一种风电并网系统线路的保护方法及系统
By collecting electrical quantity data of the wind power grid-connected system, calculating the interactive power inside and outside the wind farm, and constructing protection criteria, the problem of decreased line protection performance of the wind power grid-connected system was solved, and higher sensitivity and resistance to transition resistance were achieved.
CN115632382BActive Publication Date: 2026-07-17YILI RIVER POWER SUPPLY CO LTD +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- YILI RIVER POWER SUPPLY CO LTD
- Filing Date
- 2022-10-31
- Publication Date
- 2026-07-17
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Figure CN115632382B_ABST
Abstract
本发明属于继电保护技术领域，尤其涉及一种风电并网系统线路的保护方法及系统。采集风场中各风机、交流线路M端、交流线路N端的电气量数据；基于所采集电气量数据计算得到M端功率计算值、N端计算功率值和风场机间交互功率值；基于所述M端功率计算值、N端计算功率值、风场机间交互功率值和采集的M端、N端功率数据计算得到风电并网系统线路保护动作判据；当所述保护动作判据判断发生的是区内故障时，保护动作；当所述判据判断发生的是区外故障时，保护不动作。本发明解决风电并网系统线路故障特性迥异影响交流线路线保护可靠性的难题。
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