一种应用于陆上风力发电机组电气和控制系统接地的装置

By adopting a dual-grounding system architecture and anti-interference protection devices, the stability and anti-interference problems of the grounding system of onshore wind turbine generators are solved, ensuring the stable operation of the electrical control system and the protection of precision components, and achieving grounding optimization with low impedance, low inductance, and anti-interference.

CN121111634BActive Publication Date: 2026-07-17华能吐鲁番风力发电有限公司 +1
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Patent Information

Application Number
CN202511541752.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-10-27
Publication Date
2026-07-17
Estimated Expiration
2045-10-27

AI Technical Summary

Technical Problem

The existing grounding system of onshore wind turbine generators is prone to damage to precision electronic components due to lightning strikes or faults. The grounding path is easily interrupted, the anti-interference ability is poor, and it is susceptible to wind and sand, which affects the stability of the unit's operation.

Method used

The system adopts a dual grounding system architecture, with the tower base insulation system and the electrical control insulation system separated. The lightning current of the tower and the nacelle shell and the current of the electrical control cabinet are conducted through independent grounding paths. Anti-miscellaneous protection devices and constant force clamping devices are used to ensure stable contact between the brush and the metal conductive ring. The damping rod provides buffering, and multiple redundant designs ensure the stability and independence of the grounding path.

Benefits of technology

It effectively protects precision electronic components, prevents interference from lightning current and fault current, ensures stable operation of the electrical control system, prevents poor contact and impurity intrusion, and improves the anti-interference capability and reliability of the grounding system.

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Abstract

本发明涉及风机避雷接地技术领域，具体是涉及一种应用于陆上风力发电机组电气和控制系统接地的装置。包括塔基绝缘系统和电控绝缘系统，塔基绝缘系统含塔接地线、舱体接地线、第一接地基体及第一连通组件，塔接地线连塔筒，舱体接地线连舱体外壳，二者通过第一连通组件连通并接第一接地基体，用于传导防雷电流与结构静电；电控绝缘系统含第二接地基体、第二连通组件、防杂防护装置、电控接地线及电控柜内接地母排，接地母排连第二连通组件并导入第二接地基体，为精密元件接地并防强电干扰。装置可阻断雷电流、故障大电流向电控系统传导，保护精密元件，在机舱偏航时保障接地线路稳定连通，对第二连通组件进行防砂保护。
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Citation Information

Patent Citations

  • Contactor, wind turbine and contactor control method

    CN109473842A

  • Device applied to grounding of electrical and control system of wind generating set

    CN208858501U

  • Flow guide cover for wind generating set and wind power generation device

    CN216642337U