the design scheme,digging and laying flexible grounding electrode burying pit in the selected location.After the completion of construction,the flexible grounding electrode resistance test to ensure that the grounding resistance meets the requirements.
V.Acceptance of the project and evaluation of the effect
After the completion of the project,strict acceptance.Test the grounding resistance,lightning protection grounding network resistance to ensure that all indicators are in line with the design requirements.At the same time,lightning monitoring of the wind farm to assess the effect of lightning protection and grounding works.
After a period of operation monitoring,the wind farm integrated circuit grounding resistance lightning protection grounding project has achieved significant results.Under the lightning weather,the wind farm equipment operated stably and there was no failure or damage caused by lightning.The project provides a strong guarantee for the safety of lightning protection of the wind farm,and also provides a useful reference for similar projects.At the same time,the project won the third prize of Huadian Group's 2021 Innovation and Efficiency QC Excellent Achievement,and the owner unit took the lead and initiative to promote and evaluate the award within its group.
To get more information about lightning protection project,welcome to call the consultation hotline!
Recommended lightning protection products:
Flexible Grounding Electrode:excellent resistance effect+anti-corrosion environmental protection and safety+applicable to a variety of terrain
